This host-level alert is triggered if the RegionServer processes cannot be confirmed
to be up and listening on the network for the configured critical threshold, given in
seconds. It uses the Nagios check_tcp plugin.
The RegionServer process is down on the host
The RegionServer process is up and running but not listening on the correct network port (default 60030).
The Nagios server cannot connect to the RegionServer through the network.
Check for any errors in the logs (
/var/log/hbase/) and restart the RegionServer process using Ambari Web.Run the
netstat-tuplpncommand to check if the RegionServer process is bound to the correct network port.Use
pingto check the network connection between the Nagios Server and the RegionServer.
