Need information regarding new installation of nagios Xi

[ravish78]

Hi Team,

We have nagiosxi setup in our production servers. Some servers are with RHEL5 and some are with RHEL 6.

We want to upgrade servers with RHEL 5 to RHEL6 and so curious to find if nagiosxi needs to be installed from scratch if we need to upgrade OS.

We have around 300+ servers monitored in this nagios server.

Thanks
Ravi Yendada

[abrist]

Upgrading the underlying OS has not been thoroughly tested, so there is no guarantee that it would work. The biggest issues will be with packages - but these can usually be solved. My suggestion is to snapshot or clone the vm and try the upgrade in a test environment first.

[ravish78]

We are going with fresh installs from RHEL5 to RHEL 6. So OS is not a problem now.

From NAGIOS XI application end, can we import and restore everything from nagios application (db, application configs,plugins,components, user accounts etc) to the new box?

[sreinhardt]

Yes you can, just use the backup and restore scripts. There is a tiny bit of work that needs to be done post restore that is at the bottom of this document:

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

[ravish78]

Thanks for the update.

Is there any way to migrate all user account. We have 200+ user accounts and do not want to create manually again .


Also is it possible to migrate all historical database from current environment to new one.

[slansing]

When you back up and restore you will also be backing up and restoring the databases, including the postgresql database that houses user information.

[ravish78]

We will try that out and get back if needed.

Last question.

We are planning to have new servers with upgraded OS from RHEL 5 to RHEL 6 to suit two other servers.
We currently have 300 hosts and 2700 services configured.It may reach another 200 servers in near future.
Do you suggest any hardware requirements for the servers (RAM,HDD,Processor) to support monitoring for 500 server and which can sustain load.

Currently we have

8gb ram
4 cpu
250 gb hdd

[slansing]

The specs that were listed above look adequate. How many cores per processor?

[ravish78]

I think dual cores

[sreinhardt]

So 8 total cores and 8gb ram, I don't foresee that as an issue, as always more ram is a good thing but you should be ok.