Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Nagios passive checks

Posted on 2014-11-15
4
Medium Priority
?
219 Views
Last Modified: 2014-11-16
I'm looking for a solution to monitor a few servers in a quite unique configuration, using Nagios:

There are 5 hosts that need to be monitored.
All of the hosts can communicate between themselves, but only one of them (let's call it the proxy host)
is accessible by Nagios.

Basically what I need is a way to monitor these hosts by using the "proxy host" (the one that is accessible by Nagios).

I've read about passive checks, but I didn't find a way to implement it for this scenario.

Any help will be appreciated.

Thanks!
0
Comment
Question by:mariusk
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
4 Comments
 
LVL 79

Expert Comment

by:arnold
ID: 40445696
you need to install a nagios instance on the proxy server that will monitor them and report back to the main one.
For clarity: Presumably opening firewall routes/paths to allow main nagios to query/access these systems is out of the question.

main instance  <=>  nagios in restricted area <=> restricted are servers
Pasive checks <=> active checker

depending on the types of checks you need, configuring the proxy as a reverse proxy for ports that are then mapped to the restricted host/port....
0
 

Author Comment

by:mariusk
ID: 40445733
So a full Nagios installation is needed in the restricted area ?
Nothing else available, like a "Nagios proxy" ?

Thanks.
0
 
LVL 79

Accepted Solution

by:
arnold earned 2000 total points
ID: 40445871
The secondary setup instance is the only way. The proxy setup would require you to open paths that are restricted by the existing firewall effectively exposing the internal/restricted system to a possible mistake.
Since you are planing on using the existing proxy (presumably reverse proxy) that is currently being accessed .........

The two instances let you test external (from the main) while testing internal portions using the second internal instance.
0
 
LVL 79

Expert Comment

by:arnold
ID: 40445873
It also depends on what it is you are monitoring.

If the restricted systems can use traps to send to the main nagios server, those trap can be used as passive checks. ......
0

Featured Post

A new era in Cloud training has arrived.

A day that will go down in Cloud history.. But are you ready for it? Will you accept this Cloud challenge?

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In the first part of this tutorial we will cover the prerequisites for installing SQL Server vNext on Linux.
In part one, we reviewed the prerequisites required for installing SQL Server vNext. In this part we will explore how to install Microsoft's SQL Server on Ubuntu 16.04.
Learn several ways to interact with files and get file information from the bash shell. ls lists the contents of a directory: Using the -a flag displays hidden files: Using the -l flag formats the output in a long list: The file command gives us mor…
This demo shows you how to set up the containerized NetScaler CPX with NetScaler Management and Analytics System in a non-routable Mesos/Marathon environment for use with Micro-Services applications.
Suggested Courses

715 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question