The infamous Unable to get process status

[amprantino]

I have upgraded an old installation to a new server, plus new Nagios version (4.4.1)

After the upgrade I face some problems. The first one I have to face is the "Unable to get process status"

Debiam v9.5

service nagios status
● nagios.service - Nagios Core 4.4.1
Loaded: loaded (/lib/systemd/system/nagios.service; enabled; vendor preset: enabled)
Active: failed (Result: exit-code) since Wed 2018-08-01 17:23:28 EEST; 13min ago
Docs: https://www.nagios.org/documentation
Process: 105639 ExecStopPost=/bin/rm -f /var/log/nagios/rw/nagios.cmd (code=exited, status=0/SUCCESS)
Process: 105636 ExecStop=/bin/kill -s TERM ${MAINPID} (code=exited, status=1/FAILURE)
Process: 121112 ExecStart=/usr/bin/nagios -d /etc/nagios/nagios.cfg (code=exited, status=254)
Process: 121109 ExecStartPre=/usr/bin/nagios -v /etc/nagios/nagios.cfg (code=exited, status=0/SUCCESS)
Main PID: 103295 (code=exited, status=0/SUCCESS)

Aug 01 17:23:29 davinci nagios[121109]: Checked 640 hosts
Aug 01 17:23:29 davinci nagios[121109]: Checked 0 service dependencies
Aug 01 17:23:29 davinci nagios[121109]: Checked 200 host dependencies
Aug 01 17:23:29 davinci nagios[121109]: Checked 12 timeperiods
Aug 01 17:23:29 davinci nagios[121109]: Checking global event handlers...
Aug 01 17:23:29 davinci nagios[121109]: Checking obsessive compulsive processor commands...
Aug 01 17:23:29 davinci nagios[121109]: Checking misc settings...
Aug 01 17:23:29 davinci nagios[121109]: Total Warnings: 0
Aug 01 17:23:29 davinci nagios[121109]: Total Errors: 0
Aug 01 17:23:29 davinci nagios[121109]: Things look okay - No serious problems were detected during the pre-flight check

selinux is disabled

Apache2 logs:

Code: Select all

[Wed Aug 01 17:47:13.866061 2018] [cgi:error] [pid 147927] [client 192.168.241.54:56794] End of script output before headers: statusjson.cgi, referer: https://nagios.mydomain.com/main.php
[Wed Aug 01 17:47:49.058590 2018] [cgi:error] [pid 147928] [client 192.168.241.54:56817] AH01215: (13)Permission denied: exec of '/var/www/nagios_ramdisk/cgi-bin/statusjson.cgi' failed: /var/www/nagios_ramdisk/cgi-bin/statusjson.cgi, referer: https://nagios.mydomain.com/main.php
[Wed Aug 01 17:47:49.060342 2018] [cgi:error] [pid 147928] [client 192.168.241.54:56817] End of script output before headers: statusjson.cgi, referer: https://nagios.mydomain.com/main.php

I dont understand how to solve this permission (?) issue....

[amprantino]

The problem was that apache2 was accessing a ramdisk.
The ramdisk was mounted with options "nodev,nosuid,noexec,nodiratime,size=1024M" and apache2 didnt like it.

mount -o remount,nodiratime,nosuid,nodev /var/www/nagios_ramdisk
did the job. noexec option was causing all the problems with the cgis

You may close the topic
Thank you

[cdienger]

Glad to hear you were able to resolve it! Thanks for posting your fix as well!