Closed
Description
What happened: upgraded from v1.11.0 to v1.12.2, now kube-proxy hangs, usually in less than a day
What you expected to happen: it should continue working
How to reproduce it (as minimally and precisely as possible): just have a normal kube-proxy running in ipvs mode. It gets stuck usually in less than a day.
Anything else we need to know?:
I've sent SIGABRT to the kube-proxy process to get a stack trace, and the only thing interesting is that when the bug happens goroutine 1 is reading from netlink, whereas when I send SIGABRT and the process is not stuck it is not reading from netlink.
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: goroutine 1 [syscall]:
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: syscall.Syscall6(0x2d, 0x3, 0xc42081c000, 0x1000, 0x0, 0xc42083deb0, 0xc42083dea4, 0x40fb86, 0x7f2ab9788aa8, 0x0)
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: /usr/local/go/src/syscall/asm_linux_amd64.s:44 +0x5
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: syscall.recvfrom(0x3, 0xc42081c000, 0x1000, 0x1000, 0x0, 0xc42083deb0, 0xc42083dea4, 0x101ffffffffffff, 0x0, 0x1000)
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: /usr/local/go/src/syscall/zsyscall_linux_amd64.go:1665 +0xa6
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: syscall.Recvfrom(0x3, 0xc42081c000, 0x1000, 0x1000, 0x0, 0x1000, 0x0, 0x0, 0x16ad4c0, 0x1f4d508)
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: /usr/local/go/src/syscall/syscall_unix.go:252 +0xaf
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: k8s.io/kubernetes/vendor/github.com/vishvananda/netlink/nl.(*NetlinkSocket).Receive(0xc4204d3440, 0x0, 0x0, 0x0, 0x16ad4c0, 0x1f4d508)
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: /workspace/anago-v1.12.2-beta.0.59+17c77c78982180/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/vendor/github.com/vishvananda/netlink/nl/nl_linux.go:613 +0x9b
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: k8s.io/kubernetes/vendor/github.com/docker/libnetwork/ipvs.execute(0xc4204d3440, 0xc42083e150, 0x0, 0x1, 0x2, 0xc420423740, 0x1, 0x2)
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: /workspace/anago-v1.12.2-beta.0.59+17c77c78982180/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/vendor/github.com/docker/libnetwork/ipvs/netlink.go:219 +0xd3
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: k8s.io/kubernetes/vendor/github.com/docker/libnetwork/ipvs.(*Handle).doCmdwithResponse(0xc420573990, 0xc420990750, 0x0, 0xc42003d501, 0xa, 0x10, 0xc420990701, 0xc42083e230, 0x118dd6b)
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: /workspace/anago-v1.12.2-beta.0.59+17c77c78982180/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/vendor/github.com/docker/libnetwork/ipvs/netlink.go:140 +0x20b
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: k8s.io/kubernetes/vendor/github.com/docker/libnetwork/ipvs.(*Handle).doCmd(0xc420573990, 0xc420990750, 0x0, 0x1, 0x60000020fc6e0, 0xc420990750)
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: /workspace/anago-v1.12.2-beta.0.59+17c77c78982180/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/vendor/github.com/docker/libnetwork/ipvs/netlink.go:149 +0x48
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: k8s.io/kubernetes/vendor/github.com/docker/libnetwork/ipvs.(*Handle).NewService(0xc420573990, 0xc420990750, 0x0, 0x0)
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: /workspace/anago-v1.12.2-beta.0.59+17c77c78982180/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/vendor/github.com/docker/libnetwork/ipvs/ipvs.go:117 +0x43
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: k8s.io/kubernetes/pkg/util/ipvs.(*runner).AddVirtualServer(0xc42052a340, 0xc420b0e550, 0x1e, 0xc42083e3b8)
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: /workspace/anago-v1.12.2-beta.0.59+17c77c78982180/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/pkg/util/ipvs/ipvs_linux.go:61 +0x60
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: k8s.io/kubernetes/pkg/proxy/ipvs.(*Proxier).syncService(0xc4201b3e00, 0xc420d53620, 0x21, 0xc420b0e550, 0xc420357901, 0x5, 0xc420d53620)
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: /workspace/anago-v1.12.2-beta.0.59+17c77c78982180/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/pkg/proxy/ipvs/proxier.go:1454 +0x635
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: k8s.io/kubernetes/pkg/proxy/ipvs.(*Proxier).syncProxyRules(0xc4201b3e00)
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: /workspace/anago-v1.12.2-beta.0.59+17c77c78982180/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/pkg/proxy/ipvs/proxier.go:803 +0x1081
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: k8s.io/kubernetes/pkg/proxy/ipvs.(*Proxier).(k8s.io/kubernetes/pkg/proxy/ipvs.syncProxyRules)-fm()
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: /workspace/anago-v1.12.2-beta.0.59+17c77c78982180/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/pkg/proxy/ipvs/proxier.go:395 +0x2a
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: k8s.io/kubernetes/pkg/util/async.(*BoundedFrequencyRunner).tryRun(0xc42042e3f0)
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: /workspace/anago-v1.12.2-beta.0.59+17c77c78982180/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/pkg/util/async/bounded_frequency_runner.go:217 +0xb6
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: k8s.io/kubernetes/pkg/util/async.(*BoundedFrequencyRunner).Loop(0xc42042e3f0, 0xc4200b0120)
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: /workspace/anago-v1.12.2-beta.0.59+17c77c78982180/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/pkg/util/async/bounded_frequency_runner.go:179 +0x211
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: k8s.io/kubernetes/pkg/proxy/ipvs.(*Proxier).SyncLoop(0xc4201b3e00)
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: /workspace/anago-v1.12.2-beta.0.59+17c77c78982180/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/pkg/proxy/ipvs/proxier.go:589 +0x4e
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: k8s.io/kubernetes/cmd/kube-proxy/app.(*ProxyServer).Run(0xc4207f2000, 0xc4207f2000, 0x0)
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: /workspace/anago-v1.12.2-beta.0.59+17c77c78982180/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/cmd/kube-proxy/app/server.go:568 +0x3dd
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: k8s.io/kubernetes/cmd/kube-proxy/app.(*Options).Run(0xc4201082c0, 0xc42063e230, 0x0)
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: /workspace/anago-v1.12.2-beta.0.59+17c77c78982180/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/cmd/kube-proxy/app/server.go:238 +0x69
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: k8s.io/kubernetes/cmd/kube-proxy/app.NewProxyCommand.func1(0xc4200f2500, 0xc42063e230, 0x0, 0x7)
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: /workspace/anago-v1.12.2-beta.0.59+17c77c78982180/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/cmd/kube-proxy/app/server.go:360 +0x156
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: k8s.io/kubernetes/vendor/github.com/spf13/cobra.(*Command).execute(0xc4200f2500, 0xc4200c4010, 0x7, 0x7, 0xc4200f2500, 0xc4200c4010)
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: /workspace/anago-v1.12.2-beta.0.59+17c77c78982180/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/vendor/github.com/spf13/cobra/command.go:760 +0x2c1
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: k8s.io/kubernetes/vendor/github.com/spf13/cobra.(*Command).ExecuteC(0xc4200f2500, 0xc4205dc090, 0x16076a0, 0xc4207a7ee8)
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: /workspace/anago-v1.12.2-beta.0.59+17c77c78982180/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/vendor/github.com/spf13/cobra/command.go:846 +0x30a
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: k8s.io/kubernetes/vendor/github.com/spf13/cobra.(*Command).Execute(0xc4200f2500, 0x1608b88, 0x20dcf40)
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: /workspace/anago-v1.12.2-beta.0.59+17c77c78982180/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/vendor/github.com/spf13/cobra/command.go:794 +0x2b
Nov 15 11:42:05 hex-48b-pm kube-proxy[5389]: main.main()
The last lines that it logged were:
Nov 15 07:48:52 hex-48b-pm kube-proxy[5389]: I1115 07:48:52.392942 5389 graceful_termination.go:93] lw: remote out of the list: 10.128.33.241:4059/TCP/10.125.2.26:4059
Nov 15 07:48:52 hex-48b-pm kube-proxy[5389]: I1115 07:48:52.392952 5389 graceful_termination.go:160] Trying to delete rs: 10.128.32.132:5432/TCP/10.125.2.13:6432
Nov 15 07:48:52 hex-48b-pm kube-proxy[5389]: E1115 07:48:52.392978 5389 graceful_termination.go:89] Try delete rs "10.128.32.132:5432/TCP/10.125.2.13:6432" err: Failed to delete rs "10.128.32.132:5432/TCP/10.125.2.13:6432", can't
find the real server
Nov 15 07:48:52 hex-48b-pm kube-proxy[5389]: I1115 07:48:52.392985 5389 graceful_termination.go:93] lw: remote out of the list: 10.128.32.132:5432/TCP/10.125.2.13:6432
Nov 15 07:48:52 hex-48b-pm kube-proxy[5389]: E1115 07:48:52.392992 5389 graceful_termination.go:183] Try flush graceful termination list err
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: I1115 07:49:52.393147 5389 graceful_termination.go:160] Trying to delete rs: 10.128.33.156:8125/TCP/10.125.2.21:8125
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: E1115 07:49:52.393260 5389 graceful_termination.go:89] Try delete rs "10.128.33.156:8125/TCP/10.125.2.21:8125" err: Failed to delete rs "10.128.33.156:8125/TCP/10.125.2.21:8125", can't find the real server
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: I1115 07:49:52.393272 5389 graceful_termination.go:93] lw: remote out of the list: 10.128.33.156:8125/TCP/10.125.2.21:8125
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: I1115 07:49:52.393281 5389 graceful_termination.go:160] Trying to delete rs: 10.128.33.142:6379/TCP/10.125.6.13:6379
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: E1115 07:49:52.393310 5389 graceful_termination.go:89] Try delete rs "10.128.33.142:6379/TCP/10.125.6.13:6379" err: Failed to delete rs "10.128.33.142:6379/TCP/10.125.6.13:6379", can't find the real server
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: I1115 07:49:52.393317 5389 graceful_termination.go:93] lw: remote out of the list: 10.128.33.142:6379/TCP/10.125.6.13:6379
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: I1115 07:49:52.393327 5389 graceful_termination.go:160] Trying to delete rs: 10.128.34.237:6379/TCP/10.125.6.11:6379
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: E1115 07:49:52.393355 5389 graceful_termination.go:89] Try delete rs "10.128.34.237:6379/TCP/10.125.6.11:6379" err: Failed to delete rs "10.128.34.237:6379/TCP/10.125.6.11:6379", can't find the real server
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: I1115 07:49:52.393362 5389 graceful_termination.go:93] lw: remote out of the list: 10.128.34.237:6379/TCP/10.125.6.11:6379
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: I1115 07:49:52.393371 5389 graceful_termination.go:160] Trying to delete rs: 10.128.33.200:5432/TCP/10.125.6.27:6432
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: E1115 07:49:52.393397 5389 graceful_termination.go:89] Try delete rs "10.128.33.200:5432/TCP/10.125.6.27:6432" err: Failed to delete rs "10.128.33.200:5432/TCP/10.125.6.27:6432", can't find the real server
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: I1115 07:49:52.393404 5389 graceful_termination.go:93] lw: remote out of the list: 10.128.33.200:5432/TCP/10.125.6.27:6432
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: I1115 07:49:52.393412 5389 graceful_termination.go:160] Trying to delete rs: 10.128.33.228:6379/TCP/10.125.2.63:6379
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: E1115 07:49:52.393440 5389 graceful_termination.go:89] Try delete rs "10.128.33.228:6379/TCP/10.125.2.63:6379" err: Failed to delete rs "10.128.33.228:6379/TCP/10.125.2.63:6379", can't find the real server
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: I1115 07:49:52.393447 5389 graceful_termination.go:93] lw: remote out of the list: 10.128.33.228:6379/TCP/10.125.2.63:6379
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: I1115 07:49:52.393455 5389 graceful_termination.go:160] Trying to delete rs: 10.128.34.247:5672/TCP/10.125.2.6:5672
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: E1115 07:49:52.393482 5389 graceful_termination.go:89] Try delete rs "10.128.34.247:5672/TCP/10.125.2.6:5672" err: Failed to delete rs "10.128.34.247:5672/TCP/10.125.2.6:5672", can't find the real server
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: I1115 07:49:52.393489 5389 graceful_termination.go:93] lw: remote out of the list: 10.128.34.247:5672/TCP/10.125.2.6:5672
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: I1115 07:49:52.393497 5389 graceful_termination.go:160] Trying to delete rs: 10.128.35.47:4007/TCP/10.125.2.15:4007
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: E1115 07:49:52.393523 5389 graceful_termination.go:89] Try delete rs "10.128.35.47:4007/TCP/10.125.2.15:4007" err: Failed to delete rs "10.128.35.47:4007/TCP/10.125.2.15:4007", can't find the real server
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: I1115 07:49:52.393530 5389 graceful_termination.go:93] lw: remote out of the list: 10.128.35.47:4007/TCP/10.125.2.15:4007
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: I1115 07:49:52.393538 5389 graceful_termination.go:160] Trying to delete rs: 10.128.33.241:4059/TCP/10.125.2.26:4059
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: E1115 07:49:52.393563 5389 graceful_termination.go:89] Try delete rs "10.128.33.241:4059/TCP/10.125.2.26:4059" err: Failed to delete rs "10.128.33.241:4059/TCP/10.125.2.26:4059", can't find the real server
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: I1115 07:49:52.393571 5389 graceful_termination.go:93] lw: remote out of the list: 10.128.33.241:4059/TCP/10.125.2.26:4059
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: I1115 07:49:52.393578 5389 graceful_termination.go:160] Trying to delete rs: 10.128.32.132:5432/TCP/10.125.2.13:6432
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: E1115 07:49:52.393605 5389 graceful_termination.go:89] Try delete rs "10.128.32.132:5432/TCP/10.125.2.13:6432" err: Failed to delete rs "10.128.32.132:5432/TCP/10.125.2.13:6432", can't find the real server
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: I1115 07:49:52.393613 5389 graceful_termination.go:93] lw: remote out of the list: 10.128.32.132:5432/TCP/10.125.2.13:6432
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: I1115 07:49:52.393621 5389 graceful_termination.go:160] Trying to delete rs: 10.128.33.252:6379/TCP/10.125.6.26:6379
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: E1115 07:49:52.393648 5389 graceful_termination.go:89] Try delete rs "10.128.33.252:6379/TCP/10.125.6.26:6379" err: Failed to delete rs "10.128.33.252:6379/TCP/10.125.6.26:6379", can't find the real server
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: I1115 07:49:52.393656 5389 graceful_termination.go:93] lw: remote out of the list: 10.128.33.252:6379/TCP/10.125.6.26:6379
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: I1115 07:49:52.393664 5389 graceful_termination.go:160] Trying to delete rs: 10.128.33.237:6379/TCP/10.125.6.34:6379
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: E1115 07:49:52.393690 5389 graceful_termination.go:89] Try delete rs "10.128.33.237:6379/TCP/10.125.6.34:6379" err: Failed to delete rs "10.128.33.237:6379/TCP/10.125.6.34:6379", can't find the real server
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: I1115 07:49:52.393697 5389 graceful_termination.go:93] lw: remote out of the list: 10.128.33.237:6379/TCP/10.125.6.34:6379
Nov 15 07:49:52 hex-48b-pm kube-proxy[5389]: E1115 07:49:52.393704 5389 graceful_termination.go:183] Try flush graceful termination list err
Nov 15 07:50:52 hex-48b-pm kube-proxy[5389]: I1115 07:50:52.393838 5389 graceful_termination.go:160] Trying to delete rs: 10.128.33.156:8125/TCP/10.125.2.21:8125
Nov 15 07:50:52 hex-48b-pm kube-proxy[5389]: E1115 07:50:52.393940 5389 graceful_termination.go:89] Try delete rs "10.128.33.156:8125/TCP/10.125.2.21:8125" err: device or resource busy
Nov 15 07:50:52 hex-48b-pm kube-proxy[5389]: I1115 07:50:52.393957 5389 graceful_termination.go:160] Trying to delete rs: 10.128.33.142:6379/TCP/10.125.6.13:6379
Nov 15 07:51:22 hex-48b-pm kube-proxy[5389]: E1115 07:51:22.420734 5389 proxier.go:1496] Failed to list IPVS destinations, error: invalid argument
Nov 15 07:51:22 hex-48b-pm kube-proxy[5389]: E1115 07:51:22.420763 5389 proxier.go:809] Failed to sync endpoint for service: 10.128.33.156:8125/TCP, err: invalid argument
Nov 15 07:51:22 hex-48b-pm kube-proxy[5389]: E1115 07:51:22.420889 5389 proxier.go:1485] Failed to get IPVS service, error: Expected only one service obtained=0
Nov 15 07:51:22 hex-48b-pm kube-proxy[5389]: E1115 07:51:22.420903 5389 proxier.go:809] Failed to sync endpoint for service: 10.128.35.150:6379/TCP, err: Expected only one service obtained=0
Nov 15 07:51:22 hex-48b-pm kube-proxy[5389]: E1115 07:51:22.420950 5389 proxier.go:1455] Failed to add IPVS service "monitoring/extradata-inserter:": file exists
Nov 15 07:51:22 hex-48b-pm kube-proxy[5389]: E1115 07:51:22.420961 5389 proxier.go:812] Failed to sync service: 10.128.34.54:80/TCP, err: file exists
Nov 15 07:51:22 hex-48b-pm kube-proxy[5389]: E1115 07:51:22.421886 5389 proxier.go:1544] Failed to add destination: 10.125.27.66:80, error: file exists
If I restart kube-proxy (manually, ugh), it all recovers and works fine. But it will get stuck again, eventually.
Environment:
- Kubernetes version (use
kubectl version): v1.12.2 - Cloud provider or hardware configuration: bare metal, 64 bit linux
- OS (e.g. from /etc/os-release): Ubuntu 16.04.5 LTS
- Kernel (e.g.
uname -a): 4.15.0-39-generic (but get it on the original 4.4 kernel as well) - Install tools: binary from https://storage.googleapis.com/kubernetes-release/release/v1.12.2/kubernetes-server-linux-amd64.tar.gz
- Others:
/kind bug