Merge pull request k3s-io#5411 from rbrtbnfgl/wireguard-native-releas…

…e1.21

[Release 1.21] Wireguard native flannel support

go.mod

@@ -33,7 +33,7 @@ replace (
 	go.etcd.io/etcd => github.com/k3s-io/etcd v0.5.0-alpha.5.0.20220113195313-6c2233a709e8 //k3s-release-3.4
 	golang.org/x/crypto => golang.org/x/crypto v0.0.0-20210220033148-5ea612d1eb83
 	golang.org/x/net => golang.org/x/net v0.0.0-20210224082022-3d97a244fca7
-	golang.org/x/sys => golang.org/x/sys v0.0.0-20210831042530-f4d43177bf5e
+	golang.org/x/sys => golang.org/x/sys v0.0.0-20220114195835-da31bd327af9
 	google.golang.org/genproto => google.golang.org/genproto v0.0.0-20200513103714-09dca8ec2884
 	google.golang.org/grpc => google.golang.org/grpc v1.27.1
 	gopkg.in/square/go-jose.v2 => gopkg.in/square/go-jose.v2 v2.2.2

go.sum

@@ -564,6 +564,7 @@ github.com/joho/godotenv v0.0.0-20161216230537-726cc8b906e3/go.mod h1:7hK45KPybA
 github.com/jonboulle/clockwork v0.1.0/go.mod h1:Ii8DK3G1RaLaWxj9trq07+26W01tbo22gdxWY5EU2bo=
 github.com/jonboulle/clockwork v0.2.2 h1:UOGuzwb1PwsrDAObMuhUnj0p5ULPj8V/xJ7Kx9qUBdQ=
 github.com/jonboulle/clockwork v0.2.2/go.mod h1:Pkfl5aHPm1nk2H9h0bjmnJD/BcgbGXUBGnn1kMkgxc8=
+github.com/josharian/native v0.0.0-20200817173448-b6b71def0850 h1:uhL5Gw7BINiiPAo24A2sxkcDI0Jt/sqp1v5xQCniEFA=
 github.com/josharian/native v0.0.0-20200817173448-b6b71def0850/go.mod h1:7X/raswPFr05uY3HiLlYeyQntB6OO7E/d2Cu7qoaN2w=
 github.com/jpillora/backoff v1.0.0/go.mod h1:J/6gKK9jxlEcS3zixgDgUAsiuZ7yrSoa/FX5e0EB2j4=
 github.com/jsimonetti/rtnetlink v0.0.0-20190606172950-9527aa82566a/go.mod h1:Oz+70psSo5OFh8DBl0Zv2ACw7Esh6pPUphlvZG9x7uw=
@@ -575,6 +576,7 @@ github.com/jsimonetti/rtnetlink v0.0.0-20201220180245-69540ac93943/go.mod h1:z4c
 github.com/jsimonetti/rtnetlink v0.0.0-20210122163228-8d122574c736/go.mod h1:ZXpIyOK59ZnN7J0BV99cZUPmsqDRZ3eq5X+st7u/oSA=
 github.com/jsimonetti/rtnetlink v0.0.0-20210212075122-66c871082f2b/go.mod h1:8w9Rh8m+aHZIG69YPGGem1i5VzoyRC8nw2kA8B+ik5U=
 github.com/jsimonetti/rtnetlink v0.0.0-20210525051524-4cc836578190/go.mod h1:NmKSdU4VGSiv1bMsdqNALI4RSvvjtz65tTMCnD05qLo=
+github.com/jsimonetti/rtnetlink v0.0.0-20211022192332-93da33804786 h1:N527AHMa793TP5z5GNAn/VLPzlc0ewzWdeP/25gDfgQ=
 github.com/jsimonetti/rtnetlink v0.0.0-20211022192332-93da33804786/go.mod h1:v4hqbTdfQngbVSZJVWUhGE/lbTFf9jb+ygmNUDQMuOs=
 github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
 github.com/json-iterator/go v1.1.7/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
@@ -726,8 +728,10 @@ github.com/matttproud/golang_protobuf_extensions v1.0.2-0.20181231171920-c182aff
 github.com/matttproud/golang_protobuf_extensions v1.0.2-0.20181231171920-c182affec369/go.mod h1:BSXmuO+STAnVfrANrmjBb36TMTDstsz7MSK+HVaYKv4=
 github.com/mdlayher/ethernet v0.0.0-20190606142754-0394541c37b7/go.mod h1:U6ZQobyTjI/tJyq2HG+i/dfSoFUt8/aZCM+GKtmFk/Y=
 github.com/mdlayher/ethtool v0.0.0-20210210192532-2b88debcdd43/go.mod h1:+t7E0lkKfbBsebllff1xdTmyJt8lH37niI6kwFk9OTo=
+github.com/mdlayher/ethtool v0.0.0-20211028163843-288d040e9d60 h1:tHdB+hQRHU10CfcK0furo6rSNgZ38JT8uPh70c/pFD8=
 github.com/mdlayher/ethtool v0.0.0-20211028163843-288d040e9d60/go.mod h1:aYbhishWc4Ai3I2U4Gaa2n3kHWSwzme6EsG/46HRQbE=
 github.com/mdlayher/genetlink v1.0.0/go.mod h1:0rJ0h4itni50A86M2kHcgS85ttZazNt7a8H2a2cw0Gc=
+github.com/mdlayher/genetlink v1.1.0 h1:k2YQT3959rJOF7gOvhdfQ0lut7QMIZiuVlJANheoZ+E=
 github.com/mdlayher/genetlink v1.1.0/go.mod h1:1cAHdejIIk9zbWfP3gW30vY1QUlwyuhaqfkyANVVf10=
 github.com/mdlayher/netlink v0.0.0-20190409211403-11939a169225/go.mod h1:eQB3mZE4aiYnlUsyGGCOpPETfdQq4Jhsgf1fk3cwQaA=
 github.com/mdlayher/netlink v1.0.0/go.mod h1:KxeJAFOFLG6AjpyDkQ/iIhxygIUKD+vcwqcnu43w/+M=
@@ -739,11 +743,13 @@ github.com/mdlayher/netlink v1.2.2-0.20210123213345-5cc92139ae3e/go.mod h1:bacnN
 github.com/mdlayher/netlink v1.3.0/go.mod h1:xK/BssKuwcRXHrtN04UBkwQ6dY9VviGGuriDdoPSWys=
 github.com/mdlayher/netlink v1.4.0/go.mod h1:dRJi5IABcZpBD2A3D0Mv/AiX8I9uDEu5oGkAVrekmf8=
 github.com/mdlayher/netlink v1.4.1/go.mod h1:e4/KuJ+s8UhfUpO9z00/fDZZmhSrs+oxyqAS9cNgn6Q=
+github.com/mdlayher/netlink v1.4.2 h1:3sbnJWe/LETovA7yRZIX3f9McVOWV3OySH6iIBxiFfI=
 github.com/mdlayher/netlink v1.4.2/go.mod h1:13VaingaArGUTUxFLf/iEovKxXji32JAtF858jZYEug=
 github.com/mdlayher/raw v0.0.0-20190606142536-fef19f00fc18/go.mod h1:7EpbotpCmVZcu+KCX4g9WaRNuu11uyhiW7+Le1dKawg=
 github.com/mdlayher/raw v0.0.0-20191009151244-50f2db8cc065/go.mod h1:7EpbotpCmVZcu+KCX4g9WaRNuu11uyhiW7+Le1dKawg=
 github.com/mdlayher/socket v0.0.0-20210307095302-262dc9984e00/go.mod h1:GAFlyu4/XV68LkQKYzKhIo/WW7j3Zi0YRAz/BOoanUc=
 github.com/mdlayher/socket v0.0.0-20211007213009-516dcbdf0267/go.mod h1:nFZ1EtZYK8Gi/k6QNu7z7CgO20i/4ExeQswwWuPmG/g=
+github.com/mdlayher/socket v0.0.0-20211102153432-57e3fa563ecb h1:2dC7L10LmTqlyMVzFJ00qM25lqESg9Z4u3GuEXN5iHY=
 github.com/mdlayher/socket v0.0.0-20211102153432-57e3fa563ecb/go.mod h1:nFZ1EtZYK8Gi/k6QNu7z7CgO20i/4ExeQswwWuPmG/g=
 github.com/mholt/certmagic v0.6.2-0.20190624175158-6a42ef9fe8c2/go.mod h1:g4cOPxcjV0oFq3qwpjSA30LReKD8AoIfwAY9VvG35NY=
 github.com/miekg/dns v1.0.14/go.mod h1:W1PPwlIAgtquWBMBEV9nkV9Cazfe8ScdGz/Lj7v3Nrg=
@@ -752,6 +758,7 @@ github.com/miekg/dns v1.1.35 h1:oTfOaDH+mZkdcgdIjH6yBajRGtIwcwcaR+rt23ZSrJs=
 github.com/miekg/dns v1.1.35/go.mod h1:KNUDUusw/aVsxyTYZM1oqvCicbwhgbNgztCETuNZ7xM=
 github.com/miekg/pkcs11 v1.0.3 h1:iMwmD7I5225wv84WxIG/bmxz9AXjWvTWIbM/TYHvWtw=
 github.com/miekg/pkcs11 v1.0.3/go.mod h1:XsNlhZGX73bx86s2hdc/FuaLm2CPZJemRLMA+WTFxgs=
+github.com/mikioh/ipaddr v0.0.0-20190404000644-d465c8ab6721 h1:RlZweED6sbSArvlE924+mUcZuXKLBHA35U7LN621Bws=
 github.com/mikioh/ipaddr v0.0.0-20190404000644-d465c8ab6721/go.mod h1:Ickgr2WtCLZ2MDGd4Gr0geeCH5HybhRJbonOgQpvSxc=
 github.com/mindprince/gonvml v0.0.0-20190828220739-9ebdce4bb989 h1:PS1dLCGtD8bb9RPKJrc8bS7qHL6JnW1CZvwzH9dPoUs=
 github.com/mindprince/gonvml v0.0.0-20190828220739-9ebdce4bb989/go.mod h1:2eu9pRWp8mo84xCg6KswZ+USQHjwgRhNp06sozOdsTY=
@@ -1183,8 +1190,8 @@ golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20201207232520-09787c993a3a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c h1:5KslGYwFpkhGh+Q16bwMP3cOontH8FOep7tGV86Y7SQ=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sys v0.0.0-20210831042530-f4d43177bf5e h1:XMgFehsDnnLGtjvjOfqWSUzt0alpTR1RSEuznObga2c=
-golang.org/x/sys v0.0.0-20210831042530-f4d43177bf5e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220114195835-da31bd327af9 h1:XfKQ4OlFl8okEOr5UvAqFRVj8pY/4yfcXrddB8qAbU0=
+golang.org/x/sys v0.0.0-20220114195835-da31bd327af9/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201117132131-f5c789dd3221/go.mod h1:Nr5EML6q2oocZ2LXRh80K7BxOlk5/8JxuGnuhpl+muw=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210220032956-6a3ed077a48d h1:SZxvLBoTP5yHO3Frd4z4vrF+DBX9vMVanchswa69toE=
@@ -1284,7 +1291,9 @@ golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8T
 golang.zx2c4.com/go118/netip v0.0.0-20211111135330-a4a02eeacf9d/go.mod h1:5yyfuiqVIJ7t+3MqrpTQ+QqRkMWiESiyDvPNvKYCecg=
 golang.zx2c4.com/wintun v0.0.0-20211104114900-415007cec224/go.mod h1:deeaetjYA+DHMHg+sMSMI58GrEteJUUzzw7en6TJQcI=
 golang.zx2c4.com/wireguard v0.0.0-20211129173154-2dd424e2d808/go.mod h1:TjUWrnD5ATh7bFvmm/ALEJZQ4ivKbETb6pmyj1vUoNI=
+golang.zx2c4.com/wireguard v0.0.0-20220117163742-e0b8f11489c5 h1:fREdS2tvy7LARzKUA868aAABc35XOo4CMHydwv+alR4=
 golang.zx2c4.com/wireguard v0.0.0-20220117163742-e0b8f11489c5/go.mod h1:TjUWrnD5ATh7bFvmm/ALEJZQ4ivKbETb6pmyj1vUoNI=
+golang.zx2c4.com/wireguard/wgctrl v0.0.0-20211230205640-daad0b7ba671 h1:tJAYx7pB6b5bNqi7XatStqFT2zFAxhXcGDq1R6FqqjU=
 golang.zx2c4.com/wireguard/wgctrl v0.0.0-20211230205640-daad0b7ba671/go.mod h1:Q2XNgour4QSkFj0BWCkVlW0HWJwQgNMsMahpSlI0Eno=
 gonum.org/v1/gonum v0.0.0-20180816165407-929014505bf4/go.mod h1:Y+Yx5eoAFn32cQvJDxZx5Dpnq+c3wtXuadVZAcxbbBo=
 gonum.org/v1/gonum v0.0.0-20190331200053-3d26580ed485/go.mod h1:2ltnJ7xHfj0zHS40VVPYEAAMTa3ZGguvHGBSJeRWqE0=
@@ -1399,6 +1408,7 @@ honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt
 honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
 honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
 honnef.co/go/tools v0.2.1/go.mod h1:lPVVZ2BS5TfnjLyizF7o7hv7j9/L+8cZY2hLyjP9cGY=
+honnef.co/go/tools v0.2.2 h1:MNh1AVMyVX23VUHE2O27jm6lNj3vjO5DexS4A1xvnzk=
 honnef.co/go/tools v0.2.2/go.mod h1:lPVVZ2BS5TfnjLyizF7o7hv7j9/L+8cZY2hLyjP9cGY=
 k8s.io/gengo v0.0.0-20200114144118-36b2048a9120/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8IAqLxYwwyPxAX1Pzy0ii0=
 k8s.io/gengo v0.0.0-20200413195148-3a45101e95ac/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8IAqLxYwwyPxAX1Pzy0ii0=

pkg/agent/flannel/flannel.go

@@ -33,6 +33,7 @@ import (
 	_ "github.com/flannel-io/flannel/backend/hostgw"
 	_ "github.com/flannel-io/flannel/backend/ipsec"
 	_ "github.com/flannel-io/flannel/backend/vxlan"
+	_ "github.com/flannel-io/flannel/backend/wireguard"
 )
 
 const (

pkg/agent/flannel/setup.go

@@ -74,6 +74,11 @@ const (
 	"SubnetRemoveCommand": "read PUBLICKEY; wg set flannel.1 peer $PUBLICKEY remove"
 }`
 
+	wireguardNativeBackend = `{
+	"Type": "wireguard",
+	"PersistentKeepaliveInterval": 25
+}`
+
 	emptyIPv6Network = "::/0"
 
 	ipv4 = iota
@@ -164,6 +169,9 @@ func createFlannelConf(nodeConfig *config.Node) error {
 		}
 	case config.FlannelBackendWireguard:
 		backendConf = strings.ReplaceAll(wireguardBackend, "%flannelConfDir%", filepath.Dir(nodeConfig.FlannelConfFile))
+		logrus.Warnf("The wireguard backend is deprecated and will be removed in k3s v1.26, please switch to wireguard-native. Check our docs for information about how to migrate")
+	case config.FlannelBackendWireguardNative:
+		backendConf = wireguardNativeBackend
 	default:
 		return fmt.Errorf("Cannot configure unknown flannel backend '%s'", nodeConfig.FlannelBackend)
 	}

pkg/cli/cmds/server.go

@@ -193,7 +193,7 @@ var ServerFlags = []cli.Flag{
 	ClusterDomain,
 	cli.StringFlag{
 		Name:        "flannel-backend",
-		Usage:       "(networking) One of 'none', 'vxlan', 'ipsec', 'host-gw', or 'wireguard'",
+		Usage:       "(networking) One of 'none', 'vxlan', 'ipsec', 'host-gw', 'wireguard'(deprecated), or 'wireguard-native'",
 		Destination: &ServerConfig.FlannelBackend,
 		Value:       "vxlan",
 	},

pkg/daemons/config/types.go

@@ -17,12 +17,13 @@ import (
 )
 
 const (
-	FlannelBackendNone      = "none"
-	FlannelBackendVXLAN     = "vxlan"
-	FlannelBackendHostGW    = "host-gw"
-	FlannelBackendIPSEC     = "ipsec"
-	FlannelBackendWireguard = "wireguard"
-	CertificateRenewDays    = 90
+	FlannelBackendNone            = "none"
+	FlannelBackendVXLAN           = "vxlan"
+	FlannelBackendHostGW          = "host-gw"
+	FlannelBackendIPSEC           = "ipsec"
+	FlannelBackendWireguard       = "wireguard"
+	FlannelBackendWireguardNative = "wireguard-native"
+	CertificateRenewDays          = 90
 )
 
 type Node struct {