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Nagios Service is working but Webinterface shows Error
Posted: Tue Mar 27, 2018 2:21 pm
by ardstr
Hi together,
in our company we are using nagios to monitor the functions our the servers.
A few days ago we had the Problem, that nagios.cmd was not working so I tried to do some troubleshooting with the Information of other topics.
But now we are having an even more big problem
Verifying the nagios configuration brings me this:
Code: Select all
nagios@XXXX:/usr/local/nagios/etc$ /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg
Nagios Core 4.0.6
Copyright (c) 2009-present Nagios Core Development Team and Community Contributors
Copyright (c) 1999-2009 Ethan Galstad
Last Modified: 04-29-2014
License: GPL
Website: http://www.nagios.org
Reading configuration data...
Read main config file okay...
Read object config files okay...
Running pre-flight check on configuration data...
Checking objects...
Checked 588 services.
Checked 132 hosts.
Checked 8 host groups.
Checked 0 service groups.
Checked 4 contacts.
Checked 1 contact groups.
Checked 35 commands.
Checked 5 time periods.
Checked 0 host escalations.
Checked 0 service escalations.
Checking for circular paths...
Checked 132 hosts
Checked 0 service dependencies
Checked 0 host dependencies
Checked 5 timeperiods
Checking global event handlers...
Checking obsessive compulsive processor commands...
Checking misc settings...
Total Warnings: 0
Total Errors: 0
Things look okay - No serious problems were detected during the pre-flight check
The log file of nagios don't shows any errors to me.
The Nagios service is running....
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nagios@XXXX:/usr/local/nagios/etc$ service nagios status
nagios (pid 12663) is running...
But the Webinterface shows me this:
Whoops!
Error: Could not read object configuration data!
Here are some things you should check in order to resolve this error:
Verify configuration options using the -v command-line option to check for errors.
Check the Nagios log file for messages relating to startup or status data errors.
Make sure you read the documentation on installing, configuring and running Nagios thoroughly before continuing. If all else fails, try sending a message to one of the mailing lists. More information can be found at
http://www.nagios.org.
Apache2 service is running normally and the www-data user is member of both groups
Code: Select all
nagios@b13lxhr01:/usr/local/nagios/etc$ grep nag /etc/group
nagios:x:1001:nagios,www-data
nagcmd:x:1002:www-data,nagios
The premission on direcotorys look right to me, if needed i can upload configurations..
I don't have any idea what it could also be so i hope to find help in this support forum.
Thanks for your help.
Re: Nagios Service is working but Webinterface shows Error
Posted: Tue Mar 27, 2018 3:08 pm
by scottwilkerson
Is www-data for sure your httpd user and not apache?
Is selinux enabled?
try
then restart httpd
Re: Nagios Service is working but Webinterface shows Error
Posted: Wed Mar 28, 2018 5:49 am
by ardstr
Hi Scott,
at first: Thanks for your fast answer!
Yes in Apache2 as user www-data is configured...
I tried the setenforce 0 but after this command nagios says, that selinux is not installed yet. So i guess this is not the problem...
Re: Nagios Service is working but Webinterface shows Error
Posted: Wed Mar 28, 2018 9:15 am
by scottwilkerson
Can you show the permissions for the objects.cached file and the directory it resides in?
Re: Nagios Service is working but Webinterface shows Error
Posted: Wed Mar 28, 2018 10:59 am
by ardstr
Code: Select all
nagios@XXXX:~$ ls -la /usr/local/nagios/var
insgesamt 3628
drwxrw-rw- 5 nagios nagios 4096 Mär 28 17:56 .
drwxr-xr-x 9 root root 4096 Mai 21 2014 ..
drwxrwxr-x 2 nagios nagios 69632 Mär 27 23:59 archives
-rw-r--r-- 1 nagios nagios 6 Mär 26 22:43 nagios.lock
-rw-rw-r-- 1 nagios nagios 257041 Mär 28 17:55 nagios.log
-rw-rw-r-- 1 nagios nagios 800315 Dez 22 2013 nagios.tmpF9wsQZ
-rw-r--r-- 1 nagios nagios 5 Mär 26 21:52 ndo2db.lock
-rw-r--r-- 1 nagios nagios 0 Mär 26 22:42 ndomod.tmp
srwxr-xr-x 1 nagios nagios 0 Mär 26 21:52 ndo.sock
-rw-r--r-- 1 nagios nagios 593633 Mär 26 22:43 objects.cache
-rw------- 1 nagios nagios 979561 Mär 28 17:44 retention.dat
drwxrwsr-x 2 nagios nagcmd 4096 Mär 26 22:44 rw
drwxr-xr-x 3 root root 4096 Dez 20 2013 spool
-rw-rw-r-- 1 nagios nagios 974973 Mär 28 17:56 status.dat
Code: Select all
nagios@XXX:~$ ls -la /usr/local/nagios/var/objects.cache
-rw-r--r-- 1 nagios nagios 593633 Mär 26 22:43 /usr/local/nagios/var/objects.cache
Is this what you are asking for?
Re: Nagios Service is working but Webinterface shows Error
Posted: Wed Mar 28, 2018 12:14 pm
by scottwilkerson
There is one permission change you should make
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chown nagios.nagios /usr/local/nagios
I don't believe that will fix it though, can you send the output of the following:
Re: Nagios Service is working but Webinterface shows Error
Posted: Wed Mar 28, 2018 1:58 pm
by ardstr
I made the premssion change on /usr/local/nagios, but it is still not working..
Code: Select all
nagios@XXXX:~$ ls -la /usr/local/
insgesamt 56
drwxr-xr-x 14 root root 4096 Aug 28 2014 .
drwxr-xr-x 11 root root 4096 Mai 21 2014 ..
drwxr-xr-x 2 root root 4096 Aug 28 2014 bin
drwxr-xr-x 2 root root 4096 Dez 20 2013 etc
drwxr-xr-x 2 root root 4096 Dez 20 2013 games
drwxr-xr-x 2 root root 4096 Dez 20 2013 include
drwxr-xr-x 5 root root 4096 Aug 26 2014 lib
lrwxrwxrwx 1 root root 9 Dez 20 2013 man -> share/man
drwxr-xr-x 9 nagios nagios 4096 Mai 21 2014 nagios
drwxr-xr-x 5 www-data www-data 4096 Aug 28 2014 nagvis
drwxrwxr-x 2 nagios nagios 4096 Aug 28 2014 nagvis_broken
drwxr-xr-x 2 root root 4096 Mai 21 2014 oracle
drwxr-xr-x 2 root root 4096 Dez 20 2013 sbin
drwxr-xr-x 7 root root 4096 Aug 26 2014 share
drwxr-xr-x 2 root root 4096 Dez 20 2013 src
Code: Select all
nagios@XXXX:~$ ps -ef
UID PID PPID C STIME TTY TIME CMD
root 1 0 0 Mär26 ? 00:00:01 /sbin/init
root 2 0 0 Mär26 ? 00:00:00 [kthreadd]
root 3 2 0 Mär26 ? 00:00:00 [ksoftirqd/0]
root 4 2 0 Mär26 ? 00:00:00 [kworker/0:0]
root 5 2 0 Mär26 ? 00:00:00 [kworker/0:0H]
root 7 2 0 Mär26 ? 00:00:25 [rcu_sched]
root 8 2 0 Mär26 ? 00:00:14 [rcuos/0]
root 9 2 0 Mär26 ? 00:00:15 [rcuos/1]
root 10 2 0 Mär26 ? 00:00:00 [rcu_bh]
root 11 2 0 Mär26 ? 00:00:00 [rcuob/0]
root 12 2 0 Mär26 ? 00:00:00 [rcuob/1]
root 13 2 0 Mär26 ? 00:00:02 [migration/0]
root 14 2 0 Mär26 ? 00:00:00 [watchdog/0]
root 15 2 0 Mär26 ? 00:00:00 [watchdog/1]
root 16 2 0 Mär26 ? 00:00:03 [migration/1]
root 17 2 0 Mär26 ? 00:00:00 [ksoftirqd/1]
root 19 2 0 Mär26 ? 00:00:00 [kworker/1:0H]
root 20 2 0 Mär26 ? 00:00:00 [khelper]
root 21 2 0 Mär26 ? 00:00:00 [kdevtmpfs]
root 22 2 0 Mär26 ? 00:00:00 [netns]
root 23 2 0 Mär26 ? 00:00:00 [writeback]
root 24 2 0 Mär26 ? 00:00:00 [kintegrityd]
root 25 2 0 Mär26 ? 00:00:00 [bioset]
root 26 2 0 Mär26 ? 00:00:00 [kworker/u5:0]
root 27 2 0 Mär26 ? 00:00:00 [kblockd]
root 28 2 0 Mär26 ? 00:00:00 [ata_sff]
root 29 2 0 Mär26 ? 00:00:00 [khubd]
root 30 2 0 Mär26 ? 00:00:00 [md]
root 31 2 0 Mär26 ? 00:00:00 [devfreq_wq]
root 32 2 0 Mär26 ? 00:00:05 [kworker/0:1]
root 34 2 0 Mär26 ? 00:00:00 [khungtaskd]
root 35 2 0 Mär26 ? 00:00:00 [kswapd0]
root 36 2 0 Mär26 ? 00:00:00 [ksmd]
root 37 2 0 Mär26 ? 00:00:01 [khugepaged]
root 38 2 0 Mär26 ? 00:00:00 [fsnotify_mark]
root 39 2 0 Mär26 ? 00:00:00 [ecryptfs-kthrea]
root 40 2 0 Mär26 ? 00:00:00 [crypto]
root 52 2 0 Mär26 ? 00:00:00 [kthrotld]
root 54 2 0 Mär26 ? 00:00:08 [kworker/1:1]
root 55 2 0 Mär26 ? 00:00:00 [scsi_eh_0]
root 56 2 0 Mär26 ? 00:00:00 [scsi_eh_1]
root 77 2 0 Mär26 ? 00:00:00 [deferwq]
root 78 2 0 Mär26 ? 00:00:00 [charger_manager]
root 127 2 0 Mär26 ? 00:00:00 [mpt_poll_0]
root 129 2 0 Mär26 ? 00:00:00 [kpsmoused]
root 130 2 0 Mär26 ? 00:00:00 [scsi_eh_2]
root 131 2 0 Mär26 ? 00:00:00 [mpt/0]
root 132 2 0 Mär26 ? 00:00:00 [scsi_eh_3]
root 133 2 0 Mär26 ? 00:00:00 [scsi_eh_4]
root 134 2 0 Mär26 ? 00:00:00 [scsi_eh_5]
root 135 2 0 Mär26 ? 00:00:00 [scsi_eh_6]
root 136 2 0 Mär26 ? 00:00:00 [scsi_eh_7]
root 137 2 0 Mär26 ? 00:00:00 [scsi_eh_8]
root 138 2 0 Mär26 ? 00:00:00 [scsi_eh_9]
root 139 2 0 Mär26 ? 00:00:00 [scsi_eh_10]
root 140 2 0 Mär26 ? 00:00:00 [scsi_eh_11]
root 141 2 0 Mär26 ? 00:00:00 [scsi_eh_12]
root 142 2 0 Mär26 ? 00:00:00 [scsi_eh_13]
root 143 2 0 Mär26 ? 00:00:00 [scsi_eh_14]
root 144 2 0 Mär26 ? 00:00:00 [scsi_eh_15]
root 145 2 0 Mär26 ? 00:00:00 [scsi_eh_16]
root 146 2 0 Mär26 ? 00:00:00 [scsi_eh_17]
root 147 2 0 Mär26 ? 00:00:00 [scsi_eh_18]
root 148 2 0 Mär26 ? 00:00:00 [scsi_eh_19]
root 149 2 0 Mär26 ? 00:00:00 [scsi_eh_20]
root 150 2 0 Mär26 ? 00:00:00 [scsi_eh_21]
root 151 2 0 Mär26 ? 00:00:00 [scsi_eh_22]
root 152 2 0 Mär26 ? 00:00:00 [scsi_eh_23]
root 153 2 0 Mär26 ? 00:00:00 [scsi_eh_24]
root 154 2 0 Mär26 ? 00:00:00 [scsi_eh_25]
root 155 2 0 Mär26 ? 00:00:00 [scsi_eh_26]
root 156 2 0 Mär26 ? 00:00:00 [scsi_eh_27]
root 157 2 0 Mär26 ? 00:00:00 [scsi_eh_28]
root 158 2 0 Mär26 ? 00:00:00 [scsi_eh_29]
root 159 2 0 Mär26 ? 00:00:00 [scsi_eh_30]
root 160 2 0 Mär26 ? 00:00:00 [scsi_eh_31]
root 189 2 0 Mär26 ? 00:00:00 [scsi_eh_32]
root 198 2 0 Mär26 ? 00:00:00 [kdmflush]
root 199 2 0 Mär26 ? 00:00:00 [bioset]
root 201 2 0 Mär26 ? 00:00:00 [kdmflush]
root 202 2 0 Mär26 ? 00:00:00 [bioset]
root 217 2 0 Mär26 ? 00:00:05 [jbd2/dm-0-8]
root 218 2 0 Mär26 ? 00:00:00 [ext4-rsv-conver]
root 351 1 0 Mär26 ? 00:00:00 upstart-udev-bridge --daemon
root 371 1 0 Mär26 ? 00:00:00 /lib/systemd/systemd-udevd --daemon
root 393 2 0 Mär26 ? 00:00:00 [ext4-rsv-conver]
root 434 2 0 Mär26 ? 00:00:00 [rpciod]
root 450 2 0 Mär26 ? 00:00:00 [nfsiod]
root 459 2 0 Mär26 ? 00:00:00 [ttm_swap]
message+ 460 1 0 Mär26 ? 00:00:00 dbus-daemon --system --fork
root 481 1 0 Mär26 ? 00:00:00 /lib/systemd/systemd-logind
root 483 1 0 Mär26 ? 00:00:00 rpc.idmapd
syslog 488 1 0 Mär26 ? 00:00:00 rsyslogd
root 496 1 0 Mär26 ? 00:00:00 upstart-file-bridge --daemon
root 702 1 0 Mär26 ? 00:00:00 rpcbind
statd 779 1 0 Mär26 ? 00:00:00 rpc.statd -L
root 888 1 0 Mär26 ? 00:00:00 upstart-socket-bridge --daemon
root 987 2 0 Mär26 ? 00:00:00 [kauditd]
root 1000 1 0 Mär26 tty4 00:00:00 /sbin/getty -8 38400 tty4
root 1004 1 0 Mär26 tty5 00:00:00 /sbin/getty -8 38400 tty5
root 1009 1 0 Mär26 tty2 00:00:00 /sbin/getty -8 38400 tty2
root 1010 1 0 Mär26 tty3 00:00:00 /sbin/getty -8 38400 tty3
root 1013 1 0 Mär26 tty6 00:00:00 /sbin/getty -8 38400 tty6
root 1029 1 0 Mär26 ? 00:00:00 cron
daemon 1034 1 0 Mär26 ? 00:00:00 atd
root 1043 1 0 Mär26 ? 00:00:00 /usr/sbin/sshd -D
root 1094 1 0 Mär26 ? 00:00:00 acpid -c /etc/acpi/events -s /var/run/acpid.socket
root 1114 1 0 Mär26 ? 00:00:12 /usr/sbin/irqbalance
mysql 1136 1 0 Mär26 ? 00:13:16 /usr/sbin/mysqld
Debian-+ 1380 1 0 Mär26 ? 00:00:00 /usr/sbin/exim4 -bd -q30m
whoopsie 1477 1 0 Mär26 ? 00:00:00 whoopsie
root 1479 2 0 12:21 ? 00:00:00 [kworker/u5:1]
root 1492 1 0 Mär26 ? 00:00:05 /usr/sbin/apache2 -k start
ntp 1882 1 0 Mär26 ? 00:00:08 /usr/sbin/ntpd -p /var/run/ntpd.pid -g -u 111:121
root 3251 2 0 17:49 ? 00:00:00 [kworker/u4:0]
www-data 5446 1492 0 18:00 ? 00:00:02 /usr/sbin/apache2 -k start
root 6793 1043 0 20:53 ? 00:00:00 sshd: nagios [priv]
nagios 6909 6793 0 20:53 ? 00:00:00 sshd: nagios@pts/0
nagios 6910 6909 0 20:53 pts/0 00:00:00 -bash
nagios 7354 1 0 20:55 ? 00:00:00 /usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg
nagios 7355 7354 0 20:55 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 7356 7354 0 20:55 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 7357 7354 0 20:55 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 7358 7354 0 20:55 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 7384 7354 0 20:56 ? 00:00:00 /usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg
nagios 7387 1 0 20:56 ? 00:00:00 /usr/local/nagios/bin/ndo2db -c /usr/local/nagios/etc/ndo2db.cfg
nagios 7549 7387 0 20:56 ? 00:00:00 /usr/local/nagios/bin/ndo2db -c /usr/local/nagios/etc/ndo2db.cfg
nagios 7550 7549 0 20:56 ? 00:00:00 /usr/local/nagios/bin/ndo2db -c /usr/local/nagios/etc/ndo2db.cfg
nagios 7555 6910 0 20:57 pts/0 00:00:00 ps -ef
root 8497 2 0 Mär26 ? 00:00:00 [kworker/1:0]
www-data 10754 1492 0 Mär27 ? 00:00:19 /usr/sbin/apache2 -k start
root 12366 1 0 Mär27 tty1 00:00:00 /sbin/getty -8 38400 tty1
www-data 14709 1492 0 Mär27 ? 00:00:25 /usr/sbin/apache2 -k start
www-data 14710 1492 0 Mär27 ? 00:00:24 /usr/sbin/apache2 -k start
www-data 14711 1492 0 Mär27 ? 00:00:25 /usr/sbin/apache2 -k start
www-data 14712 1492 0 Mär27 ? 00:00:24 /usr/sbin/apache2 -k start
www-data 14713 1492 0 Mär27 ? 00:00:25 /usr/sbin/apache2 -k start
www-data 14715 1492 0 Mär27 ? 00:00:24 /usr/sbin/apache2 -k start
www-data 14716 1492 0 Mär27 ? 00:00:24 /usr/sbin/apache2 -k start
www-data 15317 1492 0 Mär27 ? 00:00:26 /usr/sbin/apache2 -k start
root 31830 2 0 17:30 ? 00:00:00 [kworker/u4:1]
Re: Nagios Service is working but Webinterface shows Error
Posted: Wed Mar 28, 2018 2:48 pm
by scottwilkerson
one more permissions check
Re: Nagios Service is working but Webinterface shows Error
Posted: Wed Mar 28, 2018 3:07 pm
by ardstr
Code: Select all
nagios@XXXX:~$ ls -la /usr/local/nagios/var/rw
insgesamt 8
drwxrwsr-x 2 nagios nagcmd 4096 Mär 28 21:02 .
drwxrw-rw- 5 nagios nagios 4096 Mär 28 22:06 ..
prw-rw---- 1 nagios nagcmd 0 Mär 28 21:02 nagios.cmd
srw-rw---- 1 nagios nagcmd 0 Mär 28 21:00 nagios.qh
Here it is
Re: Nagios Service is working but Webinterface shows Error
Posted: Wed Mar 28, 2018 3:36 pm
by scottwilkerson
Has apache been restarted after adding the user to the groups?
Also have you watched the apache error log to see if the error is showing up when you access the page?