Server clusters - for Load Balancing and Failover
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If you want to use OctaGate Switch™ Load Balancing (only available in OctaGate Switch™ Enterprise Edition), you will need to define one more more Server Clusters. A server cluster is a set of clusters that together will be responsible for handling requests.

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Create New Cluster
Will create a new cluster and let you edit it.

On/Off
Indicates whether the server cluster is enabled or not. Clicking the light will toggle on/off. Disabling a server cluster will stop all domains / virtual paths that rely on it.

Online
OctaGate Switch™ will periodically connect to all servers in a cluster to determine if the server is online. If a server can't be reached, it will be flagged as offline and OctaGate Switch™ will instead connect incoming requests to the servers that are still running. The online flag on the server cluster is green if there are servers in the cluster that are online and enabled, it's read when there are no servers that are online and enabled. If the cluster is disabled, the Online LED is grayed.

Server Cluster

The name of the server cluster. This name is purely for your convenience, and it's not used by the server.

Server Count
Indicates the number of servers that are part of the cluster. 0 indicates that there are no servers at all, which explains why the server cluster called "Empty cluster" above is considered to be offline.

Edit
Click on Edit to edit the selected Server Cluster. This describes editing the server cluster.

Remove
Click on Remove to delete the entire server cluster. Deleting a server cluster will stop all domains / virtual paths that rely on it.

See here
for more info.