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4.2.0 not reloading
Posted: Thu Aug 25, 2016 3:32 am
by Pitone_Maledetto
Hi all,
I have been searching and reading few posts not only on this forum but also around the web on issues regarding Nagios restart/reload that has been effected at least a couple of versions.
I am running Nagios Core 4.2.0 (just updated from 4.1.1) on a new Debian Jessie machine; I have installed everything form source.
I am also successfully running Nagiosgraph and MRTG Stats in the same installation.
My only issue which I can't resolve and I would like some help with is that the reload does not actually do anything at all.
I have both tried to trig the reload with:
and while tail -f the nagios.log I can see that nothing gets logged hence I think that nothing gets triggered.
At the moment the only option I have is to re-start Nagios every time I make a configuration change or adding a new host. This is for now a not too bad workaround since I am running 3 hosts but I am not going to invest a lot of time using this version if I can't get the reload working.
Thank you in advance for your help and let me know if you need further details in order to help me out or point my struggles to a possible solution.
Regards
Re: 4.2.0 not reloading
Posted: Thu Aug 25, 2016 3:52 pm
by tmcdonald
Please run the reload like this and post the last 20 lines of output:
bash -x /etc/init.d/nagios reload
Re: 4.2.0 not reloading
Posted: Fri Aug 26, 2016 3:19 am
by Pitone_Maledetto
Thank you for your reply tmcdonald.
I have just added another Host going from 4 to 5 and run the reload that you have provided; tail -f /usr/local/nagios/var/nagios.log produces nothing.
The web interface still not updated showing 4 hosts.
Here you go:
Code: Select all
+ TMPFILE=/tmp/.configtest.vglw3ydh
+ /usr/local/nagios/bin/nagios -vp /usr/local/nagios/etc/nagios.cfg
++ grep '^Total Warnings:' /tmp/.configtest.vglw3ydh
++ sed 's/ //g'
++ awk -F: '{print $2}'
+ WARN=0
++ grep '^Total Errors:' /tmp/.configtest.vglw3ydh
++ awk -F: '{print $2}'
++ sed 's/ //g'
+ ERR=0
+ test 0 = 0
+ test 0 = 0
+ echo 'OK - Configuration check verified'
+ chmod 0644 /usr/local/nagios/var/nagios.configtest
+ chown nagios:nagios /usr/local/nagios/var/nagios.configtest
+ /bin/rm /tmp/.configtest.vglw3ydh
+ return 0
+ test '!' -f /usr/local/nagios/var/nagios.lock
+ /etc/init.d/nagios start
[ ok ] Starting nagios (via systemctl): nagios.service.
Re: 4.2.0 not reloading
Posted: Fri Aug 26, 2016 1:57 pm
by tmcdonald
Since this is a Core thing and our C dev will need to look at it, we might be better off filing this on GitHub so it's on his radar sooner:
https://github.com/NagiosEnterprises/nagioscore/issues
If you have an account please make a post there referencing this thread, otherwise let me know and I can file on your behalf.
Re: 4.2.0 not reloading
Posted: Tue Aug 30, 2016 3:48 am
by Pitone_Maledetto
As per advise I have opened the following on GitHub:
4.2.0 not reloading #158
https://github.com/NagiosEnterprises/na ... issues/158
Will keep this thread updated.
Re: 4.2.0 not reloading
Posted: Tue Aug 30, 2016 9:40 am
by jfrickson
<Yoda voice>On my radar, it is.</Yoda voice> 
Run a
tail -f /usr/local/nagios/var/nagios.log and do a
kill -HUP <pid-of-nagios> and let me know if the reload happens.
Re: 4.2.0 not reloading
Posted: Tue Aug 30, 2016 10:40 am
by Pitone_Maledetto
Hi Yoda
,
Thank you for your reply. I have added a new host to test the reload:
Nagios process before the test
Code: Select all
ps -aux | grep -i nagios
nagios 8705 0.0 0.1 14972 2708 ? Ss 13:06 0:02 /usr/local/nagios/bin/nagios /usr/local/nagios/etc/nagios.cfg
nagios 8710 0.0 0.1 10696 2312 ? S 13:06 0:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 8711 0.0 0.1 10696 2200 ? S 13:06 0:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 8712 0.0 0.1 10696 2312 ? S 13:06 0:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 8713 0.0 0.1 10696 2204 ? S 13:06 0:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 8721 0.0 0.0 14456 1444 ? S 13:06 0:01 /usr/local/nagios/bin/nagios /usr/local/nagios/etc/nagios.cfg
Kill and reload
Code: Select all
root@dev-nagios-01: kill -HUP 8705
root@dev-nagios-01: /etc/init.d/nagios reload
Running configuration check...
[ ok ] Starting nagios (via systemctl): nagios.service.
Nagios PID after the reload (to notice the <defunct>)
Code: Select all
root@dev-nagios-01: ps -aux | grep -i nagios
nagios 8705 0.0 0.1 15032 3344 ? Ss 13:06 0:02 /usr/local/nagios/bin/nagios /usr/local/nagios/etc/nagios.cfg
nagios 8712 0.0 0.0 0 0 ? Z 13:06 0:00 [nagios] <defunct>
nagios 8713 0.0 0.0 0 0 ? Z 13:06 0:00 [nagios] <defunct>
nagios 8721 0.0 0.0 14456 1444 ? S 13:06 0:01 /usr/local/nagios/bin/nagios /usr/local/nagios/etc/nagios.cfg
root 13083 0.0 0.0 5844 676 pts/1 S+ 16:16 0:00 tail -f /usr/local/nagios/var/nagios.log
nagios 13303 0.0 0.1 10696 2232 ? S 16:25 0:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 13304 0.0 0.1 10696 2276 ? S 16:25 0:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 13305 0.0 0.1 10696 2216 ? S 16:25 0:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 13306 0.0 0.1 10696 2220 ? S 16:25 0:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
meanwhile the nagios.log
Code: Select all
root@dev-nagios-01: tail -f /usr/local/nagios/var/nagios.log
[1472558813] nerd: Fully initialized and ready to rock!
[1472558813] wproc: Successfully registered manager as @wproc with query handler
[1472558813] wproc: Registry request: name=Core Worker 8710;pid=8710
[1472558813] wproc: Registry request: name=Core Worker 8712;pid=8712
[1472558813] wproc: Registry request: name=Core Worker 8713;pid=8713
[1472558813] wproc: Registry request: name=Core Worker 8711;pid=8711
[1472558813] Successfully launched command file worker with pid 8721
[1472562413] Auto-save of retention data completed successfully.
[1472566013] Auto-save of retention data completed successfully.
[1472569612] Auto-save of retention data completed successfully.
[1472570703] Caught SIGHUP, restarting...
[1472570703] Event broker module 'NERD' deinitialized successfully.
[1472570703] Nagios 4.2.0 starting... (PID=8705)
[1472570703] Local time is Tue Aug 30 16:25:03 BST 2016
[1472570703] LOG VERSION: 2.0
[1472570703] qh: Socket '/usr/local/nagios/var/rw/nagios.qh' successfully initialized
[1472570703] qh: core query handler registered
[1472570703] nerd: Channel hostchecks registered successfully
[1472570703] nerd: Channel servicechecks registered successfully
[1472570703] nerd: Channel opathchecks registered successfully
[1472570703] nerd: Fully initialized and ready to rock!
[1472570703] wproc: Successfully registered manager as @wproc with query handler
[1472570703] wproc: Registry request: name=Core Worker 13303;pid=13303
[1472570703] wproc: Registry request: name=Core Worker 13305;pid=13305
[1472570703] wproc: Registry request: name=Core Worker 13306;pid=13306
[1472570703] wproc: Registry request: name=Core Worker 13304;pid=13304
Had to edit my last statement because I don't get a reload but a re-start since on the web interface all the hosts are grayed out and PENDING.
Re: 4.2.0 not reloading
Posted: Tue Aug 30, 2016 11:07 am
by jfrickson
Pitone_Maledetto wrote:
Kill and reload
Code: Select all
root@dev-nagios-01: kill -HUP 8705
root@dev-nagios-01: /etc/init.d/nagios reload
Running configuration check...
[ ok ] Starting nagios (via systemctl): nagios.service.
meanwhile the nagios.log
Code: Select all
root@dev-nagios-01: tail -f /usr/local/nagios/var/nagios.log
[1472570703] Caught SIGHUP, restarting...
[1472570703] Event broker module 'NERD' deinitialized successfully.
[1472570703] Nagios 4.2.0 starting... (PID=8705)
[1472570703] Local time is Tue Aug 30 16:25:03 BST 2016
[1472570703] LOG VERSION: 2.0
Reload successful!
I see you did both the
kill -HUP 8705 and
/etc/init.d/nagios reload. Did the reload happen from the
kill or the
/etc/init.d/nagios reload?
I also noticed it said
Starting nagios (via systemctl): nagios.service. I didn't think Jessie was running systemd. Please attach
/etc/init.d/nagios and
/usr/lib/systemd/system/nagios.service files.
Since you're running systemd, maybe also try
systemctl reload nagios and see if that works.
Does
kill -HUP 8705 work?
Does
/etc/init.d/nagios reload work?
Does
systemctl reload nagios work?
Re: 4.2.0 not reloading
Posted: Wed Aug 31, 2016 12:54 am
by Pitone_Maledetto
Thanks jfrickson,
Attached you will find the files requested but nagios.service is not inside the directory that you have mentioned but in two different locations:
/etc/systemd/system/nagios.service (attached)
/etc/systemd/system/multi-user.target.wants/nagios.service
I have stopped Nagios and started afresh. I have added a check to test the reload:
NAGIOS STARTED:
Code: Select all
[1472620492] Nagios 4.2.0 starting... (PID=1916)
[1472620492] Local time is Wed Aug 31 06:14:52 BST 2016
[1472620492] LOG VERSION: 2.0
[1472620492] qh: Socket '/usr/local/nagios/var/rw/nagios.qh' successfully initialized
[1472620492] qh: core query handler registered
[1472620492] nerd: Channel hostchecks registered successfully
[1472620492] nerd: Channel servicechecks registered successfully
[1472620492] nerd: Channel opathchecks registered successfully
[1472620492] nerd: Fully initialized and ready to rock!
[1472620492] wproc: Successfully registered manager as @wproc with query handler
[1472620492] wproc: Registry request: name=Core Worker 1921;pid=1921
[1472620492] wproc: Registry request: name=Core Worker 1925;pid=1925
[1472620492] wproc: Registry request: name=Core Worker 1924;pid=1924
[1472620492] wproc: Registry request: name=Core Worker 1922;pid=1922
[1472620492] Successfully launched command file worker with pid 1934
kill -HUP (did not reload but re-started the service; all hosts are in PENDING status)
Code: Select all
[1472620680] Caught SIGHUP, restarting...
[1472620680] Event broker module 'NERD' deinitialized successfully.
[1472620680] Nagios 4.2.0 starting... (PID=1916)
[1472620680] Local time is Wed Aug 31 06:18:00 BST 2016
[1472620680] LOG VERSION: 2.0
[1472620680] qh: Socket '/usr/local/nagios/var/rw/nagios.qh' successfully initialized
[1472620680] qh: core query handler registered
[1472620680] nerd: Channel hostchecks registered successfully
[1472620680] nerd: Channel servicechecks registered successfully
[1472620680] nerd: Channel opathchecks registered successfully
[1472620680] nerd: Fully initialized and ready to rock!
[1472620680] wproc: Successfully registered manager as @wproc with query handler
[1472620680] wproc: Registry request: name=Core Worker 2043;pid=2043
[1472620680] wproc: Registry request: name=Core Worker 2046;pid=2046
[1472620680] wproc: Registry request: name=Core Worker 2044;pid=2044
[1472620680] wproc: Registry request: name=Core Worker 2045;pid=2045
/etc/init.d/nagios reload (did not reload not changes in log output)
systemctl reload nagios (Failed)
root@dev-nagios-01: systemctl reload nagios
Failed to reload nagios.service: Job type reload is not applicable for unit nagios.service.
Thank you for your time
Re: 4.2.0 not reloading
Posted: Wed Aug 31, 2016 9:45 am
by jfrickson
Now that I have a better idea of what's going on, all further conversation will take place on the github issue -
https://github.com/NagiosEnterprises/na ... issues/158