容器怎么执行多行命令？

使用 args 参数，多行命令用分号;隔开。

initContainers:
- name: busybox
  image: busybox
  command: ['/bin/sh', '-c']
  args:
    [
      'wget -O /data/math-game.jar https://arthas.aliyun.com/math-game.jar;wget -O /data/arthas-boot.jar https://arthas.aliyun.com/arthas-boot.jar',
    ]
  volumeMounts:
    - mountPath: /data
      name: data

容器因为没有常驻进程启动完就结束了

那就给容器加上一个常驻进程，如：tail -f /dev/null。

containers:
- name: busybox
  image: busybox
  resources:
    limits:
      memory: '128Mi'
      cpu: '500m'
  command: ['/bin/sh', '-c']
  args: ['echo hello kubernetes;tail -f /dev/null']
  volumeMounts:
    - mountPath: /data
      name: data

Master 节点无法部署 Pod

修改主节点的容忍度

kubectl taint node master node-role.kubernetes.io/master:NoSchedule-