Friday, June 20, 2014

Proper way of configuring health monitor on LB against Directory Servers

We have an issue with Sun Directory Proxy Server (DPS) recently. The IDLE connections kept building up and we needed to bounce the DPS once in a while. This is to prevent the server from running out of file descriptors.

It took us quite a while to identify what has gone wrong. The F5 load-balancer was wrongly configured by customer's system administrators.

For any enterprise load-balancer, there should be a monitor for LDAP servers. One should not use the standard TCP health check to validate the health of LDAP servers.

We found 2 good articles:

  1. Best Practices for LDAP Monitoring 
  2. F5 Load Balancers and Sun Directory Servers

Great stuff!


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