容器管理

1. ctr container help

root@suaxi:~# ctr container help
NAME:
   ctr containers - Manage containers

USAGE:
   ctr containers [global options] command [command options] [arguments...]

VERSION:
   1.7.27

COMMANDS:
   create                   Create container
   delete, del, remove, rm  Delete one or more existing containers
   info                     Get info about a container
   list, ls                 List containers
   label                    Set and clear labels for a container
   checkpoint               Checkpoint a container
   restore                  Restore a container from checkpoint

GLOBAL OPTIONS:
   --help, -h  show help

2. 查看容器

ctr container ls

查看容器中正在跑着的进程

ctr task ls

# 简写
ctr t ls

3. 创建静态容器

# 同上，c 为 container 的简写
ctr c create docker.io/library/nginx:alpine nginx-test

# 查看已创建的容器
ctr container ls
CONTAINER    IMAGE                             RUNTIME
nginx-test       docker.io/library/nginx:alpine    io.containerd.runc.v2

# 查看容器信息
ctr container info nginx-test

4. 启动容器

# 启动task，即表时在容器中运行了进程（动态容器）
ctr task start -d nginx-test

5. 进入容器

# --exec-id 表示为 exec 进程设置一个id（可以使用随机数，保证该id唯一即可）
ctr task exec --exec-id 1 nginx-test /bin/sh

6. 直接运行动态容器

# --net-host 网络模式为 host
ctr run -d --net-host docker.io/library/nginx:alpine nginx-test

7. 暂停容器

# 查看容器状态
ctr tasks ls
TASK        PID     STATUS
nginx-test  5687    RUNNING

# 暂停
ctr tasks pause nginx-test

# 再次查看状态
ctr tasks ls
TASK        PID     STATUS
nginx-test  5687    PAUSED

8. 恢复容器

ctr tasks resume nginx-test

# 查看容器状态
ctr tasks ls
TASK        PID     STATUS
nginx-test  5687    RUNNING

9. 停止容器

# 使用 kill 命令，在 ctr task -h 帮助文档中可查看详细信息
ctr tasks kill nginx-test

# 查看容器状态
ctr tasks ls
TASK        PID     STATUS
nginx-test  5687    STOPPED

10. 删除容器

# 停止/删除 task
ctr tasks delete nginx-test

# 删除容器（需先完成上述步骤）
ctr container delete nginx-test