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`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>
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Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>
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Our users are missing certain warning messages that would
make debugging issues with Podman easier.
For example if you do a podman build with a Containerfile
that contains the SHELL directive, the Derective is silently
ignored.
If you run with the log-level warn you get a warning message explainging
what happened.
$ podman build --no-cache -f /tmp/Containerfile1 /tmp/
STEP 1: FROM ubi8
STEP 2: SHELL ["/bin/bash", "-c"]
STEP 3: COMMIT
--> 7a207be102a
7a207be102aa8993eceb32802e6ceb9d2603ceed9dee0fee341df63e6300882e
$ podman --log-level=warn build --no-cache -f /tmp/Containerfile1 /tmp/
STEP 1: FROM ubi8
STEP 2: SHELL ["/bin/bash", "-c"]
STEP 3: COMMIT
WARN[0000] SHELL is not supported for OCI image format, [/bin/bash -c] will be ignored. Must use `docker` format
--> 7bd96fd25b9
7bd96fd25b9f755d8a045e31187e406cf889dcf3799357ec906e90767613e95f
These messages will no longer be lost, when we default to WARNing level.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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Allow automatic generation for shell completion scripts
with the internal cobra functions (requires v1.0.0+).
This should replace the handwritten completion scripts
and even adds support for fish. With this approach it is
less likley that completions and code are out of sync.
We can now create the scripts with
- podman completion bash
- podman completion zsh
- podman completion fish
To test the completion run:
source <(podman completion bash)
The same works for podman-remote and podman --remote and
it will complete your remote containers/images with
the correct endpoints values from --url/--connection.
The completion logic is written in go and provided by the
cobra library. The completion functions lives in
`cmd/podman/completion/completion.go`.
The unit test at cmd/podman/shell_completion_test.go checks
if each command and flag has an autocompletion function set.
This prevents that commands and flags have no shell completion set.
This commit does not replace the current autocompletion scripts.
Closes #6440
Signed-off-by: Paul Holzinger <paul.holzinger@web.de>
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* 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>
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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>
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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>
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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>
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Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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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>
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generate systemd: improve pod-flags filter
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When generating systemd unit for pods, we need to remove certain
pod-related flags from the containers' create commands. Make sure
to account for all the syntax including a single argument with key and
value being split by `=`.
Fixes: #6766
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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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>
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Signed-off-by: Yuan-Hao Chen <yhchen0906@gmail.com>
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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>
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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>
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Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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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>
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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>
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Rename to `containers{_test}.go` to make some place for the upcoming pod
changes.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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Rename the container ID file from "cid" to "ctr-id" to make the
generated unit files a) easier to read and to b) pro-actively
avoid any confusion when pod ID files are being added in the
future.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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* Fix support for socket activation, on remote and service
$ systemd-socket-activate -l 8083 --fdname=podman bin/podman system service --log-level=debug --time=30
$ bin/podman-remote --remote=tcp://[::]:8083 image ls
Or, use the podman.{socket,service} unit files
$ bin/podman-remote --remote=unix:///run/podman/podman.sock image ls
Signed-off-by: Jhon Honce <jhonce@redhat.com>
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We need to consistently use --time rather then --timeout throughout the code.
Fix locations where timeout defaults are not set correctly as well.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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Add support to auto-update containers running in systemd units as
generated with `podman generate systemd --new`.
`podman auto-update` looks up containers with a specified
"io.containers.autoupdate" label (i.e., the auto-update policy).
If the label is present and set to "image", Podman reaches out to the
corresponding registry to check if the image has been updated. We
consider an image to be updated if the digest in the local storage is
different than the one of the remote image. If an image must be
updated, Podman pulls it down and restarts the container. Note that the
restarting sequence relies on systemd.
At container-creation time, Podman looks up the "PODMAN_SYSTEMD_UNIT"
environment variables and stores it verbatim in the container's label.
This variable is now set by all systemd units generated by
`podman-generate-systemd` and is set to `%n` (i.e., the name of systemd
unit starting the container). This data is then being used in the
auto-update sequence to instruct systemd (via DBUS) to restart the unit
and hence to restart the container.
Note that this implementation of auto-updates relies on systemd and
requires a fully-qualified image reference to be used to create the
container. This enforcement is necessary to know which image to
actually check and pull. If we used an image ID, we would not know
which image to check/pull anymore.
Fixes: #3575
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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Move the dbus-connection code from libpod's healthcheck to pkg/systemd
to allow for sharing the logic. Needed for the auto-updates work.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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Add the `default.target` to the failing tests.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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systemd generator: force run container detached if CreateCommand has no detach param
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the podman generated systemd service file has `Type=forking` service,
so the command after `ExecStart=` should not run in front.
if someone created a container and has the detach(`-d`) param missing
like this
```
podman create --name ngxdemo -P nginxdemos/hello
```
and generate the file with `--new` param:
```
podman generate systemd --name --new ngxdemo
```
because `podman run xxx` has no `-d` param,
so the container is not run in background and nerver exit.
and systemd will fail to start the service:
```
sudo systemctl start container-ngxdemo.service
Job for container-ngxdemo.service failed because a timeout was exceeded.
See "systemctl status container-ngxdemo.service" and "journalctl -xe" for details.
```
Signed-off-by: 荒野無燈 <ttys3@outlook.com>
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When enabling a systemd service we can specify which target will start
it by specifying it in the `[INSTALL]` section. In case of root, this
is commonly set to `multi-user.target` which is used to start other
essential system services such as the network manager, D-BUS and more.
However, the `multi-user.target` is not enough on all systems,
especially when running rootless and enabling user services. Multiple
users have reported issues that there isn't even an attempt to start the
service.
Setting the INSTALL target to `default.target` will fix the rootless
case. However, `default.target` may vary among systems. Fedora
Workstation, for instance, sets the `default.target` to the graphical
target (i.e., runlevel 5) while Fedora Server sets it to
`multi-user.target` which is on runlevel 2 and hence way earlier in the
startup sequence.
As INSTALL allows for specifying multiple INSTALL targets, we can set it
to `multi-user.target` to continue supporting existing workloads AND to
`default.target` which MAY redundantly attempt to start it at a later point;
effectively a NOP for the root case and essential for rootless.
Fixes: #5423
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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Remove leading slashes from the run-dir paths. It was meant to make it
explicit that we're dealing with an absolute path but user feedback has
shown that most are aware. It also cleans up the path in the systemctl
status output.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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Add network dependencies to generated systemd services to allow for
enabling them at system startup and have a working network if needed.
Fixes: #4130
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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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>
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