[Gluster-users] new glusterfs logging framework

[Joe Julian]

Configuration files should be under /etc per FSH standards. Move the logger.conf to /etc/glusterfs.

I, personally, like json logs since I'm shipping to logstash. :-) My one suggestion would be to ensure the timestamps are in rfc3164.

Yes, those are complex steps, but the rpm/deb packaging should take care of dependencies and setting up logical defaults.

IMHO, since this is a departure from the way it's been before now, the config file should enable this new behavior, not disable it, to avoid breaking existing monitoring installations.

Pablo <paa.listas at gmail.com> wrote:
>I think that adding all that 'rsyslog' configuration only to see logs
>is 
>too much. (I admit it, I don't know how to configure rsyslog at that 
>level so that may influence my opinion)
>
>Regards,
>
>
>El 30/07/2013 06:29 a.m., Balamurugan Arumugam escribió:
>> Hi All,
>>
>> Recently new logging framework was introduced [1][2][3] in glusterfs
>master branch.  You could read more about this on doc/logging.txt.  In
>brief, current log target is moved to syslog and user has an option to
>this new logging at compile time (passing '--disable-syslog' to
>./configure or '--without syslog' to rpmbuild) and run time (having a
>file /var/log/glusterd/logger.conf and restarting gluster services).
>>
>> As rsyslog is used as syslog server in Fedora and CentOS/RHEL and
>default configuration of rsyslog does not have any rule specific to
>gluster logs, you see all logs are in /var/log/messages in JSON format.
>>
>> Below is the way to make them neat and clean.
>>
>> For fedora users:
>> 1. It requires to install rsyslog-mmjsonparse rpm (yum -y install
>rsyslog-mmjsonparse)
>> 2. Place below configuration under /etc/rsyslog.d/gluster.conf file.
>>
>> #$RepeatedMsgReduction on
>>
>> $ModLoad mmjsonparse
>> *.* :mmjsonparse:
>>
>> template (name="GlusterLogFile" type="string"
>string="/var/log/gluster/%app-name%.log")
>> template (name="GlusterPidLogFile" type="string"
>string="/var/log/gluster/%app-name%-%procid%.log")
>>
>> template(name="GLFS_template" type="list") {
>>     property(name="$!mmcount")
>>     constant(value="/")
>>     property(name="syslogfacility-text" caseConversion="upper")
>>     constant(value="/")
>>     property(name="syslogseverity-text" caseConversion="upper")
>>     constant(value=" ")
>>     constant(value="[")
>>     property(name="timereported" dateFormat="rfc3339")
>>     constant(value="] ")
>>     constant(value="[")
>>     property(name="$!gf_code")
>>     constant(value="] ")
>>     constant(value="[")
>>     property(name="$!gf_message")
>>     constant(value="] ")
>>     property(name="$!msg")
>>     constant(value="\n")
>> }
>>
>> if $app-name == 'gluster' or $app-name == 'glusterd' then {
>>     action(type="omfile"
>>            DynaFile="GlusterLogFile"
>>            Template="GLFS_template")
>>     stop
>> }
>>
>> if $app-name contains 'gluster' then {
>>     action(type="omfile"
>>            DynaFile="GlusterPidLogFile"
>>            Template="GLFS_template")
>>     stop
>> }
>>
>>
>> 3. Restart rsyslog (service rsyslog restart)
>> 4. Done. All gluster process specific logs are separated into
>/var/log/gluster/ directory
>>
>>
>> Note: Fedora 19 users
>> There is a bug in rsyslog of fedora 19 [4], so its required to
>recompile rsyslog source rpm downloaded from fedora repository
>('rpmbuild --rebuild rsyslog-7.2.6-1.fc19.src.rpm' works fine) and use
>generated rsyslog and rsyslog-mmjsonparse binary rpms
>>
>> For CentOS/RHEL users:
>> Current rsyslog available in CentOS/RHEL does not have json support. 
>I have added the support which requires some testing.  I will update
>once done.
>>
>>
>> TODO:
>> 1. need to add volume:brick specific tag to logging so that those
>logs can be separated out than pid.
>> 2. enable gfapi to use this logging framework
>>
>>
>> I would like to get feedback/suggestion about this logging framework
>>
>>
>> Regards,
>> Bala
>>
>>
>> [1] http://review.gluster.org/4977
>> [2] http://review.gluster.org/5002
>> [3] http://review.gluster.org/4915
>> [4] https://bugzilla.redhat.com/show_bug.cgi?id=989886
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>
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