佛山专业做网站公司旅游网站建设策划方案书
目录
1.1 基础控制指令
1.2 命令实践
1.3 备注
1.1 基础控制指令
# 查看对应资源: 状态 $ kubectl get <SOURCE_NAME> -n <NAMESPACE> -o wide # 查看对应资源: 事件信息 $ kubectl describe <SOURCE_NAME> <SOURCE_NAME_RANDOM_ID> -n <NAMESPACE> # 查看pod资源: 日志 $ kubectl logs -f <SOURCE_NAME_RANDOM_ID> [CONTINER_NAME] -n <NAMESPACE> # 创建资源: 根据资源清单 $ kubectl apply[or create] -f <SOURCE_FILENAME>.yaml # 删除资源: 根据资源清单 $ kubectl delete -f <SOURCE_FILENAME>.yaml # 修改资源: 根据反射出的etcd中的配置内容, 生产中不允许该项操作, 且命令禁止 $ kubectl edit <SOURCE_NAME> <SOURCE_NAME_RANDOM_ID> -n <NAMESPACE>
1.2 命令实践
# 查看node状态 $ kubectl get node # -o wide 显示更加详细的信息 # 查看service对象 $ kubectl get svc # 查看kube-system名称空间内的Pod $ kubectl get pod -n kube-system # 查看所有名称空间内的pod $ kubectl get pod -A # 查看集群信息 $ kubectl cluster-info # 查看各组件信息 $ kubectl -s https://api-server:6443 get componentstatuses # 查看各资源对象对应的api版本 $ kubectl explain pod # 查看帮助信息 $ kubectl explain deployment $ kubectl explain deployment.spec $ kubectl explain deployment.spec.replicas
1.3 备注
问题一 查看各组件信息，可能会发现错误
$ kubectl -s https://192.168.96.143:6443 get componentstatuses
Warning: v1 ComponentStatus is deprecated in v1.19+
NAME STATUS MESSAGE ERROR
scheduler Unhealthy Get "http://127.0.0.1:10251/healthz": dial tcp 127.0.0.1:10251: connect: connection refused
controller-manager Unhealthy Get "http://127.0.0.1:10252/healthz": dial tcp 127.0.0.1:10252: connect: connection refused
etcd-0 Healthy {"health":"true"}
问题一解决
$ vim /etc/kubernetes/manifests/kube-scheduler.yaml10 spec:11 containers:12 - command:13 - kube-scheduler14 - --authentication-kubeconfig=/etc/kubernetes/scheduler.conf15 - --authorization-kubeconfig=/etc/kubernetes/scheduler.conf16 - --bind-address=127.0.0.117 - --kubeconfig=/etc/kubernetes/scheduler.conf18 - --leader-elect=true19 - --port=0 # 将此行注释或删除$ vim /etc/kubernetes/manifests/kube-controller-manager.yaml10 spec:11 containers:12 - command:13 - kube-controller-manager14 - --allocate-node-cidrs=true15 - --authentication-kubeconfig=/etc/kubernetes/controller-manager.conf16 - --authorization-kubeconfig=/etc/kubernetes/controller-manager.conf17 - --bind-address=127.0.0.118 - --client-ca-file=/etc/kubernetes/pki/ca.crt19 - --cluster-cidr=10.244.0.0/1620 - --cluster-name=kubernetes21 - --cluster-signing-cert-file=/etc/kubernetes/pki/ca.crt22 - --cluster-signing-key-file=/etc/kubernetes/pki/ca.key23 - --controllers=*,bootstrapsigner,tokencleaner24 - --kubeconfig=/etc/kubernetes/controller-manager.conf25 - --port=0 # 将此行注释或删除$ systemctl restart kubelet$ kubectl -s https://192.168.96.143:6443 get componentstatuses
Warning: v1 ComponentStatus is deprecated in v1.19+
NAME STATUS MESSAGE ERROR
scheduler Healthy ok
controller-manager Healthy ok
etcd-0 Healthy {"health":"true"}