Nagios Support Forum

You can close this as resolved. THANKS!

Hi all, I have nagios XI server monitoring window hosts and linx hosts. I had to change the static IP address of my Nagios server due to an internal infrastructure migration. I have many windows servers now with errror: "could not fetch information from server". What is the best way for me...

ESX3 CRITICAL - Can't use an undefined value as an ARRAY reference at /usr/local/nagios/libexec/check_esx3.pl line 872.

All my ESX hosts have this error for service "Networking for VMHost"

Thanks for the explanation. You can close this as resolved. THANKS!!!!!

@ npolovenko Thank you very much.
It fixed the issue.
Can you please explain what caused the issue and
what did the both commands do it resolve it.

Thank you very much again.

-Anoop.

HI all, Database back end is not running on my nagiosXI. My nagiosxi GUI looks fine, its still monitoring everything. [root@localhost /]# service ndo2b status Redirecting to /bin/systemctl status ndo2b.service Unit ndo2b.service could not be found. [root@localhost /]# service ndo2b start Redirecting...

Not to push you away, but configuring a mail server is outside the scope of what we support here, and is not something generally speaking that should be attempted by someone brand new to Linux. Is there a Linux admin in your organization who could take a look at this thread and help get that set up...

Thanks for the responses. This is my first time working with Linux, nagios and email servers. Setting up mail server is pretty confusing to me. Can some one please take some time and explain patiently please. My main idea is to setup mail server and send it to my official email. it is some thing lik...

HI @ dwasswa I was trying to follow this link: http://www.telnetport25.com/2012/02/configuring-e-mail-notifications-in-nagios-core/. As it was in ubuntu, and my server is on centos, I did yum install postfix. But that didn't take me to the next step of choosing "what type of POSTFIX SMTP Server...

Can someone share videos/official documentation on how to configure email notifications for nagios core.
My nagios server is on centos 7. Please let me know if you need any more details.
When i am reading about this, i see people talking about send mail and post fix. Which one should i choose?