diff --git a/docs/en-US/add-load-balancer-rule.xml b/docs/en-US/add-load-balancer-rule.xml index 2d911feaf75..b679736ba8b 100644 --- a/docs/en-US/add-load-balancer-rule.xml +++ b/docs/en-US/add-load-balancer-rule.xml @@ -67,8 +67,8 @@ Stickiness: (Optional) Click Configure and choose - the algorithm for the stickiness policy. See Sticky Session Policies for Load Balancer - Rules. + the algorithm for the stickiness policy. See . AutoScale: Click Configure and complete the @@ -76,6 +76,22 @@ + Health Check: (Optional; NetScaler load balancers only) Click + Configure and fill in the characteristics of the health check policy. See . + + Ping path (Optional): Sequence of destinations to which to send health check queries. + Default: / (all). + Response time (Optional): How long to wait for a response from the health check (2 - 60 seconds). + Default: 5 seconds. + Interval time (Optional): Amount of time between health checks (1 second - 5 minutes). + Default value is set in the global configuration parameter lbrule_health check_time_interval. + Healthy threshold (Optional): Number of consecutive health check successes + that are required before declaring an instance healthy. + Default: 2. + Unhealthy threshold (Optional): Number of consecutive health check failures that are required before declaring an instance unhealthy. + Default: 10. + Click Add VMs, then select two or more VMs that will divide the load of incoming traffic, and click Apply. diff --git a/docs/en-US/health-checks-for-lb-rules.xml b/docs/en-US/health-checks-for-lb-rules.xml new file mode 100644 index 00000000000..84cae658120 --- /dev/null +++ b/docs/en-US/health-checks-for-lb-rules.xml @@ -0,0 +1,48 @@ + + +%BOOK_ENTITIES; +]> + + +
+ + Health Checks for Load Balancer Rules + (NetScaler load balancer only) + + Health checks are used in load-balanced applications to ensure that requests are forwarded + only to running, available services. + When creating a load balancer rule, you can specify a health check policy. + This is in addition to specifying the + stickiness policy, algorithm, and other load balancer rule options. + You can configure one health check policy per load balancer rule. + Any load balancer rule defined on a NetScaler load balancer in &PRODUCT; can have a health check policy. + The policy consists of a ping path, thresholds to define "healthy" and "unhealthy" states, + health check frequency, and timeout wait interval. + When a health check policy is in effect, + the load balancer will stop forwarding requests to any resources that are found to be unhealthy. + If the resource later becomes available again, the periodic health check + will discover it, and the resource will once again be added to the pool of resources that can + receive requests from the load balancer. + You can delete or modify existing health check policies. + To configure how often the health check is performed by default, use the global + configuration setting lbrule_health check_time_interval. + You can override this value for an individual health check policy. + For details on how to set a health check policy using the UI, see . +
diff --git a/docs/en-US/load-balancer-rules.xml b/docs/en-US/load-balancer-rules.xml index 77739001966..884647c6f8b 100644 --- a/docs/en-US/load-balancer-rules.xml +++ b/docs/en-US/load-balancer-rules.xml @@ -37,4 +37,5 @@ +