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Proxy Configuration The following configuration values are sent to proxies during server startup, when a proxy is detected via the advertise mechanism, or during the resetting of a proxy's configuration during error recovery. Attribute Default Description stickySession true Indicates whether subsequent requests for a given session should be routed to the same node, if possible. stickySessionRemove false Indicates whether the httpd proxy should remove session stickiness in the event that the balancer is unable to route a request to the node to which it is stuck. This property is ignored if stickySession is false. stickySessionForce true Indicates whether the httpd proxy should return an error in the event that the balancer is unable to route a request to the node to which it is stuck. This property is ignored if stickySession is false. workerTimeout -1 Number of seconds to wait for a worker to become available to handle a request. When all the workers of a balancer are usable, mod_cluster will retry after a while (workerTimeout/100) to find an usable worker. That is timeout in the balancer mod_proxy documentation. A value of -1 indicates that the httpd will not wait for a worker to be available and will return an error if none is available. maxAttempts 1 Number of times an httpd proxy will attempt to send a given request to a worker before giving up. The minimum value is 1, meaning try only once. (Note that mod_proxy default is also 1: no retry). flushPackets false Enables/disables packet flushing flushWait -1 Time to wait before flushing packets. A value of -1 means wait forever. ping 10 Time (in seconds) in which to wait for a pong answer to a ping smax Determined by httpd configuration Soft maximum idle connection count (that is the smax in worker mod_proxy documentation). The maximum value depends on the httpd thread configuration (ThreadsPerChild or 1). ttl 60 Time to live (in seconds) for idle connections above smax nodeTimeout -1 Timeout (in seconds) for proxy connections to a node. That is the time mod_cluster will wait for the back-end response before returning error. That corresponds to timeout in the worker mod_proxy documentation. A value of -1 indicates no timeout. Note that mod_cluster always uses a cping/cpong before forwarding a request and the connectiontimeout value used by mod_cluster is the ping value. balancer mycluster The balancer name loadBalancingGroup None If specified, load will be balanced among jvmRoutes withing the same load balancing group. A loadBalancingGroup is conceptually equivalent to a mod_jk domain directive. This is primarily used in conjunction with partitioned session replication (e.g. buddy replication). Note When nodeTimeout is not defined the ProxyTimeout directive Proxy is used. If ProxyTimeout is not defined the server timeout (Timeout) is used (default 300 seconds). nodeTimeout, ProxyTimeout or Timeout is set at the socket level.