| Using ClusterCATS |
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Maintaining Cluster Members |
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| Using ClusterCATS |
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Maintaining Cluster Members |
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ClusterCATS lets you move cluster members into modes of operation depending on the tasks you want to perform on their server. The modes let you remove servers from clusters to perform maintenance activities without disturbing the current traffic flow, among other things.
The following table describes the modes of operation into which you can place cluster members:
| Mode |
Description |
|---|---|
| Active/Passive Setting |
Turns the ClusterCATS Server on and off. In active state, the ClusterCATS Server intercepts HTTP requests and processes them for load balancing and availability. In passive state, HTTP requests are passed directly to the web server without ClusterCATS Server interception. For more information, see "Changing active/passive settings". |
| Restricted/Unrestricted Setting |
Determines whether active cluster members receive HTTP traffic. Restricted ClusterCATS Servers do not receive HTTP traffic. Unrestricted ClusterCATS Servers are sent traffic. For more information, see "Changing restricted/unrestricted settings". |
| Maintenance Mode |
Lets you remove a server from a cluster by draining off all users without cutting connections. You use this when you want to upgrade a server or remove it entirely from a cluster. For more information, see "Using maintenance mode (Windows only)". Only Windows cluster members can be put in Maintenance mode. |