分析原因是因为容器重启后 httpd.pid 未删除，导致重启的时候检测到 apache 服务在运行
error

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httpd (pid 1) already running
httpd (pid 1) already running
httpd (pid 1) already running
httpd (pid 1) already running
httpd (pid 1) already running
httpd (pid 1) already running
httpd (pid 1) already running
httpd (pid 1) already running
httpd (pid 1) already running
httpd (pid 1) already running
httpd (pid 1) already running
httpd (pid 1) already running
httpd (pid 1) already running
httpd (pid 1) already running
httpd (pid 1) already running
httpd (pid 1) already running
httpd (pid 1) already running
httpd (pid 1) already running
httpd (pid 1) already running
httpd (pid 1) already running
httpd (pid 1) already running
httpd (pid 1) already running
httpd (pid 1) already running
httpd (pid 1) already running
httpd (pid 1) already running
httpd (pid 1) already running
httpd (pid 1) already running
httpd (pid 1) already running
root@ubuntu:/var/lib/docker/overlay2#

docker container inspect 7e336d136e827e8b3daffbd80363d0daf4d0a40a54c5dfda85727bfdf1e9f7e5

搜索

root@ubuntu:/var/lib/docker/overlay2# find ./ -name apache2.pid

删除

root@ubuntu:/var/lib/docker/overlay2# rm -rf ./92cce34fc1ca4585ec25d729949f573a92b39ac0dd7f2fc8cc42b5a17016afb4/diff/run/apache2/apache2.pid

即可启动容器了

如果使用了容器编排的方式，请参考操作
https://forums.docker.com/t/httpd-already-running/33397

本文标题：dockerhttpd(pid1)alreadyrunning
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