Ensure we can identify what hook is running so we can tell which
are erroring.
Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
Closes: #960
Approved by: rhatdan
The containernetworking/plugins ns package does not support
unmounting and removing namespaces that were opened by another
process. Work around this by doing it ourself.
Closes: #858
Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
Closes: #949
Approved by: rhatdan
Attempt to cleanup as much of the container as possible, even if one
of the cleanup stages fails.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
Closes: #895
Approved by: mheon
Currently we are dropping the command entry from the create
line and using the image Cmd. This change will only use the
image Cmd if the user did not specify a Cmd.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
Closes: #823
Approved by: umohnani8
Instead of manually calling the individual functions that cleanup
uses to tear down a container's resources, just call the cleanup
function to make sure that cleanup only needs to happen in one
place.
Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
Closes: #790
Approved by: rhatdan
When we're given a numeric --user value, default to GID 0 if the numeric
ID doesn't correspond to a user entry in /etc/passwd that can provide us
with the user's primary group ID.
Make sure that GetAdditionalGroupsForUser() returns wrapped errors.
Also test various user:group forms.
Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>
Closes: #728
Approved by: mheon
Allow containers that no longer exist in storage to be evicted
from the state instead of erroring.
Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
Closes: #764
Approved by: rhatdan
And add an argument to WithHooksDir to set it.
If the hook dir doesn't exist, the new hooks package considers that a
fatal error. When a podman caller sets
--hooks-dir-path=/some/typoed/directory, a fatal error is more helpful
than silently not loading any hooks. However, callers who call podman
without setting --hooks-dir-path may not need hooks at all. We don't
want to pester those callers with not-exist errors. With this commit,
we:
* Assume the caller knows what they're doing if they set
--hooks-dir-path and set HooksDirNotExistFatal.
* If the caller does not explicitly set --hooks-dir-path, assume they
won't mind if the hook directory is missing and set
HooksDirNotExistFatal false.
We also considered checking for the directory's existence in the code
calling WithHooksDir or from within WithHooksDir, but checks there
would race with the underlying ioutil.ReadDir in the hooks package.
By pushing the warn/error decision down into libpod's implementation,
we avoid a racy "do we expect this to work once libpod gets to it?"
pre-check.
I've also added a check to error if WithHooksDir is called with an
empty-string argument, because we haven't defined the semantics of
that (is it clearing a previous value? Is it effectively the same as
the current directory?). I agree with Matthew that a separate
WithNoHooks, or a *string argument to WithHooks, or some such would be
a better API for clearing previous values [1]. But for now, I'm just
erroring out to fail early for callers who might otherwise be
surprised that libpod ignores empty-string HooksDir.
[1]: https://github.com/projectatomic/libpod/pull/686#issuecomment-385119370
Signed-off-by: W. Trevor King <wking@tremily.us>
Closes: #686
Approved by: mheon
This shifts the matching logic out of libpod/container_internal and
into the hook package, where we can reuse it after vendoring into
CRI-O. It also adds unit tests with almost-complete coverage. Now
libpod is even more isolated from the hook internals, which makes it
fairly straightforward to bump the hook config file to 1.0.0. I've
dubbed the old format 0.1.0, although it doesn't specify an explicit
version. Motivation for some of my changes with 1.0.0:
* Add an explicit version field. This will make any future JSON
structure migrations more straightforward by avoiding the need for
version-guessing heuristics.
* Collect the matching properties in a new When sub-structure. This
makes the root Hook structure easier to understand, because you
don't have to read over all the matching properties when wrapping
your head around Hook.
* Replace the old 'hook' and 'arguments' with a direct embedding of
the runtime-spec's hook structure. This provides access to
additional upstream properties (args[0], env, and timeout) and
avoids the complication of a CRI-O-specific analog structure.
* Add a 'when.always' property. You can usually accomplish this
effect in another way (e.g. when.commands = [".*"]), but having a
boolean explicitly for this use-case makes for easier reading and
writing.
* Replace the previous annotations array with an annotations map. The
0.1.0 approach matched only the values regardless of key, and that
seems unreliable.
* Replace 'cmds' with 'when.commands', because while there are a few
ways to abbreviate "commands", there's only one way to write it out
in full ;). This gives folks one less thing to remember when
writing hook JSON.
* Replace the old "inject if any specified condition matches" with
"inject if all specified conditions match". This allows for more
precise targeting. Users that need more generous targeting can
recover the previous behavior by creating a separate 1.0.0 hook file
for each specified 0.1.0 condition.
I've added doc-compat support for the various pluralizations of the
0.1.0 properties. Previously, the docs and code were not in
agreement. More on this particular facet in [1].
I've updated the docs to point out that the annotations being matched
are the OCI config annotations. This differs from CRI-O, where the
annotations used are the Kubernetes-supplied annotations [2,3]. For
example, io.kubernetes.cri-o.Volumes [4] is part of CRI-O's runtime
config annotations [5], but not part of the Kubernetes-supplied
annotations CRI-O uses for matching hooks.
The Monitor method supports the CRI-O use-case [6]. podman doesn't
need it directly, but CRI-O will need it when we vendor this package
there.
I've used nvidia-container-runtime-hook for the annotation examples
because Dan mentioned the Nvidia folks as the motivation behind
annotation matching. The environment variables are documented in [7].
The 0.1.0 hook config, which does not allow for environment variables,
only works because runc currently leaks the host environment into the
hooks [8]. I haven't been able to find documentation for their usual
annotation trigger or hook-install path, so I'm just guessing there.
[1]: https://github.com/kubernetes-incubator/cri-o/pull/1235
[2]: https://github.com/kubernetes-incubator/cri-o/blob/v1.10.0/server/container_create.go#L760
[3]: https://github.com/kubernetes-incubator/cri-o/blob/v1.10.0/server/container_create.go#L772
[4]: https://github.com/kubernetes-incubator/cri-o/blob/v1.10.0/pkg/annotations/annotations.go#L97-L98
[5]: https://github.com/kubernetes-incubator/cri-o/blob/v1.10.0/server/container_create.go#L830-L834
[6]: https://github.com/kubernetes-incubator/cri-o/pull/1345/
[7]: https://github.com/NVIDIA/nvidia-container-runtime/tree/v1.3.0-1#environment-variables-oci-spec
[8]: https://github.com/opencontainers/runc/pull/1738
Signed-off-by: W. Trevor King <wking@tremily.us>
Closes: #686
Approved by: mheon
so that the OCI runtime creates the network namespace from the correct
userNS.
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
Closes: #690
Approved by: mheon
first pass at adding in the container related endpoints/methods for the libpod
backend. Couple of important notes:
* endpoints that can use a console are not going to be done until we have "remote" console
* several of the container methods should probably be able to stream as opposed to a one-off return
Signed-off-by: baude <bbaude@redhat.com>
Closes: #708
Approved by: baude
We need these for commit, and they cannot be properly deduced
from just the OCI spec, so save them in the database so we can
retrieve them for commit.
Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
Closes: #700
Approved by: rhatdan
The hidden flag is used to override the path of the default mounts file
for testing purposes.
Also modified the secrets pkg to allow for this override to happen.
Signed-off-by: umohnani8 <umohnani@redhat.com>
Closes: #678
Approved by: mheon
If an integer is passed into the --user flag, i.e --user=1234
don't look up the user in /etc/passwd, just assign the integer as the uid.
Signed-off-by: umohnani8 <umohnani@redhat.com>
Closes: #652
Approved by: mheon
If the host is in FIPS mode and /etc/system-fips exists
/run/secrets/system-fips is created in the container so that
the container can run in FIPS mode as well.
Signed-off-by: umohnani8 <umohnani@redhat.com>
Made necessary changes to functions to include contex.Context wherever needed
Signed-off-by: umohnani8 <umohnani@redhat.com>
Closes: #640
Approved by: baude
--group-add
--blkio-weight-device
--device-read-bps
--device-write-bps
--device-read-iops
--device-write-iops
--group-add now supports group names as well as the gid associated with them.
All the --device flags work now with moderate changes to the code to support both
bps and iops.
Added tests for all the flags.
Signed-off-by: umohnani8 <umohnani@redhat.com>
Closes: #590
Approved by: mheon
Instead of checking during init(), which could result in major
locking issues when used with pods, make our dependency checks in
the public API instead. This avoids doing them when we start pods
(where, because of the dependency graph, we can reasonably say
all dependencies are up before we start a container).
Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
Closes: #577
Approved by: rhatdan
We have other tools using containers/storage. They can delete our
containers in c/storage without us knowing. Try and handle this
better by warning instead of erroring when delete our storage and
it is already gone.
This does not handle cases where libpod thinks the container is
mounted, but it is not. This is harder to check for, because
c/storage Mount() and Unmount() take a layer, image, or container
and that complicates our "container no longer exists" question.
Further work is needed here.
Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
Closes: #571
Approved by: rhatdan
Adds support for mounting secrets especially on RHEL where the container
can use the host subsription to run yum
Signed-off-by: umohnani8 <umohnani@redhat.com>
Closes: #544
Approved by: rhatdan
This fixes the situation where we fail to create a container when a name already exists.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
Closes: #517
Approved by: baude
Add only when it's not already present.
Add a more specific version in podman spec generation
so we get 'container=podman' not 'container=libpod'
Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
Closes: #540
Approved by: baude
