No nodes available

That would be due to a BIG-IP monitor not getting a successful response back from the servers within the timeout period. You can check the /var/log/ltm log file for additional info. If you need more detail on the monitoring requests and responses, you can enable debug logging for the monitoring daemon, bigd, using:

 

 

b db Bigd.Debug "enable"

 

 

By default, the logging is written to /var/log/bigdlog.

 

 

You may find that your interval and timeout aren't set optimally. Normally, the interval should be greater than 5 seconds. The timeout should be set to 3 x interval + 1 second. The default interval / timeout are 5 / 31.

 

 

Aaron

We are getting the following messages on some of our F5's

 

Any reason, why the F5 would be seeing these servers as down??

 

 

VIP_UNAVAILABLE :: NJ2 kernel: No nodes available for vip 216.74.138.233:81