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This allows tools like Cockpit to know that the pod in question
has also been updated, so they can refresh the list of containers
in the pod.
Fixes #15408
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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Currently podman events will just fail with `Error: failed to get journal
cursor: failed to get cursor: cannot assign requested address` when the
journal contains zero podman events.
The problem is that we are using the journal accessors wrong. There is no
need to call GetCursor() and compare them manually. The Next() return an
integer which tells if it moved to the next or not. This means the we can
remove GetCursor() which would fail when there is no entry.
This also includes another bug fix. Previously the logic called Next()
twice for the first entry which caused us to miss the first entry.
To reproduce this issue you can run the following commands:
```
sudo journalctl --rotate
sudo journalctl --vacuum-time=1s
```
Note that this will delete the full journal.
Now run podman events and it fails but with this patch it works.
Now generate a single event, i.e. podman pull alpine, and run
podman events --until 1s.
I am not sure how to get a reliable test into CI, I really do not want
to delete the journal and developer or CI systems.
Fixes second part of #15688
Signed-off-by: Paul Holzinger <pholzing@redhat.com>
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When running a single podman logs this is not really important since we
will exit when we finish reading the logs. However for the system
service this is very important. Leaking goroutines will cause an
increased memory and CPU ussage over time.
Both the the event and log backend have goroutine leaks with both the
file and journald drivers.
The journald backend has the problem that journal.Wait(IndefiniteWait)
will block until we get a new journald event. So when a client closes
the connection the goroutine would still wait until there is a new
journal entry. To fix this we just wait for a maximum of 5 seconds,
after that we can check if the client connection was closed and exit
correctly in this case.
For the file backend we can fix this by waiting for either the log line
or context cancel at the same time. Currently it would block waiting for
new log lines and only check afterwards if the client closed the
connection and thus hang forever if there are no new log lines.
[NO NEW TESTS NEEDED] I am open to ideas how we can test memory leaks in
CI.
To test manually run a container like this:
`podman run --log-driver $driver --name test -d alpine sh -c 'i=1; while [ "$i" -ne 1000 ]; do echo "line $i"; i=$((i + 1)); done; sleep inf'`
where `$driver` can be either `journald` or `k8s-file`.
Then start the podman system service and use:
`curl -m 1 --output - --unix-socket $XDG_RUNTIME_DIR/podman/podman.sock -v 'http://d/containers/test/logs?follow=1&since=0&stderr=1&stdout=1' &>/dev/null`
to get the logs from the API and then it closes the connection after 1 second.
Now run the curl command several times and check the memory usage of the service.
Fixes #14879
Signed-off-by: Paul Holzinger <pholzing@redhat.com>
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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>
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Show Health Status events
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Previously, health status events were not being generated at all. Both
the API and `podman events` will generate health_status events.
```
{"status":"health_status","id":"ae498ac3aa6c63db8b69a37583a6eae1a9cefbdbdbeeadcf8e1d66d745f0df63","from":"localhost/healthcheck-demo:latest","Type":"container","Action":"health_status","Actor":{"ID":"ae498ac3aa6c63db8b69a37583a6eae1a9cefbdbdbeeadcf8e1d66d745f0df63","Attributes":{"containerExitCode":"0","image":"localhost/healthcheck-demo:latest","io.buildah.version":"1.26.1","maintainer":"NGINX Docker Maintainers \u003cdocker-maint@nginx.com\u003e","name":"healthcheck-demo"}},"scope":"local","time":1656082205,"timeNano":1656082205882271276,"HealthStatus":"healthy"}
```
```
2022-06-24 11:06:04.886238493 -0400 EDT container health_status ae498ac3aa6c63db8b69a37583a6eae1a9cefbdbdbeeadcf8e1d66d745f0df63 (image=localhost/healthcheck-demo:latest, name=healthcheck-demo, health_status=healthy, io.buildah.version=1.26.1, maintainer=NGINX Docker Maintainers <docker-maint@nginx.com>)
```
Signed-off-by: Jake Correnti <jcorrenti13@gmail.com>
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The merge of both 528739cef3d2 and 1b62e4543845 at the same time created
a lint error on main.
Signed-off-by: Paul Holzinger <pholzing@redhat.com>
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Lint the systemd code and fix the reported problems.
The remoteclient tag is no longer used so I just removed it.
[NO NEW TESTS NEEDED]
Signed-off-by: Paul Holzinger <pholzing@redhat.com>
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Signed-off-by: Valentin Rothberg <vrothberg@redhat.com>
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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>
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Remove ERROR: Error stutter from logrus messages also.
[ NO TESTS NEEDED] This is just code cleanup.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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Standardize on no-trunc through the code.
Alias notruncate where necessary.
Standardize on the man page display of no-trunc.
Fixes: https://github.com/containers/podman/issues/8941
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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we were adding a negative duration in podman events, causing inputs like
-5s to be correct and 5s to be incorrect.
fixes #11158
Signed-off-by: cdoern <cdoern@redhat.com>
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While different filters are applied in conjunction, the same filter (but
with different values) should be applied in disjunction. This allows,
for instance, to query the events of two containers.
Fixes: #10507
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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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>
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when reading from journald, we need to close the journal handler for
events and logging.
Fixes: #8864
Signed-off-by: baude <bbaude@redhat.com>
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The podman events aren't read until the given timestamp if the
timestamp is in the future. It just reads all events until now
and exits afterwards.
This does not make sense and does not match docker. The correct
behavior is to read all events until the given time is reached.
This fixes a bug where the wrong event log file path was used
when running first time with a new storage location.
Fixes #8694
This also fixes the events api endpoint which only exited when
an error occurred. Otherwise it just hung after reading all events.
Signed-off-by: Paul Holzinger <paul.holzinger@web.de>
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this enables the ability to connect and disconnect a container from a
given network. it is only for the compatibility layer. some code had to
be refactored to avoid circular imports.
additionally, tests are being deferred temporarily due to some
incompatibility/bug in either docker-py or our stack.
Signed-off-by: baude <bbaude@redhat.com>
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Fix the AddMatch/SeekTail conflict. This prevents reading
unnecessary journal entries which could cause errors.
Also wrap the sdjournal errors to provide better error messages.
Fixes #8125
Signed-off-by: Paul Holzinger <paul.holzinger@web.de>
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adding the ability to filter evens by the container labels. this requires that container labels be added to the events data being recorded and subsequently read.
Signed-off-by: baude <bbaude@redhat.com>
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Some calls to `Sprintf("%s")` can be avoided by using direct string
type assertions.
Signed-off-by: Sascha Grunert <sgrunert@suse.com>
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Fix a potential panic in the events endpoint when parsing the filters
parameter. Values of the filters map might be empty, so we need to
account for that instead of uncondtitionally accessing the first item.
Also apply a similar for race conditions as done in commit f4a2d25c0fca:
Fix a race that could cause read errors to be masked. Masking
such errors is likely to report red herrings since users don't
see that reading failed for some reasons but that a given event
could not be found.
Another race was the handler closing event channel, which could lead to
two kinds of panics: double close, send to close channel. The backend
takes care of that. However, make sure that the backend stops working
in case the context has been cancelled.
Fixes: #6899
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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We weren't actually halting the goroutine that sent events, so it
would continue sending even when the channel closed (the most
notable cause being early hangup - e.g. Control-c on a curl
session). Use a context to cancel the events goroutine and stop
sending events.
Fixes #6805
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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Update the outdated systemd and dbus dependencies which are now provided
as go modules. This will further tighten our dependencies and releases
and pave the way for the upcoming auto-update feature.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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in case of errors, the channel is not closed, blocking the reader
indefinitely.
Closes: https://bugzilla.redhat.com/show_bug.cgi?id=1767663
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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in the case where the host has a large journald, iterating the journal
without using a Match is very poor performance. this might be a
temporary fix while we figure out why the systemd library does not seem to
behave properly.
Signed-off-by: baude <bbaude@redhat.com>
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JSON optimizes it out in that case anyways, so don't waste cycles
doing an Itoa (and Atoi on the decode side).
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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We weren't actually storing this, so we'd lose the exit code for
containers run with --rm or force-removed while running if the
journald backend for events was in use.
Fixes #3795
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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it looks like the core-os systemd library has some issue when using
seektail and add match. this patch works around that shortcoming for
the time being.
Fixes: #3616
Signed-off-by: baude <bbaude@redhat.com>
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to help with future debugging, we now display the type of event logger
being used inside podman info -> host.
Signed-off-by: baude <bbaude@redhat.com>
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an internal change in libpod will soon required the ability to lookup
the last container event using the continer name or id and the type of
event. this pr is in preperation for that need.
Signed-off-by: baude <bbaude@redhat.com>
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once the default event logger was removed from libpod.conf, we need to
set the default based on whether the systemd build tag is used or not.
Signed-off-by: baude <bbaude@redhat.com>
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If the systemd development files are not present on the system which
builds podman, then `podman events` will error on runtime creation.
Beside this, a warning will be printed when compiling podman.
This commit mainly exists because projects which depend on libpod
would not need the podman event support and therefore do not need to
rely on the systemd headers.
Signed-off-by: Sascha Grunert <sgrunert@suse.com>
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Signed-off-by: Matthew Heon <mheon@redhat.com>
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add the ability for podman to read and write events to journald instead
of just a logfile. This can be controlled in libpod.conf with the
`events_logger` attribute of `journald` or `file`. The default will be
set to `journald`.
Signed-off-by: baude <bbaude@redhat.com>
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