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path: root/libpod/container_internal_linux.go
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* handle dns response from cnibaude2019-09-03
| | | | | | | | | | | | | when cni returns a list of dns servers, we should add them under the right conditions. the defined conditions are as follows: - if the user provides dns, it and only it are added. - if not above and you get a cni name server, it is added and a forwarding dns instance is created for what was in resolv.conf. - if not either above, the entries from the host's resolv.conf are used. Signed-off-by: baude <bbaude@redhat.com> Signed-off-by: baude <bbaude@redhat.com>
* cgroup: fix regression when running systemdGiuseppe Scrivano2019-08-06
| | | | | | | | | | | | | | | commit 223fe64dc0a592fd44e0c9fde9f9e0ca087d566f introduced the regression. When running on cgroups v1, bind mount only /sys/fs/cgroup/systemd as rw, as the code did earlier. Also, simplify the rootless code as it doesn't require any special handling when using --systemd. Closes: https://bugzilla.redhat.com/show_bug.cgi?id=1737554 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* Revert "rootless: Rearrange setup of rootless containers"baude2019-08-06
| | | | | | This reverts commit 80dcd4bebcdc8e280f6b43228561d09c194c328b. Signed-off-by: baude <bbaude@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>
* | Merge pull request #3310 from gabibeyer/rootlessKataOpenShift Merge Robot2019-08-05
|\ \ | |/ |/| rootless: Rearrange setup of rootless containers ***CIRRUS: TEST IMAGES***
| * rootless: Rearrange setup of rootless containersGabi Beyer2019-07-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In order to run Podman with VM-based runtimes unprivileged, the network must be set up prior to the container creation. Therefore this commit modifies Podman to run rootless containers by: 1. create a network namespace 2. pass the netns persistent mount path to the slirp4netns to create the tap inferface 3. pass the netns path to the OCI spec, so the runtime can enter the netns Closes #2897 Signed-off-by: Gabi Beyer <gabrielle.n.beyer@intel.com>
* | Merge pull request #3677 from giuseppe/systemd-cgroupsv2OpenShift Merge Robot2019-08-01
|\ \ | | | | | | systemd, cgroupsv2: not bind mount /sys/fs/cgroup/systemd
| * | systemd, cgroupsv2: not bind mount /sys/fs/cgroup/systemdGiuseppe Scrivano2019-08-01
| |/ | | | | | | | | | | | | | | when running on a cgroups v2 system, do not bind mount the named hierarchy /sys/fs/cgroup/systemd as it doesn't exist anymore. Instead bind mount the entire /sys/fs/cgroup. Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* / Vendor in buildah 1.9.2Daniel J Walsh2019-07-30
|/ | | | Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* podman: support --userns=ns|containerGiuseppe Scrivano2019-07-25
| | | | | | | | allow to join the user namespace of another container. Closes: https://github.com/containers/libpod/issues/3629 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* Implement conmon execPeter Hunt2019-07-22
| | | | | | | | | | | | | | | | | | | | | | This includes: Implement exec -i and fix some typos in description of -i docs pass failed runtime status to caller Add resize handling for a terminal connection Customize exec systemd-cgroup slice fix healthcheck fix top add --detach-keys Implement podman-remote exec (jhonce) * Cleanup some orphaned code (jhonce) adapt remote exec for conmon exec (pehunt) Fix healthcheck and exec to match docs Introduce two new OCIRuntime errors to more comprehensively describe situations in which the runtime can error Use these different errors in branching for exit code in healthcheck and exec Set conmon to use new api version Signed-off-by: Jhon Honce <jhonce@redhat.com> Signed-off-by: Peter Hunt <pehunt@redhat.com>
* golangci-lint round #3baude2019-07-21
| | | | | | | this is the third round of preparing to use the golangci-lint on our code base. Signed-off-by: baude <bbaude@redhat.com>
* Add --ignore-rootfs option for checkpoint/restoreAdrian Reber2019-07-11
| | | | | | | | | | | | | | | | | The newly added functionality to include the container's root file-system changes into the checkpoint archive can now be explicitly disabled. Either during checkpoint or during restore. If a container changes a lot of files during its runtime it might be more effective to migrated the root file-system changes in some other way and to not needlessly increase the size of the checkpoint archive. If a checkpoint archive does not contain the root file-system changes information it will automatically be skipped. If the root file-system changes are part of the checkpoint archive it is also possible to tell Podman to ignore these changes. Signed-off-by: Adrian Reber <areber@redhat.com>
* Include root file-system changes in container migrationAdrian Reber2019-07-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | One of the last limitations when migrating a container using Podman's 'podman container checkpoint --export=/path/to/archive.tar.gz' was that it was necessary to manually handle changes to the container's root file-system. The recommendation was to mount everything as --tmpfs where the root file-system was changed. This extends the checkpoint export functionality to also include all changes to the root file-system in the checkpoint archive. The checkpoint archive now includes a tarstream of the result from 'podman diff'. This tarstream will be applied to the restored container before restoring the container. With this any container can now be migrated, even it there are changes to the root file-system. There was some discussion before implementing this to base the root file-system migration on 'podman commit', but it seemed wrong to do a 'podman commit' before the migration as that would change the parent layer the restored container is referencing. Probably not really a problem, but it would have meant that a migrated container will always reference another storage top layer than it used to reference during initial creation. Signed-off-by: Adrian Reber <areber@redhat.com>
* Correctly set FinishedTime for checkpointed containerAdrian Reber2019-07-11
| | | | | | | | | | | During 'podman container checkpoint' the finished time was not set. This resulted in a strange container status after checkpointing: Exited (0) 292 years ago During checkpointing FinishedTime is now set to time.now(). Signed-off-by: Adrian Reber <areber@redhat.com>
* code cleanupbaude2019-07-08
| | | | | | clean up code identified as problematic by golands inspection Signed-off-by: baude <bbaude@redhat.com>
* libpod removal from main (phase 2)baude2019-06-27
| | | | | | this is phase 2 for the removal of libpod from main. Signed-off-by: baude <bbaude@redhat.com>
* stats: fix cgroup path for rootless containersGiuseppe Scrivano2019-06-26
| | | | Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* remove libpod from mainbaude2019-06-25
| | | | | | | | | | | | | the compilation demands of having libpod in main is a burden for the remote client compilations. to combat this, we should move the use of libpod structs, vars, constants, and functions into the adapter code where it will only be compiled by the local client. this should result in cleaner code organization and smaller binaries. it should also help if we ever need to compile the remote client on non-Linux operating systems natively (not cross-compiled). Signed-off-by: baude <bbaude@redhat.com>
* rootless: add an entry to /etc/hosts when using slirp4netnsGiuseppe Scrivano2019-06-24
| | | | | | Closes: https://github.com/containers/libpod/issues/3405 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* Begin adding support for multiple OCI runtimesMatthew Heon2019-06-19
| | | | | | | | | | | | | Allow Podman containers to request to use a specific OCI runtime if multiple runtimes are configured. This is the first step to properly supporting containers in a multi-runtime environment. The biggest changes are that all OCI runtimes are now initialized when Podman creates its runtime, and containers now use the runtime requested in their configuration (instead of always the default runtime). Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Merge pull request #3297 from rhatdan/systemdOpenShift Merge Robot2019-06-17
|\ | | | | Accidently removed /run/lock from systemd mounts
| * Accidently removed /run/lock from systemd mountsDaniel J Walsh2019-06-11
| | | | | | | | | | | | This is blowing up systemd containers on Ubuntu. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* | rootless: use the slirp4netns builtin DNS firstGiuseppe Scrivano2019-06-12
|/ | | | | | | | | When using slirp4netns, be sure the built-in DNS server is the first one to be used. Closes: https://github.com/containers/libpod/issues/3277 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* migration: add possibility to restore a container with a new nameAdrian Reber2019-06-04
| | | | | | | | | | | | | | | | | | | | The option to restore a container from an external checkpoint archive (podman container restore -i /tmp/checkpoint.tar.gz) restores a container with the same name and same ID as id had before checkpointing. This commit adds the option '--name,-n' to 'podman container restore'. With this option the restored container gets the name specified after '--name,-n' and a new ID. This way it is possible to restore one container multiple times. If a container is restored with a new name Podman will not try to request the same IP address for the container as it had during checkpointing. This implicitly assumes that if a container is restored from a checkpoint archive with a different name, that it will be restored multiple times and restoring a container multiple times with the same IP address will fail as each IP address can only be used once. Signed-off-by: Adrian Reber <areber@redhat.com>
* Added support to migrate containersAdrian Reber2019-06-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This commit adds an option to the checkpoint command to export a checkpoint into a tar.gz file as well as importing a checkpoint tar.gz file during restore. With all checkpoint artifacts in one file it is possible to easily transfer a checkpoint and thus enabling container migration in Podman. With the following steps it is possible to migrate a running container from one system (source) to another (destination). Source system: * podman container checkpoint -l -e /tmp/checkpoint.tar.gz * scp /tmp/checkpoint.tar.gz destination:/tmp Destination system: * podman pull 'container-image-as-on-source-system' * podman container restore -i /tmp/checkpoint.tar.gz The exported tar.gz file contains the checkpoint image as created by CRIU and a few additional JSON files describing the state of the checkpointed container. Now the container is running on the destination system with the same state just as during checkpointing. If the container is kept running on the source system with the checkpoint flag '-R', the result will be that the same container is running on two different hosts. Signed-off-by: Adrian Reber <areber@redhat.com>
* Added helper functions for container migrationAdrian Reber2019-06-03
| | | | | | | | This adds a couple of function in structure members needed in the next commit to make container migration actually work. This just splits of the function which are not modifying existing code. Signed-off-by: Adrian Reber <areber@redhat.com>
* apparmor: don't load/set profile in privileged modeValentin Rothberg2019-05-23
| | | | | | | | | Commit 27f9e23a0b9e already prevents setting the profile when creating the spec but we also need to avoid loading and setting the profile when creating the container. Fixes: #3112 Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* Add --read-only-tmpfs optionsDaniel J Walsh2019-04-26
| | | | | | | | | | | The --read-only-tmpfs option caused podman to mount tmpfs on /run, /tmp, /var/tmp if the container is running int read-only mode. The default is true, so you would need to execute a command like --read-only --read-only-tmpfs=false to turn off this behaviour. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Use the same SELinux label for CRIU log filesAdrian Reber2019-04-12
| | | | | | | | | The SELinux label for the CRIU dump.log was explicitly set in Podman. The label for the restore.log, however, not. This just moves the code to label the log file into a function and calls that functions during checkpoint and restore. Signed-off-by: Adrian Reber <areber@redhat.com>
* Implement podman-remote rmJhon Honce2019-04-09
| | | | | | | | | * refactor command output to use one function * Add new worker pool parallel operations * Implement podman-remote umount * Refactored podman wait to use printCmdOutput() Signed-off-by: Jhon Honce <jhonce@redhat.com>
* Switch Libpod over to new explicit named volumesMatthew Heon2019-04-04
| | | | | | | | | | | | | This swaps the previous handling (parse all volume mounts on the container and look for ones that might refer to named volumes) for the new, explicit named volume lists stored per-container. It also deprecates force-removing volumes that are in use. I don't know how we want to handle this yet, but leaving containers that depend on a volume that no longer exists is definitely not correct. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* userns: do not use an intermediate mount namespaceGiuseppe Scrivano2019-03-29
| | | | | | | | | | | | | | We have an issue in the current implementation where the cleanup process is not able to umount the storage as it is running in a separate namespace. Simplify the implementation for user namespaces by not using an intermediate mount namespace. For doing it, we need to relax the permissions on the parent directories and allow browsing them. Containers that are running without a user namespace, will still maintain mode 0700 on their directory. Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* vendor buildah, image, storage, cniValentin Rothberg2019-03-28
| | | | Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* Resolve review commentsMatthew Heon2019-03-27
| | | | Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Add support to disable creation of network config filesMatthew Heon2019-03-27
| | | | | | | | Specifically, we want to be able to specify whether resolv.conf and /etc/hosts will be create and bind-mounted into the container. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* userns: use the intermediate mountns for volumesGiuseppe Scrivano2019-03-21
| | | | | | | | | | | when --uidmap is used, the user won't be able to access /var/lib/containers/storage/volumes. Use the intermediate mount namespace, that is accessible to root in the container, for mounting the volumes inside the container. Closes: https://github.com/containers/libpod/issues/2713 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* Make sure buildin volumes have the same ownership and permissions as imageDaniel J Walsh2019-03-15
| | | | | | | | | | | | When creating a new image volume to be mounted into a container, we need to make sure the new volume matches the Ownership and permissions of the path that it will be mounted on. For example if a volume inside of a containre image is owned by the database UID, we want the volume to be mounted onto the image to be owned by the database UID. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Merge pull request #2585 from giuseppe/build-honor-netOpenShift Merge Robot2019-03-12
|\ | | | | build: honor --net
| * slirp4netns: add builtin DNS server to resolv.confGiuseppe Scrivano2019-03-11
| | | | | | | | Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* | Ensure that tmpfs mounts do not have symlinksMatthew Heon2019-03-11
|/ | | | | | | | | | | | When mounting a tmpfs, runc attempts to make the directory it will be mounted at. Unfortunately, Golang's os.MkdirAll deals very poorly with symlinks being part of the path. I looked into fixing this in runc, but it's honestly much easier to just ensure we don't trigger the issue on our end. Fixes BZ #1686610 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Don't delete another container's resolv and hosts filesMatthew Heon2019-03-10
| | | | | | | | | | | The logic of deleting and recreating /etc/hosts and /etc/resolv.conf only makes sense when we're the one that creates the files - when we don't, it just removes them, and there's nothing left to use. Fixes #2602 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Move secrets package to buildahDaniel J Walsh2019-03-08
| | | | | | | | Trying to remove circular dependencies between libpod and buildah. First step to move pkg content from libpod to buildah. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Append hosts to dependency container's /etc/hosts filePeter Hunt2019-03-05
| | | | | | Before, any container with a netNS dependency simply used its dependency container's hosts file, and didn't abide its configuration (mainly --add-host). Fix this by always appending to the dependency container's hosts file, creating one if necessary. Signed-off-by: Peter Hunt <pehunt@redhat.com>
* Verify that used OCI runtime supports checkpointAdrian Reber2019-03-01
| | | | | | | | | | To be able to use OCI runtimes which do not implement checkpoint/restore this adds a check to the checkpoint code path and the checkpoint/restore tests to see if it knows about the checkpoint subcommand. If the used OCI runtime does not implement checkpoint/restore the tests are skipped and the actual 'podman container checkpoint' returns an error. Signed-off-by: Adrian Reber <areber@redhat.com>
* Label CRIU log files correctlyAdrian Reber2019-02-26
| | | | | | | | | | | | | | | CRIU creates a log file during checkpointing in .../userdata/dump.log. The problem with this file is, is that CRIU injects a parasite code into the container processes and this parasite code also writes to the same log file. At this point a process from the inside of the container is trying to access the log file on the outside of the container and SELinux prohibits this. To enable writing to the log file from the injected parasite code, this commit creates an empty log file and labels the log file with c.MountLabel(). CRIU uses existing files when writing it logs so the log file label persists and now, with the correct label, SELinux no longer blocks access to the log file. Signed-off-by: Adrian Reber <areber@redhat.com>
* Merge pull request #2358 from rhatdan/namespaceOpenShift Merge Robot2019-02-25
|\ | | | | Fix up handling of user defined network namespaces
| * Fix up handling of user defined network namespacesDaniel J Walsh2019-02-23
| | | | | | | | | | | | | | | | | | If user specifies network namespace and the /etc/netns/XXX/resolv.conf exists, we should use this rather then /etc/resolv.conf Also fail cleaner if the user specifies an invalid Network Namespace. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* | In shared networkNS /etc/resolv.conf&/etc/hosts should be sharedDaniel J Walsh2019-02-23
|/ | | | | | | | | | | We should just bind mount the original containers /etc/resolv.conf and /etchosts into the new container. Changes in the resolv.conf and hosts should be seen by all containers, This matches Docker behaviour. In order to make this work the labels on these files need to have a shared SELinux label. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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