节点管理¶
节点操作
# 驱赶节点上所有 pod
kubectl drain 192.168.100.102 --delete-local-data --ignore-daemonsets
# 删除节点
kubectl delete node
# 生成加入集群命令 (master 上执行)
kubeadm token create --print-join-command
label 操作
# 显示 label
kubectl get nodes --show-labels
# 添加 label
kubectl label nodes <node-name> <label-key>=<label-value>
# 删除 label
kubectl label nodes <node-name> <label-key>-
# 修改 label
kubectl label nodes <node-name> <label-key>=<label-value> --overwrite
使用 label 调度
apiVersion: apps/v1beta1
kind: Deployment
metadata:
name: nginx
spec:
replicas: 1
template:
metadata:
labels:
app: nginx
spec:
containers:
- name: nginx
image: nginx:latest
nodeSelector:
label_name: label_value