7. Configure the server instance using the following parameters:
Note
- For servers in Layer 7 HTTPS clusters, set the probe port to something other than 443, since Equalizer
communicates with the servers via HTTP. In many configurations, it is set to the server port. The server agent port, set
on the cluster, remains a separate port that is used only for server agent communication.)
Initial Weight
An number between 0 and 200 that indicates a server’s processing power
relative to the other servers in a cluster. The default is 100. A value of 0
disables the server (no traffic will be routed to the server). For information
about selecting an appropriate initial weight, refer to
Maximum Connections
Sets the maximum number of permitted open connections for the server.
Once this limit is reached, no more traffic is routed to the server until the
number of open connections falls below this limit. This limit is set by
default to 0, which means that there is no maximum connections limit on
the server.
Probe Port
By default, the server probe port field is set to zero and the Equalizer uses
the server’s port field value for all TCP and ACV probes. If probe port is not
zero, Equalizer uses the value specified as the port for all TCP and ACV
probes.
Hot Spare
Enable the hot spare check box if you plan to use this server as a backup
server, in case the other server instances in a server pool on the cluster
fail. Checking hot spare forces Equalizer to direct incoming connections to
this server only if all the other servers in the cluster are down. You should
only configure one server in a cluster as a hot spare.
For example, you might configure a server as a hot spare if you are using
licensed software on your servers and the license allows you to run the
software only on one node at a time. In this situation, you could configure
the software on two servers in the cluster and then configure one of those
servers as a hot spare. Equalizer will use the second server only if the first
goes down, enabling you to make your application available without
violating the licensing terms or having to purchase two software licenses.
Override Persistence
Disables persistence for the server when the persist flag (Layer 7 cluster)
or a non-zero sticky time (Layer 4 cluster) is set on a cluster. For a Layer 7
cluster, this means that a cookie will not be inserted into the response
header when returned to the client. No sticky record is set for a Layer 4
cluster. This flag is usually used to disable persistence for a hot spare.
Quiesce
When enabled, Equalizer avoids sending new requests to the server. This
is usually used in preparation for shutting down an HTTP or HTTPS server,
and is sometimes also called “server draining”. Refer to
Probe Layer 4
This flag enables or disables Layer 4 TCP and ACV probes for this server.
By default this flag is enabled.
Copyright © 2014 Coyote Point Systems, A Subsidiary of Fortinet, Inc.
All Rights Reserved.
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