Docker命令-top

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命令

docker top

描述

Display the running processes of a container
显示容器的运行进程

用法

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docker top CONTAINER [ps OPTIONS]

选项

无

注意

无

示例

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# 通过exec执行的ps命令显示的进程信息
$ docker exec -it nginx ps aux
PID   USER     TIME  COMMAND
    1 root      0:00 nginx: master process nginx -g daemon off;
   23 nginx     0:00 nginx: worker process
   24 nginx     0:00 nginx: worker process
   30 root      0:00 ps aux
# 通过exec查看的PID是容器内部的PID,而top命令显示的是本机的真实PID,如下
$ docker top nginx
UID   PID     PPID   C  STIME  TTY     TIME       CMD
root  50643   50626  0  22:50  pts/0   00:00:00   nginx: master process nginx -g daemon off;
101   50684   50643  0  22:50  pts/0   00:00:00   nginx: worker process
101   50685   50643  0  22:50  pts/0   00:00:00   nginx: worker process
$ ps aux |grep nginx
root      50643  0.0  0.1   5992  2724 pts/0    Ss+  22:50   0:00 nginx: master process nginx -g daemon off;
101       50684  0.0  0.0   6448  1672 pts/0    S+   22:50   0:00 nginx: worker process
101       50685  0.0  0.0   6448  1448 pts/0    S+   22:50   0:00 nginx: worker process