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path: root/libpod/runtime_pod_linux.go
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* Turn on More lintersDaniel J Walsh2020-06-15
| | | | | | | | | - misspell - prealloc - unparam - nakedret Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Fix errors found in coverity scanDaniel J Walsh2020-05-01
| | | | Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Add support for containers.confDaniel J Walsh2020-03-27
| | | | | | | vendor in c/common config pkg for containers.conf Signed-off-by: Qi Wang qiwan@redhat.com Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Only modify conmon cgroup if we have running containersMatthew Heon2020-02-06
| | | | | | | | | | | | | If there are no running containers - for example, if the pod was just created - the cgroup in question may not exist (under certain circumstances that we're not 100% sure about). However, regardless, we don't need to set a PID limit, as nothing will be making cleanup processes (no running conmon processes), so not changing the cgroup is safe regardless. Fixes #5072 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Deprecate & remove IsCtrSpecific in favor of IsAnonMatthew Heon2020-01-29
| | | | | | | | | | | | | | | | | | | In Podman 1.6.3, we added support for anonymous volumes - fixing our old, broken support for named volumes that were created with containers. Unfortunately, this reused the database field we used for the old implementation, and toggled volume removal on for `podman run --rm` - so now, we were removing *named* volumes created with older versions of Podman. We can't modify these old volumes in the DB, so the next-safest thing to do is swap to a new field to indicate volumes should be removed. Problem: Volumes created with 1.6.3 and up until this lands, even anonymous volumes, will not be removed. However, this is safer than removing too many volumes, as we were doing before. Fixes #5009 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* make lint: enable gocriticValentin Rothberg2020-01-13
| | | | | | | `gocritic` is a powerful linter that helps in preventing certain kinds of errors as well as enforcing a coding style. Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* Remove volumes after containers in pod removeMatthew Heon2019-12-17
| | | | | | | | | | | | | | | | | | | | | | | When trying to reproduce #4704 I noticed that the named volumes from the Postgres containers in the reproducer weren't being removed by `podman pod rm -f` saying that the container they were attached to was still in use. This was rather odd, considering they were only in use by one container, and that container was in the process of being removed with the pod. After a bit of tracing, I realized that the cause is the ordering of container removal when we remove a pod. Normally, it's done in removeContainer() before volume removal (which is the last thing in that function). However, when we are removing a pod, we remove containers all at once, after removeContainer has already finished - meaning the container still exists when we try to remove its volumes, and thus the volume can't be removed. Solution: collect a list of all named volumes in use by the pod, and remove them all at once after every container in the pod is gone. This ensures that there are no dependency issues. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* add libpod/configValentin Rothberg2019-10-31
| | | | | | | | | | | | 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>
* Fix error message on podman stats on cgroups v1 rootless environmentsDaniel J Walsh2019-08-19
| | | | | | | 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>
* Allow customizing pod hostnameChen Zhiwei2019-08-18
| | | | | | | * set hostname in pod yaml file * set --hostname in pod create command Signed-off-by: Chen Zhiwei <zhiweik@gmail.com>
* golangci-lint round #3baude2019-07-21
| | | | | | | this is the third round of preparing to use the golangci-lint on our code base. Signed-off-by: baude <bbaude@redhat.com>
* Ensure locks are freed when ctr/pod creation failsMatthew Heon2019-07-02
| | | | | | | | 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>
* stats: fix cgroup path for rootless containersGiuseppe Scrivano2019-06-26
| | | | Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* libpod: use pkg/cgroups instead of containerd/cgroupsGiuseppe Scrivano2019-06-26
| | | | | | use the new implementation for dealing with cgroups. Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* remove libpod from mainbaude2019-06-25
| | | | | | | | | | | | | 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>
* When removing pods, free their locksMatthew Heon2019-05-14
| | | | | | | Without this we leak allocated locks, which is definitely not a good thing. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* When removing a pod with CGroupfs, set pids limit to 0Matthew Heon2019-05-12
| | | | | | | | | | | | | 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>
* Use standard remove functions for removing pod ctrsMatthew Heon2019-05-10
| | | | | | | 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>
* Preserve errors returned by removing podsMatthew Heon2019-05-07
| | | | | | | | 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>
* Improve robustness of pod removalMatthew Heon2019-05-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* Add event logging to libpod, even display to podmanbaude2019-03-11
| | | | | | | | | | | | | | | | | 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>
* Fix incorrect pod create failurePeter Hunt2019-03-06
| | | | | | 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>
* pod infra container is started before a container in a pod is run, started, ↵Peter Hunt2019-02-15
| | | | | | | | | | 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>
* Remove runtime lockDir and add in-memory lock managerMatthew Heon2019-01-04
| | | | | | | | | 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>
* Convert pods to SHM locksMatthew Heon2019-01-04
| | | | Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
* Convert containers to SHM lockingMatthew Heon2019-01-04
| | | | Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
* Remove conmon cgroup before pod cgroup for cgroupfsMatthew Heon2018-11-07
| | | | | | | | | | 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>
* Add ability for ubuntu to be testedbaude2018-10-03
| | | | | | | | 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>
* Add ContainerStateExited and OCI delete() in cleanup()Matthew Heon2018-10-02
| | | | | | | | | | | | | | | | 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>
* Start pod infra container when pod is createdbaude2018-09-06
| | | | | | | | | | | 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
* Fixing network ns segfaulthaircommander2018-08-23
| | | | | | | | | 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
* Change pause container to infra containerhaircommander2018-08-23
| | | | | | | Signed-off-by: haircommander <pehunt@redhat.com> Closes: #1187 Approved by: mheon
* Added option to share kernel namespaces in libpod and podmanhaircommander2018-08-23
| | | | | | | | | 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
* Create pod CGroups when using the systemd cgroup driverMatthew Heon2018-08-15
| | | | | | | Signed-off-by: Matthew Heon <matthew.heon@gmail.com> Closes: #1266 Approved by: baude
* Fix CGroupFS cgroup manager cgroup creation for podsMatthew Heon2018-08-08
| | | | | | | Signed-off-by: Matthew Heon <matthew.heon@gmail.com> Closes: #1237 Approved by: rhatdan
* Set namespace for new pods/containers based on runtimeMatthew Heon2018-07-24
| | | | | | | | 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>
* Podman pod create/rm commands with man page and tests.haircommander2018-07-13
| | | | | | Includes a very stripped down version of podman pod ps, just for testing Signed-off-by: haircommander <pehunt@redhat.com>
* libpod/runtime_pod: Make removePod per-platformW. Trevor King2018-07-06
| | | | | | | | | | | | | | | | | | | | 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
* changes to allow for darwin compilationbaude2018-06-29
Signed-off-by: baude <bbaude@redhat.com> Closes: #1015 Approved by: baude
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