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Add support for stopping kubelet in node-e2e

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This makes it possible to stop the kubelet, do some work, and then
start it again.
This commit is contained in:
Odin Ugedal 2019-08-16 15:06:31 +02:00
parent 2830827442
commit 8b6160a367
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1 changed files with 20 additions and 4 deletions
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24
test/e2e_node/util.go
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@ -373,18 +373,34 @@ func getCRIClient() (internalapi.RuntimeService, internalapi.ImageManagerService
} }
// TODO: Find a uniform way to deal with systemctl/initctl/service operations. #34494 // TODO: Find a uniform way to deal with systemctl/initctl/service operations. #34494
func restartKubelet() { func findRunningKubletServiceName() string {
stdout, err := exec.Command("sudo", "systemctl", "list-units", "kubelet*", "--state=running").CombinedOutput() stdout, err := exec.Command("sudo", "systemctl", "list-units", "kubelet*", "--state=running").CombinedOutput()
framework.ExpectNoError(err) framework.ExpectNoError(err)
regex := regexp.MustCompile("(kubelet-\\w+)") regex := regexp.MustCompile("(kubelet-\\w+)")
matches := regex.FindStringSubmatch(string(stdout)) matches := regex.FindStringSubmatch(string(stdout))
framework.ExpectNotEqual(len(matches), 0) framework.ExpectNotEqual(len(matches), 0)
kube := matches[0] kubeletServiceName := matches[0]
framework.Logf("Get running kubelet with systemctl: %v, %v", string(stdout), kube) framework.Logf("Get running kubelet with systemctl: %v, %v", string(stdout), kubeletServiceName)
stdout, err = exec.Command("sudo", "systemctl", "restart", kube).CombinedOutput() return kubeletServiceName
}
func restartKubelet() {
kubeletServiceName := findRunningKubletServiceName()
stdout, err := exec.Command("sudo", "systemctl", "restart", kubeletServiceName).CombinedOutput()
framework.ExpectNoError(err, "Failed to restart kubelet with systemctl: %v, %v", err, stdout) framework.ExpectNoError(err, "Failed to restart kubelet with systemctl: %v, %v", err, stdout)
} }
// stopKubelet will kill the running kubelet, and returns a func that will restart the process again
func stopKubelet() func() {
kubeletServiceName := findRunningKubletServiceName()
stdout, err := exec.Command("sudo", "systemctl", "kill", kubeletServiceName).CombinedOutput()
framework.ExpectNoError(err, "Failed to stop kubelet with systemctl: %v, %v", err, stdout)
return func() {
stdout, err := exec.Command("sudo", "systemctl", "start", kubeletServiceName).CombinedOutput()
framework.ExpectNoError(err, "Failed to restart kubelet with systemctl: %v, %v", err, stdout)
}
}
func toCgroupFsName(cgroupName cm.CgroupName) string { func toCgroupFsName(cgroupName cm.CgroupName) string {
if framework.TestContext.KubeletConfig.CgroupDriver == "systemd" { if framework.TestContext.KubeletConfig.CgroupDriver == "systemd" {
return cgroupName.ToSystemd() return cgroupName.ToSystemd()