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Refactor the `RuntimeConfig` along with related code from libpod into
libpod/config. Note that this is a first step of consolidating code
into more coherent packages to make the code more maintainable and less
prone to regressions on the long runs.
Some libpod definitions were moved to `libpod/define` to resolve
circular dependencies.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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podman stats does not work in rootless environments with cgroups V1.
Fix error message and document this fact.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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* set hostname in pod yaml file
* set --hostname in pod create command
Signed-off-by: Chen Zhiwei <zhiweik@gmail.com>
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this is the third round of preparing to use the golangci-lint on our
code base.
Signed-off-by: baude <bbaude@redhat.com>
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If we don't do this, we can leak locks on every failure, and that
is very, very bad - can render Podman unusable without a 'system
renumber' being run.
Signed-off-by: Matthew Heon <mheon@redhat.com>
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Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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use the new implementation for dealing with cgroups.
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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the compilation demands of having libpod in main is a burden for the
remote client compilations. to combat this, we should move the use of
libpod structs, vars, constants, and functions into the adapter code
where it will only be compiled by the local client.
this should result in cleaner code organization and smaller binaries. it
should also help if we ever need to compile the remote client on
non-Linux operating systems natively (not cross-compiled).
Signed-off-by: baude <bbaude@redhat.com>
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Without this we leak allocated locks, which is definitely not a
good thing.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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When using CGroupfs, we see races during pod removal between
removing the CGroup and the cleanup process starting (in the
CGroup, thus preventing removal).
The simplest way to avoid this is to prevent the forking of the
cleanup process. Conveniently, we can do this via the CGroup that
we already created for Conmon - we just need to update the PID
limit to 0, which completely inhibits new forks.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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Instead of rewriting the logic, reuse the standard logic we use
for removing containers, which is much better tested.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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Ensure that, if an error occurs somewhere along the way when we
remove a pod, it's preserved until the end and returned, even as
we continue to remove the pod.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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Removing a pod must first removal all containers in the pod.
Libpod requires the state to remain consistent at all times, so
references to a deleted pod must all be cleansed first.
Pods can have many containers in them. We presently iterate
through all of them, and if an error occurs trying to clean up
and remove any single container, we abort the entire operation
(but cannot recover anything already removed - pod removal is not
an atomic operation).
Because of this, if a removal error occurs partway through, we
can end up with a pod in an inconsistent state that is no longer
usable. What's worse, if the error is in the infra container, and
it's persistent, we get zombie pods - completely unable to be
removed.
When we saw some of these same issues with containers not in
pods, we modified the removal code there to aggressively purge
containers from the database, then try to clean up afterwards.
Take the same approach here, and make cleanup errors nonfatal.
Once we've gone ahead and removed containers, we need to see
pod deletion through to the end - we'll log errors but keep
going.
Also, fix some other small things (most notably, we didn't make
events for the containers removed).
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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In lipod, we now log major events that occurr. These events
can be displayed using the `podman events` command. Each
event contains:
* Type (container, image, volume, pod...)
* Status (create, rm, stop, kill, ....)
* Timestamp in RFC3339Nano format
* Name (if applicable)
* Image (if applicable)
The format of the event and the varlink endpoint are to not
be considered stable until cockpit has done its enablement.
Signed-off-by: baude <bbaude@redhat.com>
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Before, a pod create would fail if it was set to share no namespaces, but had an infra container. While inefficient (you add a container for no reason), it shouldn't be a fatal failure. Fix this by only failing if the pod was set to share namespaces, but had no infra container, and writing a warning if vice versa.
Signed-off-by: Peter Hunt <pehunt@redhat.com>
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or attached.
Prior, a pod would have to be started immediately when created, leading to confusion about what a pod state should be immediately after creation. The problem was podman run --pod ... would error out if the infra container wasn't started (as it is a dependency). Fix this by allowing for recursive start, where each of the container's dependencies are started prior to the new container. This is only applied to the case where a new container is attached to a pod.
Also rework container_api Start, StartAndAttach, and Init functions, as there was some duplicated code, which made addressing the problem easier to fix.
Signed-off-by: Peter Hunt <pehunt@redhat.com>
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Remove runtime's lockDir as it is no longer needed after the lock
rework.
Add a trivial in-memory lock manager for unit testing
Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
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Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
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Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
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For pods using cgroupfs, we were seeing some error messages in CI
from an inability to remove the pod CGroup, which was traced down
to the conmon cgroup still being present as a child. Try to
remove these error messages and ensure successful CGroup deletion
by removing the conmon CGroup first, then the pod cgroup.
Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
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unfortunately the papr CI system cannot test ubuntu as a VM; therefore,
this PR still keeps travis. but it does include fixes that will be required
for running on modern versions of ubuntu.
Signed-off-by: baude <bbaude@redhat.com>
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To work better with Kata containers, we need to delete() from the
OCI runtime as a part of cleanup, to ensure resources aren't
retained longer than they need to be.
To enable this, we need to add a new state to containers,
ContainerStateExited. Containers transition from
ContainerStateStopped to ContainerStateExited via cleanupRuntime
which is invoked as part of cleanup(). A container in the Exited
state is identical to Stopped, except it has been removed from
the OCI runtime and thus will be handled differently when
initializing the container.
Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
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When we create a pod that also has an infra container, we should
start the infra container automatically. This allows users to add
running containers to the pod immediately.
Signed-off-by: baude <bbaude@redhat.com>
Closes: #1415
Approved by: rhatdan
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As well as small style corrections, update pod_top_test to use CreatePod, and move handling of adding a container to the pod's namespace from container_internal_linux to libpod/option.
Signed-off-by: haircommander <pehunt@redhat.com>
Closes: #1187
Approved by: mheon
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Signed-off-by: haircommander <pehunt@redhat.com>
Closes: #1187
Approved by: mheon
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A pause container is added to the pod if the user opts in. The default pause image and command can be overridden. Pause containers are ignored in ps unless the -a option is present. Pod inspect and pod ps show shared namespaces and pause container. A pause container can't be removed with podman rm, and a pod can be removed if it only has a pause container.
Signed-off-by: haircommander <pehunt@redhat.com>
Closes: #1187
Approved by: mheon
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Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
Closes: #1266
Approved by: baude
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Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
Closes: #1237
Approved by: rhatdan
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New containers and pods will default to the namespace of the
runtime, but this can be overridden by With... options if
desired.
Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
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Includes a very stripped down version of podman pod ps, just for testing
Signed-off-by: haircommander <pehunt@redhat.com>
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b96be3af (changes to allow for darwin compilation, 2018-06-20, #1015)
made RemovePod per-platform, but left out docs for the unsupported
version [1]:
libpod/runtime_pod_unsupported.go:14:1:warning: exported method
Runtime.RemovePod should have comment or be unexported (golint)
To keep the docs DRY, I've restored RemovePod and its docs to their
previous location, and named a new, internal removePod for the
per-platform implementations.
[1]: https://travis-ci.org/projectatomic/libpod/jobs/400555937#L159
Signed-off-by: W. Trevor King <wking@tremily.us>
Closes: #1034
Approved by: baude
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Signed-off-by: baude <bbaude@redhat.com>
Closes: #1015
Approved by: baude
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