mod_cluster with tomcat 9

[exbalar]

Hello All,

I am planning to integrate the tomcat with httpd load lancer using mod_cluster, so i am searching for jars that need to be added in tomcat so that the listeners can be enabled as required by mod_cluster. kindly help me if you know anything on this.

Please suggest on whether workers.properties only be used for mod_cluster in httpd or proxy pass to be used.

below are the details:

documentation link : http://docs.jboss.org/mod_cluster/1.3.0/html_single/#d0e250

versions:

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

Rhel 7.4

tomcat 9.0

jdk 8

"Red Hat JBoss Core Services Apache HTTP Server 2.4.29 for RHEL 7 x86_64"

Regards,

Balasubramanian

[jfclere]

you have to use master or 1.4.x the tc-8.5.x and tc-9.0.x mod_cluster jars are compatible.

[exbalar]

yes, as you said. its working fine with 8.5 jars . also can you please help me to define balancer configuration like worker.properties , urlmapping.properties and proxy url config in mod_cluster.conf ? im migrating from mod_proxy to mod_cluster with ajp connector.

i have many clusters of balancers in my current configuration differentiated by URLs, ports .

below is my current config with mod_proxy, i need to migrate to mod_cluster with same not changing the load distribution, if i use the same, what is the use of workers.properties file and if backend server detects the httpd on its own then

how to guarantee the load distribution as defined in mod_proxy?

should i define many virtual hosts ? for each cluster defined here?

should i use the same below configuration along with mod_cluster ? still mod_cluster checks the tomcat's and particular context's load ?

<Proxy balancer://wsiservices>

BalancerMember http://127.0.0.1:8011/xyz/view/services retry=60  route=localhost.8011

BalancerMember http://127.0.0.1:8012/xyz/view/services retry=60  route=localhost.8012

BalancerMember http://127.0.0.1:8021/abc/view/services retry=60  route=localhost.8021

BalancerMember http://127.0.0.1:8022/abc/view/services retry=60  route=localhost.8022

BalancerMember http://127.0.0.1:8023/abc/view/services retry=60  route=localhost.8023

BalancerMember http://127.0.0.1:8024/abc/view/services retry=60  route=localhost.8024

BalancerMember http://127.0.0.1:8025/abc/view/services retry=60  route=localhost.8025

ProxySet stickysession=JSESSIONID

ProxySet lbmethod=bybusyness

</Proxy>

ProxyPass /abc/view/services balancer://wsiservices

ProxyPassReverse /abc/view/services balancer://wsiservices

ProxyPass /xyz/view/services balancer://wsiservices

ProxyPassReverse /xyz/view/services balancer://wsiservices

<Proxy balancer://wsiinstances>

BalancerMember http://127.0.0.1:8011/xyz/services/ws_cma3 retry=60  route=localhost.8011

BalancerMember http://127.0.0.1:8012/xyz/services/ws_cma3 retry=60  route=localhost.8012

BalancerMember http://127.0.0.1:8021/abc/services/ws_cma3 retry=60  route=localhost.8021

BalancerMember http://127.0.0.1:8022/abc/services/ws_cma3 retry=60  route=localhost.8022

BalancerMember http://127.0.0.1:8023/abc/services/ws_cma3 retry=60  route=localhost.8023

BalancerMember http://127.0.0.1:8024/abc/services/ws_cma3 retry=60  route=localhost.8024

BalancerMember http://127.0.0.1:8025/abc/services/ws_cma3 retry=60  route=localhost.8025

ProxySet stickysession=JSESSIONID

ProxySet lbmethod=bybusyness

</Proxy>

ProxyPass /abc/services/ws_cma3 balancer://wsiinstances

ProxyPassReverse /abc/services/ws_cma3 balancer://wsiinstances

ProxyPass /xyz/services/ws_cma3 balancer://wsiinstances

ProxyPassReverse /xyz/services/ws_cma3 balancer://wsiinstances

<Proxy balancer://xyzcluster>

BalancerMember http://127.0.0.1:8011/xyz retry=60  route=localhost.8011

BalancerMember http://127.0.0.1:8012/xyz retry=60  route=localhost.8012

ProxySet stickysession=JSESSIONID

ProxySet lbmethod=bybusyness

</Proxy>

ProxyPass /xyz balancer://xyzcluster

ProxyPassReverse /xyz balancer://xyzcluster

<Proxy balancer://abccluster>

BalancerMember http://127.0.0.1:8021/abc retry=60  route=localhost.8021

BalancerMember http://127.0.0.1:8022/abc retry=60  route=localhost.8022

BalancerMember http://127.0.0.1:8023/abc retry=60  route=localhost.8023

BalancerMember http://127.0.0.1:8024/abc retry=60  route=localhost.8024

BalancerMember http://127.0.0.1:8025/abc retry=60  route=localhost.8025

ProxySet stickysession=JSESSIONID

ProxySet lbmethod=bybusyness

</Proxy>

ProxyPass /abc balancer://abccluster

ProxyPassReverse /abc balancer://abccluster

<Proxy balancer://qrcluster>

BalancerMember http://localhost:8089/qr route=localhost.8089

ProxySet stickysession=JSESSIONID

ProxySet lbmethod=bybusyness

</Proxy>

ProxyPass /qr balancer://qrcluster

ProxyPassReverse /qr balancer://qrcluster