docker之ps命令大解析
学好这个命令，你会感觉非常的的心用手，尤其是在docker野容器清理的时候，方便快速的找到所需要的容器，再配合管道符，相干什么就可以干什么
docker ps --help
[root@localhost ~]# docker ps --help
Usage: docker ps [OPTIONS]
List containers
Options:
-a, --all Show all containers (default shows just running)
-f, --filter filter Filter output based on conditions provided
--format string Pretty-print containers using a Go template
-n, --last int Show n last created containers (includes all states) (default -1)
-l, --latest Show the latest created container (includes all states)
--no-trunc Don't truncate output
-q, --quiet Only display container IDs
-s, --size Display total file sizes参数 | 作用 | 系统解释 |
-a,–all | 展现出来所有状态的容器 | Show all containers (default shows just running) |
-f,–filter | 过滤显示 | Filter output based on conditions provided |
–format | 格式化显示 | Pretty-print containers using a Go template |
-n,–list | 简单理解，就是显示输出第n行的docker ps内容 | Show n last created containers (includes all states) (default -1) |
-l, --latest | 相当于ps -n 1 | Show the latest created container (includes all states) |
–no-trunc | 不会截断输出 | Don’t truncate output |
-q, --quiet | 只显示容器的id | Only display container IDs |
-s, --size | 容器文件大小 | Display total file sizes |
实操解释
###docker ps 只会输出是up状态的容器
[root@localhost ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
154748d5a3bf nginx:v1 "./sbin/nginx -g 'da…" 2 hours ago Up 2 hours 80/tcp web4
026d9b1f23fe nginx:v1 "./sbin/nginx -g 'da…" 2 hours ago Up 2 hours 80/tcp web3
42e2b0a3ebb2 nginx:v1 "./sbin/nginx -g 'da…" 2 hours ago Up 2 hours 80/tcp web2
###无论什么状态的容器都会输出
[root@localhost ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
154748d5a3bf nginx:v1 "./sbin/nginx -g 'da…" 2 hours ago Up 2 hours 80/tcp web4
026d9b1f23fe nginx:v1 "./sbin/nginx -g 'da…" 2 hours ago Up 2 hours 80/tcp web3
42e2b0a3ebb2 nginx:v1 "./sbin/nginx -g 'da…" 2 hours ago Up 2 hours 80/tcp web2
91bb31b24e75 nginx:v1 "./sbin/nginx -g 'da…" 2 hours ago Exited (0) 2 hours ago web1
[root@localhost ~]# docker ps --all
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
154748d5a3bf nginx:v1 "./sbin/nginx -g 'da…" 2 hours ago Up 2 hours 80/tcp web4
026d9b1f23fe nginx:v1 "./sbin/nginx -g 'da…" 2 hours ago Up 2 hours 80/tcp web3
42e2b0a3ebb2 nginx:v1 "./sbin/nginx -g 'da…" 2 hours ago Up 2 hours 80/tcp web2
91bb31b24e75 nginx:v1 "./sbin/nginx -g 'da…" 2 hours ago Exited (0) 2 hours ago web1
[root@localhost ~]#
###查看容器前几列
[root@localhost ~]# docker ps -n 2
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
154748d5a3bf nginx:v1 "./sbin/nginx -g 'da…" 2 hours ago Up 2 hours 80/tcp web4
026d9b1f23fe nginx:v1 "./sbin/nginx -g 'da…" 2 hours ago Up 2 hours 80/tcp web3
[root@localhost ~]# docker ps -n 3
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
154748d5a3bf nginx:v1 "./sbin/nginx -g 'da…" 2 hours ago Up 2 hours 80/tcp web4
026d9b1f23fe nginx:v1 "./sbin/nginx -g 'da…" 2 hours ago Up 2 hours 80/tcp web3
42e2b0a3ebb2 nginx:v1 "./sbin/nginx -g 'da…" 2 hours ago Up 2 hours 80/tcp web2
[root@localhost ~]# docker ps -l
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
154748d5a3bf nginx:v1 "./sbin/nginx -g 'da…" 2 hours ago Up 2 hours 80/tcp web4
###无截断的输出，也就是输出全部
[root@localhost ~]# docker ps --no-trunc
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
154748d5a3bfcff91a86ab236d2f1917543a41dc4aaccb379d1534b8269b035e nginx:v1 "./sbin/nginx -g 'daemon off;'" 2 hours ago Up 2 hours 80/tcp web4
026d9b1f23fef0d7b73953e93ffd77f0cd54a09c3c70b660f9f14071483dd1a9 nginx:v1 "./sbin/nginx -g 'daemon off;'" 2 hours ago Up 2 hours 80/tcp web3
42e2b0a3ebb2f92ce027f949d9fce77cbbd30ef9dfb83f093fc89820d3803eea nginx:v1 "./sbin/nginx -g 'daemon off;'" 2 hours ago Up 2 hours 80/tcp web2
###值显示容器id
[root@localhost ~]# docker ps -q
154748d5a3bf
026d9b1f23fe
42e2b0a3ebb2
###显示容器的大小
[root@localhost ~]# docker ps -s
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES SIZE
154748d5a3bf nginx:v1 "./sbin/nginx -g 'da…" 2 hours ago Up 2 hours 80/tcp web4 2B (virtual 415MB)
026d9b1f23fe nginx:v1 "./sbin/nginx -g 'da…" 2 hours ago Up 2 hours 80/tcp web3 2B (virtual 415MB)
42e2b0a3ebb2 nginx:v1 "./sbin/nginx -g 'da…" 2 hours ago Up 2 hours 80/tcp web2 2B (virtual 415MB)docker -f,–filter参数详解
这个大家可以理解为带有参数进行过滤
- 注意点
- 目前已知的条件
#过滤以web开头的容器
[root@localhost ~]# docker ps -f name=^web
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
154748d5a3bf nginx:v1 "./sbin/nginx -g 'da…" 2 hours ago Up 2 hours 80/tcp web4
026d9b1f23fe nginx:v1 "./sbin/nginx -g 'da…" 2 hours ago Up 2 hours 80/tcp web3
42e2b0a3ebb2 nginx:v1 "./sbin/nginx -g 'da…" 2 hours ago Up 2 hours 80/tcp web2
#过滤以eb2结尾的容器
[root@localhost ~]# docker ps -f name=eb2$
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
42e2b0a3ebb2 nginx:v1 "./sbin/nginx -g 'da…" 2 hours ago Up 2 hours 80/tcp web2
#过滤状态是exit的容器
[root@localhost ~]# docker ps -f status=exited
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
91bb31b24e75 nginx:v1 "./sbin/nginx -g 'da…" 2 hours ago Exited (0) 2 hours ago web1
####其余的大家可以自己尝试docker --format
这个大家可以这样理解，这个命令可以改变docker ps命令输出的格式
–format可选 | 功能显示 |
.ID | 容器ID |
.Image | 镜像ID |
.Command | 执行的命令 |
.CreatedAt | 容器创建时间 |
.RunningFor | 运行时长 |
.Ports | 暴露的端口 |
.Status | 容器状态 |
.Names | 容器名称 |
.Label | 分配给容器的所有标签 |
.Mounts | 容器挂载的卷 |
.Networks | 容器所用的网络名称 |
#开始我的表演
[root@localhost ~]# docker ps -a #正常是这样输出到屏幕的
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
154748d5a3bf nginx:v1 "./sbin/nginx -g 'da…" 9 hours ago Up 9 hours 80/tcp web4
026d9b1f23fe nginx:v1 "./sbin/nginx -g 'da…" 9 hours ago Up 9 hours 80/tcp web3
42e2b0a3ebb2 nginx:v1 "./sbin/nginx -g 'da…" 9 hours ago Up 9 hours 80/tcp web2
91bb31b24e75 nginx:v1 "./sbin/nginx -g 'da…" 9 hours ago Exited (0) 9 hours ago web1
[root@localhost ~]# docker ps --format "table {{.ID}}\t{{.Names}}\t{{.Ports}}" #利用--format后，可以指定他的输出格式，变成这样输出，是不是很酷，剩下的可以自己去探究吧
CONTAINER ID NAMES PORTS
154748d5a3bf web4 80/tcp
026d9b1f23fe web3 80/tcp
42e2b0a3ebb2 web2 80/tcp为了找个女朋友而奋斗：结束语
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