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path: root/pkg/adapter/containers.go
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* Add basic deadlock detection for container start/removeMatthew Heon2020-02-24
| | | | | | | | | | | | | | | We can easily tell if we're going to deadlock by comparing lock IDs before actually taking the lock. Add a few checks for this in common places where deadlocks might occur. This does not yet cover pod operations, where detection is more difficult (and costly) due to the number of locks being involved being higher than 2. Also, add some error wrapping on the Podman side, so we can tell people to use `system renumber` when it occurs. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Friendly amendment: tests, and a help messageEd Santiago2020-02-23
| | | | | | | | | | | 1) Help message for podman port was missing [PORT] 2) Add test for 'podman port'. And, actually, an entire networking test that I'd written some weeks ago but apparently didn't 'git add'. Signed-off-by: Ed Santiago <santiago@redhat.com> Signed-off-by: Brent Baude <bbaude@redhat.com>
* fix port list by container with portbaude2020-02-23
| | | | | | | | | code was erronously misinterpretting the port as a containername. Fixes: #1791832 Signed-off-by: baude <bbaude@redhat.com> Signed-off-by: Brent Baude <bbaude@redhat.com>
* implement reverse reader for log readsBrent Baude2020-02-20
| | | | | | | | in cases where the log file exceeds the available memory of a system, we had a bug that triggered an oom because the entire logfile was being read when the tail parameter was given. this reads in chunks and is more or less memory safe. fixes: #5131 Signed-off-by: Brent Baude <bbaude@redhat.com>
* Fix handler and systemd activation errorsJhon Honce2020-02-17
| | | | | | | | | | | | | | | | | | | On panic from handler: log warning and stack trace, report InternalServerError to client When using `podman system service` make determining the listening endpoint deterministic. // When determining _*THE*_ listening endpoint -- // 1) User input wins always // 2) systemd socket activation // 3) rootless honors XDG_RUNTIME_DIR // 4) if varlink -- adapter.DefaultVarlinkAddress // 5) lastly adapter.DefaultAPIAddress Fixes #5150 Fixes #5151 Signed-off-by: Jhon Honce <jhonce@redhat.com>
* fix bug "" disable detach keysQi Wang2020-02-13
| | | | | | | fix #5166 This patch enables `--detach-keys ""` to disable the feature. "ctrl-p, ctrl-q" will not work after this command. Signed-off-by: Qi Wang <qiwan@redhat.com>
* refactor top codeValentin Rothberg2020-01-15
| | | | | | | | Move the top logic from pkg/adapter into the (*libpod.Container).Top(). This way, we drop the dependency from pkg/api on pkg/adapters and have a clearer separation of concerns. Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* top: use a separate pipe for the error streamValentin Rothberg2020-01-15
| | | | | | | Let's not mix apples and oranges and give stderr a dedicated pipe. This way, we don't return conmon log messages if run in debug mode. Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* v2 api: top improvementsValentin Rothberg2020-01-15
| | | | | | | | * Use `pkg/adapter` to increase code reuse and reduce code redundancy. * Extend swagger docs to mention AIX descriptors. * Document the libpod endpoint which shares the same handler. Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* Merge pull request #4845 from baude/pruneforceOpenShift Merge Robot2020-01-13
|\ | | | | clarify cont
| * clarify container prune --forcebaude2020-01-13
| | | | | | | | | | | | | | | | the --force parameter should only be used for the CLI and should only dictate whether to prompt the user for confirmation. Fixes: #4844 Signed-off-by: baude <bbaude@redhat.com>
* | Merge pull request #4850 from vrothberg/fix-lintingOpenShift Merge Robot2020-01-13
|\ \ | | | | | | Fix linting
| * | make lint: enable gocriticValentin Rothberg2020-01-13
| | | | | | | | | | | | | | | | | | | | | `gocritic` is a powerful linter that helps in preventing certain kinds of errors as well as enforcing a coding style. Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* | | Merge pull request #4817 from rhatdan/codespellOpenShift Merge Robot2020-01-13
|\ \ \ | |/ / |/| | Add codespell to validate spelling mistakes in code.
| * | Add codespell to validate spelling mistakes in code.Daniel J Walsh2020-01-11
| |/ | | | | | | | | | | Fix all errors found by codespell Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* / podman-generate-systemd --newValentin Rothberg2020-01-09
|/ | | | | | | | | | | | | | | Add a --new flag to podman-generate-systemd to create a new container via podman-run instead of starting an existing container. Creating a new container presents the challenge to find a reverse mapping from a container to the CLI flags it can be created with. We are doing this via `(Container).Config.CreateCommand` field, which includes a copy of the process' command from procFS at creating time. This field may not be useful when the container was not created via the Podman CLI (e.g., via a Python script). Hence, we do not guarantee the correctness of the generated files. Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* allow exec to read files of environment variablesbaude2019-12-11
| | | | | | | | | we want the ability to define environment variables in files for the exec command. Fixes: #1782408 Signed-off-by: baude <bbaude@redhat.com>
* Use terminal detach keys sequence specified in the config fileMarco Vedovati2019-12-06
| | | | | | Fixes: #4556 Signed-off-by: Marco Vedovati <mv@sba.lat>
* Ignore ErrCtrRemoved when removing a containerDaniel J Walsh2019-12-03
| | | | Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* filter added to container prune commandKunal Kushwaha2019-11-29
| | | | | | | filter flag helps to filter the containers based on labels, until(time), name, etc for prune command. Signed-off-by: Kunal Kushwaha <kunal.kushwaha@gmail.com>
* podman {pod,} rm/stop: add --ignore flagValentin Rothberg2019-11-25
| | | | | | | | | | | | Add an --ignore flag to podman rm and stop. When specified, Podman will ignore "no such {container,pod}" errors that occur when a specified container/pod is not present in the store (anymore). The motivation behind adding this flag is to write more robust systemd services using Podman. A user might have manually decided to remove a container/pod which would lead to a failure during the `ExecStop` directive of a systemd service referencing that container/pod. Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* podman rm/stop --cidfileValentin Rothberg2019-11-18
| | | | | | | | | | Add a --cidfile flag to podman rm/stop to pass a container ID via a file. Podman run already provides the functionaly to store the ID in a specified file which we now complete with rm/stop. This allows for a better life-cycle management in systemd services. Note that --cdifile can be specified multiple times to rm/stop. Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* Merge pull request #4451 from giuseppe/set-macOpenShift Merge Robot2019-11-07
|\ | | | | podman: add support for specifying MAC
| * podman: add support for specifying MACJakub Filak2019-11-06
| | | | | | | | | | | | | | | | I basically copied and adapted the statements for setting IP. Closes #1136 Signed-off-by: Jakub Filak <jakub.filak@sap.com>
* | Allow users to disable detach keysDaniel J Walsh2019-11-05
|/ | | | | | | | | | If user specifies --detach-keys="", this will disable the feature. Adding define.DefaultDetachKeys to help screen to help identify detach keys. Updated man pages with additonal information. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Merge pull request #4400 from haircommander/exec-hangOpenShift Merge Robot2019-11-01
|\ | | | | Switch to bufio Reader for exec streams
| * Switch to bufio Reader for exec streamsPeter Hunt2019-10-31
| | | | | | | | | | | | | | | | There were many situations that made exec act funky with input. pipes didn't work as expected, as well as sending input before the shell opened. Thinking about it, it seemed as though the issues were because of how os.Stdin buffers (it doesn't). Dropping this input had some weird consequences. Instead, read from os.Stdin as bufio.Reader, allowing the input to buffer before passing it to the container. Signed-off-by: Peter Hunt <pehunt@redhat.com>
* | logs: support --tail 0Giuseppe Scrivano2019-10-31
| | | | | | | | | | | | | | | | | | change the default to -1, so that we can change the semantic of "--tail 0" to not print any existing log line. Closes: https://github.com/containers/libpod/issues/4396 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* | container start: fix regression when using nameValentin Rothberg2019-10-31
|/ | | | | | | | | | | | | When starting a container by using its name as a reference, we should print the name instead of the ID. We regressed on this behaviour with commit b4124485ae7e which made it into Podman v1.6.2. Kudos to openSUSE testing for catching it. To prevent future regressions, extend the e2e tests to check the printed container name/ID. Reported-by: @sysrich Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* bump containers/image to v5.0.0, buildah to v1.11.4Nalin Dahyabhai2019-10-29
| | | | | | | | | Move to containers/image v5 and containers/buildah to v1.11.4. Replace an equality check with a type assertion when checking for a docker.ErrUnauthorizedForCredentials in `podman login`. Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>
* Fix spelling mistakesDaniel J Walsh2019-10-29
| | | | Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Log warn instead of error for removing nonexistant containerTyler Ramer2019-10-25
| | | | | | | | | | In event of a container removal that is no longer in database, log a warning instead of an error, as there is not any problem continuing execution. Resolves #4314 Signed-off-by: Tyler Ramer <tyaramer@gmail.com>
* Merge pull request #4287 from mheon/anonymous_volumesOpenShift Merge Robot2019-10-22
|\ | | | | Add support for anonymous volumes to `podman run -v`
| * Add support for anonymous volumes to `podman run -v`Matthew Heon2019-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously, when `podman run` encountered a volume mount without separate source and destination (e.g. `-v /run`) we would assume that both were the same - a bind mount of `/run` on the host to `/run` in the container. However, this does not match Docker's behavior - in Docker, this makes an anonymous named volume that will be mounted at `/run`. We already have (more limited) support for these anonymous volumes in the form of image volumes. Extend this support to allow it to be used with user-created volumes coming in from the `-v` flag. This change also affects how named volumes created by the container but given names are treated by `podman run --rm` and `podman rm -v`. Previously, they would be removed with the container in these cases, but this did not match Docker's behaviour. Docker only removed anonymous volumes. With this patch we move to that model as well; `podman run -v testvol:/test` will not have `testvol` survive the container being removed by `podman rm -v`. The sum total of these changes let us turn on volume removal in `--rm` by default. Fixes: #4276 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* | Merge pull request #4271 from tylarb/stdin_attachOpenShift Merge Robot2019-10-17
|\ \ | |/ |/| Attach to container if it was created with --interactive
| * Attach stdin to container at start if it was created with --interactiveTyler Ramer2019-10-15
| | | | | | | | | | | | | | | | | | Check to see if the container's start config includes the interactive flag when determining to attach or ignore stdin stream. This is in line with behavior of Docker CLI and engine Signed-off-by: Tyler Ramer <tyaramer@gmail.com>
* | start: print full container IDbklimenko2019-10-16
|/ | | | | | | Now the "podman start" command prints the full ID and has the same behaviour as other commands. Signed-off-by: Boris Klimenko <2@borisklimenko.ru>
* Move OCI runtime implementation behind an interfaceMatthew Heon2019-10-10
| | | | | | | | | | | | For future work, we need multiple implementations of the OCI runtime, not just a Conmon-wrapped runtime matching the runc CLI. As part of this, do some refactoring on the interface for exec (move to a struct, not a massive list of arguments). Also, add 'all' support to Kill and Stop (supported by runc and used a bit internally for removing containers). Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Update c/image to v4.0.1 and buildah to 1.11.3Miloslav Trmač2019-10-04
| | | | | | | | | | | | | | This requires updating all import paths throughout, and a matching buildah update to interoperate. I can't figure out the reason for go.mod tracking github.com/containers/image v3.0.2+incompatible // indirect ((go mod graph) lists it as a direct dependency of libpod, but (go list -json -m all) lists it as an indirect dependency), but at least looking at the vendor subdirectory, it doesn't seem to be actually used in the built binaries. Signed-off-by: Miloslav Trmač <mitr@redhat.com>
* rm: add containers eviction with `rm --force`Marco Vedovati2019-09-25
| | | | | | | | | Add ability to evict a container when it becomes unusable. This may happen when the host setup changes after a container creation, making it impossible for that container to be used or removed. Evicting a container is done using the `rm --force` command. Signed-off-by: Marco Vedovati <mvedovati@suse.com>
* Podman-remote run should wait for exit codeDaniel J Walsh2019-09-12
| | | | | | | | This change matches what is happening on the podman local side and should eliminate a race condition. Also exit commands on the server side should start to return to client. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Use exit code constantsDaniel J Walsh2019-09-12
| | | | | | | We have leaked the exit number codess all over the code, this patch removes the numbers to constants. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* generate systemd: support pods and geneartig filesValentin Rothberg2019-08-21
| | | | | | | | | | | Support generating systemd unit files for a pod. Podman generates one unit file for the pod including the PID file for the infra container's conmon process and one unit file for each container (excluding the infra container). Note that this change implies refactorings in the `pkg/systemdgen` API. Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* libpod, pkg: lookup also for crun failuresGiuseppe Scrivano2019-08-19
| | | | Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* containers, create: debug message on failed deletionGiuseppe Scrivano2019-08-19
| | | | | | | if the container failed to be created, don't assume it is still known to the OCI runtime. Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* containers: look also for 'file not found' in the error messageGiuseppe Scrivano2019-08-12
| | | | Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* Merge pull request #3690 from adrianreber/ignore-static-ipOpenShift Merge Robot2019-08-05
|\ | | | | restore: added --ignore-static-ip option
| * restore: added --ignore-static-ip optionAdrian Reber2019-08-02
| | | | | | | | | | | | | | | | | | | | If a container is restored multiple times from an exported checkpoint with the help of '--import --name', the restore will fail if during 'podman run' a static container IP was set with '--ip'. The user can tell the restore process to ignore the static IP with '--ignore-static-ip'. Signed-off-by: Adrian Reber <areber@redhat.com>
* | Retrieve exit codes for containers via eventsMatthew Heon2019-07-31
| | | | | | | | | | | | | | | | As we previously removed our exit code retrieval code to stop a memory leak, we need a new way of doing this. Fortunately, events is able to do the job for us. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* | podman: fix memleak caused by renaming and not deletingMatthew Heon2019-07-31
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | the exit file If the container exit code needs to be retained, it cannot be retained in tmpfs, because libpod runs in a memcg itself so it can't leave traces with a daemon-less design. This wasn't a memleak detectable by kmemleak for example. The kernel never lost track of the memory and there was no erroneous refcounting either. The reference count dependencies however are not easy to track because when a refcount is increased, there's no way to tell who's still holding the reference. In this case it was a single page of tmpfs pagecache holding a refcount that kept pinned a whole hierarchy of dying memcg, slab kmem, cgropups, unrechable kernfs nodes and the respective dentries and inodes. Such a problem wouldn't happen if the exit file was stored in a regular filesystem because the pagecache could be reclaimed in such case under memory pressure. The tmpfs page can be swapped out, but that's not enough to release the memcg with CONFIG_MEMCG_SWAP_ENABLED=y. No amount of more aggressive kernel slab shrinking could have solved this. Not even assigning slab kmem of dying cgroups to alive cgroup would fully solve this. The only way to free the memory of a dying cgroup when a struct page still references it, would be to loop over all "struct page" in the kernel to find which one is associated with the dying cgroup which is a O(N) operation (where N is the number of pages and can reach billions). Linking all the tmpfs pages to the memcg would cost less during memcg offlining, but it would waste lots of memory and CPU globally. So this can't be optimized in the kernel. A cronjob running this command can act as workaround and will allow all slab cache to be released, not just the single tmpfs pages. rm -f /run/libpod/exits/* This patch solved the memleak with a reproducer, booting with cgroup.memory=nokmem and with selinux disabled. The reason memcg kmem and selinux were disabled for testing of this fix, is because kmem greatly decreases the kernel effectiveness in reusing partial slab objects. cgroup.memory=nokmem is strongly recommended at least for workstation usage. selinux needs to be further analyzed because it causes further slab allocations. The upstream podman commit used for testing is 1fe2965e4f672674f7b66648e9973a0ed5434bb4 (v1.4.4). The upstream kernel commit used for testing is f16fea666898dbdd7812ce94068c76da3e3fcf1e (v5.2-rc6). Reported-by: Michele Baldessari <michele@redhat.com> Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> <Applied with small tweaks to comments> Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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