automation-tests/contrib/systemd/README.md

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# Setting up Podman service for systemd socket activation
## system-wide (podman service run as root)
The following unit file examples assume:
1. copied the `service` executable into `/usr/local/bin`
1. `chcon system_u:object_r:container_runtime_exec_t:s0 /usr/local/bin/service`
then:
1. copy the `podman.service` and `podman.socket` files into `/etc/systemd/system`
1. `systemctl daemon-reload`
1. `systemctl enable podman.socket`
1. `systemctl start podman.socket`
1. `systemctl status podman.socket podman.service`
Assuming the status messages show no errors, the libpod service is ready to respond to the APIv2 on the unix domain socket `/run/podman/podman.sock`
### podman.service
```toml
[Unit]
Description=Podman API Service
Requires=podman.socket
After=podman.socket
Documentation=man:podman-api(1)
StartLimitIntervalSec=0
[Service]
Type=oneshot
Environment=REGISTRIES_CONFIG_PATH=/etc/containers/registries.conf
ExecStart=/usr/local/bin/service
TimeoutStopSec=30
KillMode=process
[Install]
WantedBy=multi-user.target
Also=podman.socket
```
### podman.socket
```toml
[Unit]
Description=Podman API Socket
Documentation=man:podman-api(1)
[Socket]
ListenStream=%t/podman/podman.sock
SocketMode=0660
[Install]
WantedBy=sockets.target
```
## user (podman service run as given user aka "rootless")
The following unit file examples assume:
1. you have a created a directory `~/bin`
1. copied the `service` executable into `~/bin`
1. `chcon system_u:object_r:container_runtime_exec_t:s0 ~/bin/service`
then:
1. `mkdir -p ~/.config/systemd/user`
1. copy the `podman.service` and `podman.socket` files into `~/.config/systemd/user`
1. `systemctl --user enable podman.socket`
1. `systemctl --user start podman.socket`
1. `systemctl --user status podman.socket podman.service`
Assuming the status messages show no errors, the libpod service is ready to respond to the APIv2 on the unix domain socket `/run/user/$(id -u)/podman/podman.sock`
### podman.service
```toml
[Unit]
Description=Podman API Service
Requires=podman.socket
After=podman.socket
Documentation=man:podman-api(1)
StartLimitIntervalSec=0
[Service]
Type=oneshot
Environment=REGISTRIES_CONFIG_PATH=/etc/containers/registries.conf
ExecStart=%h/bin/service
TimeoutStopSec=30
KillMode=process
[Install]
WantedBy=multi-user.target
Also=podman.socket
```
### podman.socket
```toml
[Unit]
Description=Podman API Socket
Documentation=man:podman-api(1)
[Socket]
ListenStream=%t/podman/podman.sock
SocketMode=0660
[Install]
WantedBy=sockets.target
```