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unable to provision a node capi-kubeadm-control-plane-controller #2613

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Xenwar opened this issue Mar 10, 2020 · 6 comments · Fixed by #2616
Closed

unable to provision a node capi-kubeadm-control-plane-controller #2613

Xenwar opened this issue Mar 10, 2020 · 6 comments · Fixed by #2616
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@ncdc
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area/control-plane Issues or PRs related to control-plane lifecycle management kind/bug Categorizes issue or PR as related to a bug. lifecycle/active Indicates that an issue or PR is actively being worked on by a contributor.

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@Xenwar
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Xenwar commented Mar 10, 2020 •
edited
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What steps did you take and what happened:
Deploy a control plane node

What did you expect to happen:
A control plane node be deployed successfully.

Anything else you would like to add:
[Edit]
Only the following issue is to be fixed.

Provisioning fails due to runtime error: invalid memory address or nil pointer dereference

Environment:

  • Cluster-api version: v1alpha3

/kind bug
@k8s-ci-robot k8s-ci-robot added the kind/bug Categorizes issue or PR as related to a bug. label Mar 10, 2020
@Xenwar
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Xenwar commented Mar 10, 2020 

 kubectl logs -n capi-webhook-system capi-kubeadm-control-plane-controller-manager-777fc96489-gqknw -c manager 


airshipci@airship-ci-ubuntu-metal3-img-e47ccd5d3e:~/metal3-dev-env$  kubectl logs -n capi-webhook-system capi-kubeadm-control-plane-controller-manager-777fc96489-gqknw -c manager 
I0310 08:43:47.443444       1 listener.go:40] controller-runtime/metrics "msg"="metrics server is starting to listen"  "addr"="127.0.0.1:8080"
I0310 08:43:47.444068       1 webhook.go:102] controller-runtime/builder "msg"="Registering a mutating webhook"  "GVK"={"Group":"controlplane.cluster.x-k8s.io","Version":"v1alpha3","Kind":"KubeadmControlPlane"} "path"="/mutate-controlplane-cluster-x-k8s-io-v1alpha3-kubeadmcontrolplane"
I0310 08:43:47.444109       1 server.go:115] controller-runtime/webhook "msg"="registering webhook"  "path"="/mutate-controlplane-cluster-x-k8s-io-v1alpha3-kubeadmcontrolplane"
I0310 08:43:47.444304       1 webhook.go:123] controller-runtime/builder "msg"="Registering a validating webhook"  "GVK"={"Group":"controlplane.cluster.x-k8s.io","Version":"v1alpha3","Kind":"KubeadmControlPlane"} "path"="/validate-controlplane-cluster-x-k8s-io-v1alpha3-kubeadmcontrolplane"
I0310 08:43:47.444600       1 server.go:115] controller-runtime/webhook "msg"="registering webhook"  "path"="/validate-controlplane-cluster-x-k8s-io-v1alpha3-kubeadmcontrolplane"
I0310 08:43:47.444692       1 main.go:119] setup "msg"="starting manager"  
I0310 08:43:47.446148       1 server.go:135] controller-runtime/webhook/webhooks "msg"="starting webhook server"  
I0310 08:43:47.447421       1 certwatcher.go:127] controller-runtime/certwatcher "msg"="Updated current TLS certificate"  
I0310 08:43:47.448196       1 server.go:176] controller-runtime/webhook "msg"="serving webhook server"  "host"="" "port"=9443
I0310 08:43:47.449035       1 internal.go:356] controller-runtime/manager "msg"="starting metrics server"  "path"="/metrics"
I0310 08:43:47.449466       1 certwatcher.go:83] controller-runtime/certwatcher "msg"="Starting certificate watcher"  
2020-03-10 09:04:19.668437 I | http: panic serving 192.168.111.44:51542: runtime error: invalid memory address or nil pointer dereference
goroutine 194 [running]:
net/http.(*conn).serve.func1(0xc00052a000)
	/usr/local/go/src/net/http/server.go:1767 +0x139
panic(0x167cac0, 0x26bae00)
	/usr/local/go/src/runtime/panic.go:679 +0x1b2
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).validateEtcd(0xc000234000, 0xc000234280, 0x0, 0x0, 0x8)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:233 +0x3e
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).ValidateUpdate(0xc000234000, 0x1aa1880, 0xc000234280, 0x1000, 0x0)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:88 +0x2cf
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*validatingHandler).Handle(0xc0002d83c0, 0x1ad0180, 0xc000417c40, 0xc00052e480, 0x24, 0xc0004b5760, 0x1d, 0xc0003cb090, 0x8, 0xc0004b5780, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/validator.go:87 +0x71d
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).Handle(0xc0003bdbf0, 0x1ad0180, 0xc000417c40, 0xc00052e480, 0x24, 0xc0004b5760, 0x1d, 0xc0003cb090, 0x8, 0xc0004b5780, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/webhook.go:135 +0xa7
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).ServeHTTP(0xc0003bdbf0, 0x1acb2c0, 0xc0001ca460, 0xc0001eb100)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/http.go:87 +0xada
sigs.k8s.io/controller-runtime/pkg/webhook.instrumentedHook.func1(0x1acb2c0, 0xc0001ca460, 0xc0001eb100)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/server.go:123 +0xfc
net/http.HandlerFunc.ServeHTTP(0xc0003bdcb0, 0x1acb2c0, 0xc0001ca460, 0xc0001eb100)
	/usr/local/go/src/net/http/server.go:2007 +0x44
net/http.(*ServeMux).ServeHTTP(0xc000087cc0, 0x1acb2c0, 0xc0001ca460, 0xc0001eb100)
	/usr/local/go/src/net/http/server.go:2387 +0x1bd
net/http.serverHandler.ServeHTTP(0xc0001a81c0, 0x1acb2c0, 0xc0001ca460, 0xc0001eb100)
	/usr/local/go/src/net/http/server.go:2802 +0xa4
net/http.(*conn).serve(0xc00052a000, 0x1ad0180, 0xc00021e000)
	/usr/local/go/src/net/http/server.go:1890 +0x875
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:2928 +0x384
2020-03-10 09:04:19.688276 I | http: panic serving 192.168.123.45:46360: runtime error: invalid memory address or nil pointer dereference
goroutine 192 [running]:
net/http.(*conn).serve.func1(0xc00011f0e0)
	/usr/local/go/src/net/http/server.go:1767 +0x139
panic(0x167cac0, 0x26bae00)
	/usr/local/go/src/runtime/panic.go:679 +0x1b2
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).validateEtcd(0xc0000c4c80, 0xc0000c5b80, 0x0, 0x0, 0x8)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:233 +0x3e
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).ValidateUpdate(0xc0000c4c80, 0x1aa1880, 0xc0000c5b80, 0x1000, 0x0)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:88 +0x2cf
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*validatingHandler).Handle(0xc0002d83c0, 0x1ad0180, 0xc0004163c0, 0xc0000a80c0, 0x24, 0xc0004144e0, 0x1d, 0xc0000560b8, 0x8, 0xc000414580, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/validator.go:87 +0x71d
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).Handle(0xc0003bdbf0, 0x1ad0180, 0xc0004163c0, 0xc0000a80c0, 0x24, 0xc0004144e0, 0x1d, 0xc0000560b8, 0x8, 0xc000414580, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/webhook.go:135 +0xa7
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).ServeHTTP(0xc0003bdbf0, 0x1acb2c0, 0xc0001a8000, 0xc0000f0300)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/http.go:87 +0xada
sigs.k8s.io/controller-runtime/pkg/webhook.instrumentedHook.func1(0x1acb2c0, 0xc0001a8000, 0xc0000f0300)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/server.go:123 +0xfc
net/http.HandlerFunc.ServeHTTP(0xc0003bdcb0, 0x1acb2c0, 0xc0001a8000, 0xc0000f0300)
	/usr/local/go/src/net/http/server.go:2007 +0x44
net/http.(*ServeMux).ServeHTTP(0xc000087cc0, 0x1acb2c0, 0xc0001a8000, 0xc0000f0300)
	/usr/local/go/src/net/http/server.go:2387 +0x1bd
net/http.serverHandler.ServeHTTP(0xc0001a81c0, 0x1acb2c0, 0xc0001a8000, 0xc0000f0300)
	/usr/local/go/src/net/http/server.go:2802 +0xa4
net/http.(*conn).serve(0xc00011f0e0, 0x1ad0180, 0xc000417dc0)
	/usr/local/go/src/net/http/server.go:1890 +0x875
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:2928 +0x384
2020-03-10 09:04:19.713387 I | http: panic serving 192.168.111.44:51616: runtime error: invalid memory address or nil pointer dereference
goroutine 210 [running]:
net/http.(*conn).serve.func1(0xc00011e1e0)
	/usr/local/go/src/net/http/server.go:1767 +0x139
panic(0x167cac0, 0x26bae00)
	/usr/local/go/src/runtime/panic.go:679 +0x1b2
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).validateEtcd(0xc00011a780, 0xc00011aa00, 0x0, 0x0, 0x8)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:233 +0x3e
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).ValidateUpdate(0xc00011a780, 0x1aa1880, 0xc00011aa00, 0x1000, 0x0)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:88 +0x2cf
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*validatingHandler).Handle(0xc0002d83c0, 0x1ad0180, 0xc0004174c0, 0xc0003b8900, 0x24, 0xc0000444a0, 0x1d, 0xc000570280, 0x8, 0xc000044520, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/validator.go:87 +0x71d
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).Handle(0xc0003bdbf0, 0x1ad0180, 0xc0004174c0, 0xc0003b8900, 0x24, 0xc0000444a0, 0x1d, 0xc000570280, 0x8, 0xc000044520, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/webhook.go:135 +0xa7
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).ServeHTTP(0xc0003bdbf0, 0x1acb2c0, 0xc0001a82a0, 0xc0000f0e00)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/http.go:87 +0xada
sigs.k8s.io/controller-runtime/pkg/webhook.instrumentedHook.func1(0x1acb2c0, 0xc0001a82a0, 0xc0000f0e00)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/server.go:123 +0xfc
net/http.HandlerFunc.ServeHTTP(0xc0003bdcb0, 0x1acb2c0, 0xc0001a82a0, 0xc0000f0e00)
	/usr/local/go/src/net/http/server.go:2007 +0x44
net/http.(*ServeMux).ServeHTTP(0xc000087cc0, 0x1acb2c0, 0xc0001a82a0, 0xc0000f0e00)
	/usr/local/go/src/net/http/server.go:2387 +0x1bd
net/http.serverHandler.ServeHTTP(0xc0001a81c0, 0x1acb2c0, 0xc0001a82a0, 0xc0000f0e00)
	/usr/local/go/src/net/http/server.go:2802 +0xa4
net/http.(*conn).serve(0xc00011e1e0, 0x1ad0180, 0xc000416dc0)
	/usr/local/go/src/net/http/server.go:1890 +0x875
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:2928 +0x384
2020-03-10 09:04:19.727960 I | http: panic serving 192.168.123.45:46364: runtime error: invalid memory address or nil pointer dereference
goroutine 199 [running]:
net/http.(*conn).serve.func1(0xc00052ac80)
	/usr/local/go/src/net/http/server.go:1767 +0x139
panic(0x167cac0, 0x26bae00)
	/usr/local/go/src/runtime/panic.go:679 +0x1b2
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).validateEtcd(0xc00011af00, 0xc00011b180, 0x0, 0x0, 0x8)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:233 +0x3e
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).ValidateUpdate(0xc00011af00, 0x1aa1880, 0xc00011b180, 0x1000, 0x0)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:88 +0x2cf
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*validatingHandler).Handle(0xc0002d83c0, 0x1ad0180, 0xc000417b80, 0xc0003b9bc0, 0x24, 0xc0004b4b20, 0x1d, 0xc0003cb240, 0x8, 0xc0004b4b40, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/validator.go:87 +0x71d
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).Handle(0xc0003bdbf0, 0x1ad0180, 0xc000417b80, 0xc0003b9bc0, 0x24, 0xc0004b4b20, 0x1d, 0xc0003cb240, 0x8, 0xc0004b4b40, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/webhook.go:135 +0xa7
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).ServeHTTP(0xc0003bdbf0, 0x1acb2c0, 0xc0001a8620, 0xc0000f1500)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/http.go:87 +0xada
sigs.k8s.io/controller-runtime/pkg/webhook.instrumentedHook.func1(0x1acb2c0, 0xc0001a8620, 0xc0000f1500)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/server.go:123 +0xfc
net/http.HandlerFunc.ServeHTTP(0xc0003bdcb0, 0x1acb2c0, 0xc0001a8620, 0xc0000f1500)
	/usr/local/go/src/net/http/server.go:2007 +0x44
net/http.(*ServeMux).ServeHTTP(0xc000087cc0, 0x1acb2c0, 0xc0001a8620, 0xc0000f1500)
	/usr/local/go/src/net/http/server.go:2387 +0x1bd
net/http.serverHandler.ServeHTTP(0xc0001a81c0, 0x1acb2c0, 0xc0001a8620, 0xc0000f1500)
	/usr/local/go/src/net/http/server.go:2802 +0xa4
net/http.(*conn).serve(0xc00052ac80, 0x1ad0180, 0xc0004176c0)
	/usr/local/go/src/net/http/server.go:1890 +0x875
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:2928 +0x384
2020-03-10 09:04:19.757767 I | http: panic serving 192.168.111.44:51620: runtime error: invalid memory address or nil pointer dereference
goroutine 211 [running]:
net/http.(*conn).serve.func1(0xc00011e8c0)
	/usr/local/go/src/net/http/server.go:1767 +0x139
panic(0x167cac0, 0x26bae00)
	/usr/local/go/src/runtime/panic.go:679 +0x1b2
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).validateEtcd(0xc000234000, 0xc000234280, 0x0, 0x0, 0x8)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:233 +0x3e
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).ValidateUpdate(0xc000234000, 0x1aa1880, 0xc000234280, 0x1000, 0x0)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:88 +0x2cf
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*validatingHandler).Handle(0xc0002d83c0, 0x1ad0180, 0xc00021e080, 0xc0003ff7a0, 0x24, 0xc000568dc0, 0x1d, 0xc000343380, 0x8, 0xc000568de0, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/validator.go:87 +0x71d
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).Handle(0xc0003bdbf0, 0x1ad0180, 0xc00021e080, 0xc0003ff7a0, 0x24, 0xc000568dc0, 0x1d, 0xc000343380, 0x8, 0xc000568de0, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/webhook.go:135 +0xa7
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).ServeHTTP(0xc0003bdbf0, 0x1acb2c0, 0xc0001ca0e0, 0xc0001ea700)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/http.go:87 +0xada
sigs.k8s.io/controller-runtime/pkg/webhook.instrumentedHook.func1(0x1acb2c0, 0xc0001ca0e0, 0xc0001ea700)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/server.go:123 +0xfc
net/http.HandlerFunc.ServeHTTP(0xc0003bdcb0, 0x1acb2c0, 0xc0001ca0e0, 0xc0001ea700)
	/usr/local/go/src/net/http/server.go:2007 +0x44
net/http.(*ServeMux).ServeHTTP(0xc000087cc0, 0x1acb2c0, 0xc0001ca0e0, 0xc0001ea700)
	/usr/local/go/src/net/http/server.go:2387 +0x1bd
net/http.serverHandler.ServeHTTP(0xc0001a81c0, 0x1acb2c0, 0xc0001ca0e0, 0xc0001ea700)
	/usr/local/go/src/net/http/server.go:2802 +0xa4
net/http.(*conn).serve(0xc00011e8c0, 0x1ad0180, 0xc000417d00)
	/usr/local/go/src/net/http/server.go:1890 +0x875
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:2928 +0x384
2020-03-10 09:04:19.771151 I | http: panic serving 192.168.123.45:46368: runtime error: invalid memory address or nil pointer dereference
goroutine 203 [running]:
net/http.(*conn).serve.func1(0xc00052b720)
	/usr/local/go/src/net/http/server.go:1767 +0x139
panic(0x167cac0, 0x26bae00)
	/usr/local/go/src/runtime/panic.go:679 +0x1b2
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).validateEtcd(0xc000234c80, 0xc000235680, 0x0, 0x0, 0x8)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:233 +0x3e
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).ValidateUpdate(0xc000234c80, 0x1aa1880, 0xc000235680, 0x1000, 0x0)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:88 +0x2cf
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*validatingHandler).Handle(0xc0002d83c0, 0x1ad0180, 0xc00021eb80, 0xc0003ffce0, 0x24, 0xc000569ac0, 0x1d, 0xc0005d6450, 0x8, 0xc000569ae0, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/validator.go:87 +0x71d
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).Handle(0xc0003bdbf0, 0x1ad0180, 0xc00021eb80, 0xc0003ffce0, 0x24, 0xc000569ac0, 0x1d, 0xc0005d6450, 0x8, 0xc000569ae0, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/webhook.go:135 +0xa7
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).ServeHTTP(0xc0003bdbf0, 0x1acb2c0, 0xc0001ca1c0, 0xc0001ead00)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/http.go:87 +0xada
sigs.k8s.io/controller-runtime/pkg/webhook.instrumentedHook.func1(0x1acb2c0, 0xc0001ca1c0, 0xc0001ead00)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/server.go:123 +0xfc
net/http.HandlerFunc.ServeHTTP(0xc0003bdcb0, 0x1acb2c0, 0xc0001ca1c0, 0xc0001ead00)
	/usr/local/go/src/net/http/server.go:2007 +0x44
net/http.(*ServeMux).ServeHTTP(0xc000087cc0, 0x1acb2c0, 0xc0001ca1c0, 0xc0001ead00)
	/usr/local/go/src/net/http/server.go:2387 +0x1bd
net/http.serverHandler.ServeHTTP(0xc0001a81c0, 0x1acb2c0, 0xc0001ca1c0, 0xc0001ead00)
	/usr/local/go/src/net/http/server.go:2802 +0xa4
net/http.(*conn).serve(0xc00052b720, 0x1ad0180, 0xc0000878c0)
	/usr/local/go/src/net/http/server.go:1890 +0x875
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:2928 +0x384
2020-03-10 09:04:19.852903 I | http: panic serving 192.168.111.44:51624: runtime error: invalid memory address or nil pointer dereference
goroutine 214 [running]:
net/http.(*conn).serve.func1(0xc00011f400)
	/usr/local/go/src/net/http/server.go:1767 +0x139
panic(0x167cac0, 0x26bae00)
	/usr/local/go/src/runtime/panic.go:679 +0x1b2
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).validateEtcd(0xc00011b900, 0xc00011bb80, 0x0, 0x0, 0x8)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:233 +0x3e
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).ValidateUpdate(0xc00011b900, 0x1aa1880, 0xc00011bb80, 0x1000, 0x0)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:88 +0x2cf
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*validatingHandler).Handle(0xc0002d83c0, 0x1ad0180, 0xc0004d0300, 0xc0004699b0, 0x24, 0xc000633740, 0x1d, 0xc00068aff0, 0x8, 0xc000633760, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/validator.go:87 +0x71d
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).Handle(0xc0003bdbf0, 0x1ad0180, 0xc0004d0300, 0xc0004699b0, 0x24, 0xc000633740, 0x1d, 0xc00068aff0, 0x8, 0xc000633760, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/webhook.go:135 +0xa7
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).ServeHTTP(0xc0003bdbf0, 0x1acb2c0, 0xc0001a88c0, 0xc00070e100)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/http.go:87 +0xada
sigs.k8s.io/controller-runtime/pkg/webhook.instrumentedHook.func1(0x1acb2c0, 0xc0001a88c0, 0xc00070e100)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/server.go:123 +0xfc
net/http.HandlerFunc.ServeHTTP(0xc0003bdcb0, 0x1acb2c0, 0xc0001a88c0, 0xc00070e100)
	/usr/local/go/src/net/http/server.go:2007 +0x44
net/http.(*ServeMux).ServeHTTP(0xc000087cc0, 0x1acb2c0, 0xc0001a88c0, 0xc00070e100)
	/usr/local/go/src/net/http/server.go:2387 +0x1bd
net/http.serverHandler.ServeHTTP(0xc0001a81c0, 0x1acb2c0, 0xc0001a88c0, 0xc00070e100)
	/usr/local/go/src/net/http/server.go:2802 +0xa4
net/http.(*conn).serve(0xc00011f400, 0x1ad0180, 0xc00021f4c0)
	/usr/local/go/src/net/http/server.go:1890 +0x875
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:2928 +0x384
2020-03-10 09:04:19.868678 I | http: panic serving 192.168.123.45:46372: runtime error: invalid memory address or nil pointer dereference
goroutine 216 [running]:
net/http.(*conn).serve.func1(0xc00052a000)
	/usr/local/go/src/net/http/server.go:1767 +0x139
panic(0x167cac0, 0x26bae00)
	/usr/local/go/src/runtime/panic.go:679 +0x1b2
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).validateEtcd(0xc0000c5b80, 0xc00011a500, 0x0, 0x0, 0x8)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:233 +0x3e
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).ValidateUpdate(0xc0000c5b80, 0x1aa1880, 0xc00011a500, 0x1000, 0x0)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:88 +0x2cf
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*validatingHandler).Handle(0xc0002d83c0, 0x1ad0180, 0xc000087380, 0xc0003b8cf0, 0x24, 0xc0004b5bc0, 0x1d, 0xc0005d7520, 0x8, 0xc0004b5be0, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/validator.go:87 +0x71d
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).Handle(0xc0003bdbf0, 0x1ad0180, 0xc000087380, 0xc0003b8cf0, 0x24, 0xc0004b5bc0, 0x1d, 0xc0005d7520, 0x8, 0xc0004b5be0, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/webhook.go:135 +0xa7
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).ServeHTTP(0xc0003bdbf0, 0x1acb2c0, 0xc0001a80e0, 0xc0001ea600)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/http.go:87 +0xada
sigs.k8s.io/controller-runtime/pkg/webhook.instrumentedHook.func1(0x1acb2c0, 0xc0001a80e0, 0xc0001ea600)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/server.go:123 +0xfc
net/http.HandlerFunc.ServeHTTP(0xc0003bdcb0, 0x1acb2c0, 0xc0001a80e0, 0xc0001ea600)
	/usr/local/go/src/net/http/server.go:2007 +0x44
net/http.(*ServeMux).ServeHTTP(0xc000087cc0, 0x1acb2c0, 0xc0001a80e0, 0xc0001ea600)
	/usr/local/go/src/net/http/server.go:2387 +0x1bd
net/http.serverHandler.ServeHTTP(0xc0001a81c0, 0x1acb2c0, 0xc0001a80e0, 0xc0001ea600)
	/usr/local/go/src/net/http/server.go:2802 +0xa4
net/http.(*conn).serve(0xc00052a000, 0x1ad0180, 0xc00021e000)
	/usr/local/go/src/net/http/server.go:1890 +0x875
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:2928 +0x384
2020-03-10 09:04:19.941887 I | http: panic serving 192.168.111.44:51630: runtime error: invalid memory address or nil pointer dereference
goroutine 219 [running]:
net/http.(*conn).serve.func1(0xc00052a8c0)
	/usr/local/go/src/net/http/server.go:1767 +0x139
panic(0x167cac0, 0x26bae00)
	/usr/local/go/src/runtime/panic.go:679 +0x1b2
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).validateEtcd(0xc00011aa00, 0xc00011ac80, 0x0, 0x0, 0x8)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:233 +0x3e
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).ValidateUpdate(0xc00011aa00, 0x1aa1880, 0xc00011ac80, 0x1000, 0x0)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:88 +0x2cf
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*validatingHandler).Handle(0xc0002d83c0, 0x1ad0180, 0xc000416dc0, 0xc0003b9f50, 0x24, 0xc0002dacc0, 0x1d, 0xc000403d38, 0x8, 0xc0002dad20, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/validator.go:87 +0x71d
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).Handle(0xc0003bdbf0, 0x1ad0180, 0xc000416dc0, 0xc0003b9f50, 0x24, 0xc0002dacc0, 0x1d, 0xc000403d38, 0x8, 0xc0002dad20, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/webhook.go:135 +0xa7
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).ServeHTTP(0xc0003bdbf0, 0x1acb2c0, 0xc0001a8460, 0xc0001ead00)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/http.go:87 +0xada
sigs.k8s.io/controller-runtime/pkg/webhook.instrumentedHook.func1(0x1acb2c0, 0xc0001a8460, 0xc0001ead00)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/server.go:123 +0xfc
net/http.HandlerFunc.ServeHTTP(0xc0003bdcb0, 0x1acb2c0, 0xc0001a8460, 0xc0001ead00)
	/usr/local/go/src/net/http/server.go:2007 +0x44
net/http.(*ServeMux).ServeHTTP(0xc000087cc0, 0x1acb2c0, 0xc0001a8460, 0xc0001ead00)
	/usr/local/go/src/net/http/server.go:2387 +0x1bd
net/http.serverHandler.ServeHTTP(0xc0001a81c0, 0x1acb2c0, 0xc0001a8460, 0xc0001ead00)
	/usr/local/go/src/net/http/server.go:2802 +0xa4
net/http.(*conn).serve(0xc00052a8c0, 0x1ad0180, 0xc000087700)
	/usr/local/go/src/net/http/server.go:1890 +0x875
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:2928 +0x384
2020-03-10 09:04:19.954456 I | http: panic serving 192.168.123.45:46378: runtime error: invalid memory address or nil pointer dereference
goroutine 222 [running]:
net/http.(*conn).serve.func1(0xc00052b360)
	/usr/local/go/src/net/http/server.go:1767 +0x139
panic(0x167cac0, 0x26bae00)
	/usr/local/go/src/runtime/panic.go:679 +0x1b2
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).validateEtcd(0xc00011b180, 0xc00011b400, 0x0, 0x0, 0x8)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:233 +0x3e
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).ValidateUpdate(0xc00011b180, 0x1aa1880, 0xc00011b400, 0x1000, 0x0)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:88 +0x2cf
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*validatingHandler).Handle(0xc0002d83c0, 0x1ad0180, 0xc0004176c0, 0xc000468000, 0x24, 0xc000414a00, 0x1d, 0xc0003cbcf0, 0x8, 0xc000414a20, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/validator.go:87 +0x71d
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).Handle(0xc0003bdbf0, 0x1ad0180, 0xc0004176c0, 0xc000468000, 0x24, 0xc000414a00, 0x1d, 0xc0003cbcf0, 0x8, 0xc000414a20, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/webhook.go:135 +0xa7
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).ServeHTTP(0xc0003bdbf0, 0x1acb2c0, 0xc0001a8700, 0xc0001eb600)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/http.go:87 +0xada
sigs.k8s.io/controller-runtime/pkg/webhook.instrumentedHook.func1(0x1acb2c0, 0xc0001a8700, 0xc0001eb600)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/server.go:123 +0xfc
net/http.HandlerFunc.ServeHTTP(0xc0003bdcb0, 0x1acb2c0, 0xc0001a8700, 0xc0001eb600)
	/usr/local/go/src/net/http/server.go:2007 +0x44
net/http.(*ServeMux).ServeHTTP(0xc000087cc0, 0x1acb2c0, 0xc0001a8700, 0xc0001eb600)
	/usr/local/go/src/net/http/server.go:2387 +0x1bd
net/http.serverHandler.ServeHTTP(0xc0001a81c0, 0x1acb2c0, 0xc0001a8700, 0xc0001eb600)
	/usr/local/go/src/net/http/server.go:2802 +0xa4
net/http.(*conn).serve(0xc00052b360, 0x1ad0180, 0xc000417080)
	/usr/local/go/src/net/http/server.go:1890 +0x875
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:2928 +0x384
2020-03-10 09:04:20.051061 I | http: panic serving 192.168.111.44:51634: runtime error: invalid memory address or nil pointer dereference
goroutine 206 [running]:
net/http.(*conn).serve.func1(0xc00011e1e0)
	/usr/local/go/src/net/http/server.go:1767 +0x139
panic(0x167cac0, 0x26bae00)
	/usr/local/go/src/runtime/panic.go:679 +0x1b2
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).validateEtcd(0xc000234280, 0xc000234500, 0x0, 0x0, 0x8)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:233 +0x3e
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).ValidateUpdate(0xc000234280, 0x1aa1880, 0xc000234500, 0x1000, 0x0)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:88 +0x2cf
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*validatingHandler).Handle(0xc0002d83c0, 0x1ad0180, 0xc0004d0600, 0xc000041a40, 0x24, 0xc000724600, 0x1d, 0xc000343770, 0x8, 0xc000724620, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/validator.go:87 +0x71d
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).Handle(0xc0003bdbf0, 0x1ad0180, 0xc0004d0600, 0xc000041a40, 0x24, 0xc000724600, 0x1d, 0xc000343770, 0x8, 0xc000724620, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/webhook.go:135 +0xa7
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).ServeHTTP(0xc0003bdbf0, 0x1acb2c0, 0xc0001ca1c0, 0xc0000f0a00)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/http.go:87 +0xada
sigs.k8s.io/controller-runtime/pkg/webhook.instrumentedHook.func1(0x1acb2c0, 0xc0001ca1c0, 0xc0000f0a00)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/server.go:123 +0xfc
net/http.HandlerFunc.ServeHTTP(0xc0003bdcb0, 0x1acb2c0, 0xc0001ca1c0, 0xc0000f0a00)
	/usr/local/go/src/net/http/server.go:2007 +0x44
net/http.(*ServeMux).ServeHTTP(0xc000087cc0, 0x1acb2c0, 0xc0001ca1c0, 0xc0000f0a00)
	/usr/local/go/src/net/http/server.go:2387 +0x1bd
net/http.serverHandler.ServeHTTP(0xc0001a81c0, 0x1acb2c0, 0xc0001ca1c0, 0xc0000f0a00)
	/usr/local/go/src/net/http/server.go:2802 +0xa4
net/http.(*conn).serve(0xc00011e1e0, 0x1ad0180, 0xc0004d0000)
	/usr/local/go/src/net/http/server.go:1890 +0x875
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:2928 +0x384
2020-03-10 09:04:20.068078 I | http: panic serving 192.168.123.45:46382: runtime error: invalid memory address or nil pointer dereference
goroutine 225 [running]:
net/http.(*conn).serve.func1(0xc00052b860)
	/usr/local/go/src/net/http/server.go:1767 +0x139
panic(0x167cac0, 0x26bae00)
	/usr/local/go/src/runtime/panic.go:679 +0x1b2
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).validateEtcd(0xc000234c80, 0xc000235680, 0x0, 0x0, 0x8)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:233 +0x3e
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).ValidateUpdate(0xc000234c80, 0x1aa1880, 0xc000235680, 0x1000, 0x0)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:88 +0x2cf
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*validatingHandler).Handle(0xc0002d83c0, 0x1ad0180, 0xc0004d07c0, 0xc000041f50, 0x24, 0xc000725240, 0x1d, 0xc000056c20, 0x8, 0xc000725260, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/validator.go:87 +0x71d
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).Handle(0xc0003bdbf0, 0x1ad0180, 0xc0004d07c0, 0xc000041f50, 0x24, 0xc000725240, 0x1d, 0xc000056c20, 0x8, 0xc000725260, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/webhook.go:135 +0xa7
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).ServeHTTP(0xc0003bdbf0, 0x1acb2c0, 0xc0001ca540, 0xc0000f0d00)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/http.go:87 +0xada
sigs.k8s.io/controller-runtime/pkg/webhook.instrumentedHook.func1(0x1acb2c0, 0xc0001ca540, 0xc0000f0d00)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/server.go:123 +0xfc
net/http.HandlerFunc.ServeHTTP(0xc0003bdcb0, 0x1acb2c0, 0xc0001ca540, 0xc0000f0d00)
	/usr/local/go/src/net/http/server.go:2007 +0x44
net/http.(*ServeMux).ServeHTTP(0xc000087cc0, 0x1acb2c0, 0xc0001ca540, 0xc0000f0d00)
	/usr/local/go/src/net/http/server.go:2387 +0x1bd
net/http.serverHandler.ServeHTTP(0xc0001a81c0, 0x1acb2c0, 0xc0001ca540, 0xc0000f0d00)
	/usr/local/go/src/net/http/server.go:2802 +0xa4
net/http.(*conn).serve(0xc00052b860, 0x1ad0180, 0xc0004178c0)
	/usr/local/go/src/net/http/server.go:1890 +0x875
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:2928 +0x384
2020-03-10 09:04:20.279564 I | http: panic serving 192.168.111.44:51642: runtime error: invalid memory address or nil pointer dereference
goroutine 227 [running]:
net/http.(*conn).serve.func1(0xc00052bd60)
	/usr/local/go/src/net/http/server.go:1767 +0x139
panic(0x167cac0, 0x26bae00)
	/usr/local/go/src/runtime/panic.go:679 +0x1b2
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).validateEtcd(0xc0000c4c80, 0xc0000c5b80, 0x0, 0x0, 0x8)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:233 +0x3e
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).ValidateUpdate(0xc0000c4c80, 0x1aa1880, 0xc0000c5b80, 0x1000, 0x0)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:88 +0x2cf
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*validatingHandler).Handle(0xc0002d83c0, 0x1ad0180, 0xc000087340, 0xc000040300, 0x24, 0xc0004144e0, 0x1d, 0xc0000560b8, 0x8, 0xc000414580, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/validator.go:87 +0x71d
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).Handle(0xc0003bdbf0, 0x1ad0180, 0xc000087340, 0xc000040300, 0x24, 0xc0004144e0, 0x1d, 0xc0000560b8, 0x8, 0xc000414580, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/webhook.go:135 +0xa7
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).ServeHTTP(0xc0003bdbf0, 0x1acb2c0, 0xc0001a8000, 0xc0001ea200)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/http.go:87 +0xada
sigs.k8s.io/controller-runtime/pkg/webhook.instrumentedHook.func1(0x1acb2c0, 0xc0001a8000, 0xc0001ea200)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/server.go:123 +0xfc
net/http.HandlerFunc.ServeHTTP(0xc0003bdcb0, 0x1acb2c0, 0xc0001a8000, 0xc0001ea200)
	/usr/local/go/src/net/http/server.go:2007 +0x44
net/http.(*ServeMux).ServeHTTP(0xc000087cc0, 0x1acb2c0, 0xc0001a8000, 0xc0001ea200)
	/usr/local/go/src/net/http/server.go:2387 +0x1bd
net/http.serverHandler.ServeHTTP(0xc0001a81c0, 0x1acb2c0, 0xc0001a8000, 0xc0001ea200)
	/usr/local/go/src/net/http/server.go:2802 +0xa4
net/http.(*conn).serve(0xc00052bd60, 0x1ad0180, 0xc0004d0980)
	/usr/local/go/src/net/http/server.go:1890 +0x875
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:2928 +0x384
2020-03-10 09:04:20.295391 I | http: panic serving 192.168.123.45:46390: runtime error: invalid memory address or nil pointer dereference
goroutine 229 [running]:
net/http.(*conn).serve.func1(0xc00052a3c0)
	/usr/local/go/src/net/http/server.go:1767 +0x139
panic(0x167cac0, 0x26bae00)
	/usr/local/go/src/runtime/panic.go:679 +0x1b2
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).validateEtcd(0xc00011a780, 0xc00011aa00, 0x0, 0x0, 0x8)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:233 +0x3e
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).ValidateUpdate(0xc00011a780, 0x1aa1880, 0xc00011aa00, 0x1000, 0x0)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:88 +0x2cf
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*validatingHandler).Handle(0xc0002d83c0, 0x1ad0180, 0xc00021e180, 0xc000041950, 0x24, 0xc000569aa0, 0x1d, 0xc0004542a0, 0x8, 0xc000569ac0, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/validator.go:87 +0x71d
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).Handle(0xc0003bdbf0, 0x1ad0180, 0xc00021e180, 0xc000041950, 0x24, 0xc000569aa0, 0x1d, 0xc0004542a0, 0x8, 0xc000569ac0, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/webhook.go:135 +0xa7
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).ServeHTTP(0xc0003bdbf0, 0x1acb2c0, 0xc0001a82a0, 0xc0001eac00)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/http.go:87 +0xada
sigs.k8s.io/controller-runtime/pkg/webhook.instrumentedHook.func1(0x1acb2c0, 0xc0001a82a0, 0xc0001eac00)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/server.go:123 +0xfc
net/http.HandlerFunc.ServeHTTP(0xc0003bdcb0, 0x1acb2c0, 0xc0001a82a0, 0xc0001eac00)
	/usr/local/go/src/net/http/server.go:2007 +0x44
net/http.(*ServeMux).ServeHTTP(0xc000087cc0, 0x1acb2c0, 0xc0001a82a0, 0xc0001eac00)
	/usr/local/go/src/net/http/server.go:2387 +0x1bd
net/http.serverHandler.ServeHTTP(0xc0001a81c0, 0x1acb2c0, 0xc0001a82a0, 0xc0001eac00)
	/usr/local/go/src/net/http/server.go:2802 +0xa4
net/http.(*conn).serve(0xc00052a3c0, 0x1ad0180, 0xc0000876c0)
	/usr/local/go/src/net/http/server.go:1890 +0x875
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:2928 +0x384
2020-03-10 09:04:20.644028 I | http: panic serving 192.168.111.44:51648: runtime error: invalid memory address or nil pointer dereference
goroutine 232 [running]:
net/http.(*conn).serve.func1(0xc00052b040)
	/usr/local/go/src/net/http/server.go:1767 +0x139
panic(0x167cac0, 0x26bae00)
	/usr/local/go/src/runtime/panic.go:679 +0x1b2
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).validateEtcd(0xc00011af00, 0xc00011b180, 0x0, 0x0, 0x8)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:233 +0x3e
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).ValidateUpdate(0xc00011af00, 0x1aa1880, 0xc00011b180, 0x1000, 0x0)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:88 +0x2cf
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*validatingHandler).Handle(0xc0002d83c0, 0x1ad0180, 0xc000416dc0, 0xc0003ff9b0, 0x24, 0xc000442aa0, 0x1d, 0xc0003cac10, 0x8, 0xc000442ac0, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/validator.go:87 +0x71d
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).Handle(0xc0003bdbf0, 0x1ad0180, 0xc000416dc0, 0xc0003ff9b0, 0x24, 0xc000442aa0, 0x1d, 0xc0003cac10, 0x8, 0xc000442ac0, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/webhook.go:135 +0xa7
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).ServeHTTP(0xc0003bdbf0, 0x1acb2c0, 0xc0001a8620, 0xc0001eb300)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/http.go:87 +0xada
sigs.k8s.io/controller-runtime/pkg/webhook.instrumentedHook.func1(0x1acb2c0, 0xc0001a8620, 0xc0001eb300)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/server.go:123 +0xfc
net/http.HandlerFunc.ServeHTTP(0xc0003bdcb0, 0x1acb2c0, 0xc0001a8620, 0xc0001eb300)
	/usr/local/go/src/net/http/server.go:2007 +0x44
net/http.(*ServeMux).ServeHTTP(0xc000087cc0, 0x1acb2c0, 0xc0001a8620, 0xc0001eb300)
	/usr/local/go/src/net/http/server.go:2387 +0x1bd
net/http.serverHandler.ServeHTTP(0xc0001a81c0, 0x1acb2c0, 0xc0001a8620, 0xc0001eb300)
	/usr/local/go/src/net/http/server.go:2802 +0xa4
net/http.(*conn).serve(0xc00052b040, 0x1ad0180, 0xc00021f0c0)
	/usr/local/go/src/net/http/server.go:1890 +0x875
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:2928 +0x384
2020-03-10 09:04:20.660140 I | http: panic serving 192.168.123.45:46396: runtime error: invalid memory address or nil pointer dereference
goroutine 235 [running]:
net/http.(*conn).serve.func1(0xc00052b5e0)
	/usr/local/go/src/net/http/server.go:1767 +0x139
panic(0x167cac0, 0x26bae00)
	/usr/local/go/src/runtime/panic.go:679 +0x1b2
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).validateEtcd(0xc000234000, 0xc000234280, 0x0, 0x0, 0x8)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:233 +0x3e
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).ValidateUpdate(0xc000234000, 0x1aa1880, 0xc000234280, 0x1000, 0x0)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:88 +0x2cf
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*validatingHandler).Handle(0xc0002d83c0, 0x1ad0180, 0xc0004d0040, 0xc000468000, 0x24, 0xc0006a80a0, 0x1d, 0xc00068a058, 0x8, 0xc0006a80c0, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/validator.go:87 +0x71d
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).Handle(0xc0003bdbf0, 0x1ad0180, 0xc0004d0040, 0xc000468000, 0x24, 0xc0006a80a0, 0x1d, 0xc00068a058, 0x8, 0xc0006a80c0, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/webhook.go:135 +0xa7
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).ServeHTTP(0xc0003bdbf0, 0x1acb2c0, 0xc0001ca0e0, 0xc00070e100)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/http.go:87 +0xada
sigs.k8s.io/controller-runtime/pkg/webhook.instrumentedHook.func1(0x1acb2c0, 0xc0001ca0e0, 0xc00070e100)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/server.go:123 +0xfc
net/http.HandlerFunc.ServeHTTP(0xc0003bdcb0, 0x1acb2c0, 0xc0001ca0e0, 0xc00070e100)
	/usr/local/go/src/net/http/server.go:2007 +0x44
net/http.(*ServeMux).ServeHTTP(0xc000087cc0, 0x1acb2c0, 0xc0001ca0e0, 0xc00070e100)
	/usr/local/go/src/net/http/server.go:2387 +0x1bd
net/http.serverHandler.ServeHTTP(0xc0001a81c0, 0x1acb2c0, 0xc0001ca0e0, 0xc00070e100)
	/usr/local/go/src/net/http/server.go:2802 +0xa4
net/http.(*conn).serve(0xc00052b5e0, 0x1ad0180, 0xc000417080)
	/usr/local/go/src/net/http/server.go:1890 +0x875
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:2928 +0x384
2020-03-10 09:04:21.338961 I | http: panic serving 192.168.111.44:51656: runtime error: invalid memory address or nil pointer dereference
goroutine 244 [running]:
net/http.(*conn).serve.func1(0xc00011ed20)
	/usr/local/go/src/net/http/server.go:1767 +0x139
panic(0x167cac0, 0x26bae00)
	/usr/local/go/src/runtime/panic.go:679 +0x1b2
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).validateEtcd(0xc000234500, 0xc000234c80, 0x0, 0x0, 0x8)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:233 +0x3e
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).ValidateUpdate(0xc000234500, 0x1aa1880, 0xc000234c80, 0x1000, 0x0)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:88 +0x2cf
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*validatingHandler).Handle(0xc0002d83c0, 0x1ad0180, 0xc0004d0240, 0xc000468510, 0x24, 0xc0006a8d00, 0x1d, 0xc00068aa98, 0x8, 0xc0006a8d20, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/validator.go:87 +0x71d
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).Handle(0xc0003bdbf0, 0x1ad0180, 0xc0004d0240, 0xc000468510, 0x24, 0xc0006a8d00, 0x1d, 0xc00068aa98, 0x8, 0xc0006a8d20, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/webhook.go:135 +0xa7
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).ServeHTTP(0xc0003bdbf0, 0x1acb2c0, 0xc0001ca1c0, 0xc00070e700)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/http.go:87 +0xada
sigs.k8s.io/controller-runtime/pkg/webhook.instrumentedHook.func1(0x1acb2c0, 0xc0001ca1c0, 0xc00070e700)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/server.go:123 +0xfc
net/http.HandlerFunc.ServeHTTP(0xc0003bdcb0, 0x1acb2c0, 0xc0001ca1c0, 0xc00070e700)
	/usr/local/go/src/net/http/server.go:2007 +0x44
net/http.(*ServeMux).ServeHTTP(0xc000087cc0, 0x1acb2c0, 0xc0001ca1c0, 0xc00070e700)
	/usr/local/go/src/net/http/server.go:2387 +0x1bd
net/http.serverHandler.ServeHTTP(0xc0001a81c0, 0x1acb2c0, 0xc0001ca1c0, 0xc00070e700)
	/usr/local/go/src/net/http/server.go:2802 +0xa4
net/http.(*conn).serve(0xc00011ed20, 0x1ad0180, 0xc000417680)
	/usr/local/go/src/net/http/server.go:1890 +0x875
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:2928 +0x384
2020-03-10 09:04:21.356339 I | http: panic serving 192.168.123.45:46404: runtime error: invalid memory address or nil pointer dereference
goroutine 246 [running]:
net/http.(*conn).serve.func1(0xc00011f040)
	/usr/local/go/src/net/http/server.go:1767 +0x139
panic(0x167cac0, 0x26bae00)
	/usr/local/go/src/runtime/panic.go:679 +0x1b2
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).validateEtcd(0xc0002b2280, 0xc0002b2500, 0x0, 0x0, 0x8)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:233 +0x3e
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).ValidateUpdate(0xc0002b2280, 0x1aa1880, 0xc0002b2500, 0x1000, 0x0)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:88 +0x2cf
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*validatingHandler).Handle(0xc0002d83c0, 0x1ad0180, 0xc0004d0840, 0xc0004696e0, 0x24, 0xc0006852a0, 0x1d, 0xc0006b89c0, 0x8, 0xc0006852c0, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/validator.go:87 +0x71d
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).Handle(0xc0003bdbf0, 0x1ad0180, 0xc0004d0840, 0xc0004696e0, 0x24, 0xc0006852a0, 0x1d, 0xc0006b89c0, 0x8, 0xc0006852c0, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/webhook.go:135 +0xa7
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).ServeHTTP(0xc0003bdbf0, 0x1acb2c0, 0xc0001ca540, 0xc00070f100)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/http.go:87 +0xada
sigs.k8s.io/controller-runtime/pkg/webhook.instrumentedHook.func1(0x1acb2c0, 0xc0001ca540, 0xc00070f100)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/server.go:123 +0xfc
net/http.HandlerFunc.ServeHTTP(0xc0003bdcb0, 0x1acb2c0, 0xc0001ca540, 0xc00070f100)
	/usr/local/go/src/net/http/server.go:2007 +0x44
net/http.(*ServeMux).ServeHTTP(0xc000087cc0, 0x1acb2c0, 0xc0001ca540, 0xc00070f100)
	/usr/local/go/src/net/http/server.go:2387 +0x1bd
net/http.serverHandler.ServeHTTP(0xc0001a81c0, 0x1acb2c0, 0xc0001ca540, 0xc00070f100)
	/usr/local/go/src/net/http/server.go:2802 +0xa4
net/http.(*conn).serve(0xc00011f040, 0x1ad0180, 0xc0004d0400)
	/usr/local/go/src/net/http/server.go:1890 +0x875
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:2928 +0x384
2020-03-10 09:04:22.691036 I | http: panic serving 192.168.111.44:51666: runtime error: invalid memory address or nil pointer dereference
goroutine 249 [running]:
net/http.(*conn).serve.func1(0xc00011e1e0)
	/usr/local/go/src/net/http/server.go:1767 +0x139
panic(0x167cac0, 0x26bae00)
	/usr/local/go/src/runtime/panic.go:679 +0x1b2
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).validateEtcd(0xc0000c4c80, 0xc0000c5b80, 0x0, 0x0, 0x8)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:233 +0x3e
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).ValidateUpdate(0xc0000c4c80, 0x1aa1880, 0xc0000c5b80, 0x1000, 0x0)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:88 +0x2cf
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*validatingHandler).Handle(0xc0002d83c0, 0x1ad0180, 0xc000087340, 0xc000040300, 0x24, 0xc0006a80c0, 0x1d, 0xc000402180, 0x8, 0xc0006a80e0, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/validator.go:87 +0x71d
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).Handle(0xc0003bdbf0, 0x1ad0180, 0xc000087340, 0xc000040300, 0x24, 0xc0006a80c0, 0x1d, 0xc000402180, 0x8, 0xc0006a80e0, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/webhook.go:135 +0xa7
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).ServeHTTP(0xc0003bdbf0, 0x1acb2c0, 0xc0001a8000, 0xc0001ea000)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/http.go:87 +0xada
sigs.k8s.io/controller-runtime/pkg/webhook.instrumentedHook.func1(0x1acb2c0, 0xc0001a8000, 0xc0001ea000)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/server.go:123 +0xfc
net/http.HandlerFunc.ServeHTTP(0xc0003bdcb0, 0x1acb2c0, 0xc0001a8000, 0xc0001ea000)
	/usr/local/go/src/net/http/server.go:2007 +0x44
net/http.(*ServeMux).ServeHTTP(0xc000087cc0, 0x1acb2c0, 0xc0001a8000, 0xc0001ea000)
	/usr/local/go/src/net/http/server.go:2387 +0x1bd
net/http.serverHandler.ServeHTTP(0xc0001a81c0, 0x1acb2c0, 0xc0001a8000, 0xc0001ea000)
	/usr/local/go/src/net/http/server.go:2802 +0xa4
net/http.(*conn).serve(0xc00011e1e0, 0x1ad0180, 0xc00021e080)
	/usr/local/go/src/net/http/server.go:1890 +0x875
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:2928 +0x384
2020-03-10 09:04:22.710974 I | http: panic serving 192.168.123.45:46414: runtime error: invalid memory address or nil pointer dereference
goroutine 239 [running]:
net/http.(*conn).serve.func1(0xc00052a320)
	/usr/local/go/src/net/http/server.go:1767 +0x139
panic(0x167cac0, 0x26bae00)
	/usr/local/go/src/runtime/panic.go:679 +0x1b2
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).validateEtcd(0xc0002b2a00, 0xc0002b2f00, 0x0, 0x0, 0x8)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:233 +0x3e
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).ValidateUpdate(0xc0002b2a00, 0x1aa1880, 0xc0002b2f00, 0x1000, 0x0)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:88 +0x2cf
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*validatingHandler).Handle(0xc0002d83c0, 0x1ad0180, 0xc0000877c0, 0xc000040cc0, 0x24, 0xc0006a8d00, 0x1d, 0xc000402f20, 0x8, 0xc0006a8d20, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/validator.go:87 +0x71d
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).Handle(0xc0003bdbf0, 0x1ad0180, 0xc0000877c0, 0xc000040cc0, 0x24, 0xc0006a8d00, 0x1d, 0xc000402f20, 0x8, 0xc0006a8d20, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/webhook.go:135 +0xa7
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).ServeHTTP(0xc0003bdbf0, 0x1acb2c0, 0xc0001a80e0, 0xc0001ea400)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/http.go:87 +0xada
sigs.k8s.io/controller-runtime/pkg/webhook.instrumentedHook.func1(0x1acb2c0, 0xc0001a80e0, 0xc0001ea400)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/server.go:123 +0xfc
net/http.HandlerFunc.ServeHTTP(0xc0003bdcb0, 0x1acb2c0, 0xc0001a80e0, 0xc0001ea400)
	/usr/local/go/src/net/http/server.go:2007 +0x44
net/http.(*ServeMux).ServeHTTP(0xc000087cc0, 0x1acb2c0, 0xc0001a80e0, 0xc0001ea400)
	/usr/local/go/src/net/http/server.go:2387 +0x1bd
net/http.serverHandler.ServeHTTP(0xc0001a81c0, 0x1acb2c0, 0xc0001a80e0, 0xc0001ea400)
	/usr/local/go/src/net/http/server.go:2802 +0xa4
net/http.(*conn).serve(0xc00052a320, 0x1ad0180, 0xc00021f640)
	/usr/local/go/src/net/http/server.go:1890 +0x875
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:2928 +0x384
2020-03-10 09:04:25.317862 I | http: panic serving 192.168.111.44:51694: runtime error: invalid memory address or nil pointer dereference
goroutine 257 [running]:
net/http.(*conn).serve.func1(0xc00052a640)
	/usr/local/go/src/net/http/server.go:1767 +0x139
panic(0x167cac0, 0x26bae00)
	/usr/local/go/src/runtime/panic.go:679 +0x1b2
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).validateEtcd(0xc000234c80, 0xc000235680, 0x0, 0x0, 0x8)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:233 +0x3e
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).ValidateUpdate(0xc000234c80, 0x1aa1880, 0xc000235680, 0x1000, 0x0)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:88 +0x2cf
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*validatingHandler).Handle(0xc0002d83c0, 0x1ad0180, 0xc0004d0740, 0xc000469440, 0x24, 0xc0005688e0, 0x1d, 0xc000342f00, 0x8, 0xc000568900, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/validator.go:87 +0x71d
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).Handle(0xc0003bdbf0, 0x1ad0180, 0xc0004d0740, 0xc000469440, 0x24, 0xc0005688e0, 0x1d, 0xc000342f00, 0x8, 0xc000568900, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/webhook.go:135 +0xa7
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).ServeHTTP(0xc0003bdbf0, 0x1acb2c0, 0xc0001ca620, 0xc00070fc00)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/http.go:87 +0xada
sigs.k8s.io/controller-runtime/pkg/webhook.instrumentedHook.func1(0x1acb2c0, 0xc0001ca620, 0xc00070fc00)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/server.go:123 +0xfc
net/http.HandlerFunc.ServeHTTP(0xc0003bdcb0, 0x1acb2c0, 0xc0001ca620, 0xc00070fc00)
	/usr/local/go/src/net/http/server.go:2007 +0x44
net/http.(*ServeMux).ServeHTTP(0xc000087cc0, 0x1acb2c0, 0xc0001ca620, 0xc00070fc00)
	/usr/local/go/src/net/http/server.go:2387 +0x1bd
net/http.serverHandler.ServeHTTP(0xc0001a81c0, 0x1acb2c0, 0xc0001ca620, 0xc00070fc00)
	/usr/local/go/src/net/http/server.go:2802 +0xa4
net/http.(*conn).serve(0xc00052a640, 0x1ad0180, 0xc0004d0280)
	/usr/local/go/src/net/http/server.go:1890 +0x875
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:2928 +0x384
2020-03-10 09:04:25.336976 I | http: panic serving 192.168.123.45:46442: runtime error: invalid memory address or nil pointer dereference
goroutine 252 [running]:
net/http.(*conn).serve.func1(0xc00011f0e0)
	/usr/local/go/src/net/http/server.go:1767 +0x139
panic(0x167cac0, 0x26bae00)
	/usr/local/go/src/runtime/panic.go:679 +0x1b2
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).validateEtcd(0xc0002b3400, 0xc00011a500, 0x0, 0x0, 0x8)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:233 +0x3e
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).ValidateUpdate(0xc0002b3400, 0x1aa1880, 0xc00011a500, 0x1000, 0x0)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:88 +0x2cf
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*validatingHandler).Handle(0xc0002d83c0, 0x1ad0180, 0xc0004171c0, 0xc000041e60, 0x24, 0xc000684100, 0x1d, 0xc0006b9758, 0x8, 0xc000684120, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/validator.go:87 +0x71d
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).Handle(0xc0003bdbf0, 0x1ad0180, 0xc0004171c0, 0xc000041e60, 0x24, 0xc000684100, 0x1d, 0xc0006b9758, 0x8, 0xc000684120, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/webhook.go:135 +0xa7
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).ServeHTTP(0xc0003bdbf0, 0x1acb2c0, 0xc0001a8460, 0xc0001eae00)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/http.go:87 +0xada
sigs.k8s.io/controller-runtime/pkg/webhook.instrumentedHook.func1(0x1acb2c0, 0xc0001a8460, 0xc0001eae00)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/server.go:123 +0xfc
net/http.HandlerFunc.ServeHTTP(0xc0003bdcb0, 0x1acb2c0, 0xc0001a8460, 0xc0001eae00)
	/usr/local/go/src/net/http/server.go:2007 +0x44
net/http.(*ServeMux).ServeHTTP(0xc000087cc0, 0x1acb2c0, 0xc0001a8460, 0xc0001eae00)
	/usr/local/go/src/net/http/server.go:2387 +0x1bd
net/http.serverHandler.ServeHTTP(0xc0001a81c0, 0x1acb2c0, 0xc0001a8460, 0xc0001eae00)
	/usr/local/go/src/net/http/server.go:2802 +0xa4
net/http.(*conn).serve(0xc00011f0e0, 0x1ad0180, 0xc000087d80)
	/usr/local/go/src/net/http/server.go:1890 +0x875
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:2928 +0x384
2020-03-10 09:04:30.482597 I | http: panic serving 192.168.111.44:51738: runtime error: invalid memory address or nil pointer dereference
goroutine 260 [running]:
net/http.(*conn).serve.func1(0xc00052b2c0)
	/usr/local/go/src/net/http/server.go:1767 +0x139
panic(0x167cac0, 0x26bae00)
	/usr/local/go/src/runtime/panic.go:679 +0x1b2
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).validateEtcd(0xc00011a780, 0xc00011aa00, 0x0, 0x0, 0x8)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:233 +0x3e
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).ValidateUpdate(0xc00011a780, 0x1aa1880, 0xc00011aa00, 0x1000, 0x0)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:88 +0x2cf
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*validatingHandler).Handle(0xc0002d83c0, 0x1ad0180, 0xc000417480, 0xc0003b83c0, 0x24, 0xc000684d40, 0x1d, 0xc0006ee180, 0x8, 0xc000684d60, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/validator.go:87 +0x71d
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).Handle(0xc0003bdbf0, 0x1ad0180, 0xc000417480, 0xc0003b83c0, 0x24, 0xc000684d40, 0x1d, 0xc0006ee180, 0x8, 0xc000684d60, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/webhook.go:135 +0xa7
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).ServeHTTP(0xc0003bdbf0, 0x1acb2c0, 0xc0001a8620, 0xc0001eb100)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/http.go:87 +0xada
sigs.k8s.io/controller-runtime/pkg/webhook.instrumentedHook.func1(0x1acb2c0, 0xc0001a8620, 0xc0001eb100)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/server.go:123 +0xfc
net/http.HandlerFunc.ServeHTTP(0xc0003bdcb0, 0x1acb2c0, 0xc0001a8620, 0xc0001eb100)
	/usr/local/go/src/net/http/server.go:2007 +0x44
net/http.(*ServeMux).ServeHTTP(0xc000087cc0, 0x1acb2c0, 0xc0001a8620, 0xc0001eb100)
	/usr/local/go/src/net/http/server.go:2387 +0x1bd
net/http.serverHandler.ServeHTTP(0xc0001a81c0, 0x1acb2c0, 0xc0001a8620, 0xc0001eb100)
	/usr/local/go/src/net/http/server.go:2802 +0xa4
net/http.(*conn).serve(0xc00052b2c0, 0x1ad0180, 0xc0004d0a40)
	/usr/local/go/src/net/http/server.go:1890 +0x875
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:2928 +0x384
2020-03-10 09:04:30.517789 I | http: panic serving 192.168.123.45:46486: runtime error: invalid memory address or nil pointer dereference
goroutine 262 [running]:
net/http.(*conn).serve.func1(0xc00052b540)
	/usr/local/go/src/net/http/server.go:1767 +0x139
panic(0x167cac0, 0x26bae00)
	/usr/local/go/src/runtime/panic.go:679 +0x1b2
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).validateEtcd(0xc0002b2500, 0xc0002b2a00, 0x0, 0x0, 0x8)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:233 +0x3e
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).ValidateUpdate(0xc0002b2500, 0x1aa1880, 0xc0002b2a00, 0x1000, 0x0)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:88 +0x2cf
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*validatingHandler).Handle(0xc0002d83c0, 0x1ad0180, 0xc000417240, 0xc0004681e0, 0x24, 0xc0006a9260, 0x1d, 0xc0006911a0, 0x8, 0xc0006a9280, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/validator.go:87 +0x71d
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).Handle(0xc0003bdbf0, 0x1ad0180, 0xc000417240, 0xc0004681e0, 0x24, 0xc0006a9260, 0x1d, 0xc0006911a0, 0x8, 0xc0006a9280, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/webhook.go:135 +0xa7
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).ServeHTTP(0xc0003bdbf0, 0x1acb2c0, 0xc0001a80e0, 0xc0000f1100)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/http.go:87 +0xada
sigs.k8s.io/controller-runtime/pkg/webhook.instrumentedHook.func1(0x1acb2c0, 0xc0001a80e0, 0xc0000f1100)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/server.go:123 +0xfc
net/http.HandlerFunc.ServeHTTP(0xc0003bdcb0, 0x1acb2c0, 0xc0001a80e0, 0xc0000f1100)
	/usr/local/go/src/net/http/server.go:2007 +0x44
net/http.(*ServeMux).ServeHTTP(0xc000087cc0, 0x1acb2c0, 0xc0001a80e0, 0xc0000f1100)
	/usr/local/go/src/net/http/server.go:2387 +0x1bd
net/http.serverHandler.ServeHTTP(0xc0001a81c0, 0x1acb2c0, 0xc0001a80e0, 0xc0000f1100)
	/usr/local/go/src/net/http/server.go:2802 +0xa4
net/http.(*conn).serve(0xc00052b540, 0x1ad0180, 0xc000416380)
	/usr/local/go/src/net/http/server.go:1890 +0x875
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:2928 +0x384
2020-03-10 09:04:40.791917 I | http: panic serving 192.168.111.44:51828: runtime error: invalid memory address or nil pointer dereference
goroutine 265 [running]:
net/http.(*conn).serve.func1(0xc00011ef00)
	/usr/local/go/src/net/http/server.go:1767 +0x139
panic(0x167cac0, 0x26bae00)
	/usr/local/go/src/runtime/panic.go:679 +0x1b2
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).validateEtcd(0xc0002b3180, 0xc0002b3400, 0x0, 0x0, 0x8)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:233 +0x3e
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).ValidateUpdate(0xc0002b3180, 0x1aa1880, 0xc0002b3400, 0x1000, 0x0)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:88 +0x2cf
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*validatingHandler).Handle(0xc0002d83c0, 0x1ad0180, 0xc0004179c0, 0xc000469380, 0x24, 0xc000568b40, 0x1d, 0xc000343528, 0x8, 0xc000568b60, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/validator.go:87 +0x71d
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).Handle(0xc0003bdbf0, 0x1ad0180, 0xc0004179c0, 0xc000469380, 0x24, 0xc000568b40, 0x1d, 0xc000343528, 0x8, 0xc000568b60, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/webhook.go:135 +0xa7
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).ServeHTTP(0xc0003bdbf0, 0x1acb2c0, 0xc0001a8460, 0xc0000f1800)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/http.go:87 +0xada
sigs.k8s.io/controller-runtime/pkg/webhook.instrumentedHook.func1(0x1acb2c0, 0xc0001a8460, 0xc0000f1800)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/server.go:123 +0xfc
net/http.HandlerFunc.ServeHTTP(0xc0003bdcb0, 0x1acb2c0, 0xc0001a8460, 0xc0000f1800)
	/usr/local/go/src/net/http/server.go:2007 +0x44
net/http.(*ServeMux).ServeHTTP(0xc000087cc0, 0x1acb2c0, 0xc0001a8460, 0xc0000f1800)
	/usr/local/go/src/net/http/server.go:2387 +0x1bd
net/http.serverHandler.ServeHTTP(0xc0001a81c0, 0x1acb2c0, 0xc0001a8460, 0xc0000f1800)
	/usr/local/go/src/net/http/server.go:2802 +0xa4
net/http.(*conn).serve(0xc00011ef00, 0x1ad0180, 0xc000417480)
	/usr/local/go/src/net/http/server.go:1890 +0x875
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:2928 +0x384
2020-03-10 09:04:40.808635 I | http: panic serving 192.168.123.45:46576: runtime error: invalid memory address or nil pointer dereference
goroutine 256 [running]:
net/http.(*conn).serve.func1(0xc00052a000)
	/usr/local/go/src/net/http/server.go:1767 +0x139
panic(0x167cac0, 0x26bae00)
	/usr/local/go/src/runtime/panic.go:679 +0x1b2
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).validateEtcd(0xc0000c5b80, 0xc00011a500, 0x0, 0x0, 0x8)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:233 +0x3e
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).ValidateUpdate(0xc0000c5b80, 0x1aa1880, 0xc00011a500, 0x1000, 0x0)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:88 +0x2cf
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*validatingHandler).Handle(0xc0002d83c0, 0x1ad0180, 0xc000417f80, 0xc000040c90, 0x24, 0xc000045040, 0x1d, 0xc000571830, 0x8, 0xc0000450c0, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/validator.go:87 +0x71d
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).Handle(0xc0003bdbf0, 0x1ad0180, 0xc000417f80, 0xc000040c90, 0x24, 0xc000045040, 0x1d, 0xc000571830, 0x8, 0xc0000450c0, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/webhook.go:135 +0xa7
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).ServeHTTP(0xc0003bdbf0, 0x1acb2c0, 0xc0001a8700, 0xc0000f1f00)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/http.go:87 +0xada
sigs.k8s.io/controller-runtime/pkg/webhook.instrumentedHook.func1(0x1acb2c0, 0xc0001a8700, 0xc0000f1f00)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/server.go:123 +0xfc
net/http.HandlerFunc.ServeHTTP(0xc0003bdcb0, 0x1acb2c0, 0xc0001a8700, 0xc0000f1f00)
	/usr/local/go/src/net/http/server.go:2007 +0x44
net/http.(*ServeMux).ServeHTTP(0xc000087cc0, 0x1acb2c0, 0xc0001a8700, 0xc0000f1f00)
	/usr/local/go/src/net/http/server.go:2387 +0x1bd
net/http.serverHandler.ServeHTTP(0xc0001a81c0, 0x1acb2c0, 0xc0001a8700, 0xc0000f1f00)
	/usr/local/go/src/net/http/server.go:2802 +0xa4
net/http.(*conn).serve(0xc00052a000, 0x1ad0180, 0xc000417b40)
	/usr/local/go/src/net/http/server.go:1890 +0x875
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:2928 +0x384
2020-03-10 09:05:01.328183 I | http: panic serving 192.168.111.44:51996: runtime error: invalid memory address or nil pointer dereference
goroutine 273 [running]:
net/http.(*conn).serve.func1(0xc00052a140)
	/usr/local/go/src/net/http/server.go:1767 +0x139
panic(0x167cac0, 0x26bae00)
	/usr/local/go/src/runtime/panic.go:679 +0x1b2
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).validateEtcd(0xc000234280, 0xc000234500, 0x0, 0x0, 0x8)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:233 +0x3e
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).ValidateUpdate(0xc000234280, 0x1aa1880, 0xc000234500, 0x1000, 0x0)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:88 +0x2cf
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*validatingHandler).Handle(0xc0002d83c0, 0x1ad0180, 0xc00021f680, 0xc0003b8d50, 0x24, 0xc00066de60, 0x1d, 0xc0006ef678, 0x8, 0xc00066de80, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/validator.go:87 +0x71d
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).Handle(0xc0003bdbf0, 0x1ad0180, 0xc00021f680, 0xc0003b8d50, 0x24, 0xc00066de60, 0x1d, 0xc0006ef678, 0x8, 0xc00066de80, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/webhook.go:135 +0xa7
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).ServeHTTP(0xc0003bdbf0, 0x1acb2c0, 0xc0001ca1c0, 0xc0005ee400)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/http.go:87 +0xada
sigs.k8s.io/controller-runtime/pkg/webhook.instrumentedHook.func1(0x1acb2c0, 0xc0001ca1c0, 0xc0005ee400)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/server.go:123 +0xfc
net/http.HandlerFunc.ServeHTTP(0xc0003bdcb0, 0x1acb2c0, 0xc0001ca1c0, 0xc0005ee400)
	/usr/local/go/src/net/http/server.go:2007 +0x44
net/http.(*ServeMux).ServeHTTP(0xc000087cc0, 0x1acb2c0, 0xc0001ca1c0, 0xc0005ee400)
	/usr/local/go/src/net/http/server.go:2387 +0x1bd
net/http.serverHandler.ServeHTTP(0xc0001a81c0, 0x1acb2c0, 0xc0001ca1c0, 0xc0005ee400)
	/usr/local/go/src/net/http/server.go:2802 +0xa4
net/http.(*conn).serve(0xc00052a140, 0x1ad0180, 0xc00021e000)
	/usr/local/go/src/net/http/server.go:1890 +0x875
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:2928 +0x384
2020-03-10 09:05:01.344180 I | http: panic serving 192.168.123.45:46744: runtime error: invalid memory address or nil pointer dereference
goroutine 270 [running]:
net/http.(*conn).serve.func1(0xc00011f900)
	/usr/local/go/src/net/http/server.go:1767 +0x139
panic(0x167cac0, 0x26bae00)
	/usr/local/go/src/runtime/panic.go:679 +0x1b2
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).validateEtcd(0xc00011aa00, 0xc00011ac80, 0x0, 0x0, 0x8)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:233 +0x3e
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).ValidateUpdate(0xc00011aa00, 0x1aa1880, 0xc00011ac80, 0x1000, 0x0)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:88 +0x2cf
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*validatingHandler).Handle(0xc0002d83c0, 0x1ad0180, 0xc0006880c0, 0xc000041e30, 0x24, 0xc000678e60, 0x1d, 0xc0003cbc50, 0x8, 0xc000678e80, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/validator.go:87 +0x71d
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).Handle(0xc0003bdbf0, 0x1ad0180, 0xc0006880c0, 0xc000041e30, 0x24, 0xc000678e60, 0x1d, 0xc0003cbc50, 0x8, 0xc000678e80, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/webhook.go:135 +0xa7
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).ServeHTTP(0xc0003bdbf0, 0x1acb2c0, 0xc0001a88c0, 0xc00070ec00)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/http.go:87 +0xada
sigs.k8s.io/controller-runtime/pkg/webhook.instrumentedHook.func1(0x1acb2c0, 0xc0001a88c0, 0xc00070ec00)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/server.go:123 +0xfc
net/http.HandlerFunc.ServeHTTP(0xc0003bdcb0, 0x1acb2c0, 0xc0001a88c0, 0xc00070ec00)
	/usr/local/go/src/net/http/server.go:2007 +0x44
net/http.(*ServeMux).ServeHTTP(0xc000087cc0, 0x1acb2c0, 0xc0001a88c0, 0xc00070ec00)
	/usr/local/go/src/net/http/server.go:2387 +0x1bd
net/http.serverHandler.ServeHTTP(0xc0001a81c0, 0x1acb2c0, 0xc0001a88c0, 0xc00070ec00)
	/usr/local/go/src/net/http/server.go:2802 +0xa4
net/http.(*conn).serve(0xc00011f900, 0x1ad0180, 0xc000087540)
	/usr/local/go/src/net/http/server.go:1890 +0x875
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:2928 +0x384
2020-03-10 09:05:05.235186 I | http: panic serving 192.168.111.44:52030: runtime error: invalid memory address or nil pointer dereference
goroutine 289 [running]:
net/http.(*conn).serve.func1(0xc00052a000)
	/usr/local/go/src/net/http/server.go:1767 +0x139
panic(0x167cac0, 0x26bae00)
	/usr/local/go/src/runtime/panic.go:679 +0x1b2
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).validateEtcd(0xc0000c5b80, 0xc0002b2280, 0x0, 0x0, 0x8)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:233 +0x3e
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).ValidateUpdate(0xc0000c5b80, 0x1aa1880, 0xc0002b2280, 0x1000, 0x0)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:88 +0x2cf
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*validatingHandler).Handle(0xc0002d83c0, 0x1ad0180, 0xc000417280, 0xc0000409f0, 0x24, 0xc000045b00, 0x1d, 0xc0003cb540, 0x8, 0xc000045b20, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/validator.go:87 +0x71d
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).Handle(0xc0003bdbf0, 0x1ad0180, 0xc000417280, 0xc0000409f0, 0x24, 0xc000045b00, 0x1d, 0xc0003cb540, 0x8, 0xc000045b20, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/webhook.go:135 +0xa7
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).ServeHTTP(0xc0003bdbf0, 0x1acb2c0, 0xc0001ca1c0, 0xc0000f1800)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/http.go:87 +0xada
sigs.k8s.io/controller-runtime/pkg/webhook.instrumentedHook.func1(0x1acb2c0, 0xc0001ca1c0, 0xc0000f1800)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/server.go:123 +0xfc
net/http.HandlerFunc.ServeHTTP(0xc0003bdcb0, 0x1acb2c0, 0xc0001ca1c0, 0xc0000f1800)
	/usr/local/go/src/net/http/server.go:2007 +0x44
net/http.(*ServeMux).ServeHTTP(0xc000087cc0, 0x1acb2c0, 0xc0001ca1c0, 0xc0000f1800)
	/usr/local/go/src/net/http/server.go:2387 +0x1bd
net/http.serverHandler.ServeHTTP(0xc0001a81c0, 0x1acb2c0, 0xc0001ca1c0, 0xc0000f1800)
	/usr/local/go/src/net/http/server.go:2802 +0xa4
net/http.(*conn).serve(0xc00052a000, 0x1ad0180, 0xc000416380)
	/usr/local/go/src/net/http/server.go:1890 +0x875
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:2928 +0x384
2020-03-10 09:05:05.247718 I | http: panic serving 192.168.123.45:46778: runtime error: invalid memory address or nil pointer dereference
goroutine 292 [running]:
net/http.(*conn).serve.func1(0xc00052a8c0)
	/usr/local/go/src/net/http/server.go:1767 +0x139
panic(0x167cac0, 0x26bae00)
	/usr/local/go/src/runtime/panic.go:679 +0x1b2
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).validateEtcd(0xc000234000, 0xc000234280, 0x0, 0x0, 0x8)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:233 +0x3e
sigs.k8s.io/cluster-api/controlplane/kubeadm/api/v1alpha3.(*KubeadmControlPlane).ValidateUpdate(0xc000234000, 0x1aa1880, 0xc000234280, 0x1000, 0x0)
	/workspace/controlplane/kubeadm/api/v1alpha3/kubeadm_control_plane_webhook.go:88 +0x2cf
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*validatingHandler).Handle(0xc0002d83c0, 0x1ad0180, 0xc00021e080, 0xc000468000, 0x24, 0xc0004144e0, 0x1d, 0xc000342a88, 0x8, 0xc000414580, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/validator.go:87 +0x71d
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).Handle(0xc0003bdbf0, 0x1ad0180, 0xc00021e080, 0xc000468000, 0x24, 0xc0004144e0, 0x1d, 0xc000342a88, 0x8, 0xc000414580, ...)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/webhook.go:135 +0xa7
sigs.k8s.io/controller-runtime/pkg/webhook/admission.(*Webhook).ServeHTTP(0xc0003bdbf0, 0x1acb2c0, 0xc0001a8000, 0xc00070e000)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/admission/http.go:87 +0xada
sigs.k8s.io/controller-runtime/pkg/webhook.instrumentedHook.func1(0x1acb2c0, 0xc0001a8000, 0xc00070e000)
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/webhook/server.go:123 +0xfc
net/http.HandlerFunc.ServeHTTP(0xc0003bdcb0, 0x1acb2c0, 0xc0001a8000, 0xc00070e000)
	/usr/local/go/src/net/http/server.go:2007 +0x44
net/http.(*ServeMux).ServeHTTP(0xc000087cc0, 0x1acb2c0, 0xc0001a8000, 0xc00070e000)
	/usr/local/go/src/net/http/server.go:2387 +0x1bd
net/http.serverHandler.ServeHTTP(0xc0001a81c0, 0x1acb2c0, 0xc0001a8000, 0xc00070e000)
	/usr/local/go/src/net/http/server.go:2802 +0xa4
net/http.(*conn).serve(0xc00052a8c0, 0x1ad0180, 0xc0004174c0)
	/usr/local/go/src/net/http/server.go:1890 +0x875
created by net/http.(*Server).Serve
	/usr/local/go/src/net/http/server.go:2928 +0x384
airshipci@airship-ci-ubuntu-metal3-img-e47ccd5d3e:~/metal3-dev-env$ clear

@maelk
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maelk commented Mar 10, 2020

We hit this problem also in the Metal3 CI. We have exactly the same trace in the CACPK webhook server.

@kashifest
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I guess the problem is coming from here:

cd602ce#diff-d7a4119f467ae89beed82e2784fe2939R233

@maelk
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maelk commented Mar 10, 2020

The actual issue is probably that we do not have a ClusterConfiguration in the CR

@detiber
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detiber commented Mar 10, 2020

We probably should handle the nil pointer better, though

@ncdc
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ncdc commented Mar 10, 2020

/assign
/lifecycle active

@k8s-ci-robot k8s-ci-robot added the lifecycle/active Indicates that an issue or PR is actively being worked on by a contributor. label Mar 10, 2020
@ncdc ncdc mentioned this issue Mar 10, 2020
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@Xenwar Xenwar mentioned this issue Mar 11, 2020
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@vincepri vincepri added area/control-plane Issues or PRs related to control-plane lifecycle management area/clusterctl Issues or PRs related to clusterctl and removed area/clusterctl Issues or PRs related to clusterctl labels Mar 23, 2020
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🐛 Fix NPE when validating KCP etcd settings ncdc/cluster-api
7 participants
@ncdc @detiber @vincepri @maelk @Xenwar @k8s-ci-robot @kashifest