We are going to be building out a new hardware environment for NagiosXI. They will be changing the host name for the server to conform to new naming standards. Will this create any problems for NagiosXI as long as the IP address remains the same?
Thanks,
Greg
New Environment
Re: New Environment
If you'll also be changing Linux distros (or updating, for instance Cent 7 => Cent 8), then it's an unknown. Here's a list of things I've seen happen in recent memory when people migrate to a new server:
- The OS has a policy in place that prevents OpenSSL from using DH ciphers, which in turn prevents communication with NSClient++ - see here for tips/workaround
- SELinux comes enabled on the server, which causes Nagios XI to just plain not work - please disable SELinux.
- The network is suddenly IPv6-enabled and the IPv6 address needs to be whitelisted in the agent configs (NRPE, NCPA, xinetd) - please update the config to include the IPv6 address. This really only applies if the check is using the FQDN instead of the IP and the DNS has an AAAA record.
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