Nagios Support Forum

Posted: **Mon Dec 07, 2015 2:06 pm**

as i'm somehow new in linux, and i'm required to install a monitoring system to our company using CentOS7 with LAMP & the monitoring Application NAGIOS.

after installation everything goes well, until the installation of the TeamViewer then the nagios stopped and other issues happened thus this quesion(s) comes up.

1- apache service is confirmed running by

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service httpd status

the following was the result

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httpd.service - The Apache HTTP Server
   Loaded: loaded (/usr/lib/systemd/system/httpd.service; disabled)
   Active: active (running) since Sun 2015-12-06 22:29:35 EET; 9h ago
  Process: 27173 ExecStop=/bin/kill -WINCH ${MAINPID} (code=exited, status=0/SUCCESS)
  Process: 3015 ExecReload=/usr/sbin/httpd $OPTIONS -k graceful (code=exited, status=0/SUCCESS)
  Main PID: 27179 (httpd)
   Status: "Total requests: 0; Current requests/sec: 0; Current traffic:   0 B/sec"
   CGroup: /system.slice/httpd.service
           ├─ 3032 /usr/sbin/httpd -DFOREGROUND
           ├─ 3033 /usr/sbin/httpd -DFOREGROUND
           ├─ 3034 /usr/sbin/httpd -DFOREGROUND
           ├─ 3035 /usr/sbin/httpd -DFOREGROUND
           ├─ 3036 /usr/sbin/httpd -DFOREGROUND
           └─27179 /usr/sbin/httpd -DFOREGROUND

but when trying to access the server http://192.168.1.7 there is no page to load ???

2- for Nagios, when checking the status it is running normally similar to the apache step, but when accessing the web http://192.168.1.7/nagios not webpage page to load ????

3- how to confirm that the apache and the nagios are autorun as a service after the server reboots?

Posted: **Mon Dec 07, 2015 2:11 pm**

How did you install Nagios?

Source? Repo? Guide? If so, please link it.

It was working until you installed TeamViewer? Can you please go into more depth regarding this?

h.sabrey wrote:2- for Nagios, when checking the status it is running normally similar to the apache step, but when accessing the web http://192.168.1.7/nagios not webpage page to load ????

Is there a firewall running on your server?

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systemctl status firewalld

h.sabrey wrote:how to confirm that the apache and the nagios are autorun as a service after the server reboots?

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systemctl is-enabled httpd
systemctl is-enabled nagios

Posted: **Tue Dec 08, 2015 3:46 am**

Nagios installation guide
https://www.youtube.com/watch?v=hQeVkapSaqM

firewall status :

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systemctl status firewalld
         firewalld.service - firewalld - dynamic firewall daemon
             Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled)
            Active: active (running) since Wed 2015-11-04 12:57:22 EET; 1 months 3 days ago
         Main PID: 692 (firewalld)
         CGroup: /system.slice/firewalld.service
                      └─692 /usr/bin/python -Es /usr/sbin/firewalld --nofork --nopid

for confirmation :

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$ system is-enabled httpd
bash: system: command not found...
[sysadmin@nagos-server ~]$ systemctl is-enabled httpd
disabled

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$ systemctl is-enabled nagios
nagios.service is not a native service, redirecting to /sbin/chkconfig.
Executing /sbin/chkconfig nagios --level=5
enabled

Posted: **Tue Dec 08, 2015 9:41 am**

your apache isn't running.

/etc/init.d/apache start (it might be /etc/init.d/httpd start...not overly familiar with CentOS)

Posted: **Tue Dec 08, 2015 10:17 am**

mleo40 wrote:/etc/init.d/apache start (it might be /etc/init.d/httpd start...not overly familiar with CentOS)

it's httpd

service httpd status will tell you whether or not it is running as well.

Posted: **Tue Dec 08, 2015 1:39 pm**

friends,

for now i've added the httpd to the systemctl auto run by

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# systemctl enable httpd.service

but still not able to connect to nagios web portal

BTW i'm receiving emails from nagios as notification of one device which is not in my network ????

Posted: **Tue Dec 08, 2015 1:45 pm**

that command only enables the service at boot time, it doesn't actually start it

try systemctl start httpd.service

Posted: **Tue Dec 08, 2015 1:46 pm**

Can you post the output of the following command -

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netstat -anp|grep :80

Posted: **Tue Dec 08, 2015 1:59 pm**

[

rkennedy wrote:Can you post the output of the following command -
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netstat -anp|grep :80

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# netstat -anp|grep :80
tcp6       0      0 :::80                   :::*                    LISTEN      3032/httpd

Posted: **Tue Dec 08, 2015 2:02 pm**

Working output:

# netstat -anp|grep :80
tcp 0 0 :::80 :::* LISTEN 13150/httpd

your machine is only listening on ipv6 ... ? That is strange

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