| Configuring the WSM using Device Manager |
|
A WSM configured for Server Load Balancing (SLB) monitors the servers in the real server group and the load-balanced application(s) running on them. If a WSM detects that a server or application has failed, it will not direct any new connection requests to that server. When a service fails, a WSM can remove the individual service from the load-balancing algorithm without affecting the server's other services.
The WSM checks the status of each service on each real server every two seconds (the default setting). Real servers that are busy processing connections may not respond to health checks. If a service does not respond to four consecutive health checks (the default), the WSM declares the service unavailable. When a server is declared unavailable, the WSM continues its health checks. Following 8 successful health checks (the default), the server is returned to service. You can modify both the health check interval and the number of retries. For more information, see Modifying the health check interval and retries.
Note:
Health checks are performed sequentially when used in conjunction with a virtual server configured with multiple services and groups. As a result, the actual health-check interval could vary significantly from its configured value.
See also:
|
|