| Commit message (Collapse) | Author | Age |
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Add the notion of a "service container" to play kube. A service
container is started before the pods in play kube and is (reverse)
linked to them. The service container is stopped/removed *after*
all pods it is associated with are stopped/removed.
In other words, a service container tracks the entire life cycle
of a service started via `podman play kube`. This is required to
enable `play kube` in a systemd unit file.
The service container is only used when the `--service-container`
flag is set on the CLI. This flag has been marked as hidden as it
is not meant to be used outside the context of `play kube`. It is
further not supported on the remote client.
The wiring with systemd will be done in a later commit.
Signed-off-by: Valentin Rothberg <vrothberg@redhat.com>
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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>
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remove unused codepath for creating/running ctr in a pod
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`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>
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Fixes: https://github.com/containers/podman/issues/14028
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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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>
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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>
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Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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flag --network=slirp4netns[options] for root and rootless pods
Signed-off-by: Ashley Cui <acui@redhat.com>
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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>
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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>
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Signed-off-by: Daniel J Walsh <dwalsh@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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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>
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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>
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Add a method to Pod to easily access its .config.CreateCommand.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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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>
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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>
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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>
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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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Signed-off-by: baude <bbaude@redhat.com>
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Enable pod inspect integration test
Get rid of libpod pod inspect references
Remove libpod PodInspect struct.
Signed-off-by: Sujil02 <sushah@redhat.com>
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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>
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Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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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>
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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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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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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>
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Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
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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>
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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
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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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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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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
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add the ability to monitor container statistics in a pod.
Signed-off-by: baude <bbaude@redhat.com>
Closes: #1265
Approved by: rhatdan
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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
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