2:39 a.m.
Hi Brian,
thanks for reaching out!
On Thu, Jan 30, 2020 at 12:04 AM Brian Fallik <bfallik(a)gmail.com> wrote:
Hi,
Does anyone have an example they can share of managing a pod in systemd?
podman-systemd-generate supports pods. It will generate one service for the
pod (pause container) and one for each container of the pod and set the
dependencies accordingly.
I'm trying to follow the guidelines outlined in
https://www.redhat.com/sysadmin/podman-shareable-systemd-services
which work great for containers but now I'm unsure how to proceed for a
pod.
Ultimately I'm trying to deploy prometheus alongside nginx as a reverse
proxy, and deploying both containers inside a pod seems easiest from a
networking perspective and also sensible logic since the two containers are
coupled into a single, functional unit.
As you noted, the upper blog post focuses on the container-case only. With
the next version of Podman, podman-generate-systemd ships with a --new flag
to generate such portable/shareable service files.
However, it does not yet support pods but we are working on it, which is
tracked in the upstream issue [1].
For the case of the pod, what PID does systemd track? Is it the
pause
container? If so, how does that happen? `podman pod create` doesn't seem to
accept --conmon-pidfile args like `podman run` does.
I also tried using the output of `podman generate systemd` but that seems
tied to a specific pod instance. Ideally I'd find something more generic
like the pattern I extracted from the blog post above.
I suggest following the upstream issue [1] for updates. Supporting --new
for pods is definitely on our todo-list.
Thanks for reaching out.
Kind regards,
Valentin
[1] https://github.com/containers/libpod/issues/4875