Podman : Generate Systemd unit file2023/03/01

	It's possible to generate Systemd unit file and set auto-starting for containers.
[1]	Generate Systemd unit file and Set auto-starting for containers.

[root@dlp ~]#

podman images

REPOSITORY                   TAG         IMAGE ID      CREATED      SIZE
srv.world/almalinux-nginx    latest      f556ccecaed8  2 hours ago  310 MB
srv.world/almalinux-httpd    latest      ffd19e5b5339  2 hours ago  251 MB
docker.io/library/almalinux  latest      d3ffa43c2567  6 days ago   196 MB
docker.io/library/registry   2           0d153fadf70b  2 weeks ago  24.7 MB

# run container

[root@dlp ~]#

podman run --name almalinux-nginx -d -p 80:80 srv.world/almalinux-nginx

[root@dlp ~]#

podman ps

CONTAINER ID  IMAGE                             COMMAND               CREATED        STATUS            PORTS               NAMES
39ba8361888a  srv.world/almalinux-nginx:latest  /usr/sbin/nginx -...  4 seconds ago  Up 4 seconds ago  0.0.0.0:80->80/tcp  almalinux-nginx

# generate Systemd unit file

[root@dlp ~]#

podman generate systemd --new --files --name almalinux-nginx

/root/container-almalinux-nginx.service

[root@dlp ~]#

cat /root/container-almalinux-nginx.service

# container-almalinux-nginx.service
# autogenerated by Podman 4.0.0
# Mon Mar 14 12:58:23 JST 2022

[Unit]
Description=Podman container-almalinux-nginx.service
Documentation=man:podman-generate-systemd(1)
Wants=network-online.target
After=network-online.target
RequiresMountsFor=%t/containers

[Service]
Environment=PODMAN_SYSTEMD_UNIT=%n
Restart=on-failure
TimeoutStopSec=70
ExecStartPre=/bin/rm -f %t/%n.ctr-id
ExecStart=/usr/bin/podman run --cidfile=%t/%n.ctr-id --cgroups=no-conmon --rm --sdnotify=conmon --replace --name almalinux-nginx -d -p 80:80 srv.world/almalinux-nginx
ExecStop=/usr/bin/podman stop --ignore --cidfile=%t/%n.ctr-id
ExecStopPost=/usr/bin/podman rm -f --ignore --cidfile=%t/%n.ctr-id
Type=notify
NotifyAccess=all

[Install]
WantedBy=default.target

[root@dlp ~]#

cp /root/container-almalinux-nginx.service /usr/lib/systemd/system

# enable auto-starting

[root@dlp ~]#

systemctl enable container-almalinux-nginx.service

Created symlink /etc/systemd/system/default.target.wants/container-almalinux-nginx.service → /usr/lib/systemd/system/container-almalinux-nginx.service.

[2]	Set auto-starting for pods.

# run Pod

[root@dlp ~]#

podman run -dt --pod new:nginx-pod -p 80:80 srv.world/almalinux-nginx

[root@dlp ~]#

podman pod ls

POD ID        NAME        STATUS      CREATED        INFRA ID      # OF CONTAINERS
4ab1295bc57a  nginx-pod   Running     4 seconds ago  4c2b4c72a3df  2

# generate Systemd unit file

[root@dlp ~]#

podman generate systemd --files --name nginx-pod

/root/pod-nginx-pod.service
/root/container-wizardly_bohr.service

[root@dlp ~]#

cp /root/pod-nginx-pod.service /root/container-wizardly_bohr.service /usr/lib/systemd/system

# enable auto-starting

[root@dlp ~]#

systemctl enable pod-nginx-pod.service container-wizardly_bohr.service

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