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When we create a container, we assign a cgroup parent based on
the current cgroup manager in use. This parent is only usable
with the cgroup manager the container is created with, so if the
default cgroup manager is later changed or overridden, the
container will not be able to start.
To solve this, store the cgroup manager that created the
container in container configuration, so we can guarantee a
container with a systemd cgroup parent will always be started
with systemd cgroups.
Unfortunately, this is very difficult to test in CI, due to the
fact that we hard-code cgroup manager on all invocations of
Podman in CI.
Fixes #7830
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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it allows to manually tweak the configuration for cgroup v2.
we will expose some of the options in future as single
options (e.g. the new memory knobs), but for now add the more generic
--cgroup-conf mechanism for maximum control on the cgroup
configuration.
OCI specs change: https://github.com/opencontainers/runtime-spec/pull/1040
Requires: https://github.com/containers/crun/pull/459
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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--umask sets the umask inside the container
Defaults to 0022
Co-authored-by: Daniel J Walsh <dwalsh@redhat.com>
Signed-off-by: Ashley Cui <acui@redhat.com>
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This allows us to determine if the container auto-detected that
systemd was in use, and correctly activated systemd integration.
Use this to wire up some integration tests to verify that systemd
integration is working properly.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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Add --tz flag to create, run
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--tz flag sets timezone inside container
Can be set to IANA timezone as well as `local` to match host machine
Signed-off-by: Ashley Cui <acui@redhat.com>
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With the advent of Podman 2.0.0 we crossed the magical barrier of go
modules. While we were able to continue importing all packages inside
of the project, the project could not be vendored anymore from the
outside.
Move the go module to new major version and change all imports to
`github.com/containers/libpod/v2`. The renaming of the imports
was done via `gomove` [1].
[1] https://github.com/KSubedi/gomove
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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Reformat ports of inspect network settings to compatible with docker inspect. Close #5380
Signed-off-by: Qi Wang <qiwan@redhat.com>
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This one was a massive pain to track down.
The original symptom was an error message from rootless Podman
trying to make a container in a pod. I unfortunately did not look
at the error message closely enough to realize that the namespace
in question was the cgroup namespace (the reproducer pod was
explicitly set to only share the network namespace), else this
would have been quite a bit shorter.
I spent considerable effort trying to track down differences
between the inspect output of the two containers, and when that
failed I was forced to resort to diffing the OCI specs. That
finally proved fruitful, and I was able to determine what should
have been obvious all along: the container was joining the cgroup
namespace of the infra container when it really ought not to
have.
From there, I discovered a variable collision in pod config. The
UsePodCgroup variable means "create a parent cgroup for the pod
and join containers in the pod to it". Unfortunately, it is very
similar to UsePodUTS, UsePodNet, etc, which mean "the pod shares
this namespace", so an accessor was accidentally added for it
that indicated the pod shared the cgroup namespace when it really
did not. Once I realized that, it was a quick fix - add a bool to
the pod's configuration to indicate whether the cgroup ns was
shared (distinct from UsePodCgroup) and use that for the
accessor.
Also included are fixes for `podman inspect` and
`podman pod inspect` that fix them to actually display the state
of the cgroup namespace (for container inspect) and what
namespaces are shared (for pod inspect). Either of those would
have made tracking this down considerably quicker.
Fixes #6149
Signed-off-by: Matthew Heon <mheon@redhat.com>
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add ability to inspect a container
Signed-off-by: Brent Baude <bbaude@redhat.com>
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