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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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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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One of the side-effects of the `--userns=keep-id` command is
switching the default user of the container to the UID of the
user running Podman (though this can still be overridden by the
`--user` flag). However, it did this by setting the UID and GID
in the OCI spec, and not by informing Libpod of its intention to
switch users via the `WithUser()` option. Because of this, a lot
of the code that should have triggered when the container ran
with a non-root user was not triggering. In the case of the issue
that this fixed, the code to remove capabilities from non-root
users was not triggering. Adjust the keep-id code to properly
inform Libpod of our intention to use a non-root user to fix
this.
Also, fix an annoying race around short-running exec sessions
where Podman would always print a warning that the exec session
had already stopped.
Fixes #9919
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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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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Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>
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Add network aliases for containers to DB
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This adds the database backend for network aliases. Aliases are
additional names for a container that are used with the CNI
dnsname plugin - the container will be accessible by these names
in addition to its name. Aliases are allowed to change over time
as the container connects to and disconnects from networks.
Aliases are implemented as another bucket in the database to
register all aliases, plus two buckets for each container (one to
hold connected CNI networks, a second to hold its aliases). The
aliases are only unique per-network, to the global and
per-container aliases buckets have a sub-bucket for each CNI
network that has aliases, and the aliases are stored within that
sub-bucket. Aliases are formatted as alias (key) to container ID
(value) in both cases.
Three DB functions are defined for aliases: retrieving current
aliases for a given network, setting aliases for a given network,
and removing all aliases for a given network.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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Add a new "image" mount type to `--mount`. The source of the mount is
the name or ID of an image. The destination is the path inside the
container. Image mounts further support an optional `rw,readwrite`
parameter which if set to "true" will yield the mount writable inside
the container. Note that no changes are propagated to the image mount
on the host (which in any case is read only).
Mounts are overlay mounts. To support read-only overlay mounts, vendor
a non-release version of Buildah.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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Usage:
```
$ podman network create foo
$ podman run -d --name web --hostname web --network foo nginx:alpine
$ podman run --rm --network foo alpine wget -O - http://web.dns.podman
Connecting to web.dns.podman (10.88.4.6:80)
...
<h1>Welcome to nginx!</h1>
...
```
See contrib/rootless-cni-infra for the design.
Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
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Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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Add support -v for overlay volume mounts in podman.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
Signed-off-by: Qi Wang <qiwan@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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When running under systemd there is no need to create yet another
cgroup for the container.
With conmon-delegated the current cgroup will be split in two sub
cgroups:
- supervisor
- container
The supervisor cgroup will hold conmon and the podman process, while
the container cgroup is used by the OCI runtime (using the cgroupfs
backend).
Closes: https://github.com/containers/libpod/issues/6400
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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Until now, we've been validating every part of container
configuration through the With... functions that set the options.
This if fine when we are just validating the options to an
individual function, but things get complicated once we need to
validate conflicts between different options. We don't know the
order in which things were passed, so we need the validation on
both of the potential options that can conflict, resulting in
significant code duplication. To solve this, add a validate()
function for containers, and use this to check whether everything
is in a good state.
We can probably move more into this function (there are other
parts of container creation that also do validation of a sort)
but this is a good start to simplifying our options.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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