Your message dated Thu, 28 Jan 2021 23:19:19 +0000
with message-id <e1l5gzl-000eib...@fasolo.debian.org>
and subject line Bug#942871: fixed in prometheus-mongodb-exporter
1.0.0+git20180522.e755a44-3
has caused the Debian Bug report #942871,
regarding prometheus-mongodb-exporter: segfaults with mongodb 4.2
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
(NB: If you are a system administrator and have no idea what this
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immediately.)
--
942871: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=942871
Debian Bug Tracking System
Contact ow...@bugs.debian.org with problems
--- Begin Message ---
Package: prometheus-mongodb-exporter
Version: 1.0.0+git20180522.e755a44-1
Severity: important
Tags: patch
Dear maintainer:
On a replica set where mongodb 4.0 and prometheus-mongodb-exporter used
to work ok, an upgrade to mongodb 4.2 makes prometheus-mongodb-exporter
to crash as soon as a request from prometheus is received:
prometheus-mongodb-exporter.service: Main process exited, code=exited,
status=2/INVALIDARGUMENT
prometheus-mongodb-exporter.service: Unit entered failed state.
prometheus-mongodb-exporter.service: Failed with result 'exit-code'.
prometheus-mongodb-exporter.service: Service hold-off time over, scheduling
restart.
My /etc/default/prometheus-mongodb-exporter is like this:
ARGS='-mongodb.uri="mongodb://user:password@localhost:27017" -log_dir
/var/log/prometheus -web.listen-address :9201'
And this is what I do to trigger a segfault:
curl localhost:9201/metrics
I found a solution here:
https://www.bountysource.com/issues/65886524-nil-pointer-panic-when-monitoring-a-mongodb-with-no-username-and-password-set
The attached patch, based on the post above, solves the problem for
me, and I believe it is otherwise harmless for anybody who does not
have the problem. I tested it by applying the patch to the package in
stretch-backports.
Maybe another option would be to switch to this upstream which is said
to be more up-to-date:
https://github.com/percona/mongodb_exporter
but I have not tested it.
Thanks.
--- a/collector/metrics.go
+++ b/collector/metrics.go
@@ -349,7 +349,9 @@ func (replStats *ReplStats) Export(ch chan<-
prometheus.Metric) {
replStats.Apply.Export(ch)
replStats.Buffer.Export(ch)
replStats.Network.Export(ch)
- replStats.PreloadStats.Export(ch)
+ if replStats.PreloadStats != nil {
+ replStats.PreloadStats.Export(ch)
+ }
}
// PreloadStats are the stats associated with preload operation.
--- End Message ---
--- Begin Message ---
Source: prometheus-mongodb-exporter
Source-Version: 1.0.0+git20180522.e755a44-3
Done: Martina Ferrari <t...@debian.org>
We believe that the bug you reported is fixed in the latest version of
prometheus-mongodb-exporter, which is due to be installed in the Debian FTP
archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to 942...@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Martina Ferrari <t...@debian.org> (supplier of updated
prometheus-mongodb-exporter package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmas...@ftp-master.debian.org)
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Format: 1.8
Date: Thu, 28 Jan 2021 22:56:24 +0000
Source: prometheus-mongodb-exporter
Architecture: source
Version: 1.0.0+git20180522.e755a44-3
Distribution: unstable
Urgency: medium
Maintainer: Debian Go Packaging Team
<pkg-go-maintain...@lists.alioth.debian.org>
Changed-By: Martina Ferrari <t...@debian.org>
Closes: 942871
Changes:
prometheus-mongodb-exporter (1.0.0+git20180522.e755a44-3) unstable;
urgency=medium
.
* Add patch to avoid a panic with newer versions of MongoDB.
Closes: #942871
* debian/control: Update S-V to 4.5.1 with no changes.
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