mirror of
https://github.com/k3s-io/kubernetes.git
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85 lines
3.3 KiB
Go
85 lines
3.3 KiB
Go
/*
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Copyright 2018 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package kubelet
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import (
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"fmt"
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"k8s.io/klog/v2"
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kubeadmconstants "k8s.io/kubernetes/cmd/kubeadm/app/constants"
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"k8s.io/kubernetes/cmd/kubeadm/app/util/initsystem"
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)
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// TryStartKubelet attempts to bring up kubelet service
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func TryStartKubelet() {
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// If we notice that the kubelet service is inactive, try to start it
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initSystem, err := initsystem.GetInitSystem()
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if err != nil {
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fmt.Println("[kubelet-start] No supported init system detected, won't make sure the kubelet is running properly.")
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return
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}
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if !initSystem.ServiceExists(kubeadmconstants.Kubelet) {
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fmt.Println("[kubelet-start] Couldn't detect a kubelet service, can't make sure the kubelet is running properly.")
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}
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// This runs "systemctl daemon-reload && systemctl restart kubelet"
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if err := initSystem.ServiceRestart(kubeadmconstants.Kubelet); err != nil {
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klog.Warningf("[kubelet-start] WARNING: unable to start the kubelet service: [%v]\n", err)
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fmt.Printf("[kubelet-start] Please ensure kubelet is reloaded and running manually.\n")
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}
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}
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// TryStopKubelet attempts to bring down the kubelet service momentarily
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func TryStopKubelet() {
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// If we notice that the kubelet service is inactive, try to start it
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initSystem, err := initsystem.GetInitSystem()
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if err != nil {
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fmt.Println("[kubelet-start] No supported init system detected, won't make sure the kubelet not running for a short period of time while setting up configuration for it.")
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return
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}
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if !initSystem.ServiceExists(kubeadmconstants.Kubelet) {
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fmt.Println("[kubelet-start] Couldn't detect a kubelet service, can't make sure the kubelet not running for a short period of time while setting up configuration for it.")
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}
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// This runs "systemctl daemon-reload && systemctl stop kubelet"
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if err := initSystem.ServiceStop(kubeadmconstants.Kubelet); err != nil {
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klog.Warningf("[kubelet-start] WARNING: unable to stop the kubelet service momentarily: [%v]\n", err)
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}
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}
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// TryRestartKubelet attempts to restart the kubelet service
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func TryRestartKubelet() {
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// If we notice that the kubelet service is inactive, try to start it
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initSystem, err := initsystem.GetInitSystem()
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if err != nil {
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fmt.Println("[kubelet-start] No supported init system detected, won't make sure the kubelet not running for a short period of time while setting up configuration for it.")
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return
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}
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if !initSystem.ServiceExists(kubeadmconstants.Kubelet) {
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fmt.Println("[kubelet-start] Couldn't detect a kubelet service, can't make sure the kubelet not running for a short period of time while setting up configuration for it.")
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}
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// This runs "systemctl daemon-reload && systemctl stop kubelet"
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if err := initSystem.ServiceRestart(kubeadmconstants.Kubelet); err != nil {
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klog.Warningf("[kubelet-start] WARNING: unable to restart the kubelet service momentarily: [%v]\n", err)
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}
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}
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