Removing a real server with ipvsadm utility does not remove it from Piranha configuration in RHEL

Issue

• The system administrator wishes to remove one of three real servers from a Piranha Linux Virtual Server (LVS) load balancing cluster to perform maintenance on it.

• The system administrator is using ipvsadm -d to remove the real server

• Example ipvsadm command output

  • List of real servers before removing one

# ipvsadm -l
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  virtualserver.local:http wlc persistent 32400
  -> realserver1.local:http    Route   1      0          0         
  -> realserver2.local:http    Route   1      0          0         
  -> realserver3.local:http    Local   1      0          0  

• Real server 2 removed

# ipvsadm -d -t virtualserver.local:http -r realserver2.local

• List of real servers after removal

 # ipvsadm -l
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  virtualserver.local:http wlc persistent 32400
  -> realserver1.local:http    Route   1      0          0         
  -> realserver3.local:http    Local   1      0          0  

• Real server 2 is removed from the LVS cluster correctly, but piranha does not stop the nanny monitor process for this real server