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path: root/pkg/systemd/generate/containers.go
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* systemd/generate: change type to notifyValentin Rothberg2021-06-04
| | | | | | | | | | | | | | Change the type of units generated with --new from "forking" to "notify". This brings Podman closer to systemd and opens up Podman to a number of use cases (see #5572). Units generated without --new remain with `type=forking`. I experimented a bit with adding a `--sdnotify` flag to `podman start` but it doesn't really work well since we're competing with the default sdnotify mode set during container creation. Fixes: #5572 Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* generate systemd: make mounts portableValentin Rothberg2021-05-31
| | | | | | | | | | | | | | | | | | | Commit 748826fc88fc fixed a bug where slow mounting of the runroot was causing issues when the units are started at boot. The fix was to add the container's runroot to the required mounts; the graph root has been added as well. Hard-coding the run- and graphroot to the required mounts, however, breaks the portability of units generated with --now. Those units are intended to be running on any machine as, theoreticaly, any user. Make the mounts portable by using the `%t` macro for the run root. Since the graphroot's location varies across root and ordinary users, drop it from the list of required mounts. The graphroot was not causing issues. Fixes: #10493 Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* Add envars to the generated systemd unitPaul Holzinger2021-05-10
| | | | | | | | | | | | | | | The with --new generated systemd unit loses the environment variables when the create command only contains the key without the value. Since podman tries to lookup those values from the environment the unit can fail. This commits ensures that we will add the environment variables to the unit file when this is the case. The container environment variables are looked up in the container spec. Fixes #10101 Signed-off-by: Paul Holzinger <paul.holzinger@web.de>
* podman generate systemd --new do not duplicate paramsPaul Holzinger2021-03-28
| | | | | | | | | | | | | | | | | podman generate systemd --new inserts extra idfile arguments. The generated unit can break when the user did provide their own idfile arguments as they overwrite the arguments added by generate systemd. This also happens when a user tries to generate the systemd unit on a container already create with a --new unit. This should now create a identical unit. The solution is to remove all user provided idfile arguments. This commit also ensures that we do not remove arguments that are part off the containers entrypoint. Fixes #9776 Signed-off-by: Paul Holzinger <paul.holzinger@web.de>
* Add RequiresMountsFor= to systemd generateRobb Manes2021-03-26
| | | | | | | | | | | | | | | It is rare but possible that storage locations for the graphroot and the runroot are not mounted at boot time, and therefore might race when doing container operations. An example we've seen in the wild is that a slow tmpfs mount for the runroot would suddenly mount over /run, causing the container to lose all currently-running data, requiring a system refresh to get it back. This patch adds RequiresMountsFor= to the systemd.unit header to ensure the paths for both the graphroot and runroot are mounted prior to starting any generated unit files. Signed-off-by: Robb Manes <rmanes@redhat.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>
* Merge pull request #9445 from jmguzik/no-header-info-for-systemd-generationOpenShift Merge Robot2021-02-22
|\ | | | | No header info for systemd generation
| * --no-header flag implementation for generate systemdJakub Guzik2021-02-22
| | | | | | | | Signed-off-by: Jakub Guzik <jakubmguzik@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>
* Fix broken podman generate systemd --new with podsPaul Holzinger2021-02-16
| | | | | | | | | | | The unit generation accidentally escaped the %t in the pod id file path. This is a regression caused by #9178. This was not caught by the tests because the test itself was wrong. It used a full path instead of the systemd variable %t like the actual code does. Fixes #9373 Signed-off-by: Paul Holzinger <paul.holzinger@web.de>
* Fix podman generate systemd --new special char handlingPaul Holzinger2021-02-01
| | | | | | | | | | In a systemd unit dollar and percent signs are used for variables. A backslash is used for escape sequences. If any of these characters are used in the create command we have to properly escape them so systemd does not try to interpret them. Fixes #9176 Signed-off-by: Paul Holzinger <paul.holzinger@web.de>
* Make generate systemd --new robust against double curly bracesPaul Holzinger2021-01-20
| | | | | | | | | | | If the container create command contains an argument with double curly braces the golang template parsing can fail since it tries to interpret the value as variable. To fix this change the default delimiter for the internal template to `{{{{`. Fixes #9034 Signed-off-by: Paul Holzinger <paul.holzinger@web.de>
* Make podman generate systemd --new flag parsing more robustPaul Holzinger2021-01-07
| | | | | | | | | | First, use the pflag library to parse the flags. With this we can handle all corner cases such as -td or --detach=false. Second, preserve the root args with --new. They are used for all podman commands in the unit file. (e.g. podman --root /tmp run alpine) Signed-off-by: Paul Holzinger <paul.holzinger@web.de>
* generate systemd: do not set `KillMode`Valentin Rothberg2021-01-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | `KillMode=none` has been deprecated in systemd and is now throwing big warnings when being used. Users have reported the issues upstream (see #8615) and on the mailing list. This deprecation was mainly motivated by an abusive use of third-party vendors causing all kinds of undesired side-effects. For instance, busy mounts that delay reboot. After talking to the systemd team, we came up with the following plan: **Short term**: we can use TimeoutStopSec and remove KillMode=none which will default to cgroup. **Long term**: we want to change the type to sdnotify. The plumbing for Podman is done but we need it for conmon. Once sdnotify is working, we can get rid of the pidfile handling etc. and let Podman handle it. Michal Seklatar came up with a nice idea that Podman increase the time out on demand. That's a much cleaner way than hard-coding the time out in the unit as suggest in the short-term solution. This change is executing the short-term plan and sets a minimum timeout of 60 seconds. User-specified timeouts are added to that. Fixes: #8615 Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* SpellingJosh Soref2020-12-22
| | | | Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>
* Refactor version handling in cmd treeJhon Honce2020-09-18
| | | | | | | * Move from simple string to semver objects * Change client API Version from '1' to 2.0.0 Signed-off-by: Jhon Honce <jhonce@redhat.com>
* generate systemd: catch `--name=foo`Valentin Rothberg2020-09-09
| | | | | | | | | | | The systemd generator looks for certain flags in the containers' create commands to determine which flags need to be added. In case of named containers, the generator adds the `--replace` flag to prevent name conflicts at container creation. Fix the generator to not only cover the `--name foo` syntax but also the `--name=foo` one. Fixes: #7157 Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* APIv2 add generate systemd endpointPaul Holzinger2020-09-02
| | | | | | | | | | | | | Add support for generating systemd units via the api and podman-remote. Change the GenerateSystemdReport type to return the units as map[string]string with the unit name as key. Add `--format` flag to `podman generate systemd` to allow the output to be formatted as json. Signed-off-by: Paul Holzinger <paul.holzinger@web.de>
* generate systemd: quote arguments with whitespaceValentin Rothberg2020-08-19
| | | | | | | | | | | Make sure that arguments with whitespace are properly quoted so they are interpreted as one (and not multiple ones) by systemd. Now `-e tz="america/new york"` will be generated as `-e "tz=america/new york"`. The quotes are moving but the argument is still correct. Fixes: #7285 Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* Switch all references to github.com/containers/libpod -> podmanDaniel J Walsh2020-07-28
| | | | Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* move go module to v2Valentin Rothberg2020-07-06
| | | | | | | | | | | | | | | 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>
* systemd generate: allow manual restart of container units in podsValentin Rothberg2020-06-25
| | | | | | | | Allow manual restarts of container units that are part of a pod. This allows for configuring these containers for auto updates. Fixes: #6770 Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* correct the absolute path of `rm` executableYuan-Hao Chen2020-06-19
| | | | Signed-off-by: Yuan-Hao Chen <yhchen0906@gmail.com>
* generate systemd: `ExecStopPost` for all unitsValentin Rothberg2020-06-17
| | | | | | | | | | | | | | | | Add an `ExecStopPost` run even for units generated without `--new`. Although it may seem redundant to run `container/pod stop` twice at first glance, we really need the post run. If the main PID (i.e., conmon) is killed, systemd will not execute `ExecStop` but only the post one. We made this obeservation in a customer issue and could reproduce the behavior consistently. Hence, the post run is needed to properly clean up when conmon is killed and it's pretty much a NOP in all other cases. Credits to Ulrich Obergfell for throrough and detailed analyses, which ultimately lead to this fix. Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* generate systemd: `--replace` on named containers/podsValentin Rothberg2020-06-15
| | | | | | | | | Use `--replace` for named containers and pods. This will clean up previous containers and podsthat may not have been removed after a system crash. Fixes: #5485 Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* generate systemd: create pod templateValentin Rothberg2020-06-11
| | | | | | | | | | Create a new template for generating a pod unit file. Eventually, this allows for treating and extending pod and container generation seprately. The `--new` flag now also works on pods. Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* generate systemd: refactorValentin Rothberg2020-06-11
| | | | | | | | | | | | Refactor the systemd-unit generation code and move all the logic into `pkg/systemd/generate`. The code was already hard to maintain but I found it impossible to wire the `--new` logic for pods in all the chaos. The code refactoring in this commit will make maintaining the code easier and should make it easier to extend as well. Further changes and refactorings may still be needed but they will easier. Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* generate systemd: rename source filesValentin Rothberg2020-06-11
Rename to `containers{_test}.go` to make some place for the upcoming pod changes. Signed-off-by: Valentin Rothberg <rothberg@redhat.com>