When enabled, it's desired for the podman-varlink process to startup on
boot or upon socket-activation, whichever happens first. However,
with `KillMode=none` systemd will never kill any podman-varlink
processes. This makes it easily possible for multiple podman-varlink
processes to be running, and fight each other to service a single socket.
---
For example:
Prior to this commit, this will result in four podman-varlink processes
being run:
```
systemctl enable io.podman.socket
systemctl enable io.podman.service
systemctl start io.podman.socket
systemctl start io.podman.service
systemctl start io.podman.service
```
Fix this by setting `KillMode=process` and `TimeoutStopSec=30` (default
is 90). This results in podman-varlink exiting on its own after a minute
of being idle (--timeout=60000). Alternatively, systemd will manage the
service stop by sending a SIGTERM, then if podman-varlink has not exited
within `TimeoutStopSec`, a SIGKILL will be sent.
Signed-off-by: Chris Evich <cevich@redhat.com>
This enables user to interact with varlink and create/manage rootless
containers through it.
Using as:
`varlink call unix:/run/user/1000/podman/io.podman/io.podman.ListContainers`
Signed-off-by: Matej Marusak <mmarusak@redhat.com>
