The --ignore flag lets Podman ignore errors when a specified container
does not exist (anymore). That's a nice addition to generic services
generated via the --new flag. Those services create new containers and
can hence allows user to manually remove a container; may it only be by
accident.
The important part of using the --ignore flag is that Podman will exit 0
which plays nicer with most restart policies; a non-zero exit may yield
systemd to restart the entire service which is arguably wrong if the
user manually deletes the container.
If desired, users can still alter the generated files.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
Include the unit tests (i.e., _test.go files) for linting to make the
tests more robust and enforce the linters' coding styles etc.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
Add a --new flag to podman-generate-systemd to create a new container
via podman-run instead of starting an existing container.
Creating a new container presents the challenge to find a reverse
mapping from a container to the CLI flags it can be created with. We
are doing this via `(Container).Config.CreateCommand` field, which
includes a copy of the process' command from procFS at creating time.
This field may not be useful when the container was not created via the
Podman CLI (e.g., via a Python script). Hence, we do not guarantee the
correctness of the generated files.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
Support generating systemd unit files for a pod. Podman generates one
unit file for the pod including the PID file for the infra container's
conmon process and one unit file for each container (excluding the infra
container).
Note that this change implies refactorings in the `pkg/systemdgen` API.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
It is not correct to rely on specific location of the podman binary.
In most cases it is /usr/bin/podman, but sometimes is not (e.g. in
system tests). Use /proc/self/exe instead of hardcoded path.
Signed-off-by: Danila Kiver <danila.kiver@mail.ru>
By default, podman points PIDFile in generated unit file to non-existent
location. As a result, the unit file, generated by podman, is broken:
an attempt to start this unit without prior modification results in a crash,
because systemd can not find the pidfile of service's main process.
Fix the value of "PIDFile" and add a system test for this case.
Signed-off-by: Danila Kiver <danila.kiver@mail.ru>
the podman generate systemd command will generate a systemd unit file
based on the attributes of an existing container and user inputs. the
command outputs the unit file to stdout for the user to copy or
redirect. it is enabled for the remote client as well.
users can set a restart policy as well as define a stop timeout
override for the container.
Signed-off-by: baude <bbaude@redhat.com>
Giuseppe Scrivano
Valentin Rothberg
Danila Kiver
baude