Effectively, this is an ability to take an image already pulled
to the system, and automatically mount it into one or more
containers defined in Kubernetes YAML accepted by `podman play`.
Requirements:
- The image must already exist in storage.
- The image must have at least 1 volume directive.
- The path given by the volume directive will be mounted from the
image into the container. For example, an image with a volume
at `/test/test_dir` will have `/test/test_dir` in the image
mounted to `/test/test_dir` in the container.
- Multiple images can be specified. If multiple images have a
volume at a specific path, the last image specified trumps.
- The images are always mounted read-only.
- Images to mount are defined in the annotation
"io.podman.annotations.kube.image.automount/$ctrname" as a
semicolon-separated list. They are mounted into a single
container in the pod, not the whole pod.
As we're using a nonstandard annotation, this is Podman only, any
Kubernetes install will just ignore this.
Underneath, this compiles down to an image volume
(`podman run --mount type=image,...`) with subpaths to specify
what bits we want to mount into the container.
Signed-off-by: Matt Heon <mheon@redhat.com>
Image volumes (the `--mount type=image,...` kind, not the
`podman volume create --driver image ...` kind - it's strange
that we have two) are needed for our automount scheme, but the
request is that we mount only specific subpaths from the image
into the container. To do that, we need image volume subpath
support. Not that difficult code-wise, mostly just plumbing.
Also, add support to the CLI; not strictly necessary, but it
doesn't hurt anything and will make testing easier.
Signed-off-by: Matt Heon <mheon@redhat.com>
This is something Docker does, and we did not do until now. Most
difficult/annoying part was the REST API, where I did not really
want to modify the struct being sent, so I made the new restart
policy parameters query parameters instead.
Testing was also a bit annoying, because testing restart policy
always is.
Signed-off-by: Matt Heon <mheon@redhat.com>
This includes migrating from cdi.GetRegistry() to cdi.Configure() and
cdi.GetDefaultCache() as applicable.
Signed-off-by: Evan Lezar <elezar@nvidia.com>
Healthchecks, defined in a .yaml file as livenessProbe did not had any
effect. They were executing as intended, containers were marked as
unhealthy, yet no action was taken. This was never the intended
behaviour, as observed by the comment:
> if restart policy is in place, ensure the health check enforces it
A minimal example is tracked in containers/podman#20903 [1] with the
following YAML:
```yaml
apiVersion: v1
kind: Pod
metadata:
name: ubi-httpd-24
spec:
restartPolicy: Always
containers:
- name: ubi8-httpd
image: registry.access.redhat.com/rhscl/httpd-24-rhel7:2.4-217
livenessProbe:
httpGet:
path: "/"
port: 8081
```
By passing down the restart policy (and using constants instead of
actually wrong hard-coded ones), Podman actually restarts the container
now.
[1]: https://github.com/containers/podman/issues/20903Closes#20903.
Signed-off-by: Jasmin Oster <nachtjasmin@posteo.de>
The reserved annotation io.podman.annotations.volumes-from is made public to let user define volumes-from to have one container mount volumes of other containers.
The annotation format is: io.podman.annotations.volumes-from/tgtCtr: "srcCtr1:mntOpts1;srcCtr2:mntOpts;..."
Fixes: containers#16819
Signed-off-by: Vikas Goel <vikas.goel@gmail.com>
Moving from Go module v4 to v5 prepares us for public releases.
Move done using gomove [1] as with the v3 and v4 moves.
[1] https://github.com/KSubedi/gomove
Signed-off-by: Matt Heon <mheon@redhat.com>
The pasta network mode has been added in podman v4.4 and this causes a
conflict with named networks that could also be called "pasta". To not
break anything we had special logic to prefer the named network over the
network mode. Now with 5.0 we can break this and remove this awkward
special handling from the code.
Containers created with 4.X that use a named network pasta will also
continue to work fine, this chnage will only effect the creation of new
containers with a named network pasta and instead always used the
network mode pasta. We now also block the creation of networks with the
name "pasta".
Signed-off-by: Paul Holzinger <pholzing@redhat.com>
The current field separator comma of the inspect annotation conflicts with the mount options of --volumes-from as the mount options itself can be comma separated.
Signed-off-by: Vikas Goel <vikas.goel@gmail.com>
SpecGen is our primary container creation abstraction, and is
used to connect our CLI to the Libpod container creation backend.
Because container creation has a million options (I exaggerate
only slightly), the struct is composed of several other structs,
many of which are quite large.
The core problem is that SpecGen is also an API type - it's used
in remote Podman. There, we have a client and a server, and we
want to respect the server's containers.conf. But how do we tell
what parts of SpecGen were set by the client explicitly, and what
parts were not? If we're not using nullable values, an explicit
empty string and a value never being set are identical - and we
can't tell if it's safe to grab a default from the server's
containers.conf.
Fortunately, we only really need to do this for booleans. An
empty string is sufficient to tell us that a string was unset
(even if the user explicitly gave us an empty string for an
option, filling in a default from the config file is acceptable).
This makes things a lot simpler. My initial attempt at this
changed everything, including strings, and it was far larger and
more painful.
Also, begin the first steps of removing all uses of
containers.conf defaults from client-side. Two are gone entirely,
the rest are marked as remove-when-possible.
[NO NEW TESTS NEEDED] This is just a refactor.
Signed-off-by: Matt Heon <mheon@redhat.com>
Some OCI runtimes (cf. [1]) may tolerate container images that don't
specify an entrypoint even if no entrypoint is given on the command
line. In those cases, it's annoying for the user to have to pass a ""
argument to podman.
If no entrypoint is given, make the behavior the same as if an empty ""
entrypoint was given.
[1] https://github.com/containers/crun-vm
Signed-off-by: Alberto Faria <afaria@redhat.com>
This avoids nil pointer exceptions in the subsequent code that tries to access the runtimeSpec returned from SpecGenToOCI.
[NO NEW TESTS NEEDED]
Signed-off-by: Sebastian Mosbach <sm453@cam.ac.uk>
Cut is a cleaner & more performant api relative to SplitN(_, _, 2) added in go 1.18
Previously applied this refactoring to buildah:
https://github.com/containers/buildah/pull/5239
Signed-off-by: Philip Dubé <philip@peerdb.io>
* Add BaseHostsFile to container configuration
* Do not copy /etc/hosts file from host when creating a container using Docker API
Signed-off-by: Gavin Lam <gavin.oss@tutamail.com>
Use the new rootlessnetns logic from c/common, drop the podman code
here and make use of the new much simpler API.
ref: https://github.com/containers/common/pull/1761
[NO NEW TESTS NEEDED]
Signed-off-by: Paul Holzinger <pholzing@redhat.com>
add a new option --preserve-fd that allows to specify a list of FDs to
pass down to the container.
It is similar to --preserve-fds but it allows to specify a list of FDs
instead of the maximum FD number to preserve.
--preserve-fd and --preserve-fds are mutually exclusive.
It requires crun since runc would complain if any fd below
--preserve-fds is not preserved.
Closes: https://github.com/containers/podman/issues/20844
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
In FreeBSD-14.0, it is possible to configure a jail's network settings
from outside the jail using ifconfig and route's new '-j' option. This
removes the need for a separate jail to own the container's vnet.
[NO NEW TESTS NEEDED]
Signed-off-by: Doug Rabson <dfr@rabson.org>
When InitialDelaySeconds in the kube yaml is set for a helthcheck,
don't update the healthcheck status till those initial delay seconds are over.
We were waiting to update for a failing healtcheck, but when the healthcheck
was successful during the initial delay time, the status was being updated as healthy
immediately.
This is misleading to the users wondering why their healthcheck takes
much longer to fail for a failing case while it is quick to succeed for
a healthy case. It also doesn't match what the k8s InitialDelaySeconds
does. This change is only for kube play, podman healthcheck run is
unaffected.
Signed-off-by: Urvashi Mohnani <umohnani@redhat.com>
1. Set the marker to the current virtual machine type instead of fixed qemu.
2. Update containers/common
[NO NEW TESTS NEEDED]
Signed-off-by: Black-Hole1 <bh@bugs.cc>
This updates the container-device-interface dependency to v0.6.2 and renames the import to
tags.cncf.io/container-device-interface to make use of the new vanity URL.
[NO NEW TESTS NEEDED]
Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Signed-off-by: Evan Lezar <elezar@nvidia.com>
Docker allows the passing of -1 to indicate the maximum limit
allowed for the current process.
Fixes: https://github.com/containers/podman/issues/19319
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
All `[]string`s in containers.conf have now been migrated to attributed
string slices which require some adjustments in Buildah and Podman.
[NO NEW TESTS NEEDED]
Signed-off-by: Valentin Rothberg <vrothberg@redhat.com>
This is not used at all but causes a libimage import for non linux
builds which causes bloat for them, with the new !remote tag this is no
longer possible and we have to remove it to fix the build.
Signed-off-by: Paul Holzinger <pholzing@redhat.com>
When the hostNetwork option is set to true in the k8s yaml,
set the pod's hostname to the name of the machine/node as is
done in k8s. Also set the utsns to host.
Signed-off-by: Urvashi Mohnani <umohnani@redhat.com>
Use the new FindInitBinary() function to lookup the init binary, this
allows the use of helper_binaries_dir in contianers.conf[1]
[NO NEW TESTS NEEDED]
[1] https://github.com/containers/common/issues/1110
Signed-off-by: Paul Holzinger <pholzing@redhat.com>
Add support for DefaultMode for configMaps and secrets.
This allows users to set the file permissions for files
created with their volume mounts. Adheres to k8s defaults.
Signed-off-by: Urvashi Mohnani <umohnani@redhat.com>
Add --rdt-class=COS to the create and run command to enable the
assignment of a container to a Class of Service (COS). The COS
represents a part of the cache based on the Cache Allocation Technology
(CAT) feature that is part of Intel's Resource Director Technology
(Intel RDT) feature set. By assigning a container to a COS, all PID's of
the container have only access to the cache space defined for this COS.
The COS has to be pre-configured based on the resctrl kernel driver.
cat_l2 and cat_l3 flags in /proc/cpuinfo represent CAT support for cache
level 2 and 3 respectively.
Signed-off-by: Wolfgang Pross <wolfgang.pross@intel.com>
Container ports defined with containerPort were exposed by default
even though kubernetes interprets them as mostly informative.
Closes#17028
Signed-off-by: Peter Werner <wpw.peter@gmail.com>
commit cf364703fc changed the way
/sys/fs/cgroup is mounted when there is not a netns and it now honors
the ro flag. The mount was created using a bind mount that is a
problem when using a cgroup namespace, fix that by mounting a fresh
cgroup file system.
Closes: https://github.com/containers/podman/issues/20073
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
Matt Heon
Paul Holzinger
openshift-merge-bot[bot]
Giuseppe Scrivano
Evan Lezar
Jasmin Oster
Vikas Goel
Andre Marianiello
Alberto Faria
Sebastian Mosbach
Philip Dubé
Oleksandr Redko
Ygal Blum
Gavin Lam
Doug Rabson
Urvashi Mohnani
Black-Hole1
Daniel J Walsh
Brent Baude
renovate[bot]
Valentin Rothberg
OpenShift Merge Robot
Wolfgang Pross
Peter Werner