I have single master with a set of clients. For security reasons, direction of connection is always client to server [ server does not connect to client ]. Also all checks runs on clients ( command_endpoint ).
I wanted to add HA for monitoring. I added a second node to master zone & updated zones.conf etc etc. All was okay, except few clients which were behind firewall. firewall was not open to the second master for these clients. all these clients were reported as down and checks were not getting executed ( due to dependency ). While searching the forums i came across a post that states both master must be always available. Is icinga HA is actually only a cluster to distribute load ? Does it not provide High availability function ? ( monitoring works with only one master when other is down )