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Implement agent simulator as an independent bin (#1493)
This patch implements agent simulator as add an independent bin, it runs with kubemark which simulates kubelet, and mainly watches NetworkPolicies, AddressGroups and AppliedToGroups from antrea controller and prints the events of these resources to log. With agent simulator, we do not need to lauch large cluster for scale test. The agent simulator uses labels and nodeaffinity to disable antrea-agent/antrea-controller running on the simulated nodes, and we can add some taints to not allow other pods to run on simulated nodes. To use agent simulator, please refer to docs/antrea-agent-simulator.md.
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,22 @@ | ||
| FROM golang:1.15 as antrea-build | ||
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| WORKDIR /antrea | ||
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| COPY go.mod /antrea/go.mod | ||
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| RUN go mod download | ||
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| COPY . /antrea | ||
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| RUN make antrea-agent-simulator | ||
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| FROM ubuntu:20.04 | ||
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| LABEL maintainer="Antrea <[email protected]>" | ||
| LABEL description="The Docker image to deploy the Antrea simulator. " | ||
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| USER root | ||
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| COPY --from=antrea-build /antrea/bin/* /usr/local/bin/ | ||
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,16 @@ | ||
| apiVersion: apps/v1 | ||
| kind: DaemonSet | ||
| metadata: | ||
| name: antrea-agent | ||
| spec: | ||
| template: | ||
| spec: | ||
| affinity: | ||
| nodeAffinity: | ||
| requiredDuringSchedulingIgnoredDuringExecution: | ||
| nodeSelectorTerms: | ||
| - matchExpressions: | ||
| - key: antrea/instance | ||
| operator: NotIn | ||
| values: | ||
| - simulator |
153 changes: 153 additions & 0 deletions
153
build/yamls/patches/simulator/antrea-agent-simulator.yml
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,153 @@ | ||
| --- | ||
| apiVersion: v1 | ||
| data: | ||
| content.type: test-cluster | ||
| kind: ConfigMap | ||
| metadata: | ||
| name: node-configmap | ||
| namespace: kube-system | ||
| --- | ||
| apiVersion: apps/v1 | ||
| kind: StatefulSet | ||
| metadata: | ||
| name: antrea-agent-simulator | ||
| namespace: kube-system | ||
| spec: | ||
| podManagementPolicy: Parallel | ||
| replicas: 1 | ||
| selector: | ||
| matchLabels: | ||
| app: antrea | ||
| component: antrea-agent-simulator | ||
| serviceName: antrea-agent-simulator | ||
| template: | ||
| metadata: | ||
| labels: | ||
| app: antrea | ||
| component: antrea-agent-simulator | ||
| spec: | ||
| affinity: | ||
| nodeAffinity: | ||
| requiredDuringSchedulingIgnoredDuringExecution: | ||
| nodeSelectorTerms: | ||
| - matchExpressions: | ||
| - key: antrea/instance | ||
| operator: NotIn | ||
| values: | ||
| - simulator | ||
| serviceAccountName: antrea-agent | ||
| initContainers: | ||
| - name: init-inotify-limit | ||
| image: projects.registry.vmware.com/library/busybox:latest | ||
| command: ['sysctl', '-w', 'fs.inotify.max_user_instances=200'] | ||
| securityContext: | ||
| privileged: true | ||
| volumes: | ||
| - name: kubeconfig-volume | ||
| secret: | ||
| secretName: kubeconfig | ||
| - name: logs-volume | ||
| hostPath: | ||
| path: /var/log | ||
| containers: | ||
| - name: simulator | ||
| image: projects.registry.vmware.com/antrea/antrea-ubuntu-simulator:latest | ||
| imagePullPolicy: IfNotPresent | ||
| command: ['/usr/local/bin/antrea-agent-simulator', '-v', '5'] | ||
| env: | ||
| - name: POD_NAME | ||
| valueFrom: | ||
| fieldRef: | ||
| fieldPath: metadata.name | ||
| - name: POD_NAMESPACE | ||
| valueFrom: | ||
| fieldRef: | ||
| fieldPath: metadata.namespace | ||
| - name: NODE_NAME | ||
| valueFrom: | ||
| fieldRef: | ||
| fieldPath: metadata.name | ||
| volumeMounts: | ||
| - name: kubeconfig-volume | ||
| mountPath: /kubeconfig | ||
| readOnly: true | ||
| - name: logs-volume | ||
| mountPath: /var/log | ||
| - name: hollow-kubelet | ||
| image: projects.registry.vmware.com/antrea/kubemark:v1.18.4 | ||
| ports: | ||
| - containerPort: 4194 | ||
| - containerPort: 10250 | ||
| - containerPort: 10255 | ||
| env: | ||
| - name: CONTENT_TYPE | ||
| valueFrom: | ||
| configMapKeyRef: | ||
| name: node-configmap | ||
| key: content.type | ||
| - name: NODE_NAME | ||
| valueFrom: | ||
| fieldRef: | ||
| fieldPath: metadata.name | ||
| command: [ | ||
| "/kubemark", | ||
| "--morph=kubelet", | ||
| "--name=$(NODE_NAME)", | ||
| "--kubeconfig=/kubeconfig/admin.conf", | ||
| "$(CONTENT_TYPE)", | ||
| "--v=2", | ||
| "--log-file=/var/log/kubelet-$(NODE_NAME).log", | ||
| "--node-labels=antrea/instance=simulator", | ||
| ] | ||
| volumeMounts: | ||
| - name: kubeconfig-volume | ||
| mountPath: /kubeconfig | ||
| readOnly: true | ||
| - name: logs-volume | ||
| mountPath: /var/log | ||
| resources: | ||
| requests: | ||
| cpu: 20m | ||
| memory: 50M | ||
| securityContext: | ||
| privileged: true | ||
| - name: hollow-proxy | ||
| image: projects.registry.vmware.com/antrea/kubemark:v1.18.4 | ||
| env: | ||
| - name: CONTENT_TYPE | ||
| valueFrom: | ||
| configMapKeyRef: | ||
| name: node-configmap | ||
| key: content.type | ||
| - name: NODE_NAME | ||
| valueFrom: | ||
| fieldRef: | ||
| fieldPath: metadata.name | ||
| command: [ | ||
| "/kubemark", | ||
| "--morph=proxy", | ||
| "--name=$(NODE_NAME)", | ||
| "--use-real-proxier=false", | ||
| "--kubeconfig=/kubeconfig/admin.conf", | ||
| "$(CONTENT_TYPE)", | ||
| "--alsologtostderr", | ||
| "--v=2", | ||
| "--log-file=/var/log/kubelet-$(NODE_NAME).log" | ||
| ] | ||
| volumeMounts: | ||
| - name: kubeconfig-volume | ||
| mountPath: /kubeconfig | ||
| readOnly: true | ||
| - name: logs-volume | ||
| mountPath: /var/log | ||
| resources: | ||
| requests: | ||
| cpu: 20m | ||
| memory: 50M | ||
| tolerations: | ||
| - effect: NoExecute | ||
| key: node.kubernetes.io/unreachable | ||
| operator: Exists | ||
| - effect: NoExecute | ||
| key: node.kubernetes.io/not-ready | ||
| operator: Exists |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,16 @@ | ||
| apiVersion: apps/v1 | ||
| kind: Deployment | ||
| metadata: | ||
| name: antrea-controller | ||
| spec: | ||
| template: | ||
| spec: | ||
| affinity: | ||
| nodeAffinity: | ||
| requiredDuringSchedulingIgnoredDuringExecution: | ||
| nodeSelectorTerms: | ||
| - matchExpressions: | ||
| - key: antrea/instance | ||
| operator: NotIn | ||
| values: | ||
| - simulator |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,63 @@ | ||
| // Copyright 2021 Antrea Authors | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
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| // The simulator binary is responsible to run simulated nodes for antrea agent. | ||
| // It watches NetworkPolicies, AddressGroups and AppliedToGroups from antrea | ||
| // controller and prints the events of these resources to log. | ||
| package main | ||
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| import ( | ||
| "flag" | ||
| "os" | ||
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| "github.com/spf13/cobra" | ||
| "k8s.io/component-base/logs" | ||
| "k8s.io/klog" | ||
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| "github.com/vmware-tanzu/antrea/pkg/log" | ||
| "github.com/vmware-tanzu/antrea/pkg/version" | ||
| ) | ||
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| func main() { | ||
| logs.InitLogs() | ||
| defer logs.FlushLogs() | ||
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| command := newSimulatorCommand() | ||
| if err := command.Execute(); err != nil { | ||
| logs.FlushLogs() | ||
| os.Exit(1) | ||
| } | ||
| } | ||
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| func newSimulatorCommand() *cobra.Command { | ||
| cmd := &cobra.Command{ | ||
| Use: "antrea-agent-simulator", | ||
| Long: "The Antrea agent simulator.", | ||
| Run: func(cmd *cobra.Command, args []string) { | ||
| log.InitLogFileLimits(cmd.Flags()) | ||
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| if err := run(); err != nil { | ||
| klog.Fatalf("Error running agent: %v", err) | ||
| } | ||
| }, | ||
| Version: version.GetFullVersionWithRuntimeInfo(), | ||
| } | ||
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| flags := cmd.Flags() | ||
| log.AddFlags(flags) | ||
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| // Install log flags | ||
| flags.AddGoFlagSet(flag.CommandLine) | ||
| return cmd | ||
| } |
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