Guide for installing 4.0.7 on Ubuntu 14.04

[shaunie1975]

Hi Guys,

Is there a easy to follow guide for installing Nagios Core 4.0.7 on Ubuntu 14.04?
When I installed Ubuntu I opted to install LAMP at the same time.

I then ran update and upgrade a few times and a system reboot.

However when I get to the make install-webconf I get the below error:

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root@ubuntu:/tmp/nagios-4.0.7# make install-webconf
/usr/bin/install -c -m 644 sample-config/httpd.conf /etc/httpd/conf.d/nagios.conf
/usr/bin/install: cannot create regular file â/etc/httpd/conf.d/nagios.confâ: No such file or directory
make: *** [install-webconf] Error 1

From initial searches its something to do with Nagios using an older version of Apache2 where the directory structure is different.

I am no expert with nagios or Linux so please be gentle if you can help.

Thanks
Shaun

[shaunie1975]

Ok so I got passed that part by creating the missing directories.

Now installed the plugins but when it comes to the chkconfig
I get an error that the command is not recognised. Has this been removed from 14.04?
Can I install it?

[slansing]

Hi Shaunie, what guide are you using to install Core and the plugins? I'd recommend this one:

http://assets.nagios.com/downloads/nagi ... Source.pdf

[shaunie1975]

Hi Slansing,

That is the guide I'm using however I'm installing 4.0.7 and pluggin 2.0.3
On Ubuntu 14.04 server.

Thanks

[shaunie1975]

Ok So I got around the chkconfig error by installing:
sysv-rc-conf

restarted apache2 and even the whole server. Now when I try an goto http://<serverip>/nagios i get page not found

[slansing]

Hmm, looks like apache may not be running, what is the output of:

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/etc/init.d/apache2 status

/etc/init.d/apache2 stop

/etc/init.d/apache2 start

When you browse to just:

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http://addr.of.server/

Does it show the apache splash page?

[shaunie1975]

Hi Slansing,

Here is the ouput:

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eto@ubuntu:~$ /etc/init.d/apache2 status
 * apache2 is running

eto@ubuntu:~$ /etc/init.d/apache2 stop
 * Stopping web server apache2                                                   *
eto@ubuntu:~$

eto@ubuntu:~$ /etc/init.d/apache2 start
 * Starting web server apache2                                                   *
eto@ubuntu:~$

Browsing to http://<address of server> lans me on the 'Apache2 Ubuntu Default Page'

When I look in /var/www/ the only folder there is html which has the index.html file, I believe this just the default apache2 page?

Thanks

[tmcdonald]

Ubuntu has a different directory structure than RHEL or CentOS.

Ok so I got passed that part by creating the missing directories.

Can you post or PM the httpd nagios conf file that should be present in that directory? Apache probably does not know where it is so it cannot load the Nagios webpage.

Ubuntu uses /etc/apache2 and RHEL/CentOS use /etc/httpd so you may have to copy over some files.

[emislivec]

Browsing to http://<address of server> lans me on the 'Apache2 Ubuntu Default Page'

When I look in /var/www/ the only folder there is html which has the index.html file, I believe this just the default apache2 page?

That is the default splash page, so we know Apache is up and serving pages. I think the problem comes down to the earlier installation error:

However when I get to the make install-webconf I get the below error:

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root@ubuntu:/tmp/nagios-4.0.7# make install-webconf
/usr/bin/install -c -m 644 sample-config/httpd.conf /etc/httpd/conf.d/nagios.conf
/usr/bin/install: cannot create regular file â/etc/httpd/conf.d/nagios.confâ: No such file or directory
make: *** [install-webconf] Error 1

On Debian or Ubuntu it should be "/etc/apache2/conf.d/nagios.conf" instead of "/etc/httpd/conf.d/nagios.conf". When you created the "/etc/httpd/conf.d/" it let the "make install-webconf" complete successfully, but Apache doesn't know anything about that directory or file.

We can tell ./configure where to install nagios.conf so apache will see it: add "--with-httpd-conf=/etc/apache2/conf.d/nagios.conf" to the end of the ./configure command you ran earlier. For example:

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./configure --with-command-group=nagcmd --with-httpd-conf=/etc/apache2/conf.d

Then make and install like before.

[shaunie1975]

Hi Guys,

So I have got the http://serverip/nagios page to load.

I ran the ./configure as

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./configure --with-command-group=nagcmd --with-httpd-conf=/etc/apache2/conf.d

which didnt work so then I ran it as

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./configure --with-command-group=nagcmd --with-httpd-conf=/etc/apache2

Which still didnt work. I then added the contents of

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/etc/apache2/nagios.conf

to the end of

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/etc/apache2/apache2.conf

Now when I login I see the nagios core and the logo then below that i see a red X and not running next to it.

Thanks