Docker top和stats区别

docker top需要指定容器，且不是动态显示容器资源使用情况

docker stats 动态打印所有容器资源使用情况

[root@localhost ~]# docker top --help

Usage:  docker top CONTAINER [ps OPTIONS]

Display the running processes of a container

Aliases:
  docker container top, docker top
[root@localhost ~]#
[root@localhost ~]#
[root@localhost ~]# docker ps
CONTAINER ID   IMAGE                                                       COMMAND                   CREATED      STATUS      PORTS                                                  NAMES
cf5c43b1e361   mysql:5.7                                                   "docker-entrypoint.s…"   5 days ago   Up 5 days   33060/tcp, 0.0.0.0:8306->3306/tcp, :::8306->3306/tcp   jira_mysql
a6c6157c89eb   registry.cn-hangzhou.aliyuncs.com/yangmingquan/jira:8.1.0   "/docker-entrypoint.…"   5 days ago   Up 5 days   0.0.0.0:2800->8080/tcp, :::2800->8080/tcp              jira
[root@localhost ~]#
[root@localhost ~]# docker top jira
UID                 PID                 PPID                C                   STIME               TTY                 TIME                CMD
root                28543               28508               0                   6月28               ?                   00:54:49            /usr/lib/jvm/java-1.8-openjdk/bin/java -Djava.util.logging.config.file=/opt/atlassian/jira/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Xms384m -Xmx2048m -XX:InitialCodeCacheSize=32m -XX:ReservedCodeCacheSize=512m -Djava.awt.headless=true -Datlassian.standalone=JIRA -Dorg.apache.jasper.runtime.BodyContentImpl.LIMIT_BUFFER=true -Dmail.mime.decodeparameters=true -Dorg.dom4j.factory=com.atlassian.core.xml.InterningDocumentFactory -XX:-OmitStackTraceInFastThrow -Djava.locale.providers=COMPAT -Djira.home=/var/atlassian/jira -Datlassian.plugins.startup.options=-fg -Djdk.tls.ephemeralDHKeySize=2048 -Djava.protocol.handler.pkgs=org.apache.catalina.webresources -Dorg.apache.catalina.security.SecurityListener.UMASK=0027 -Xloggc:/opt/atlassian/jira/logs/atlassian-jira-gc-%t.log -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=5 -XX:GCLogFileSize=20M -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+PrintGCCause -javaagent:/opt/atlassian/jira/atlassian-agent.jar -Dignore.endorsed.dirs= -classpath /opt/atlassian/jira/bin/bootstrap.jar:/opt/atlassian/jira/bin/tomcat-juli.jar -Dcatalina.base=/opt/atlassian/jira -Dcatalina.home=/opt/atlassian/jira -Djava.io.tmpdir=/opt/atlassian/jira/temp org.apache.catalina.startup.Bootstrap start
[root@localhost ~]#

[root@localhost ~]# docker stats

CONTAINER ID   NAME         CPU %     MEM USAGE / LIMIT     MEM %     NET I/O          BLOCK I/O     PIDS
cf5c43b1e361   jira_mysql   0.07%     575.2MiB / 15.51GiB   3.62%     364MB / 826MB    0B / 82.3GB   49
a6c6157c89eb   jira         0.15%     5.321GiB / 15.51GiB   34.30%    2.13GB / 743MB   0B / 66MB     215