when a user specifies --pod to podman create|run, we should create that pod
automatically. the port bindings from the container are then inherited by
the infra container. this signicantly improves the workflow of running
containers inside pods with podman. the user is still encouraged to use
podman pod create to have more granular control of the pod create options.
Signed-off-by: baude <bbaude@redhat.com>
Part of the motivation for 800eb863 (Hooks supports two directories,
process default and override, 2018-09-17, #1487) was [1]:
> We only use this for override. The reason this was caught is people
> are trying to get hooks to work with CoreOS. You are not allowed to
> write to /usr/share... on CoreOS, so they wanted podman to also look
> at /etc, where users and third parties can write.
But we'd also been disabling hooks completely for rootless users. And
even for root users, the override logic was tricky when folks actually
had content in both directories. For example, if you wanted to
disable a hook from the default directory, you'd have to add a no-op
hook to the override directory.
Also, the previous implementation failed to handle the case where
there hooks defined in the override directory but the default
directory did not exist:
$ podman version
Version: 0.11.2-dev
Go Version: go1.10.3
Git Commit: "6df7409cb5a41c710164c42ed35e33b28f3f7214"
Built: Sun Dec 2 21:30:06 2018
OS/Arch: linux/amd64
$ ls -l /etc/containers/oci/hooks.d/test.json
-rw-r--r--. 1 root root 184 Dec 2 16:27 /etc/containers/oci/hooks.d/test.json
$ podman --log-level=debug run --rm docker.io/library/alpine echo 'successful container' 2>&1 | grep -i hook
time="2018-12-02T21:31:19-08:00" level=debug msg="reading hooks from /usr/share/containers/oci/hooks.d"
time="2018-12-02T21:31:19-08:00" level=warning msg="failed to load hooks: {}%!(EXTRA *os.PathError=open /usr/share/containers/oci/hooks.d: no such file or directory)"
With this commit:
$ podman --log-level=debug run --rm docker.io/library/alpine echo 'successful container' 2>&1 | grep -i hook
time="2018-12-02T21:33:07-08:00" level=debug msg="reading hooks from /usr/share/containers/oci/hooks.d"
time="2018-12-02T21:33:07-08:00" level=debug msg="reading hooks from /etc/containers/oci/hooks.d"
time="2018-12-02T21:33:07-08:00" level=debug msg="added hook /etc/containers/oci/hooks.d/test.json"
time="2018-12-02T21:33:07-08:00" level=debug msg="hook test.json matched; adding to stages [prestart]"
time="2018-12-02T21:33:07-08:00" level=warning msg="implicit hook directories are deprecated; set --hooks-dir="/etc/containers/oci/hooks.d" explicitly to continue to load hooks from this directory"
time="2018-12-02T21:33:07-08:00" level=error msg="container create failed: container_linux.go:336: starting container process caused "process_linux.go:399: container init caused \"process_linux.go:382: running prestart hook 0 caused \\\"error running hook: exit status 1, stdout: , stderr: oh, noes!\\\\n\\\"\""
(I'd setup the hook to error out). You can see that it's silenly
ignoring the ENOENT for /usr/share/containers/oci/hooks.d and
continuing on to load hooks from /etc/containers/oci/hooks.d.
When it loads the hook, it also logs a warning-level message
suggesting that callers explicitly configure their hook directories.
That will help consumers migrate, so we can drop the implicit hook
directories in some future release. When folks *do* explicitly
configure hook directories (via the newly-public --hooks-dir and
hooks_dir options), we error out if they're missing:
$ podman --hooks-dir /does/not/exist run --rm docker.io/library/alpine echo 'successful container'
error setting up OCI Hooks: open /does/not/exist: no such file or directory
I've dropped the trailing "path" from the old, hidden --hooks-dir-path
and hooks_dir_path because I think "dir(ectory)" is already enough
context for "we expect a path argument". I consider this name change
non-breaking because the old forms were undocumented.
Coming back to rootless users, I've enabled hooks now. I expect they
were previously disabled because users had no way to avoid
/usr/share/containers/oci/hooks.d which might contain hooks that
required root permissions. But now rootless users will have to
explicitly configure hook directories, and since their default config
is from ~/.config/containers/libpod.conf, it's a misconfiguration if
it contains hooks_dir entries which point at directories with hooks
that require root access. We error out so they can fix their
libpod.conf.
[1]: https://github.com/containers/libpod/pull/1487#discussion_r218149355
Signed-off-by: W. Trevor King <wking@tremily.us>
like containers and images, users would benefit from being able to check
if a pod exists in local storage. if the pod exists, the return code is 0.
if the pod does not exists, the return code is 1. Any other return code
indicates a real errors, such as permissions or runtime.
Signed-off-by: baude <bbaude@redhat.com>
We now default to setting storage options to "nodev", when running
privileged containers, we need to turn this off so the processes can
manipulate the image.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
Add an exists subcommand to podman container and podman image that allows
users to verify the existence of a container or image by ID or name. The return
code can be 0 (success), 1 (failed to find), or 125 (failed to work with runtime).
Issue #1845
Signed-off-by: baude <bbaude@redhat.com>
This adds the '--leave-running, -R' to the container-checkpoint man
page. As the information for '--all, -a' and '--latest, -l' was also
still missing it is included in this commit.
Signed-off-by: Adrian Reber <areber@redhat.com>
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>
For the shell examples related to building and installing podman, remove the
shell prompt indicator character '$'.
This makes copying and pasting lines much easier.
Retain the prompt indicator for the post-install shell examples, since they
(often) mix shell commands and shell command output, so it serves a useful
purpose to distinguish them.
Signed-off-by: Jonathan Dowland <jdowland@redhat.com>
Need to return an error pointing user in right direction if rootless podman
fails, because of no /etc/subuid or /etc/subgid files.
Also fix up man pages to better describe rootless podman.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
We now can remove a paused container by sending it a kill signal while it
is paused. We then unpause the container and it is immediately killed.
Also, reworked how the parallelWorker results are handled to provide a
more consistent approach to how each subcommand implements it. It also
fixes a bug where if one container errors, the error message is duplicated
when printed out.
Signed-off-by: baude <bbaude@redhat.com>
If fuse-overlayfs is present, rootless containers default to use it.
This can still be overriden either via the command line with
--storage-driver or in the ~/.config/containers/storage.conf
configuration file.
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
Operations like kill, pause, and unpause -- which can operation on one or
more containers -- can greatly benefit from parallizing its main job (eq kill).
In the case of pauseand unpause, an --all option as was added. pause --all will
pause all **running** containers. And unpause --all will unpause all **paused**
containers.
Signed-off-by: baude <bbaude@redhat.com>
When attempting to restart many containers, we can benefit from making
the restarts parallel. For convenience, two new options are added:
--all attempts to restart all containers
--run-only when used with --all will attempt to restart only running containers
Signed-off-by: baude <bbaude@redhat.com>
* Add support for pod -- create, inspect, kill, pause, ps, rm,
restart, start, stop, top, unpause
* Update pylintrc to better reflect pep8 code standards
* Fix various pylint reported errors
* Refactor code that determines screen width to no longer
require initializing curses. Improved start up time and
pushing data blob down ssh tunnel.
* Correct pod-create man page, cgroupparent not boolean
* Abort integration tests if podman service fails to start
Signed-off-by: Jhon Honce <jhonce@redhat.com>
Runc disables systemd cgroup support when build statically, so
don't tell people to do that now that we're defaulting to systemd
for cgroup management.
Also, fix some error messages to use the proper ID() call for
containers.
Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
Execute the command as described by a container image. The value of the label is processed
into a command by:
1. Ensuring the first argument of the command is podman.
2. Substituting any variables with those defined by the environment or otherwise.
If no label exists in the container image, nothing is done.
podman container runlabel LABEL IMAGE extra_args
Signed-off-by: baude <bbaude@redhat.com>
For the sake of debug and problem reporting, we would benefit from knowing
what buildah version was vendored into podman. Also, knowing the distribution
and distribution version would also be handy.
Signed-off-by: baude <bbaude@redhat.com>
