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podman --events-backend file events --stream=false should never hang. The
problem is that our tail library will wait for the file to be created
which makes sense when we do not run with --stream=false. To fix this we
can just always create the file when the logger is initialized. This
would also help to report errors early on in case the file is not
accessible.
Fixes part one from #15688
Signed-off-by: Paul Holzinger <pholzing@redhat.com>
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[NO NEW TESTS NEEDED]
Signed-off-by: Doug Rabson <dfr@rabson.org>
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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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Update the recent events-log changes to fix the build error.
[NO NEW TESTS NEEDED] since there's no functional change.
Signed-off-by: Valentin Rothberg <vrothberg@redhat.com>
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Add new functions to logfile.go for rotating and truncating
the events log file once the log file and its contents
exceed the maximum size limit while keeping 50% of the
log file's content
Also add tests to verify log rotation and truncation
Signed-off-by: Niall Crowe <nicrowe@redhat.com>
Signed-off-by: Valentin Rothberg <vrothberg@redhat.com>
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Numerous issues remain, especially in tests/e2e.
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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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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Signed-off-by: Daniel J Walsh <dwalsh@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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Use the whitespace linter and fix the reported problems.
[NO TESTS NEEDED]
Signed-off-by: Paul Holzinger <paul.holzinger@web.de>
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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 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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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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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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The logfile driver was not aware that system events existed.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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Also, re-add locking to file eventer Write() to protect against
concurrent events.
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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