Hi there,

 

We've installed a MySQL NDB Cluster which is running fine.

There are two Cisco CSM loadbalacer which shall distribute the workload over 
the query nodes.

The loadbalancers also are doing TCP probes to the MySQL Ports (3306) on both 
querynodes.

 

Each such probe generates a session in the querynode. 

The probes are done every 20 seconds so that we get 180 new sessions per hour.

After some time there are no new connections possible to MySQL - ERROR 1040 
(00000): Too many connections

 

Any idea how to fix this problem?

Maybe a parameter to disconnect idle sessions after some time or similar?

Or another way to probe MySQL?

 

Thanks

Günter

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