Cluster Solution Availability Limits

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roxy
Posts: 25
Joined: Sun Feb 21, 2016 10:34 am

Cluster Solution Availability Limits

Post by roxy » Tue Mar 01, 2016 2:17 pm

The Cluster is a big solution to allow scalability, but not to have availability. What about availability if Cluster Controller is down for failure or for maintenance ?

thisjun
Posts: 2458
Joined: Mon Feb 24, 2014 11:03 am

Re: Cluster Solution Availability Limits

Post by thisjun » Wed Mar 30, 2016 7:20 am

You can prepare secondary controller sever.
For switching these servers, you can use external redundant service.

roxy
Posts: 25
Joined: Sun Feb 21, 2016 10:34 am

Re: Cluster Solution Availability Limits

Post by roxy » Thu Mar 31, 2016 6:07 am

Secondary controller sever share configuration with Primary Controller Server ? If not this solution is not applicable in production, as one must have 2 parallel configurations to maintain and at failover time many inconsistency an problems can arise.

thisjun
Posts: 2458
Joined: Mon Feb 24, 2014 11:03 am

Re: Cluster Solution Availability Limits

Post by thisjun » Wed Apr 20, 2016 7:38 am

You can synchronize a configuration file by some batch.

roxy
Posts: 25
Joined: Sun Feb 21, 2016 10:34 am

Re: Cluster Solution Availability Limits

Post by roxy » Tue May 24, 2016 10:58 am

Do you mean an Active/Passive cluster configuration ? In an Active/Active cluster configuration with failover on the remaining nodes cannot be active the same configuration file on different nodes. Each node has its own configuration and know other node configuration to take place for failed nodes at failover time. This can be a robust cluster solution without have unused resources.

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