# Licensed to the Apache Software Foundation (ASF) under one or more # contributor license agreements. See the NOTICE file distributed with # this work for additional information regarding copyright ownership. # The ASF licenses this file to You under the Apache License, Version 2.0 # (the "License"); you may not use this file except in compliance with # the License. You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. # Note that the distributed version of this file requires modification # before it is usable. # # Reference documentation: http://tomcat.apache.org/connectors-doc/reference/workers.html # # As a general note, the characters $( and ) are used to reference # property values in other properties. # # Whenever you see a set of lines such as: # x=value # y=$(x)othervalue # # the final value for y will be "valueothervalue" # Define two status worker: # - jk-status for read-only use # - jk-manager for read/write use worker.list=jk-status worker.jk-status.type=status worker.jk-status.read_only=true worker.list=jk-manager worker.jk-manager.type=status # We define a load balancer worker # with name "balancer" worker.list=balancer worker.balancer.type=lb # error_escalation_time: seconds, default = recover_time/2 (=30) # Determines, how fast a detected error should switch from # local error state to global error state # Since: 1.2.28 worker.balancer.error_escalation_time=0 # - max_reply_timeouts: number, default=0 # If there are to many reply timeouts, a worker # is put into the error state, i.e. it will become # unavailable for all sessions residing on the respective # Tomcat. The number of tolerated reply timeouts is # configured with max_reply_timeouts. The number of # timeouts occuring is divided by 2 once a minute and the # resulting counter is compared against max_reply_timeouts. # If you set max_reply_timeouts to N and the errors are # occuring equally distributed over time, you will # tolerate N/2 errors per minute. If they occur in a burst # you will tolerate N errors. # Since: 1.2.24 worker.balancer.max_reply_timeouts=10 # Now we add members to the load balancer # First member is "node1", most # attributes are inherited from the # template "worker.template". worker.balancer.balance_workers=node1 worker.node1.reference=worker.template worker.node1.host=localhost worker.node1.port=8009 # Activation allows to configure # whether this node should actually be used # A: active (use node fully) # D: disabled (only use, if sticky session needs this node) # S: stopped (do not use) # Since: 1.2.19 worker.node1.activation=A # Second member is "node2", most # attributes are inherited from the # template "worker.template". worker.balancer.balance_workers=node2 worker.node2.reference=worker.template worker.node2.host=localhost worker.node2.port=8009 # Activation allows to configure # whether this node should actually be used # A: active (use node fully) # D: disabled (only use, if sticky session needs this node) # S: stopped (do not use) # Since: 1.2.19 worker.node2.activation=D # Finally we put the parameters # which should apply to all our ajp13 # workers into the referenced template # - Type is ajp13 worker.template.type=ajp13 # - socket_connect_timeout: milliseconds, default=0 # Since: 1.2.27 worker.template.socket_connect_timeout=5000 # - socket_keepalive: boolean, default=false # Should we send TCP keepalive packets # when connection is idle (socket option)? worker.template.socket_keepalive=true # - ping_mode: Character, default=none # When should we use cping/cpong connection probing? # C = directly after establishing a new connection # P = directly before sending each request # I = in regular intervals for idle connections # using the watchdog thread # A = all of the above # Since: 1.2.27 worker.template.ping_mode=A # - ping_timeout: milliseconds, default=10000 # Wait timeout for cpong after cping # Can be overwritten for modes C and P # Using connect_timeout and prepost_timeout. # Since: 1.2.27 worker.template.ping_timeout=10000 # - connection_pool_minsize: number, default=connection_pool_size # Lower pool size when shrinking pool due # to idle connections # We want all connections to be closed when # idle for a long time in order to prevent # firewall problems. # Since: 1.2.16 worker.template.connection_pool_minsize=0 # - connection_pool_timeout: seconds, default=0 # Idle time, before a connection is eligible # for being closed (pool shrinking). # This should be the same value as keepAliveTimeout # (if it is set explicitly) or connectionTimeout # in the Tomcat AJP connector, but there it is # milliseconds, here seconds. worker.template.connection_pool_timeout=600 # - reply_timeout: milliseconds, default=0 # Any pause longer than this timeout during waiting # for a part of the reply will abort handling the request # in mod_jk. The request will proceed running in # Tomcat, but the web server resources will be freed # and an error is send to the client. # For individual requests, the timeout can be overwritten # by the Apache environment variable JK_REPLY_TIMEOUT. # JK_REPLY_TIMEOUT since: 1.2.27 worker.template.reply_timeout=300000 # - recovery_options: number, default=0 # Bit mask to configure, if a request, which was send # to a backend successfully, should be retried on another backend # in case there's a problem with the response. # Value "3" disables retries, whenever a part of the request was # successfully send to the backend. worker.template.recovery_options=3
