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path: root/libpod/container.go
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* Merge pull request #14501 from cdoern/podUTSopenshift-ci[bot]2022-07-06
|\ | | | | podman pod create --uts support
| * podman pod create --uts supportcdoern2022-07-05
| | | | | | | | | | | | | | | | | | | | | | | | add support for the --uts flag in pod create, allowing users to avoid issues with default values in containers.conf. uts follows the same format as other namespace flags: --uts=private (default), --uts=host, --uts=ns:PATH resolves #13714 Signed-off-by: Charlie Doern <cdoern@redhat.com>
* | libpod: switch to golang native error wrappingSascha Grunert2022-07-05
|/ | | | | | | | | We now use the golang error wrapping format specifier `%w` instead of the deprecated github.com/pkg/errors package. [NO NEW TESTS NEEDED] Signed-off-by: Sascha Grunert <sgrunert@redhat.com>
* Fix spelling "read only" -> "read-only"Erik Sjölund2022-07-02
| | | | Signed-off-by: Erik Sjölund <erik.sjolund@gmail.com>
* Fix spelling "setup" -> "set up" and similarErik Sjölund2022-06-22
| | | | | | | | | | * Replace "setup", "lookup", "cleanup", "backup" with "set up", "look up", "clean up", "back up" when used as verbs. Replace also variations of those. * Improve language in a few places. Signed-off-by: Erik Sjölund <erik.sjolund@gmail.com>
* First batch of resolutions to FIXMEsMatthew Heon2022-05-25
| | | | | | | | | Most of these are no longer relevant, just drop the comments. Most notable change: allow `podman kill` on paused containers. Works just fine when I test it. Signed-off-by: Matthew Heon <mheon@redhat.com>
* play kube: service containerValentin Rothberg2022-05-12
| | | | | | | | | | | | | | | | | | | | Add the notion of a "service container" to play kube. A service container is started before the pods in play kube and is (reverse) linked to them. The service container is stopped/removed *after* all pods it is associated with are stopped/removed. In other words, a service container tracks the entire life cycle of a service started via `podman play kube`. This is required to enable `play kube` in a systemd unit file. The service container is only used when the `--service-container` flag is set on the CLI. This flag has been marked as hidden as it is not meant to be used outside the context of `play kube`. It is further not supported on the remote client. The wiring with systemd will be done in a later commit. Signed-off-by: Valentin Rothberg <vrothberg@redhat.com>
* fix: Container.cGroupPath() skip empty line to avoid false error loggingttyS32022-05-10
| | | | | | Signed-off-by: ttyS3 <ttys3.rust@gmail.com> [NO NEW TESTS NEEDED]
* libpod: add c.ConfigWithNetworks()Paul Holzinger2022-05-06
| | | | | | | | | | Reading the networks requires an extra db operation. Most c.Config() callers do not need them so create a new function which returns the config with networks. [NO NEW TESTS NEEDED] Signed-off-by: Paul Holzinger <pholzing@redhat.com>
* pass networks to container clonecdoern2022-05-03
| | | | | | | | | since the network config is a string map, json.unmarshal does not recognize the config and spec as the same entity, need to map this option manually resolves #13713 Signed-off-by: cdoern <cbdoer23@g.holycross.edu>
* enable gocritic linterPaul Holzinger2022-04-26
| | | | | | | | | | | | | | | | | | | | | | The linter ensures a common code style. - use switch/case instead of else if - use if instead of switch/case for single case statement - add space between comment and text - detect the use of defer with os.Exit() - use short form var += "..." instead of var = var + "..." - detect problems with append() ``` newSlice := append(orgSlice, val) ``` This could lead to nasty bugs because the orgSlice will be changed in place if it has enough capacity too hold the new elements. Thus we newSlice might not be a copy. Of course most of the changes are just cosmetic and do not cause any logic errors but I think it is a good idea to enforce a common style. This should help maintainability. Signed-off-by: Paul Holzinger <pholzing@redhat.com>
* libpod: fix c.Hostname() to respect the utsNsCtrPaul Holzinger2022-04-22
| | | | | | | | | | When we lookup the hostname for a given container we have to check if the container is joined to another utsns and use this hostname then instead. This fixes a problem where the `hostname` command would use the correct name but /etc/hostname would contain a different name. Signed-off-by: Paul Holzinger <pholzing@redhat.com>
* Add support for ipc namespace modes "none, private, sharable"Daniel J Walsh2022-04-12
| | | | | | Fixes: #13265 Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Implement Podman Container Clonecdoern2022-02-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | podman container clone takes the id of an existing continer and creates a specgen from the given container's config recreating all proper namespaces and overriding spec options like resource limits and the container name if given in the cli options this command utilizes the common function DefineCreateFlags meaning that we can funnel as many create options as we want into clone over time allowing the user to clone with as much or as little of the original config as they want. container clone takes a second argument which is a new name and a third argument which is an image name to use instead of the original container's the current supported flags are: --destroy (remove the original container) --name (new ctr name) --cpus (sets cpu period and quota) --cpuset-cpus --cpu-period --cpu-rt-period --cpu-rt-runtime --cpu-shares --cpuset-mems --memory --run resolves #10875 Signed-off-by: cdoern <cdoern@redhat.com> Signed-off-by: cdoern <cbdoer23@g.holycross.edu> Signed-off-by: cdoern <cdoern@redhat.com>
* bump go module to version 4Valentin Rothberg2022-01-18
| | | | | | | | | | | | | Automated for .go files via gomove [1]: `gomove github.com/containers/podman/v3 github.com/containers/podman/v4` Remaining files via vgrep [2]: `vgrep github.com/containers/podman/v3` [1] https://github.com/KSubedi/gomove [2] https://github.com/vrothberg/vgrep Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* Standardize on capatalized CgroupsDaniel J Walsh2022-01-14
| | | | Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* use libnetwork from c/commonPaul Holzinger2022-01-12
| | | | | | | | The libpod/network packages were moved to c/common so that buildah can use it as well. To prevent duplication use it in podman as well and remove it from here. Signed-off-by: Paul Holzinger <pholzing@redhat.com>
* Add more checkpoint/restore information to 'inspect'Adrian Reber2021-12-17
| | | | | | | | | | | | | | | | | | | | | | | | This adds the following information to the output of 'podman inspect': * CheckpointedAt - time the container was checkpointed Only set if the container has been checkpointed * RestoredAt - time the container was restored Only set if the container has been restored * CheckpointLog - path to the checkpoint log file (CRIU's dump.log) Only set if the log file exists (--keep) * RestoreLog - path to the restore log file (CRIU's restore.log) Only set if the log file exists (--keep) * CheckpointPath - path to the actual (CRIU) checkpoint files Only set if the checkpoint files exists (--keep) * Restored - set to true if the container has been restored Only set if the container has been restored Signed-off-by: Adrian Reber <areber@redhat.com>
* remove unneeded return value from c.Networks()Paul Holzinger2021-12-14
| | | | | | We do not need to return a extra bool. Signed-off-by: Paul Holzinger <pholzing@redhat.com>
* network db rewrite: migrate existing settingsPaul Holzinger2021-12-14
| | | | | | | | | | | | | | The new network db structure stores everything in the networks bucket. Previously some network settings were not written the the network bucket and only stored in the container config. Instead of the old format which used the container ID as value in the networks buckets we now use the PerNetworkoptions struct there. To migrate existing users we use the state.GetNetworks() function. If it fails to read the new format it will automatically migrate the old config format to the new one. This is allows a flawless migration path. Signed-off-by: Paul Holzinger <pholzing@redhat.com>
* container, cgroup: detect pid terminationGiuseppe Scrivano2021-12-01
| | | | | | | | | | | | | | If the /proc/$PID/cgroup file doesn't exist, then it is likely the container was terminated in the meanwhile so report ErrCtrStopped that is already handled instead of ENOENT. commit a66f40b4df039e94572fa38c070207a435cfa466 introduced the regression. Closes: https://github.com/containers/podman/issues/12457 [NO NEW TESTS NEEDED] it solves a race in the CI that is difficult to reproduce. Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* libpod: improve heuristic to detect cgroupGiuseppe Scrivano2021-11-24
| | | | | | | | | | | improve the heuristic to detect the scope that was created for the container. This is necessary with systemd running as PID 1, since it moves itself to a different sub-cgroup, thus stats would not account for other processes in the same container. Closes: https://github.com/containers/podman/issues/12400 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* secret: honor custom target for secrets with runAditya Rajan2021-11-15
| | | | | | | | | | | Honor custom `target` if specified while running or creating containers with secret `type=mount`. Example: `podman run -it --secret token,type=mount,target=TOKEN ubi8/ubi:latest bash` Signed-off-by: Aditya Rajan <arajan@redhat.com>
* libpod: deduplicate ports in dbPaul Holzinger2021-10-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The OCICNI port format has one big problem: It does not support ranges. So if a users forwards a range of 1k ports with podman run -p 1001-2000 we have to store each of the thousand ports individually as array element. This bloats the db and makes the JSON encoding and decoding much slower. In many places we already use a better port struct type which supports ranges, e.g. `pkg/specgen` or the new network interface. Because of this we have to do many runtime conversions between the two port formats. If everything uses the new format we can skip the runtime conversions. This commit adds logic to replace all occurrences of the old format with the new one. The database will automatically migrate the ports to new format when the container config is read for the first time after the update. The `ParsePortMapping` function is `pkg/specgen/generate` has been reworked to better work with the new format. The new logic is able to deduplicate the given ports. This is necessary the ensure we store them efficiently in the DB. The new code should also be more performant than the old one. To prove that the code is fast enough I added go benchmarks. Parsing 1 million ports took less than 0.5 seconds on my laptop. Benchmark normalize PortMappings in specgen: Please note that the 1 million ports are actually 20x 50k ranges because we cannot have bigger ranges than 65535 ports. ``` $ go test -bench=. -benchmem ./pkg/specgen/generate/ goos: linux goarch: amd64 pkg: github.com/containers/podman/v3/pkg/specgen/generate cpu: Intel(R) Core(TM) i7-10850H CPU @ 2.70GHz BenchmarkParsePortMappingNoPorts-12 480821532 2.230 ns/op 0 B/op 0 allocs/op BenchmarkParsePortMapping1-12 38972 30183 ns/op 131584 B/op 9 allocs/op BenchmarkParsePortMapping100-12 18752 60688 ns/op 141088 B/op 315 allocs/op BenchmarkParsePortMapping1k-12 3104 331719 ns/op 223840 B/op 3018 allocs/op BenchmarkParsePortMapping10k-12 376 3122930 ns/op 1223650 B/op 30027 allocs/op BenchmarkParsePortMapping1m-12 3 390869926 ns/op 124593840 B/op 4000624 allocs/op BenchmarkParsePortMappingReverse100-12 18940 63414 ns/op 141088 B/op 315 allocs/op BenchmarkParsePortMappingReverse1k-12 3015 362500 ns/op 223841 B/op 3018 allocs/op BenchmarkParsePortMappingReverse10k-12 343 3318135 ns/op 1223650 B/op 30027 allocs/op BenchmarkParsePortMappingReverse1m-12 3 403392469 ns/op 124593840 B/op 4000624 allocs/op BenchmarkParsePortMappingRange1-12 37635 28756 ns/op 131584 B/op 9 allocs/op BenchmarkParsePortMappingRange100-12 39604 28935 ns/op 131584 B/op 9 allocs/op BenchmarkParsePortMappingRange1k-12 38384 29921 ns/op 131584 B/op 9 allocs/op BenchmarkParsePortMappingRange10k-12 29479 40381 ns/op 131584 B/op 9 allocs/op BenchmarkParsePortMappingRange1m-12 927 1279369 ns/op 143022 B/op 164 allocs/op PASS ok github.com/containers/podman/v3/pkg/specgen/generate 25.492s ``` Benchmark convert old port format to new one: ``` go test -bench=. -benchmem ./libpod/ goos: linux goarch: amd64 pkg: github.com/containers/podman/v3/libpod cpu: Intel(R) Core(TM) i7-10850H CPU @ 2.70GHz Benchmark_ocicniPortsToNetTypesPortsNoPorts-12 663526126 1.663 ns/op 0 B/op 0 allocs/op Benchmark_ocicniPortsToNetTypesPorts1-12 7858082 141.9 ns/op 72 B/op 2 allocs/op Benchmark_ocicniPortsToNetTypesPorts10-12 2065347 571.0 ns/op 536 B/op 4 allocs/op Benchmark_ocicniPortsToNetTypesPorts100-12 138478 8641 ns/op 4216 B/op 4 allocs/op Benchmark_ocicniPortsToNetTypesPorts1k-12 9414 120964 ns/op 41080 B/op 4 allocs/op Benchmark_ocicniPortsToNetTypesPorts10k-12 781 1490526 ns/op 401528 B/op 4 allocs/op Benchmark_ocicniPortsToNetTypesPorts1m-12 4 250579010 ns/op 40001656 B/op 4 allocs/op PASS ok github.com/containers/podman/v3/libpod 11.727s ``` Signed-off-by: Paul Holzinger <pholzing@redhat.com>
* libpod: add execSessionNoCopyValentin Rothberg2021-09-29
| | | | | | | | | To avoid creating an expensive deep copy, create an internal function to access the exec session. [NO TESTS NEEDED] Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* libpod: do not call (*container).Spec()Valentin Rothberg2021-09-29
| | | | | | | | | | | | Access the container's spec field directly inside of libpod instead of calling Spec() which in turn creates expensive JSON deep copies. Accessing the field directly drops memory consumption of a simple podman run --rm busybox true from ~700kB to ~600kB. [NO TESTS NEEDED] Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* Bump CNI to v1.0.1Paul Holzinger2021-09-22
| | | | | | | | | | | | | | | | | | | | | Update CNI so we can match wrapped errors. This should silence ENOENT warnings when trying to read the cni conflist files. Fixes #10926 Because CNI v1.0.0 contains breaking changes we have to change some import paths. Also we cannot update the CNI version used for the conflist files created by `podman network create` because this would require at least containernetwork-plugins v1.0.1 and a updated dnsname plugin. Because this will take a while until it lands in most distros we should not use this version. So keep using v0.4.0 for now. The update from checkpoint-restore/checkpointctl is also required to make sure it no longer uses CNI to read the network status. [NO TESTS NEEDED] Signed-off-by: Paul Holzinger <pholzing@redhat.com>
* Pod Device Supportcdoern2021-09-20
| | | | | | | | | | added support for pod devices. The device gets added to the infra container and recreated in all containers that join the pod. This required a new container config item to keep track of the original device passed in by the user before the path was parsed into the container device. Signed-off-by: cdoern <cdoern@redhat.com>
* Drop OCICNI dependencyPaul Holzinger2021-09-15
| | | | | | | | | | | We do not use the ocicni code anymore so let's get rid of it. Only the port struct is used but we can copy this into libpod network types so we can debloat the binary. The next step is to remove the OCICNI port mapping form the container config and use the better PortMapping struct everywhere. Signed-off-by: Paul Holzinger <pholzing@redhat.com>
* Wire network interface into libpodPaul Holzinger2021-09-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make use of the new network interface in libpod. This commit contains several breaking changes: - podman network create only outputs the new network name and not file path. - podman network ls shows the network driver instead of the cni version and plugins. - podman network inspect outputs the new network struct and not the cni conflist. - The bindings and libpod api endpoints have been changed to use the new network structure. The container network status is stored in a new field in the state. The status should be received with the new `c.getNetworkStatus`. This will migrate the old status to the new format. Therefore old containers should contine to work correctly in all cases even when network connect/ disconnect is used. New features: - podman network reload keeps the ip and mac for more than one network. - podman container restore keeps the ip and mac for more than one network. - The network create compat endpoint can now use more than one ipam config. The man pages and the swagger doc are updated to reflect the latest changes. Signed-off-by: Paul Holzinger <pholzing@redhat.com>
* Add init containers to generate and play kubeUrvashi Mohnani2021-09-10
| | | | | | | | | | | | | | | Kubernetes has a concept of init containers that run and exit before the regular containers in a pod are started. We added init containers to podman pods as well. This patch adds support for generating init containers in the kube yaml when a pod we are converting had init containers. When playing a kube yaml, it detects an init container and creates such a container in podman accordingly. Note, only init containers created with the init type set to "always" will be generated as the "once" option deletes the init container after it has run and exited. Play kube will always creates init containers with the "always" init container type. Signed-off-by: Urvashi Mohnani <umohnani@redhat.com>
* Add Checkpointed bool to InspectMatthew Heon2021-09-07
| | | | | | | | When inspecting a container, we now report whether the container was stopped by a `podman checkpoint` operation via a new bool in the State portion of inspected, `Checkpointed`. Signed-off-by: Matthew Heon <mheon@redhat.com>
* Implement SD-NOTIFY proxy in conmonDaniel J Walsh2021-08-20
| | | | | | | | | | | | | | | | This leverages conmon's ability to proxy the SD-NOTIFY socket. This prevents locking caused by OCI runtime blocking, waiting for SD-NOTIFY messages, and instead passes the messages directly up to the host. NOTE: Also re-enable the auto-update tests which has been disabled due to flakiness. With this change, Podman properly integrates into systemd. Fixes: #7316 Signed-off-by: Joseph Gooch <mrwizard@dok.org> Signed-off-by: Daniel J Walsh <dwalsh@redhat.com> Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* Run codespell to fix spellingDaniel J Walsh2021-08-11
| | | | | | [NO TESTS NEEDED] Just fixing spelling. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Add support for pod inside of user namespace.Daniel J Walsh2021-08-09
| | | | | | | | | | | | | Add the --userns flag to podman pod create and keep track of the userns setting that pod was created with so that all containers created within the pod will inherit that userns setting. Specifically we need to be able to launch a pod with --userns=keep-id Signed-off-by: Daniel J Walsh <dwalsh@redhat.com> Signed-off-by: Urvashi Mohnani <umohnani@redhat.com>
* ps: support the container notation for ps --filter network=...flouthoc2021-07-30
| | | | Signed-off-by: flouthoc <flouthoc.git@gmail.com>
* container: ignore named hierarchiesGiuseppe Scrivano2021-06-10
| | | | | | | | | | when looking up the container cgroup, ignore named hierarchies since containers running systemd as payload will create a sub-cgroup and move themselves there. Closes: https://github.com/containers/podman/issues/10602 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* Add the option of Rootless CNI networking by defaultMatthew Heon2021-05-26
| | | | | | | | | | | | | | | | | | | When the containers.conf field "NetNS" is set to "Bridge" and the "RootlessNetworking" field is set to "cni", Podman will now handle rootless in the same way it does root - all containers will be joined to a default CNI network, instead of exclusively using slirp4netns. If no CNI default network config is present for the user, one will be auto-generated (this also works for root, but it won't be nearly as common there since the package should already ship a config). I eventually hope to remove the "NetNS=Bridge" bit from containers.conf, but let's get something in for Brent to work with. Signed-off-by: Matthew Heon <mheon@redhat.com>
* Merge pull request #10366 from ashley-cui/secretoptionsOpenShift Merge Robot2021-05-17
|\ | | | | Support uid,gid,mode options for secrets
| * Support uid,gid,mode options for secretsAshley Cui2021-05-17
| | | | | | | | | | | | | | Support UID, GID, Mode options for mount type secrets. Also, change default secret permissions to 444 so all users can read secret. Signed-off-by: Ashley Cui <acui@redhat.com>
* | Add host.containers.internal entry into container's etc/hostsBaron Lenardson2021-05-17
|/ | | | | | | | | | | This change adds the entry `host.containers.internal` to the `/etc/hosts` file within a new containers filesystem. The ip address is determined by the containers networking configuration and points to the gateway address for the containers networking namespace. Closes #5651 Signed-off-by: Baron Lenardson <lenardson.baron@gmail.com>
* Do not leak libpod package into the remote clientPaul Holzinger2021-03-15
| | | | | | | | | | | | | | | | | | Some packages used by the remote client imported the libpod package. This is not wanted because it adds unnecessary bloat to the client and also causes problems with platform specific code(linux only), see #9710. The solution is to move the used functions/variables into extra packages which do not import libpod. This change shrinks the remote client size more than 6MB compared to the current master. [NO TESTS NEEDED] I have no idea how to test this properly but with #9710 the cross compile should fail. Signed-off-by: Paul Holzinger <paul.holzinger@web.de>
* podman cp: support copying on tmpfs mountsValentin Rothberg2021-03-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Traditionally, the path resolution for containers has been resolved on the *host*; relative to the container's mount point or relative to specified bind mounts or volumes. While this works nicely for non-running containers, it poses a problem for running ones. In that case, certain kinds of mounts (e.g., tmpfs) will not resolve correctly. A tmpfs is held in memory and hence cannot be resolved relatively to the container's mount point. A copy operation will succeed but the data will not show up inside the container. To support these kinds of mounts, we need to join the *running* container's mount namespace (and PID namespace) when copying. Note that this change implies moving the copy and stat logic into `libpod` since we need to keep the container locked to avoid race conditions. The immediate benefit is that all logic is now inside `libpod`; the code isn't scattered anymore. Further note that Docker does not support copying to tmpfs mounts. Tests have been extended to cover *both* path resolutions for running and created containers. New tests have been added to exercise the tmpfs-mount case. For the record: Some tests could be improved by using `start -a` instead of a start-exec sequence. Unfortunately, `start -a` is flaky in the CI which forced me to use the more expensive start-exec option. Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* Add U volume flag to chown source volumesEduardo Vega2021-02-22
| | | | Signed-off-by: Eduardo Vega <edvegavalerio@gmail.com>
* bump go module to v3Valentin Rothberg2021-02-22
| | | | | | | | | We missed bumping the go module, so let's do it now :) * Automated go code with github.com/sirkon/go-imports-rename * Manually via `vgrep podman/v2` the rest Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* Enable whitespace linterPaul Holzinger2021-02-11
| | | | | | | | Use the whitespace linter and fix the reported problems. [NO TESTS NEEDED] Signed-off-by: Paul Holzinger <paul.holzinger@web.de>
* Implement SecretsAshley Cui2021-02-09
| | | | | | | | | | | Implement podman secret create, inspect, ls, rm Implement podman run/create --secret Secrets are blobs of data that are sensitive. Currently, the only secret driver supported is filedriver, which means creating a secret stores it in base64 unencrypted in a file. After creating a secret, a user can use the --secret flag to expose the secret inside the container at /run/secrets/[secretname] This secret will not be commited to an image on a podman commit Signed-off-by: Ashley Cui <acui@redhat.com>
* podman generate kube ignores --network=hostMilivoje Legenovic2021-01-30
| | | | Signed-off-by: Milivoje Legenovic <m.legenovic@gmail.com>
* libpod: handle single user mapped as rootGiuseppe Scrivano2020-12-24
| | | | | | | | | | | if a single user is mapped in the user namespace, handle it as root. It is needed for running unprivileged containers with a single user available without being forced to run with euid and egid set to 0. Needs: https://github.com/containers/storage/pull/794 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* container cgroup pathValentin Rothberg2020-12-07
| | | | | | | | Before querying for a container's cgroup path, make sure that the container is synced. Also make sure to error out if the container isn't running. Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-11-02 15:22:52 +0000