This page can’t be displayed

[ttung888]

I have the NagiosXI installed and up running for a while. today I received some alerts from it as below and I am sure vpn.iac.com is up. then I checked the http://192.168.241.92/nagios was not loaded with error "This page can’t be displayed". also I made sure that the disk has enough free space, both httpd and nagios service are started. please help!

Thanks

Tsai

***** Nagios XI Alert *****

Nagios has detected a problem with this host.

Notification Type: PROBLEM
Host: vpn.iac.com
State: DOWN
Address: vpn.iac.com
Info: HTTP CRITICAL - No data received from host
Date/Time: 2015-10-14 09:47:13

Respond: http://192.168.241.92/nagiosxi//rr.php? ... ac11c8eb3b
Nagios URL: http://192.168.241.92/nagiosxi/

[rkennedy]

In your post I noticed you are trying to use http://192.168.241.92/nagios, can you check that http://192.168.241.92/nagiosxi/ does not work either?

Please run netstat -anp|grep :80 and tail /var/log/httpd/error_log -n 100.

Post the results of both commands.

[ttung888]

did not work either.

[root@Nagiosxi-la ~]# netstat -anp|grep :80
tcp 0 0 127.0.0.1:8022 0.0.0.0:* LIST EN 1463/python
tcp 0 0 :::80 :::* LIST EN 1438/httpd
tcp 0 0 ::ffff:127.0.0.1:80 ::ffff:127.0.0.1:44668 TIME _WAIT -
tcp 0 0 ::1:58231 ::1:80 TIME _WAIT -
tcp 0 0 ::1:58211 ::1:80 TIME _WAIT -
tcp 0 0 ::1:58223 ::1:80 TIME _WAIT -

root@Nagiosxi-la ~]# tail /var/log/httpd/error_log -n 100
[Sun Oct 11 03:35:02 2015] [notice] Digest: generating secret for digest authentication ...
[Sun Oct 11 03:35:02 2015] [notice] Digest: done
[Sun Oct 11 03:35:02 2015] [notice] Apache/2.2.15 (Unix) DAV/2 PHP/5.3.3 mod_ssl/2.2.15 OpenSSL/1.0.0-fips configured -- resuming normal operations
[Wed Oct 14 08:25:33 2015] [error] [client 192.168.128.53] PHP Notice: Undefined variable: service in /usr/local/nagiosxi/html/rr.php on line 73
[Wed Oct 14 08:34:46 2015] [notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[Wed Oct 14 08:34:46 2015] [notice] Digest: generating secret for digest authentication ...
[Wed Oct 14 08:34:46 2015] [notice] Digest: done
[Wed Oct 14 08:34:47 2015] [notice] Apache/2.2.15 (Unix) DAV/2 PHP/5.3.3 mod_ssl/2.2.15 OpenSSL/1.0.0-fips configured -- resuming normal operations
[Wed Oct 14 08:56:10 2015] [error] [client 192.168.128.53] PHP Notice: Undefined variable: service in /usr/local/nagiosxi/html/rr.php on line 73
[Wed Oct 14 09:30:18 2015] [notice] caught SIGTERM, shutting down
[Wed Oct 14 09:30:18 2015] [notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[Wed Oct 14 09:30:18 2015] [notice] Digest: generating secret for digest authentication ...
[Wed Oct 14 09:30:18 2015] [notice] Digest: done
[Wed Oct 14 09:30:18 2015] [notice] Apache/2.2.15 (Unix) DAV/2 PHP/5.3.3 mod_ssl/2.2.15 OpenSSL/1.0.0-fips configured -- resuming normal operations
[Wed Oct 14 09:42:50 2015] [notice] caught SIGTERM, shutting down
[Wed Oct 14 09:43:20 2015] [notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[Wed Oct 14 09:43:20 2015] [notice] Digest: generating secret for digest authentication ...
[Wed Oct 14 09:43:20 2015] [notice] Digest: done
[Wed Oct 14 09:43:22 2015] [notice] Apache/2.2.15 (Unix) DAV/2 PHP/5.3.3 mod_ssl/2.2.15 OpenSSL/1.0.0-fips configured -- resuming normal operations
[Wed Oct 14 10:57:46 2015] [error] [client 192.168.128.53] PHP Notice: Undefined variable: service in /usr/local/nagiosxi/html/rr.php on line 73
[Wed Oct 14 11:24:00 2015] [notice] caught SIGTERM, shutting down
[Wed Oct 14 11:24:36 2015] [notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[Wed Oct 14 11:24:36 2015] [notice] Digest: generating secret for digest authentication ...
[Wed Oct 14 11:24:36 2015] [notice] Digest: done
[Wed Oct 14 11:24:38 2015] [notice] Apache/2.2.15 (Unix) DAV/2 PHP/5.3.3 mod_ssl/2.2.15 OpenSSL/1.0.0-fips configured -- resuming normal operations


thanks

Tsai

[rkennedy]

Your netstat, and error_log look fine.

Are you behind a corporate proxy at all? Are you monitoring vpn.iac.com on an internal IP or external IP?

Can you please post the result of ifconfig from the Nagios machine. Also, please post the result of a tracert 192.168.241.92 from your machine.

[ttung888]

It turns out that was a network connectivity issue. The manage web is loaded.

thanks for your help.

Tsai

[rkennedy]

You're welcome. Glad to see it's loading now! Feel free to open another thread if you need more assistance.