podman 管理容器
范例：podman管理容器
安装httpd
#安装httpd
[root@centos8 ~]#podman pull httpd
[root@centos8 ~]#podman run -d --name web -p 80:80 httpd
[root@centos8 ~]#curl 127.0.0.1
<html><body><h1>It works!</h1></body></html>
[root@centos8 ~]#podman exec -it web /bin/sh
# ls
bin build cgi-bin conf error htdocs icons include logs modules
# cd htdocs
# cat index.html
<html><body><h1>It works!</h1></body></html>
# echo welcome to magedu > index.html
# exit
[root@centos8 ~]#curl 127.0.0.1
welcome to magedu
#安装nginx
[root@centos8 ~]#podman run -dt -p 80:80 --name nginx -v /data:/data -e NGINX_VERSION=1.16 nginx:1.16.0
[root@centos8 ~]#podman stop nginx
#将容器设为开机启动
[root@centos8 ~]#vim /lib/systemd/system/nginx_podman.service
[root@centos8 ~]#cat /lib/systemd/system/nginx_podman.service
[Unit]
Description=Podman Nginx Service
After=network.target
After=network-online.target
[Service]
Type=simple
ExecStart=/usr/bin/podman start -a nginx
ExecStop=/usr/bin/podman stop -t 10 nginx
Restart=always
[Install]
WantedBy=multi-user.target
[root@centos8 ~]#systemctl daemon-reload
[root@centos8 ~]#systemctl enable --now nginx_podman.service
[root@centos8 ~]#curl 127.0.0.1
#podman 查看日志
[root@centos8 ~]#podman logs nginx
10.0.0.8 - - [24/Feb/2020:14:19:45 +0000] "GET / HTTP/1.1" 200 612 "-" "curl/7.61.1" "-"
10.0.0.1 - - [24/Feb/2020:14:25:54 +0000] "GET / HTTP/1.1" 200 612 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.117 Safari/537.36" "-"
[root@centos8 ~]#podman port nginx
80/tcp -> 0.0.0.0:80
[root@centos8 ~]#ss -ntl
State Recv-Q Send-Q Local Address:Port Peer Address:Port
LISTEN 0 128 0.0.0.0:80 0.0.0.0:*
LISTEN 0 128 0.0.0.0:22 0.0.0.0:*
LISTEN 0 128 [::]:22 [::]:*
[root@centos8 ~]#systemctl stop nginx_podman.service
[root@centos8 ~]#ss -ntl
State Recv-Q Send-Q Local Address:Port Peer Address:Port
LISTEN 0 128 0.0.0.0:22 0.0.0.0:*
LISTEN 0 128 [::]:22 [::]:*
#查看进程信息
[root@centos8 ~]#systemctl start nginx_podman.service
[root@centos8 ~]#pstree -p
systemd(1)─┬─NetworkManager(664)─┬─{NetworkManager}(698)
│ └─{NetworkManager}(699)
├─VGAuthService(659)
├─agetty(766)
├─atd(763)
├─auditd(626)───{auditd}(627)
├─automount(789)─┬─{automount}(796)
│ ├─{automount}(797)
│ ├─{automount}(805)
│ └─{automount}(822)
├─conmon(2378)─┬─nginx(2388)───nginx(2401)
│ └─{conmon}(2380)
├─crond(762)
├─dbus-daemon(661)
├─podman(2308)─┬─{podman}(2309)
│ ├─{podman}(2310)
│ ├─{podman}(2311)
│ ├─{podman}(2312)
│ ├─{podman}(2313)
│ ├─{podman}(2316)
│ ├─{podman}(2321)
│ ├─{podman}(2326)
│ └─{podman}(2399)
├─polkitd(668)─┬─{polkitd}(697)
│ ├─{polkitd}(700)
│ ├─{polkitd}(703)
│ ├─{polkitd}(704)
│ └─{polkitd}(754)
├─rngd(667)───{rngd}(677)
├─rsyslogd(788)─┬─{rsyslogd}(795)
│ └─{rsyslogd}(798)
├─sshd(711)─┬─sshd(1361)───sshd(1375)───bash(1377)
│ └─sshd(1362)───sshd(1376)───bash(1380)───pstree(2504)
├─sssd(658)─┬─sssd_be(730)
│ └─sssd_nss(758)
├─systemd(1366)───(sd-pam)(1369)
├─systemd-journal(553)
├─systemd-logind(760)
├─systemd-udevd(586)
├─tuned(702)─┬─{tuned}(1073)
│ ├─{tuned}(1076)
│ └─{tuned}(1088)
└─vmtoolsd(660)
#nginx进程杀死后还会自动启动
[root@centos8 ~]#kill 2388
[root@centos8 ~]#ps aux|grep nginx
root 2939 1.1 8.4 908244 69240 ? Ssl 22:45 0:00 /usr/bin/podman start -a nginx
root 3009 0.0 0.3 142832 2652 ? Ssl 22:45 0:00 /usr/libexec/podman/conmon -s -c 9198c59a8a3db50801c52ceaa39521b4381ac46ab7c16907130244d2a328e823 -u 9198c59a8a3db50801c52ceaa39521b4381ac46ab7c16907130244d2a328e823 -n nginx -r /usr/bin/runc -b /var/lib/containers/storage/overlay-containers/9198c59a8a3db50801c52ceaa39521b4381ac46ab7c16907130244d2a328e823/userdata -p /var/run/containers/storage/overlay-containers/9198c59a8a3db50801c52ceaa39521b4381ac46ab7c16907130244d2a328e823/userdata/pidfile --exit-dir /var/run/libpod/exits --exit-command /usr/bin/podman --exit-command-arg --root --exit-command-arg /var/lib/containers/storage --exit-command-arg --runroot --exit-command-arg /var/run/containers/storage --exit-command-arg --log-level --exit-command-arg error --exit-command-arg --cgroup-manager --exit-command-arg systemd --exit-command-arg --tmpdir --exit-command-arg /var/run/libpod --exit-command-arg --runtime --exit-command-arg runc --exit-command-arg --storage-driver --exit-command-arg overlay --exit-command-arg --events-backend --exit-command-arg journald --exit-command-arg container --exit-command-arg cleanup --exit-command-arg 9198c59a8a3db50801c52ceaa39521b4381ac46ab7c16907130244d2a328e823 --socket-dir-path /var/run/libpod/socket -t -l k8s-file:/var/lib/containers/storage/overlay-containers/9198c59a8a3db50801c52ceaa39521b4381ac46ab7c16907130244d2a328e823/userdata/ctr.log --log-level error
root 3019 2.5 0.6 32656 5364 pts/0 Ss+ 22:45 0:00 nginx: master process nginx -g daemon off;
101 3031 0.0 0.3 33144 2636 pts/0 S+ 22:45 0:00 nginx: worker process
root 3034 0.0 0.1 12108 1072 pts/1 S+ 22:45 0:00 grep --color=auto nginx
[root@centos8 ~]#podman top nginx
USER PID PPID %CPU ELAPSED TTY TIME COMMAND
root 1 0 0.000 4m38.979412738s pts/0 0s nginx: master process nginx -g daemon off;
nginx 6 1 0.000 4m37.979473913s pts/0 0s nginx: worker process
[root@centos8 ~]#podman stats nginx
ID NAME CPU % MEM USAGE / LIMIT MEM % NET IO BLOCK IO PIDS
9198c59a8a3d nginx -- 2.474MB / 835.8MB 0.30% 2.25kB / 1.742kB -- / -- 2本文链接：http://www.yunweipai.com/34812.html
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