[jboss-user] [Clustering/JBoss] - :: Regarding using Software Load balancer Mod_jk1.2.23 with
BhaktavatsalamReddy
do-not-reply at jboss.com
Wed Jul 18 18:27:29 EDT 2007
Hi,
I am not sure if I am in the right forum regarding setting up the load balancer with JBoss4.2.0 GA.
I have clearly followed the step by step procedure mentioned in the following link:
http://www.jboss.org/wiki/Wiki.jsp?page=UsingMod_jk1.2WithJBoss
Configuration files and properties files required to set up are:
1. httpd.conf
2. mod-jk.conf
3. workers.properties
4. uriworkermap.properties
All of the above files are placed under anonymous wrote : apache2/conf
5. server.xml
placed underanonymous wrote : default/deploy/conf/jbossweb-tomcat55.sar
6. jboss-service.xml
placed under anonymous wrote : default/deploy/conf/jbossweb-tomcat55.sar
1. httpd.conf
Added the following piece to the existing file under the mensioned dir:
| # Include mod_jk configuration file
| Include conf/mod-jk.conf
|
| # Configure mod_jk
| #
| JkWorkersFile conf/workers.properties
| JkLogFile logs/mod_jk.log
| JkLogLevel debug
|
| JkMount /web-console/* node1
| JkMount /jmx-console/* node1
| JkMount /mambo/* node1
| JkMount /*.jsp node1
| JkMount /servlet/* node1
|
| LoadModule jk_module modules/mod_jk.so
|
2. mod-jk.conf
| # Load mod_jk module
| # Specify the filename of the mod_jk lib
| LoadModule jk_module modules/mod_jk.so
|
| # Where to find workers.properties
| JkWorkersFile conf/workers.properties
|
| # Where to put jk logs
| JkLogFile logs/mod_jk.log
|
| # Set the jk log level [debug/error/info]
| JkLogLevel debug
|
| # Select the log format
| JkLogStampFormat "[%a %b %d %H:%M:%S %Y]"
|
| # JkOptions indicates to send SSK KEY SIZE
| # Note: Changed from +ForwardURICompat.
| # See http://tomcat.apache.org/security-jk.html
| JkOptions +ForwardKeySize +ForwardURICompatUnparsed -ForwardDirectories
|
| # JkRequestLogFormat
| JkRequestLogFormat "%w %V %T"
|
| # Mount your applications
| JkMount /web-console/* loadbalancer
| JkMount /jmx-console/* loadbalancer
| JkMount /mambo/* loadbalancer
|
| # You can use external file for mount points.
| # It will be checked for updates each 60 seconds.
| # The format of the file is: /url=worker
| # /examples/*=loadbalancer
| JkMountFile conf/uriworkermap.properties
|
| # Add shared memory.
| # This directive is present with 1.2.10 and
| # later versions of mod_jk, and is needed for
| # for load balancing to work properly
| # Note: Replaced JkShmFile logs/jk.shm due to SELinux issues. Refer to
| # https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=225452
| JkShmFile logs/jk.shm
|
| # Add jkstatus for managing runtime data
| <Location /jkstatus/>
| JkMount status
| Order deny,allow
| Deny from all
| Allow from 127.0.0.1
| </Location>
|
3. workers.properties
| # Define list of workers that will be used
| # for mapping requests
| # The configuration directives are valid
| # for the mod_jk version 1.2.18 and later
| #
| workers.tomcat_home=C:\jboss-4.2.0.GA
| worker.list=loadbalancer,status
|
| # Define Node1
| # modify the host as your host IP or DNS name.
| worker.node1.port=8009
| worker.node1.host=localhost
| worker.node1.type=ajp13
| worker.node1.cachesize=50
| worker.node1.cache_timeout=600
| worker.node1.socket_keepalive=1
| worker.node1.recycle_timeout=300
|
| worker.node1.lbfactor=1
| # worker.node1.connection_pool_size=10 (1)
|
| # Load-balancing behaviour
| worker.loadbalancer.type=lb
| worker.loadbalancer.balance_workers=node1
| worker.loadbalancer.sticky_session=Off
|
| # Status worker for managing load balancer
| worker.status.type=status
|
4. uriworkermap.properties
| # Simple worker configuration file
| #
| # Mount the Servlet context to the ajp13 worker
| /jmx-console=loadbalancer
| /jmx-console/*=loadbalancer
| /web-console=loadbalancer
| /web-console/*=loadbalancer
| /mambo=loadbalancer
| /mambo/*=loadbalancer
|
5. server.xml
Adde following snippets to the existing file:
| <Connector
| protocol="AJP/1.3"
| port="8009"
| minProcessors="5"
| maxProcessors="75"
| enableLookups="false"
| redirectPort="8443"
| acceptCount="10"
| debug="0"
| connectionTimeout="0"
| useURIValidationHack="false"/>
|
and
| <Engine name="jboss.web" defaultHost="localhost" jvmRoute="node1">
6. jboss-service.xml
Modified the existing file as follows and added the following snippet:
<attribute name="UseJK">true</attribute>
I am trying to access it via:
http://localhost/web-console
or
http://localhost/jmx-console
0r
http://localhost/mambo
I am getting the following error:
Service Temporarily Unavailable
| The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later.
|
| --------------------------------------------------------------------------------
|
| Apache/2.0.59 (Win32) mod_jk/1.2.23 Server at 10.1.5.231 Port 80
The access.log is as follows:
[Wed Jul 18 13:04:23 2007] [warn] module jk_module is already loaded, skipping
| [Wed Jul 18 13:04:33 2007] [warn] module jk_module is already loaded, skipping
| 127.0.0.1 - - [18/Jul/2007:13:05:02 -0700] "GET /mambo HTTP/1.1" 503 412
| 127.0.0.1 - - [18/Jul/2007:13:57:17 -0700] "GET /mambo HTTP/1.1" 503 412
| [Wed Jul 18 14:10:53 2007] [warn] module jk_module is already loaded, skipping
| 127.0.0.1 - - [18/Jul/2007:14:11:00 -0700] "GET /mambo HTTP/1.1" 503 412
The error.log is as follows :
| [Wed Jul 18 14:10:55 2007] [debug] child.c(697): Child 6916: Worker thread 237 starting.
| [Wed Jul 18 14:10:55 2007] [debug] child.c(697): Child 6916: Worker thread 239 starting.
| [Wed Jul 18 14:10:55 2007] [debug] child.c(697): Child 6916: Worker thread 241 starting.
| [Wed Jul 18 14:10:55 2007] [debug] child.c(697): Child 6916: Worker thread 243 starting.
| [Wed Jul 18 14:10:55 2007] [debug] child.c(697): Child 6916: Worker thread 245 starting.
| [Wed Jul 18 14:10:55 2007] [debug] child.c(697): Child 6916: Worker thread 247 starting.
The mod_jk.log is as follows:
[Wed Jul 18 14:39:27 2007][6916:11872] [debug] jk_uri_worker_map.c (726): File C:/ApacheGroup/Apache2/conf/uriworkermap.properties is not modified
| [Wed Jul 18 14:39:27 2007][6916:11872] [debug] jk_uri_worker_map.c (589): Attempting to map URI '/mambo' from 12 maps
| [Wed Jul 18 14:39:27 2007][6916:11872] [debug] jk_uri_worker_map.c (601): Attempting to map context URI '/jmx-console/*=loadbalancer' source 'uriworkermap'
| [Wed Jul 18 14:39:27 2007][6916:11872] [debug] jk_uri_worker_map.c (601): Attempting to map context URI '/web-console/*=loadbalancer' source 'uriworkermap'
| [Wed Jul 18 14:39:27 2007][6916:11872] [debug] jk_uri_worker_map.c (601): Attempting to map context URI '/web-console/*=node1' source 'JkMount'
| [Wed Jul 18 14:39:27 2007][6916:11872] [debug] jk_uri_worker_map.c (601): Attempting to map context URI '/jmx-console/*=node1' source 'JkMount'
| [Wed Jul 18 14:39:27 2007][6916:11872] [debug] jk_uri_worker_map.c (601): Attempting to map context URI '/servlet/*=node1' source 'JkMount'
| [Wed Jul 18 14:39:27 2007][6916:11872] [debug] jk_uri_worker_map.c (601): Attempting to map context URI '/jkstatus/=status' source 'JkMount'
| [Wed Jul 18 14:39:27 2007][6916:11872] [debug] jk_uri_worker_map.c (601): Attempting to map context URI '/mambo/*=loadbalancer' source 'uriworkermap'
| [Wed Jul 18 14:39:27 2007][6916:11872] [debug] jk_uri_worker_map.c (601): Attempting to map context URI '/mambo/*=node1' source 'JkMount'
| [Wed Jul 18 14:39:27 2007][6916:11872] [debug] jk_uri_worker_map.c (601): Attempting to map context URI '/jmx-console=loadbalancer' source 'uriworkermap'
| [Wed Jul 18 14:39:27 2007][6916:11872] [debug] jk_uri_worker_map.c (601): Attempting to map context URI '/web-console=loadbalancer' source 'uriworkermap'
| [Wed Jul 18 14:39:27 2007][6916:11872] [debug] jk_uri_worker_map.c (601): Attempting to map context URI '/mambo=loadbalancer' source 'uriworkermap'
| [Wed Jul 18 14:39:27 2007][6916:11872] [debug] jk_uri_worker_map.c (627): Found an exact match '/mambo=loadbalancer'
| [Wed Jul 18 14:39:27 2007][6916:11872] [debug] mod_jk.c (2111): Into handler jakarta-servlet worker=loadbalancer r->proxyreq=0
| [Wed Jul 18 14:39:27 2007][6916:11872] [debug] jk_worker.c (114): found a worker loadbalancer
| [Wed Jul 18 14:39:27 2007][6916:11872] [debug] jk_worker.c (321): Maintaining worker loadbalancer
| [Wed Jul 18 14:39:27 2007][6916:11872] [debug] jk_ajp_common.c (2416): reached pool min size 25 from 50 cache slots
| [Wed Jul 18 14:39:27 2007][6916:11872] [debug] jk_ajp_common.c (2424): recycled 0 sockets in 0 seconds from 50 pool slots
| [Wed Jul 18 14:39:27 2007][6916:11872] [debug] jk_lb_worker.c (543): decay with 2^23
| [Wed Jul 18 14:39:27 2007][6916:11872] [debug] jk_lb_worker.c (444): worker node1 is marked for recovery
| [Wed Jul 18 14:39:27 2007][6916:11872] [debug] jk_worker.c (290): Found worker type 'lb'
| [Wed Jul 18 14:39:27 2007][6916:11872] [debug] mod_jk.c (607): Service protocol=HTTP/1.1 method=GET host=(null) addr=127.0.0.1 name=10.1.5.231 port=80 auth=(null) user=(null) laddr=127.0.0.1 raddr=127.0.0.1
| [Wed Jul 18 14:39:27 2007][6916:11872] [debug] jk_lb_worker.c (915): service sticky_session=0 id='empty'
| [Wed Jul 18 14:39:27 2007][6916:11872] [debug] jk_lb_worker.c (935): service worker=node1 route=node1
| [Wed Jul 18 14:39:27 2007][6916:11872] [debug] jk_ajp_common.c (2343): acquired connection pool slot=0
| [Wed Jul 18 14:39:27 2007][6916:11872] [debug] jk_ajp_common.c (548): ajp marshaling done
| [Wed Jul 18 14:39:27 2007][6916:11872] [debug] jk_ajp_common.c (1796): processing node1 with 2 retries
| [Wed Jul 18 14:39:27 2007][6916:11872] [debug] jk_connect.c (335): socket TCP_NODELAY set to On
| [Wed Jul 18 14:39:27 2007][6916:11872] [debug] jk_connect.c (348): socket SO_KEEPALIVE set to On
| [Wed Jul 18 14:39:27 2007][6916:11872] [debug] jk_connect.c (433): trying to connect socket 824 to 127.0.0.1:8080
| [Wed Jul 18 14:39:28 2007][6916:11872] [info] jk_connect.c (451): connect to 127.0.0.1:8080 failed (errno=61)
| [Wed Jul 18 14:39:28 2007][6916:11872] [info] jk_ajp_common.c (876): Failed opening socket to (127.0.0.1:8080) (errno=61)
| [Wed Jul 18 14:39:28 2007][6916:11872] [info] jk_ajp_common.c (1273): (node1) error connecting to the backend server (errno=61)
| [Wed Jul 18 14:39:28 2007][6916:11872] [info] jk_ajp_common.c (1941): (node1) sending request to tomcat failed, recoverable operation attempt=1
| [Wed Jul 18 14:39:28 2007][6916:11872] [debug] jk_connect.c (335): socket TCP_NODELAY set to On
| [Wed Jul 18 14:39:28 2007][6916:11872] [debug] jk_connect.c (348): socket SO_KEEPALIVE set to On
| [Wed Jul 18 14:39:28 2007][6916:11872] [debug] jk_connect.c (433): trying to connect socket 824 to 127.0.0.1:8080
| [Wed Jul 18 14:39:29 2007][6916:11872] [info] jk_connect.c (451): connect to 127.0.0.1:8080 failed (errno=61)
| [Wed Jul 18 14:39:29 2007][6916:11872] [info] jk_ajp_common.c (876): Failed opening socket to (127.0.0.1:8080) (errno=61)
| [Wed Jul 18 14:39:29 2007][6916:11872] [info] jk_ajp_common.c (1273): (node1) error connecting to the backend server (errno=61)
| [Wed Jul 18 14:39:29 2007][6916:11872] [info] jk_ajp_common.c (1941): (node1) sending request to tomcat failed, recoverable operation attempt=2
| [Wed Jul 18 14:39:29 2007][6916:11872] [error] jk_ajp_common.c (1953): (node1) Connecting to tomcat failed. Tomcat is probably not started or is listening on the wrong port
| [Wed Jul 18 14:39:29 2007][6916:11872] [debug] jk_ajp_common.c (2286): recycling connection pool slot=0 for worker node1
| [Wed Jul 18 14:39:29 2007][6916:11872] [info] jk_lb_worker.c (1098): service failed, worker node1 is in error state
| [Wed Jul 18 14:39:29 2007][6916:11872] [debug] jk_lb_worker.c (1111): recoverable error... will try to recover on other worker
| [Wed Jul 18 14:39:29 2007][6916:11872] [info] jk_lb_worker.c (1160): All tomcat instances are busy or in error state
| [Wed Jul 18 14:39:29 2007]loadbalancer 10.1.5.231 1.921875
| [Wed Jul 18 14:39:29 2007][6916:11872] [info] mod_jk.c (2254): Service error=0 for worker=loadbalancer
Help in this regard would be highly appreciated.
Thanks in advance,
Bhakta
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