Apache's Load Balancer MOD_JK module implementation

Apache 's Load balancer mod_jk module Implementation

Configure The MOD_JK agent function First,

[email protected] ~]# Yum install-y httpd-devel

[Email protected] ~]# RPM-QL httpd-devel

/usr/sbin/apxs

Apxs is required for httpd installation of external modules

[email protected] ~]# Yum groupinstall "Development Tools" "Server Platform Development"-y//required package group.

The environment required for compiling the installation.

[Email protected] ~]# tar xftomcat-connectors-1.2.40-src.tar.gz

[[email protected] ~]# ls

A Install.log Oracle

apache-tomcat-7.0.56.tar.gz Install.log.syslog Root20141030092112523.zip

apache-tomcat-8.0.20.tar.gz jdk-8u31-linux-i586.rpm TOMCAT-CONNECTORS-1.2.40-SRC

b Lamp tomcat-connectors-1.2.40-src.tar.gz

[Email protected] ~]# CD TOMCAT-CONNECTORS-1.2.40-SRC

[[email protected] tomcat-connectors-1.2.40-src]# ls

conf docs howto-release.txt jkstatus LICENSE native NOTICE README.txt Support Tools XDocs

[Email protected] tomcat-connectors-1.2.40-src]# cdnative/

[[email protected] native]# ls

ACLOCAL.M4 apache-2.0 BUILDING.txt Configure docs makefile.am Netscape Scripts TODO.txt

apache-1.3 buildconf.sh Common Configure.ac IIS makefile.in README.txt STATUS.txt

[Email protected] native]#./configure--with-apxs=/usr/sbin/apxs

[[email protected] native]# make && Makeinstall

。

。

。

----------------------------------------------------------------------

chmod 755/usr/lib64/httpd/modules/mod_jk.so

Sure to arrange/etc/httpd/conf/httpd.conf ...

MAKE[1]: Leaving directory '/root/tomcat-connectors-1.2.40-src/native/apache-2.0 '

MAKE[1]: Entering directory '/root/tomcat-connectors-1.2.40-src/native '

MAKE[2]: Entering directory '/root/tomcat-connectors-1.2.40-src/native '

MAKE[2]: Nothing to is done for ' install-exec-am '.

MAKE[2]: Nothing to is done for ' install-data-am '.

MAKE[2]: Leaving directory '/root/tomcat-connectors-1.2.40-src/native '

MAKE[1]: Leaving directory '/root/tomcat-connectors-1.2.40-src/native '

[Email protected] ~]# CD/ETC/HTTPD

[[email protected] httpd]# ls

Conf CONF.D logs modules run

[Email protected] httpd]# CD conf.d/

[[email protected] conf.d]# ls

php.conf README welcome.conf

[Email protected] conf.d]# vim mod_jk.conf

# Load The MOD_JK

LoadModule Jk_module modules/mod_jk.so

Jkworkersfile/etc/httpd/conf.d/workers.properties

Jklogfile Logs/mod_jk.log

Jkloglevel Debug

Jkmount/* Tomcata

Jkmount/status/stata

~

[Email protected] conf.d]# vim/etc/httpd/conf.d/workers.properties

Worker.list = Tomcata,stata

Worker. tomcata.port=8009

Worker. tomcata.host=192.168.1.116

Worker. Tomcata.type=ajp13

Worker. Tomcata.lbfactor=1

Worker.statA.type = Status

[Email protected] conf.d]# httpd-t

Syntax OK

[Email protected] conf.d]# service httpd restart

stopping httpd: [OK]

Starting httpd: [OK]

[Email protected] conf.d]#

At this point, the configuration of a worker communication based on the MOD_JK module and the back end named Tomcata has been completed, and restarting the HTTPD service will take effect.

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There is also status information

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to achieve load balancing, you need at least two Tomcat to operate on this machine, configure another version of Tomcat, and access http://192.168.1.116:9080 after the configuration is complete

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MOD_JK directly supports load balancing and requires a special type of worker:lb to be enabled.

[Email protected] conf.d]# vim mod_jk.conf

#Load the MOD_JK

LoadModule Jk_module modules/mod_jk.so

Jkworkersfile/etc/httpd/conf.d/workers.properties

Jklogfile Logs/mod_jk.log

Jkloglevel Debug

Jkmount/* Lbcluster1

Jkmount/status/stata

~

[Email protected] conf.d]# vim workers.properties

Worker.list = Lbcluster1,stata

Worker. tomcata.port=8009

Worker. tomcata.host=192.168.1.116

Worker. Tomcata.type=ajp13

Worker. Tomcata.lbfactor=1

Worker. tomcatb.port=9009

Worker. tomcatb.host=192.168.1.116

Worker. Tomcatb.type=ajp13

Worker. Tomcatb.lbfactor=1

Worker.lbcluster1.type = lb

sorker.lbcluster1.sticky_session = 0

Worker.lbcluster1.balance_workers =tomcata, TOMCATB

Worker.statA.type = Status

~

[Email protected] conf.d]# httpd-t

Syntax OK

[Email protected] bin]# service httpd restart

stopping httpd: [OK]

Starting httpd: [OK]

[Email protected] bin]#

The MOD_JK is configured for load balancing and is tested as follows.

Visit http://192.168.1.116

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Refresh again

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Apache's Load Balancer MOD_JK module implementation