It turns out an options was added to container exists so it makes sense
to have pods and container exists calls have an optional structure for
options.
Signed-off-by: baude <bbaude@redhat.com>
Basic theory: We remove the container, but *only from the DB*.
We leave it in c/storage, we leave the lock allocated, we leave
it running (if it is). Then we create an identical container with
an altered name, and add that back to the database. Theoretically
we now have a renamed container.
The advantage of this approach is that it doesn't just apply to
rename - we can use this to make *any* configuration change to a
container that does not alter its container ID.
Potential problems are numerous. This process is *THOROUGHLY*
non-atomic at present - if you `kill -9` Podman mid-rename things
will be in a bad place, for example. Also, we can't rename
containers that can't be removed normally - IE, containers with
dependencies (pod infra containers, for example).
The largest potential improvement will be to move the majority of
the work into the DB, with a `RecreateContainer()` method - that
will add atomicity, and let us remove the container without
worrying about depencies and similar issues.
Potential problems: long-running processes that edit the DB and
may have an older version of the configuration around. Most
notable example is `podman run --rm` - the removal command needed
to be manually edited to avoid this one. This begins to get at
the heart of me not wanting to do this in the first place...
This provides CLI and API implementations for frontend, but no
tunnel implementation. It will be added in a future release (just
held back for time now - we need this in 3.0 and are running low
on time).
This is honestly kind of horrifying, but I think it will work.
Signed-off-by: Matthew Heon <mheon@redhat.com>
when using the bindings to *only* make a connection, the binary was
rough 28MB. This PR reduces it down to 11. There is more work to do
but it will come in a secondary PR.
Signed-off-by: baude <bbaude@redhat.com>
This change adds code to report the reclaimed space after a prune.
Reclaimed space from volumes, images, and containers is recorded
during the prune call in a PruneReport struct. These structs are
collected into a slice during a system prune and processed afterwards
to calculate the total reclaimed space.
Closes#8658
Signed-off-by: Baron Lenardson <lenardson.baron@gmail.com>
Implement `podman-remote cp` and break out the logic from the previously
added `pkg/copy` into it's basic building blocks and move them up into
the `ContainerEngine` interface and `cmd/podman`.
The `--pause` and `--extract` flags are now deprecated and turned into
nops.
Note that this commit is vendoring a non-release version of Buildah to
pull in updates to the copier package.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
Make the ContainerLogsOptions support two io.Writers,
one for stdout and the other for stderr. The logline already
includes the information to which Writer it has to be written.
Signed-off-by: Paul Holzinger <paul.holzinger@web.de>
Add an API for parsing user input into a possibly specified container
and path. This allows for sharing the parsing code between the local
and the remote client (and bindings) in the future.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* Add a new `pkg/copy` to centralize all container-copy related code.
* The new code is based on Buildah's `copier` package.
* The compat `/archive` endpoints use the new `copy` package.
* Update docs and an several new tests.
* Includes many fixes, most notably, the look-up of volumes and mounts.
Breaking changes:
* Podman is now expecting that container-destination paths exist.
Before, Podman created the paths if needed. Docker does not do
that and I believe Podman should not either as it's a recipe for
masking errors. These errors may be user induced (e.g., a path
typo), or internal typos (e.g., when the destination may be a
mistakenly unmounted volume). Let's keep the magic low for such
a security sensitive feature.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
The goal is to improve errors when users use the wrong transport
in certain cases we stutter, in other cases we don't give enough
information.
Remove stutters when failing to pull remote images, because of
lack of support.
Fix errors returned by reference.Parse to wrap in image that was being
checked.
Fixes: https://github.com/containers/podman/issues/7116
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
Currently if you run an interactive session of podman run and
specifiy the --cidfile option, the cidfile will not get created
until the container finishes running. If you run a detached
container, it will get created right away. This Patch creates
the cidfile as soon as the container is created. This could allow
other tools to use the cidefile on all running containers.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
External containers are containers created outside of Podman.
For example Buildah and CRI-O Containers.
$ buildah from alpine
alpine-working-container
$ buildah run alpine-working-container touch /test
$ podman container exists --external alpine-working-container
$ podman container diff alpine-working-container
C /etc
A /test
Added --external flag to refer to external containers, rather then --storage.
Added --external for podman container exists and modified podman ps to use
--external rather then --storage. It was felt that --storage would confuse
the user into thinking about changing the storage driver or options.
--storage is still supported through the use of aliases.
Finally podman contianer diff, does not require the --external flag, since it
there is little change of users making the mistake, and would just be a pain
for the user to remember the flag.
podman container exists --external is required because it could fool scripts
that rely on the existance of a Podman container, and there is a potential
for a partial deletion of a container, which could mess up existing users.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
In case os.Open[File], os.Mkdir[All], ioutil.ReadFile and the like
fails, the error message already contains the file name and the
operation that fails, so there is no need to wrap the error with
something like "open %s failed".
While at it
- replace a few places with os.Open, ioutil.ReadAll with
ioutil.ReadFile.
- replace errors.Wrapf with errors.Wrap for cases where there
are no %-style arguments.
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Have a clear separation of concerns for the CLI-only options (and their
logic) from the backend. The backend logic is now easier to understand
(e.g., `stream` instead of `noStream`).
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
Add a new endpoint for container stats allowing for batch operations on
more than one container. The new endpoint deprecates the
single-container endpoint which will eventually be removed with the next
major release.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
Most have been fixed, others I replaced with SkipIfRemote
Fix ContainerStart on tunnel, it needs to wait for the exit status
before returning.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
Refactor the entities' stats API to simplify using it and reduce the
risk of running into concurrency issues at the call sites. Further
simplify the stats code by de-spaghetti-ing the logic and reducing
duplicate code.
`ContainerStats` now returns a data channel and an error. If the error
is nil, callers can read from the channel.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
When we execute podman-remote attach, we were not checking if the
container was in the correct state, this is leading to timeouts and
we had turned off remote testing.
Also added an IfRemote() function so we can turn on more tests when
using the "-l" flag for local, but use container name for remote.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
As error types are not preserved on the client side (due to marshaling),
we cannot use `errors.Cause(...)` and friends but, unfortunately, have
to fall back to looking for substring the error messages.
Change the error checks in remote run to do substring matches and fix
issue #7340.
Fixes: #7340
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
After attaching to a container, we wait for the container to finish and
return its exit code. Waiting for the container may not always succeed,
for instance, when the container has been force removed by another
process. In such case, we have to look at the *last* container-exit
event.
Also refactor the `ContainerRun` method a bit to return early on errors
and de-spaghetti the code.
Enable the remote-disabled system test.
Fixes: #7117
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
The ListContainers API previously had a Pod parameter, which
determined if pod name was returned (but, notably, not Pod ID,
which was returned unconditionally). This was fairly confusing,
so we decided to deprecate/remove the parameter and return it
unconditionally.
To do this without serious performance implications, we need to
avoid expensive JSON decodes of pod configuration in the DB. The
way our Bolt tables are structured, retrieving name given ID is
actually quite cheap, but we did not expose this via the Libpod
API. Add a new GetName API to do this.
Fixes#7214
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
We need to remove the container after it has exited for
podman-remote run --rm commands. If we don't remove this
container at this step, we open ourselves up to race conditions.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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>
These were part of Podman v1.9, but were lost in the transition
to using Specgen to create containers. Most resource limits are
checked via the sysinfo package to ensure they are safe to use
(the cgroup is mounted, kernel support is present, etc) and
removed if not safe. Further, bounds checks are performed to
ensure that values are valid.
Ensure these warnings are printed client-side when they occur.
This part is a little bit gross, as it happens in pkg/infra and
not cmd/podman, which is largely down to how we implemented
`podman run` - all the work is done in pkg/infra and it returns
only once the container has exited, and we need warnings to print
*before* the container runs. The solution here, while inelegant,
avoid the need to extensively refactor our handling of run.
Should fix blkio-limit warnings that were identified by the FCOS
test suite.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
Every line is sent back individually over the APIv2 as
logs, but we are not adding the '\n' to give us line breaks.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
This started as a small fix to `podman inspect` where a container
and image, with the same name/tag, were present, and
`podman inspect` was run on that name. `podman inspect` in 1.9
(and `docker inspect`) will give you the container; in v2.0, we
gave the image. This was an easy fix (just reorder how we check
for image/container).
Unfortunately, in the process of testing this fix, I determined
that we regressed in a different area. When you run inspect on
a number of containers, some of which do not exist,
`podman inspect` should return an array of inspect results for
the objects that exist, then print a number of errors, one for
each object that could not be found. We were bailing after the
first error, and not printing output for the containers that
succeeded. (For reference, this applied to images as well). This
required a much more substantial set of changes to properly
handle - signatures for the inspect functions in ContainerEngine
and ImageEngine, plus the implementations of these interfaces,
plus the actual inspect frontend code needed to be adjusted to
use this.
Fixes#6556
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
This is the other command that benefits greatly from being run in
parallel, due to the potential 15-second timeout for containers
that ignore SIGTERM.
While we're at it, also clean up how stop timeout is set. This
needs to be an optional parameter, so that the value set when the
container is created with `--stop-timeout` will be respected.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
baude