Duplicate emails being sent

[snapon_admin]

Starting last night we've started getting duplicate Notifications sent for most, if not all, of our alerts. These alerts are time stamped 10-20 seconds apart usually but are the exact same alert. Here's a snip from the notifications report to show some examples.

notifications report.png

[lmiltchev]

Did you check to see if you have multiple instances of nagios running?

Code: Select all

ps -ef | grep nagios.cfg

Try stopping/starting services (nagios & ndo2db) to see if this is going to help.

What is the version of the Nagios XI that you are currently using? Is there anything custom, that is set up - failover, livestatus, mod gearman?

[snapon_admin]

Code: Select all

[root@lisl-ngos-01-pv ~]# ps -ef | grep nagios.cfg
nagios    8865     1  9 12:24 ?        00:00:03 /usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg
nagios    9117  8865  0 12:24 ?        00:00:00 /usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg
root     15566 28752  0 12:24 pts/0    00:00:00 grep nagios.cfg
nagios   18265     1  3 Jun21 ?        00:52:34 /usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg
nagios   18358 18265  0 Jun21 ?        00:00:04 /usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg

Version 5.4.3 and nothing custom like that. If I stop Nagios and run that same command it still shows 2 instances:

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[root@lisl-ngos-01-pv ~]# ps -ef | grep nagios.cfg
nagios   18265     1  3 Jun21 ?        00:52:37 /usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg
nagios   18358 18265  0 Jun21 ?        00:00:04 /usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg

And then when I start Nagios it shows 4 again.

[dwhitfield]

You have two parents. You need to kill them both (you can still one first). kill 18265 in this case. There should only be one parent. The number of children is not important.

[snapon_admin]

Ok cool, Just for future reference how do I tell the difference between parent and child with his info?

[dwhitfield]

Column three gives the number of the parent process. The parent will have "1" in column 3.

Here's an excerpt of columns 1, 2, and 3

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nagios   18265     1  
nagios   18358 18265

The 8865 processes have a similar pattern.

Please let us know if you have any additional questions.

[snapon_admin]

Got it, thanks much. You can close this up.

[lmiltchev]

example01.PNG

The first line is the "parent" process, the second line is the "child" process- it has the same PID as the parent (8865), and this is normal. See here:

https://support.nagios.com/kb/article/n ... hosts.html

The third line is the "grep", so it's irrelevant. The fourth line is a duplicate nagios process (parent) with PID=18265, and the fifth line is it's "child". For more info on PIDs, PPIDs, etc. see this:

https://delightlylinux.wordpress.com/20 ... -and-ppid/

Hope this helps.