log: add comments to rsyslog gluster configuration file

Comments are added to rsyslog gluster configuration files to give
clear meanings and example email alerting.

Change-Id: I23577dc3b39bca89696c46ab6252dc5673d0803f
BUG: 928648
Signed-off-by: Bala.FA <barumuga@redhat.com>
Reviewed-on: http://review.gluster.org/5621
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>

2 files changed, 71 insertions, 1 deletions

diff --git a/extras/gluster-rsyslog-5.8.conf b/extras/gluster-rsyslog-5.8.conf
index da6232bc07..2519999bca 100644
--- a/extras/gluster-rsyslog-5.8.conf
+++ b/extras/gluster-rsyslog-5.8.conf
@@ -1,15 +1,51 @@
 ##### gluster.conf #####
+
+#
+## If you want to log every message to the log file instead of
+## intelligently suppressing repeated messages, set off to
+## RepeatedMsgReduction.  This change requires rsyslog restart
+## (eg. run 'service rsyslog restart')
+#
+#$RepeatedMsgReduction off
 $RepeatedMsgReduction on
 
+#
+## The mmcount module provides the capability to count log messages by 
+## severity or json property of given app-name.  The count value is added
+## into the log message as json property named '$msgid'
+#
 $ModLoad mmcount
-$mmcountKey gf_code
+$mmcountKey gf_code # start counting value of gf_code
 
 $template Glusterfsd_dynLogFile,"/var/log/glusterfs/bricks/%app-name%.log"
 $template Gluster_dynLogFile,"/var/log/glusterfs/%app-name%.log"
 
 $template GLFS_Template,"%msgid%/%syslogfacility-text:::uppercase%/%syslogseverity-text:::uppercase% [%TIMESTAMP:::date-rfc3339%] %msg:::sp-if-no-1st-sp%%msg:::drop-last-lf%\n"
 
+#
+## Pass logs to mmcount if app-name is 'gluster'
+#
 if $app-name contains 'gluster' then :mmcount:
+
 if $app-name contains 'glusterfsd' then ?Glusterfsd_dynLogFile;GLFS_Template
 if $app-name contains 'gluster' and not ( $app-name contains 'glusterfsd' ) then ?Gluster_dynLogFile;GLFS_Template
+
+#
+## Sample configuration to send a email alert for every 50th mmcount
+#
+#$ModLoad ommail
+#$ActionMailSMTPServer smtp.example.com
+#$ActionMailFrom rsyslog@example.com
+#$ActionMailTo glusteradmin@example.com
+#$template mailSubject,"50th message of gf_code=9999 on %hostname%"
+#$template mailBody,"RSYSLOG Alert\r\nmsg='%msg%'"
+#$ActionMailSubject mailSubject
+#$ActionExecOnlyOnceEveryInterval 30
+#if $app-name == 'glusterfsd' and $msgid != 0 and $msgid % 50 == 0 \
+#then :ommail:;RSYSLOG_SyslogProtocol23Format
+#
+
+#
+## discard logs where app-name is 'gluster' as we processed already
+#
 if $app-name contains 'gluster' then ~
diff --git a/extras/gluster-rsyslog-7.2.conf b/extras/gluster-rsyslog-7.2.conf
index 744acbc9ef..8b2841543f 100644
--- a/extras/gluster-rsyslog-7.2.conf
+++ b/extras/gluster-rsyslog-7.2.conf
@@ -1,9 +1,28 @@
 ##### gluster.conf #####
+#
+## If you want to log every message to the log file instead of
+## intelligently suppressing repeated messages, set off to
+## RepeatedMsgReduction.  This change requires rsyslog restart
+## (eg. run 'service rsyslog restart')
+#
+#$RepeatedMsgReduction off
 $RepeatedMsgReduction on
 
 $ModLoad mmjsonparse
 *.* :mmjsonparse:
 
+#
+## The mmcount module provides the capability to count log messages by 
+## severity or json property of given app-name.  The count value is added
+## into the log message as json property named 'mmcount'
+##
+## More info at http://www.rsyslog.com/doc/mmcount.html
+#
+#module(load="mmcount")
+#action(type="mmcount" appname="glusterd" key="!gf_code") # count each value of gf_code of appname glusterd
+#action(type="mmcount" appname="glusterfsd" key="!gf_code") # count each value of gf_code of appname glusterfsd
+#action(type="mmcount" appname="glusterfs" key="!gf_code") # count each value of gf_code of appname glusterfs
+
 template (name="Glusterfsd_dynLogFile" type="string" string="/var/log/glusterfs/bricks/%app-name%.log")
 template (name="Gluster_dynLogFile" type="string" string="/var/log/glusterfs/%app-name%.log")
 
@@ -40,3 +59,18 @@ if $app-name contains 'gluster' then {
           Template="GLFS_template")
    stop
 }
+
+#
+## send email for every 50th mmcount
+#$ModLoad ommail
+#if $app-name == 'glusterfsd' and $!mmcount <> 0 and $!mmcount % 50 == 0 then {
+#   $ActionMailSMTPServer smtp.example.com
+#   $ActionMailFrom rsyslog@example.com
+#   $ActionMailTo glusteradmin@example.com
+#   $template mailSubject,"50th message of gf_code=9999 on %hostname%"
+#   $template mailBody,"RSYSLOG Alert\r\nmsg='%msg%'"
+#   $ActionMailSubject mailSubject
+#   $ActionExecOnlyOnceEveryInterval 30
+#   :ommail:;RSYSLOG_SyslogProtocol23Format
+#}
+#