When a container is created with a given OCI runtime, but then it
is uninstalled or removed from the configuration file, Libpod
presently reacts very poorly. The EvictContainer code can
potentially remove these containers, but we still can't see them
in `podman ps` (aside from the massive logrus.Errorf messages
they create).
Providing a minimal OCI runtime implementation for missing
runtimes allows us to behave better. We'll be able to retrieve
containers from the database, though we still pop up an error for
each missing runtime. For containers which are stopped, we can
remove them as normal.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
network statistics cannot be collected for rootless network devices with
the current implementation. for now, we return nil so that stats will
at least for users.
Fixes:#4268
Signed-off-by: baude <bbaude@redhat.com>
The json field is called `Image` while the go field is called `ImageID`,
tricking users into filtering for `Image` which ultimately results in an
error. Hence, rename the field to `Image` to align json and go.
To prevent podman users from regressing, rename `Image` to `ImageID` in
the specified filters. Add tests to prevent us from regressing. Note
that consumers of the go API that are using `ImageID` are regressing;
ultimately we consider it to be a bug fix.
Fixes: #4193
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
Also, ensure that we don't try to mount them without root - it
appears that it can somehow not error and report that mount was
successful when it clearly did not succeed, which can induce this
case.
We reuse the `--force` flag to indicate that a volume should be
removed even after unmount errors. It seems fairly natural to
expect that --force will remove a volume that is otherwise
presenting problems.
Finally, ignore EINVAL on unmount - if the mount point no longer
exists our job is done.
Fixes: #4247Fixes: #4248
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
In some cases, conmon can fail without writing logs. Change the wording
of the error message from
"error reading container (probably exited) json message"
to
"container create failed (no logs from conmon)"
to have a more helpful error message that is more consistent with other
errors at that stage of execution.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
Previously, `podman checkport restore` with exported containers,
when told to create a new container based on the exported
checkpoint, would create a new container, with a new container
ID, but not reset CGroup path - which contained the ID of the
original container.
If this was done multiple times, the result was two containers
with the same cgroup paths. Operations on these containers would
this have a chance of crossing over to affect the other one; the
most notable was `podman rm` once it was changed to use the --all
flag when stopping the container; all processes in the cgroup,
including the ones in the other container, would be stopped.
Reset cgroups on restore to ensure that the path matches the ID
of the container actually being run.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
This is a horrible hack to work around issues with Fedora 31, but
other distros might need it to, so we'll move it upstream.
I do not recommend this functionality for general use, and the
manpages and other documentation will reflect this. But for some
upgrade cases, it will be the only thing that allows for a
working system.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
For future work, we need multiple implementations of the OCI
runtime, not just a Conmon-wrapped runtime matching the runc CLI.
As part of this, do some refactoring on the interface for exec
(move to a struct, not a massive list of arguments). Also, add
'all' support to Kill and Stop (supported by runc and used a bit
internally for removing containers).
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
when runc returns an error about not being v2 complient, catch the error
and logrus an actionable message for users.
Signed-off-by: baude <bbaude@redhat.com>
This requires updating all import paths throughout, and a matching
buildah update to interoperate.
I can't figure out the reason for go.mod tracking
github.com/containers/image v3.0.2+incompatible // indirect
((go mod graph) lists it as a direct dependency of libpod, but
(go list -json -m all) lists it as an indirect dependency),
but at least looking at the vendor subdirectory, it doesn't seem
to be actually used in the built binaries.
Signed-off-by: Miloslav Trmač <mitr@redhat.com>
This ensures that containers that didn't require an evict will be
dealt with normally, and we only break out evict for containers
that refuse to be removed by normal means.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
fixes a segfault when slirp4netns is not installed and the slirp sync
pipe is not created.
Closes: https://github.com/containers/libpod/issues/4113
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
A true result from reexec.Init() isn't an error, but it indicates that
main() should exit with a success exit status.
Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>
Add ability to evict a container when it becomes unusable. This may
happen when the host setup changes after a container creation, making it
impossible for that container to be used or removed.
Evicting a container is done using the `rm --force` command.
Signed-off-by: Marco Vedovati <mvedovati@suse.com>
CNI expects that a DELETE be run before re-creating container
networks. If a reboot occurs quickly enough that containers can't
stop and clean up, that DELETE never happens, and Podman
currently wipes the old network info and thinks the state has
been entirely cleared. Unfortunately, that may not be the case on
the CNI side. Some things - like IP address reservations - may
not have been cleared.
To solve this, manually re-run CNI Delete on refresh. If the
container has already been deleted this seems harmless. If not,
it should clear lingering state.
Fixes: #3759
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
In order to run Podman with VM-based runtimes unprivileged, the
network must be set up prior to the container creation. Therefore
this commit modifies Podman to run rootless containers by:
1. create a network namespace
2. pass the netns persistent mount path to the slirp4netns
to create the tap inferface
3. pass the netns path to the OCI spec, so the runtime can
enter the netns
Closes#2897
Signed-off-by: Gabi Beyer <gabrielle.n.beyer@intel.com>
If a user upgrades to a machine that defaults to a cgroups V2 machine
and has a libpod.conf file in their homedir that defaults to OCI Runtime runc,
then we want to change it one time to crun.
runc as of this point does not work on cgroupV2 systems. This patch will
eventually be removed but is needed until runc has support.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
If the HOME environment variable is not set, make sure it is set to
the configuration found in the container /etc/passwd file.
It was previously depending on a runc behavior that always set HOME
when it is not set. The OCI runtime specifications do not require
HOME to be set so move the logic to libpod.
Closes: https://github.com/debarshiray/toolbox/issues/266
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
We've been seeing a lot of issues (ref: #4061, but there are
others) where Podman hiccups on trying to start a container,
because some temporary files have been retained and Conmon will
not overwrite them.
If we're calling start() we can safely assume that we really want
those files gone so the container starts without error, so invoke
the cleanup routine. It's relatively cheap (four file removes) so
it shouldn't hurt us that much.
Also contains a small simplification to the removeConmonFiles
logic - we don't need to stat-then-remove when ignoring ENOENT is
fine.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
There were two problems with preserve fds.
libpod didn't open the fds before passing _OCI*PIPE to conmon. This caused libpod to talk on the preserved fds, rather than the pipes, with conmon talking on the pipes. This caused a hang.
Libpod also didn't convert an int to string correctly, so it would further fail.
Fix these and add a unit test to make sure we don't regress in the future
Note: this test will not pass on crun until crun supports --preserve-fds
Signed-off-by: Peter Hunt <pehunt@redhat.com>
if slirp4netns supports sandboxing, enable it.
It automatically creates a new mount namespace where slirp4netns will
run and have limited access to the host resources.
It needs slirp4netns 0.4.1.
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
We should not be throwing errors because the operation we wanted
to perform is already done. Now, it is definitely strange that a
container is actually unmounted, but shows as mounted in the DB -
if this reoccurs in a way where we can investigate, it's worth
tearing into.
Fixes#4033
Signed-off-by: Matthew Heon <mheon@redhat.com>
OpenShift Merge Robot
Matthew Heon
baude
Valentin Rothberg
Daniel J Walsh
Nalin Dahyabhai
Qi Wang
Giuseppe Scrivano
Miloslav Trmač
Mrigank Krishan
Marco Vedovati
Gabi Beyer
Peter Hunt
Matthew Heon