Subdomain for Nagios

Question

I have a subdomain forwarding at IP 192.0.2.1 (example.com) Lets call it nagios.example.com

Nagios worked at 192.0.2.1/nagios but now it's not working due to a fact that app.example.com took over default apache port (:80)

So how to solve my problem? :)

I have almost default nagios config in httpd vhost except i've added <VirtualHost *:80 > and ServerName.

<VirtualHost *:80>
    ServerName nagios.example.com

    ScriptAlias /nagios/cgi-bin "/usr/local/nagios/sbin"

    <Directory "/usr/local/nagios/sbin">
    #  SSLRequireSSL
       Options ExecCGI
       AllowOverride None
       Order allow,deny
       Allow from all
    #  Order deny,allow
    #  Deny from all
    #  Allow from 127.0.0.1
       AuthName "Nagios Access"
       AuthType Basic
       AuthUserFile /path/file
       Require valid-user
    </Directory>

    Alias /nagios "/usr/local/nagios/share"

    <Directory "/usr/local/nagios/share">
    #  SSLRequireSSL
       Options None
       AllowOverride None
       Order allow,deny
       Allow from all
    #  Order deny,allow
    #  Deny from all
    #  Allow from 127.0.0.1
       AuthName "Nagios Access"
       AuthType Basic
       AuthUserFile /path/file
       Require valid-user
    </Directory>
</VirtualHost>

PS: httpd -t -D DUMP_VHOSTS

    VirtualHost configuration:    

wildcard NameVirtualHosts and _default_ servers:
*:80                   is a NameVirtualHost
         default server domain-alias.example (/etc/httpd/conf.d/app.conf:1)
         port 80 namevhost domain-alias.example (/etc/httpd/conf.d/app.conf:1)
         port 80 namevhost nagios.example.com (/etc/httpd/conf.d/nagios.conf:8)
Syntax OK

Sorry for "domain-alias.example" but it's kind of private information :)

Answer 1

If you are using vhost internaly it is always better solution to make vhost configuration with different ports, so in this case you can setup nagios domain on 8083 port: first step: In httpd.conf you need to spicify listening ports:

Listen 8080
Listen 80
Listen 8083

In httpd-vhosts.conf add a NameVirtualHost for every virtual host you want to add.

NameVirtualHost *:80
NameVirtualHost *:8080
NameVirtualHost *:8083

Adopt your documetn root to requested ports and that's it.

After restarting the srevice you can check if ports are open and which app use the same with:

netstat -tlnp

Answer 2

Change your port to VirtualHost *:8080 or 81.

see if that works. I had a similar issue with a conflict on my apache server at work and i changed the virtualHost to port 8080 and now everything is runnning fine.