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Bug 1343863

Summary: collectd Causes Spam to System Journal
Product: [Fedora] Fedora Reporter: Geraden <stv.bell07>
Component: collectdAssignee: Ruben Kerkhof <ruben>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: low Docs Contact:
Priority: unspecified    
Version: 23CC: fedora, mail, mhlavink, rh, ruben
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: collectd-5.5.1-3.fc23 collectd-5.5.1-3.fc24 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2016-06-19 07:26:08 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
Script that installs and configures collectd in a very basic way for ease of reproducability. none

Description Geraden 2016-06-08 08:06:12 UTC 
Created attachment 1165858 [details]
Script that installs and configures collectd in a very basic way for ease of reproducability.

Description of problem:

There is a bug in collectd that causes spammy messages to the system journal when using the exec plugin. Each successful data collection from this plugin causes a log entry. This can mean messages at rates of up to (and even over) once per second depending on the number of instances of the plugin configured and their interval settings.

Please note that although collectd-exec is a plugin, it is included in the main collectd package and just requires configuration to use.

The bug has been acknowledged and already fixed by the collectd project maintainers. See Github issue here: https://github.com/collectd/collectd/issues/664 .


Version-Release number of selected component (if applicable):

(Current Fedora 23 package)
Version: 5.5.1 
Release: 2.fc23


How reproducible:

Easily reproducible. Any correct configuration of the exec plugin for collectd will cause the issue. See the man page here: https://collectd.org/documentation/manpages/collectd-exec.5.shtml


Steps to Reproduce:

1. Configure collectd-exec plugin to generate some metric (see attached for a script that sets up an example configuration).


Actual results:

Observe journal with "journalctl -r -u collectd"
Output:
<snip>
... 0 Success: 1 value has been dispatched.
... 0 Success: 1 value has been dispatched.
... 0 Success: 1 value has been dispatched.
... etc.
</snip>


Expected results:

Only non-success cases should generate a journal message.


Additional info:

The commit that fixes the bug can be seen here:
https://github.com/collectd/collectd/commit/10b10a6718dbb87c6890d4bc821a6e21c8b7b527
It has already been accepted and merged with the project's master.
Comment 1 Fedora Update System 2016-06-10 09:57:41 UTC 
collectd-5.5.1-3.fc23 has been submitted as an update to Fedora 23. https://bodhi.fedoraproject.org/updates/FEDORA-2016-227196b5b2
Comment 2 Fedora Update System 2016-06-10 09:57:49 UTC 
collectd-5.5.1-3.fc24 has been submitted as an update to Fedora 24. https://bodhi.fedoraproject.org/updates/FEDORA-2016-d9e0d745ba
Comment 3 Fedora Update System 2016-06-10 17:59:51 UTC 
collectd-5.5.1-3.fc24 has been pushed to the Fedora 24 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-d9e0d745ba
Comment 4 Fedora Update System 2016-06-11 03:54:08 UTC 
collectd-5.5.1-3.fc23 has been pushed to the Fedora 23 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-227196b5b2
Comment 5 Fedora Update System 2016-06-19 07:26:04 UTC 
collectd-5.5.1-3.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
Comment 6 Fedora Update System 2016-07-10 06:00:24 UTC 
collectd-5.5.1-3.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.