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path: root/libpod/pod.go
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* pod: add exit policiesValentin Rothberg2022-05-02
| | | | | | | | | | | | | | | | | | | | | | | | Add the notion of an "exit policy" to a pod. This policy controls the behaviour when the last container of pod exits. Initially, there are two policies: - "continue" : the pod continues running. This is the default policy when creating a pod. - "stop" : stop the pod when the last container exits. This is the default behaviour for `play kube`. In order to implement the deferred stop of a pod, add a worker queue to the libpod runtime. The queue will pick up work items and in this case helps resolve dead locks that would otherwise occur if we attempted to stop a pod during container cleanup. Note that the default restart policy of `play kube` is "Always". Hence, in order to really solve #13464, the YAML files must set a custom restart policy; the tests use "OnFailure". Fixes: #13464 Signed-off-by: Valentin Rothberg <vrothberg@redhat.com>
* Merge pull request #14045 from cdoern/cgroupPathOpenShift Merge Robot2022-04-28
|\ | | | | remove unused codepath for creating/running ctr in a pod
| * remove unused codepath for creating/running ctr in a podcdoern2022-04-28
| | | | | | | | | | | | | | | | | | | | `pod.CgroupPath()` currently includes a codepath that is never accessed, which is supposed to start the infra ctr and obtain the cgroup path from there that is never necessary/safe because p.state.CgroupPath is never empty [NO NEW TESTS NEEDED] Signed-off-by: cdoern <cbdoer23@g.holycross.edu>
* | Report properly whether pod shares host networkDaniel J Walsh2022-04-28
|/ | | | | | Fixes: https://github.com/containers/podman/issues/14028 Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* podman stats: calc CPU percentage correctlyPaul Holzinger2022-03-22
| | | | | | | | | | | | | | | | | | | | | When you run podman stats, the first interval always shows the wrong cpu usage. To calculate cpu percentage we get the cpu time from the cgroup and compare this against the system time between two stats. Since the first time we do not have a previous stats an empty struct is used instead. Thus we do not use the actual running time of the container but the current unix timestamp (time since Jan 1 1970). To fix this we make sure that the previous stats time is set to the container start time, when it is empty. [NO NEW TESTS NEEDED] No idea how I could create a test which would have a predictable cpu usage. See the linked bugzilla for a reproducer. Fixes https://bugzilla.redhat.com/show_bug.cgi?id=2066145 Signed-off-by: Paul Holzinger <pholzing@redhat.com>
* bump go module to version 4Valentin Rothberg2022-01-18
| | | | | | | | | | | | | Automated for .go files via gomove [1]: `gomove github.com/containers/podman/v3 github.com/containers/podman/v4` Remaining files via vgrep [2]: `vgrep github.com/containers/podman/v3` [1] https://github.com/KSubedi/gomove [2] https://github.com/vrothberg/vgrep Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* Standardize on capatalized CgroupsDaniel J Walsh2022-01-14
| | | | Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* codespell codeDaniel J Walsh2021-10-12
| | | | Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Pod Volumes From Supportcdoern2021-10-01
| | | | | | | added support for a volumes from container. this flag just required movement of the volumes-from flag declaration out of the !IsInfra block, and minor modificaions to container_create.go Signed-off-by: cdoern <cdoern@redhat.com>
* libpod: do not call (*container).Config()Valentin Rothberg2021-09-28
| | | | | | | | | | | | Access the container's config field directly inside of libpod instead of calling `Config()` which in turn creates expensive JSON deep copies. Accessing the field directly drops memory consumption of a simple `podman run --rm busybox true` from 1245kB to 410kB. [NO TESTS NEEDED] Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* InfraContainer Reworkcdoern2021-08-26
| | | | | | | | | | InfraContainer should go through the same creation process as regular containers. This change was from the cmd level down, involving new container CLI opts and specgen creating functions. What now happens is that both container and pod cli options are populated in cmd and used to create a podSpecgen and a containerSpecgen. The process then goes as follows FillOutSpecGen (infra) -> MapSpec (podOpts -> infraOpts) -> PodCreate -> MakePod -> createPodOptions -> NewPod -> CompleteSpec (infra) -> MakeContainer -> NewContainer -> newContainer -> AddInfra (to pod state) Signed-off-by: cdoern <cdoern@redhat.com>
* Add support for pod inside of user namespace.Daniel J Walsh2021-08-09
| | | | | | | | | | | | | Add the --userns flag to podman pod create and keep track of the userns setting that pod was created with so that all containers created within the pod will inherit that userns setting. Specifically we need to be able to launch a pod with --userns=keep-id Signed-off-by: Daniel J Walsh <dwalsh@redhat.com> Signed-off-by: Urvashi Mohnani <umohnani@redhat.com>
* implement init containers in podmanBrent Baude2021-08-04
| | | | | | | | | | | | | | this is the first pass at implementing init containers for podman pods. init containersare made popular by k8s as a way to run setup for pods before the pods standard containers run. unlike k8s, we support two styles of init containers: always and oneshot. always means the container stays in the pod and starts whenever a pod is started. this does not apply to pods restarting. oneshot means the container runs onetime when the pod starts and then is removed. Signed-off-by: Brent Baude <bbaude@redhat.com>
* --infra-name command line argumentJosé Guilherme Vanz2021-07-15
| | | | | | | | | Adds the new --infra-name command line argument allowing users to define the name of the infra container Issue #10794 Signed-off-by: José Guilherme Vanz <jvanz@jvanz.com>
* podman pod create --pid flagcdoern2021-07-15
| | | | | | | | added support for --pid flag. User can specify ns:file, pod, private, or host. container returns an error since you cannot point the ns of the pods infra container to a container outside of the pod. Signed-off-by: cdoern <cdoern@redhat.com>
* Podman Pod Create --cpus and --cpuset-cpus flagscdoern2021-06-23
| | | | | | | | | | | | Added logic and handling for two new Podman pod create Flags. --cpus specifies the total number of cores on which the pod can execute, this is a combination of the period and quota for the CPU. --cpuset-cpus is a string value which determines of these available cores, how many we will truly execute on. Signed-off-by: cdoern <cbdoer23@g.holycross.edu>
* bump go module to v3Valentin Rothberg2021-02-22
| | | | | | | | | We missed bumping the go module, so let's do it now :) * Automated go code with github.com/sirkon/go-imports-rename * Manually via `vgrep podman/v2` the rest Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* Allow pods to use --net=noneMatthew Heon2021-02-02
| | | | | | | | | | | We need an extra field in the pod infra container config. We may want to reevaluate that struct at some point, as storing network modes as bools will rapidly become unsustainable, but that's a discussion for another time. Otherwise, straightforward plumbing. Fixes #9165 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Add SELinux support for podsDaniel J Walsh2020-10-02
| | | | | | | | | | All containers within a Pod need to run with the same SELinux label, unless overwritten by the user. Also added a bunch of SELinux tests to make sure selinux labels are correct on namespaces. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Add support for slirp network for podsAshley Cui2020-09-25
| | | | | | flag --network=slirp4netns[options] for root and rootless pods Signed-off-by: Ashley Cui <acui@redhat.com>
* Fix podman pod create --infra-command and --infra-imageDaniel J Walsh2020-09-16
| | | | | | | | Currently infr-command and --infra-image commands are ignored from the user. This PR instruments them and adds tests for each combination. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Ensure pod infra containers have an exit commandMatthew Heon2020-08-13
| | | | | | | | | | | | | | | | | | | | | | Most Libpod containers are made via `pkg/specgen/generate` which includes code to generate an appropriate exit command which will handle unmounting the container's storage, cleaning up the container's network, etc. There is one notable exception: pod infra containers, which are made entirely within Libpod and do not touch pkg/specgen. As such, no cleanup process, network never cleaned up, bad things can happen. There is good news, though - it's not that difficult to add this, and it's done in this PR. Generally speaking, we don't allow passing options directly to the infra container at create time, but we do (optionally) proxy a pre-approved set of options into it when we create it. Add ExitCommand to these options, and set it at time of pod creation using the same code we use to generate exit commands for normal containers. Fixes #7103 Signed-off-by: Matthew Heon <mheon@redhat.com>
* Switch all references to github.com/containers/libpod -> podmanDaniel J Walsh2020-07-28
| | | | Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* move go module to v2Valentin Rothberg2020-07-06
| | | | | | | | | | | | | | | 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>
* generate systemd: create pod templateValentin Rothberg2020-06-11
| | | | | | | | | | Create a new template for generating a pod unit file. Eventually, this allows for treating and extending pod and container generation seprately. The `--new` flag now also works on pods. Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* generate systemd: refactorValentin Rothberg2020-06-11
| | | | | | | | | | | | Refactor the systemd-unit generation code and move all the logic into `pkg/systemd/generate`. The code was already hard to maintain but I found it impossible to wire the `--new` logic for pods in all the chaos. The code refactoring in this commit will make maintaining the code easier and should make it easier to extend as well. Further changes and refactorings may still be needed but they will easier. Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* add (*Pod).CreateCommand()Valentin Rothberg2020-06-11
| | | | | | Add a method to Pod to easily access its .config.CreateCommand. Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* pod create: add `--infra-conmon-pidfile`Valentin Rothberg2020-06-11
| | | | | | | | | | | Add an `--infra-conmon-pidfile` flag to `podman-pod-create` to write the infra container's conmon process ID to a specified path. Several container sub-commands already support `--conmon-pidfile` which is especially helpful to allow for systemd to access and track the conmon processes. This allows for easily tracking the conmon process of a pod's infra container. Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* pod config: add a `CreateCommand` fieldValentin Rothberg2020-06-11
| | | | | | | | | | | | | | Add a `CreateCommand` field to the pod config which includes the entire `os.Args` at pod-creation. Similar to the already existing field in a container config, we need this information to properly generate generic systemd unit files for pods. It's a prerequisite to support the `--new` flag for pods. Also add the `CreateCommand` to the pod-inspect data, which can come in handy for debugging, general inspection and certainly for the tests that are added along with the other changes. Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* Ensure that containers in pods properly set hostnameMatthew Heon2020-06-04
| | | | | | | | | | | | | | | | | | When we moved to the new Namespace types in Specgen, we made a distinction between taking a namespace from a pod, and taking it from another container. Due to this new distinction, some code that previously worked for both `--pod=$ID` and `--uts=container:$ID` has accidentally become conditional on only the latter case. This happened for Hostname - we weren't properly setting it in cases where the container joined a pod. Fortunately, this is an easy fix once we know to check the condition. Also, ensure that `podman pod inspect` actually prints hostname. Fixes #6494 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Fix bug where pods would unintentionally share cgroupnsMatthew Heon2020-05-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* v2 podman statsbaude2020-05-05
| | | | Signed-off-by: baude <bbaude@redhat.com>
* Enable pod inspect integration testSujil022020-04-26
| | | | | | | | Enable pod inspect integration test Get rid of libpod pod inspect references Remove libpod PodInspect struct. Signed-off-by: Sujil02 <sushah@redhat.com>
* Update pod bindings and Add test to validate prune pod apiv2 binding.Sujil022020-02-28
| | | | | | | | Modify the pod inspect bindings to hold current pod status. Includes test to validate on pod status and added test to check no or few pods are pruned,if the pods are in exited state. Signed-off-by: Sujil02 <sushah@redhat.com>
* Add ability for pods to use the host networkMatthew Heon2020-02-17
| | | | Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Add backend code for pod network optionsMatthew Heon2020-02-04
| | | | | | | | | | This adds network-related options to the pod in the database. We are going to add the CLI frontend in further patches. In short, this should greatly improve the ability of pods to configure networking, once the CLI parsing is added. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* 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>
* 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>
* Purge all use of easyjson and ffjson in libpodMatthew Heon2019-06-13
| | | | | | | | | We're no longer using either of these JSON libraries, dropped them in favor of jsoniter. We can't completely remove ffjson as c/storage uses it and can't easily migrate, but we can make sure that libpod itself isn't doing anything with them anymore. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Convert pods to SHM locksMatthew Heon2019-01-04
| | | | Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
* Allow users to expose ports from the pod to the hostbaude2018-11-20
| | | | | | | | | | we need to allow users to expose ports to the host for the purposes of networking, like a webserver. the port exposure must be done at the time the pod is created. strictly speaking, the port exposure occurs on the infra container. Signed-off-by: baude <bbaude@redhat.com>
* Swap from FFJSON to easyjsonMatthew Heon2018-08-24
| | | | | | | | | | | | | | | FFJSON has serialization differences versus stock Go - namely, it does not respect the MarshalText() and UnmarshalText() methods, particularly on []byte, which causes incompatability with pre-FFJSON containers which contained DNS servers. EasyJSON does not have these issues, and might even be slightly faster. Signed-off-by: Matthew Heon <matthew.heon@gmail.com> Closes: #1322 Approved by: mheon
* 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
* Support pause containers in varlinkhaircommander2018-08-23
| | | | | | | 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
* Changed GetContainerStats to return ErrCtrStateInvalidhaircommander2018-08-23
| | | | | | | | | | | | | | This results in some functionality changes: If a ErrCtrStateInvalid is returned to GetPodStats, the container is ommitted from the stats. As such, if an empty slice of Container stats are returned to GetPodStats in varlink, an error will occur. GetContainerStats will return the ErrCtrStateInvalid as well. Finally, if ErrCtrStateInvalid is returned to the podman stats call, the container will be ommitted from the stats. Signed-off-by: haircommander <pehunt@redhat.com> Closes: #1319 Approved by: baude
* podman pod statsbaude2018-08-17
| | | | | | | | | add the ability to monitor container statistics in a pod. Signed-off-by: baude <bbaude@redhat.com> Closes: #1265 Approved by: rhatdan
* Ensure pod inspect is locked and validity-checkedMatthew Heon2018-08-11
| | | | | | | | | | Also, don't return the internal podState struct - instead return a public inspect struct. Signed-off-by: Matthew Heon <matthew.heon@gmail.com> Closes: #1258 Approved by: rhatdan
* Split pod.go into 3 filesMatthew Heon2018-08-10
| | | | | | | | | | | This removes anything but structs and simple accessors from pod.go itself, which is a target file for FFJSON generation. This should reduce the amount of times FFJSON needs to run. Signed-off-by: Matthew Heon <matthew.heon@gmail.com> Closes: #1247 Approved by: rhatdan
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