add systemd service files

[tinywrkb]

It would be great if podman-compose could be shipped with systems services files.

I'm attaching my systemd service files. They are pretty basic, probably need to be improved so I'm not adding these myself in a PR, but they are working for me.

/usr/lib/systemd/system/podman-compose@.service

[Unit]
Description=%i rootful pod (podman-compose)
After=network-online.target
Wants=network-online.target

[Service]
Type=oneshot
RemainAfterExit=true
WorkingDirectory=/etc/containers/compose/%i
ExecStart=/usr/bin/podman-compose up -d --remove-orphans
ExecStop=/usr/bin/podman-compose down

[Install]
WantedBy=multi-user.target

/usr/lib/systemd/user/podman-compose@.service

[Unit]
Description=%i rootless pod (podman-compose)

[Service]
Type=oneshot
RemainAfterExit=true
WorkingDirectory=%h/.config/containers/compose/%i
ExecStart=/usr/bin/podman-compose up -d --remove-orphans
ExecStop=/usr/bin/podman-compose down

[Install]
WantedBy=default.target

Previously I was using environment file in /etc/conf.d to set the compose file, but now that podman-compose defaults prioritize compose.yaml and compose.yml, I don't see a reason why we need this configurable.

If it's not obvious, each pod should have a folder in /etc/containers/compose/ and (edit:) or ~/.config/containers/compose/.

[mathstuf]

I feel like podman pod has this now. Maybe the ability to create a pod from a compose file would be useful?

[muayyad-alsadi]

the latest push
80e8527

creates a pod and put containers in it and passes proper dependencies --requires
so podman pod start pod_<project_name> will work fine.

please test that commit

[muayyad-alsadi]

for this compose

https://github.com/containers/podman-compose/blob/devel/tests/testlogs/docker-compose.yml

running podman generate systemd --new --name pod_testlogs

# container-testlogs_loop1_1.service
# autogenerated by Podman 3.4.2
# Thu Feb 17 17:08:21 EET 2022

[Unit]
Description=Podman container-testlogs_loop1_1.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 --pod-id-file %t/pod-pod_testlogs.pod-id --sdnotify=conmon --replace --name=testlogs_loop1_1 -d --label io.podman.compose.config-hash=123 --label io.podman.compose.project=testlogs --label io.podman.compose.version=0.0.1 --label com.docker.compose.project=testlogs --label com.docker.compose.project.working_dir=/home/alsadi/proj/podman-compose/tests/testlogs --label com.docker.compose.project.config_files=docker-compose.yml --label com.docker.compose.container-number=1 --label com.docker.compose.service=loop1 --net testlogs_default --network-alias loop1 busybox /bin/sh -c "for i in `seq 1 10000`; do echo \"loop1: $$i\"; sleep 1; done"
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=multi-user.target default.target
# pod-pod_testlogs.service
# autogenerated by Podman 3.4.2
# Thu Feb 17 17:08:21 EET 2022

[Unit]
Description=Podman pod-pod_testlogs.service
Documentation=man:podman-generate-systemd(1)
Wants=network-online.target
After=network-online.target
RequiresMountsFor=
Requires=container-testlogs_loop1_1.service container-testlogs_loop2_1.service container-testlogs_loop3_1.service
Before=container-testlogs_loop1_1.service container-testlogs_loop2_1.service container-testlogs_loop3_1.service

[Service]
Environment=PODMAN_SYSTEMD_UNIT=%n
Restart=on-failure
TimeoutStopSec=70
ExecStartPre=/bin/rm -f %t/pod-pod_testlogs.pid %t/pod-pod_testlogs.pod-id
ExecStartPre=/usr/bin/podman pod create --infra-conmon-pidfile %t/pod-pod_testlogs.pid --pod-id-file %t/pod-pod_testlogs.pod-id --name=pod_testlogs --share= --replace
ExecStart=/usr/bin/podman pod start --pod-id-file %t/pod-pod_testlogs.pod-id
ExecStop=/usr/bin/podman pod stop --ignore --pod-id-file %t/pod-pod_testlogs.pod-id -t 10
ExecStopPost=/usr/bin/podman pod rm --ignore -f --pod-id-file %t/pod-pod_testlogs.pod-id
PIDFile=%t/pod-pod_testlogs.pid
Type=forking

[Install]
WantedBy=multi-user.target default.target
# container-testlogs_loop2_1.service
# autogenerated by Podman 3.4.2
# Thu Feb 17 17:08:21 EET 2022

[Unit]
Description=Podman container-testlogs_loop2_1.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 --pod-id-file %t/pod-pod_testlogs.pod-id --sdnotify=conmon --replace --name=testlogs_loop2_1 -d --label io.podman.compose.config-hash=123 --label io.podman.compose.project=testlogs --label io.podman.compose.version=0.0.1 --label com.docker.compose.project=testlogs --label com.docker.compose.project.working_dir=/home/alsadi/proj/podman-compose/tests/testlogs --label com.docker.compose.project.config_files=docker-compose.yml --label com.docker.compose.container-number=1 --label com.docker.compose.service=loop2 --net testlogs_default --network-alias loop2 busybox /bin/sh -c "for i in `seq 1 10000`; do echo \"loop2: $$i\"; sleep 3; done"
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=multi-user.target default.target
# container-testlogs_loop3_1.service
# autogenerated by Podman 3.4.2
# Thu Feb 17 17:08:21 EET 2022

[Unit]
Description=Podman container-testlogs_loop3_1.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 --pod-id-file %t/pod-pod_testlogs.pod-id --sdnotify=conmon --replace --name=testlogs_loop3_1 -d busybox /bin/sh -c "for i in `seq 1 10000`; do echo \"loop3: $$i\"; sleep 3; done"
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=multi-user.target default.target

without --new

# pod-pod_testlogs.service
# autogenerated by Podman 3.4.2
# Thu Feb 17 17:11:22 EET 2022

[Unit]
Description=Podman pod-pod_testlogs.service
Documentation=man:podman-generate-systemd(1)
Wants=network-online.target
After=network-online.target
RequiresMountsFor=
Requires=container-testlogs_loop1_1.service container-testlogs_loop2_1.service container-testlogs_loop3_1.service
Before=container-testlogs_loop1_1.service container-testlogs_loop2_1.service container-testlogs_loop3_1.service

[Service]
Environment=PODMAN_SYSTEMD_UNIT=%n
Restart=on-failure
TimeoutStopSec=70
ExecStart=/usr/bin/podman start e8f34acbcfce-infra
ExecStop=/usr/bin/podman stop -t 10 e8f34acbcfce-infra
ExecStopPost=/usr/bin/podman stop -t 10 e8f34acbcfce-infra
PIDFile=/run/user/1000/overlay-containers/ef5bf3551aa8ca1bf4937259026e678d150c9031697d2ffa83715e9dbdbefd8e/userdata/conmon.pid
Type=forking

[Install]
WantedBy=multi-user.target default.target
# container-testlogs_loop2_1.service
# autogenerated by Podman 3.4.2
# Thu Feb 17 17:11:22 EET 2022

[Unit]
Description=Podman container-testlogs_loop2_1.service
Documentation=man:podman-generate-systemd(1)
Wants=network-online.target
After=network-online.target
RequiresMountsFor=/run/user/1000

[Service]
Environment=PODMAN_SYSTEMD_UNIT=%n
Restart=on-failure
TimeoutStopSec=70
ExecStart=/usr/bin/podman start testlogs_loop2_1
ExecStop=/usr/bin/podman stop -t 10 testlogs_loop2_1
ExecStopPost=/usr/bin/podman stop -t 10 testlogs_loop2_1
PIDFile=/run/user/1000/overlay-containers/19a1ffdc6d4ff0c0dcd51637de42ad5f7f0e439c9d711b397bee82d7ea0d7d42/userdata/conmon.pid
Type=forking

[Install]
WantedBy=multi-user.target default.target
# container-testlogs_loop3_1.service
# autogenerated by Podman 3.4.2
# Thu Feb 17 17:11:22 EET 2022

[Unit]
Description=Podman container-testlogs_loop3_1.service
Documentation=man:podman-generate-systemd(1)
Wants=network-online.target
After=network-online.target
RequiresMountsFor=/run/user/1000

[Service]
Environment=PODMAN_SYSTEMD_UNIT=%n
Restart=on-failure
TimeoutStopSec=70
ExecStart=/usr/bin/podman start testlogs_loop3_1
ExecStop=/usr/bin/podman stop -t 10 testlogs_loop3_1
ExecStopPost=/usr/bin/podman stop -t 10 testlogs_loop3_1
PIDFile=/run/user/1000/overlay-containers/32ef151142f1096c29f81ae2263d78ee0c1e884879c714a754cd6ea028d35fcf/userdata/conmon.pid
Type=forking

[Install]
WantedBy=multi-user.target default.target
# container-testlogs_loop1_1.service
# autogenerated by Podman 3.4.2
# Thu Feb 17 17:11:22 EET 2022

[Unit]
Description=Podman container-testlogs_loop1_1.service
Documentation=man:podman-generate-systemd(1)
Wants=network-online.target
After=network-online.target
RequiresMountsFor=/run/user/1000

[Service]
Environment=PODMAN_SYSTEMD_UNIT=%n
Restart=on-failure
TimeoutStopSec=70
ExecStart=/usr/bin/podman start testlogs_loop1_1
ExecStop=/usr/bin/podman stop -t 10 testlogs_loop1_1
ExecStopPost=/usr/bin/podman stop -t 10 testlogs_loop1_1
PIDFile=/run/user/1000/overlay-containers/f3e7af7caff32a9c7cc1459bcdf885223ad20a9dacc1be9a28ba03a33f0713ad/userdata/conmon.pid
Type=forking

[Install]
WantedBy=multi-user.target default.target

[muayyad-alsadi]

run

sudo podman-compose systemd --action create-unit

to create /etc/systemd/user/podman-compose@.service

now enter your project and type

podman-compose systemd --action register

now at any directory, you can type

systemctl --user enable --now podman-compose@<PROJECT>
systemctl --user start podman-compose@<PROJECT>
systemctl --user status podman-compose@<PROJECT>
systemctl --user stop podman-compose@<PROJECT>

[muayyad-alsadi]

@tinywrkb your feedback is highly appreciated

[tinywrkb]

Sorry for the late reply.

1. It should be possible to set a different root filesystem target when creating the unit with podman-compose systemd --action create-unit.
   My system is immutable, meaning /usr is read-only, so I would like to be able to package the generated unit.
   A--root option should solve this, and the expected value during packaging would be similar todestdir's value of the installation target of the buildsystem. I expect that I would need to set PYTHONPATH to $destdir/lib/python-$pyver/site-packages in order to be able to run podman-compose systemd when packaging podman-compose.
   The alternative is to generate the unit during build time, and install it with the default installation target.
   If the create-unit action is expected to be called the by user during run-time, not when packaging podman-compose, then by default it should create the unit in ~/.config/systemd/user.
2. A system unit is missing.
   Most of my containers are rootful, as rootless is not always practical. For example, some images were designed to run as rootful. Systemd 250 broke idmapping for systemd-homed users.

[muayyad-alsadi]

My bad! Actually /usr/lib/systemd/ is meant for package manager owned units not admin generated units. I'll change it to /etc/systemd

If the create-unit action is expected to be called the by user during run-time, not when packaging podman-compose, then by default it should create the unit in ~/.config/systemd/user.

It should be done once.

[tinywrkb]

My bad! Actually /usr/lib/systemd/ is meant for package manager owned units not admin generated units. I'll change it to /etc/systemd

For the user service, during run-time (not while packaging), I think it's more appropriate to put the service into ~/.config/systemd/user. This will allow creating the service by a non-root user without privilege escalation, which might not be allowed for the user.
A --global command-line option should change this default, and create the service in /etc/systemd/user.