Why piranha load balancer is not sending traffic to real servers ?

Solution Verified - Updated -

Issue

  • Had performed # yum update on piranha active load balancing server (load balancing the traffic for zimbra email service). After reboot the server is unable to sent pop3 request to proxy servers which are real servers.
  • ipvsadm -L output shows no active connection.
[...]
FWM  110 wlc persistent 3600
  -> proxy101.example:pop3      Masq    1      0          0
  -> proxy2.example:pop3        Masq    10000  0          0
  -> proxy1.example:pop3        Masq    10000  0          0
[...]

Environment

  • Red Hat Enterprise Linux 6.x
  • Piranha Load Balanacer

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