Where to start!?

[rkennedy]

root@nagios:/tmp/nagios-4.0.4# sudo service apache2 start
* Starting web server apache2 apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1 for ServerName
(98)Address already in use: make_sock: could not bind to address 0.0.0.0:80
no listening sockets available, shutting down
Unable to open logs
Action 'start' failed.
The Apache error log may have more information.

You will need to stop tomcat before starting apache2 as they are both trying to use port 80.

[trafalgargirl]

Its up and running

I see there is an update available - from 4.0.4 to 4.1.1 - is there a way to do this right from the command line?

[hsmith]

These instructions are for CentOS, but the general idea should still apply: http://www.box293.com/guides/upgrading- ... centos-6-x

[trafalgargirl]

Thank you that worked great!

So now the really hard part

How do I start the configuration of monitoring something? Which documentation should I move to now?

Thanks

[bwallace]

https://assets.nagios.com/downloads/nag ... n/toc.html

Seems appropriate to start at "Advice for Beginners"....

I wish I knew of this flowchart of all the related config files when I started...
http://www.the-tech-tutorial.com/wp-con ... config.png

....that flowchart stems from this helpful tutorial:
http://www.the-tech-tutorial.com/adding ... to-nagios/

-- hope this helps --

[trafalgargirl]

Thank you! I am going to go through those and hopefully be able to add a client!

Really dumb question... is there something I need to install on the host I want to monitor to be able to do this?

Thanks

[rkennedy]

Thank you! I am going to go through those and hopefully be able to add a client!

Really dumb question... is there something I need to install on the host I want to monitor to be able to do this?

Thanks

To confirm, did you also install / compile the Nagios Plugins (on the Nagios machine)?

No question is dumb! We're here to help. What type of check are you trying to monitor on the client machine? Some checks will require an agent installed on the client machine, where others (such as ping, check_http, etc) can check external services.

[trafalgargirl]

Hi there

Yes I did install / compile nagios the plugins.

The checks we would like to do right now are CPU, Memory, Current Load, Disk Space, Swap Usage, Total Processes etc. just the basics really.

Is it possible to change the location of nagios to have it at the root? IE: nagios.domain-name.com instead of nagios.domain-name.com/nagios?

thanks

[rkennedy]

Are you looking to check a windows host, or a linux host?
- Windows will use NSClient++, with check_nrpe - https://assets.nagios.com/downloads/nag ... ios-XI.pdf
- Linux will use NRPE - https://assets.nagios.com/downloads/nag ... ios-XI.pdf

Yes, you would just need to modify the apache vhost configuration to have to not use /nagios/. From there, you should be able to just point the DNS of nagios.domain.com to your servers IP.

[trafalgargirl]

All of our servers that we would monitor are linux bases. There might be one internal windows server but right now that is not high priority. The high priority ones are the client servers.

I have already set up nagios.domainname.com - just wanted to remove the /nagios to make things cleaner.