Understanding Clustercats Server Modes - MACROMEDIA COLDFUSION 5-ADVANCED ADMINISTRATION Manual

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Understanding ClusterCATS Server Modes

ClusterCATS allows you to move cluster members into various modes of operation
depending on the tasks you want to perform on that server. These modes allow you
to remove servers from clusters to perform maintenance activities without
disturbing the current traffic flow among other things.
The following table describes the various modes of operation that ClusterCATS
allows you to put cluster members into:
Mode
Active/Passive Setting
Restricted/Unrestricted
Setting
Maintenance Mode
Chapter 13 Maintaining Cluster Members
Description
Turns on and off the ClusterCATS Server. In Active state,
the ClusterCATS Server intercepts HTTP requests and
processes them for load balancing and availability. In
Passive state, all HTTP requests are passed directly to the
Web server without the ClusterCATS Server intercepting
them.
For more information on Activating/Deactivating
ClusterCATS Servers, refer to
Settings" on page 309.
Determines whether Active cluster members receive any
HTTP traffic. Restricted ClusterCATS Servers do not
receive any HTTP traffic. Unrestricted ClusterCATS
Servers are sent traffic as normal.
For more information on setting ClusterCATS Servers to
Restricted or Unrestricted mode, refer to
Restricted/Unrestricted Settings" on page
Allows you to gracefully remove a server from a cluster by
draining off all users without cutting connections. This is
typically used when you want to upgrade a server or
remove it entirely from the cluster.
For more information on putting clusters in and out of
Maintenance mode, refer to
(Windows only)" on page
Note that only Windows cluster members can be put in
Maintenance mode.
"Changing Active/Passive
"Changing
311.
"Using Maintenance Mode
313.