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apache : Obtain part of url in proxy balancer from one balancer member

I have cluster setup of Apache server . Behind this I have 2 Jboss instances which is load balanced by apache.

The configuration look somewhat like the below

<VirtualHost *:1111>
ServerAdmin admin@example.com
ServerName www.example.com

DocumentRoot "/apps"
ErrorLog "logs/https.www.example.com.-error_log"
TransferLog "logs/https.www.example.com-access_log"
LogLevel warn

<Directory "/apps">
Options -Indexes +FollowSymLinks
AllowOverride None
Order allow,deny
Allow from all
</Directory>

SSLProxyEngine On
SSLProxyVerify On

SSLProxyMachineCertificateFile "/apps/apache/conf/ssl/int/proxy.pem"
SSLProxyCACertificateFile "/apps/apache/conf/ssl/int/cert.pem"

RewriteEngine On

Header set Cache-Control "max-age=60, public"

<Proxy balancer://2node-aa>

BalancerMember https://app01:8089 route=node1
BalancerMember https://app02:8089 route=node2

ProxyPreserveHost On

ProxyPass /aa balancer://2node/aa stickysession=JSESSIONID|jsessionid
ProxyPass /static balancer://2node/static stickysession=JSESSIONID|jsessionid

ProxyPassReverse /aa balancer://2node/aa
ProxyPassReverse /static balancer://2node/static

ProxyPass /1/aa https://app01:8089/aa
ProxyPass /2/aa https://app02:8089/aa

ProxyPassReverse /1/aa https://app01:8089/aa
ProxyPassReverse /2/aa https://app02:8089/aa

ProxyPass /bb balancer://2node/rest stickysession=JSESSIONID|jsessionid
ProxyPassReverse /bb balancer://2node/bb

</VirtualHost>

In the url access certain part of the url i want it to be routed from second node i.e node2 of jboss.

e.g. if i am accessing http://www.example.com/aa/login/login.jsp i need this request to be process by node2 app02 only.

Rest of the request should load balance as normal access. How do i set the apache to do it ?

I have tried lot of rewrite,<Location> and ProxyPassMatch none has worked so far.

Please Help. Thanks in advance.

You need to separate the nodes into different balancers. e.g. here's my apache config for balancing reads and writes across servers.

Code:

  # Load balancing to different nodes based on type of requests

  # Send POST, PUT, and DELETEs to writeBalancer

  RewriteCond %{REQUEST_METHOD} ^(POST|PUT|DELETE)$

  RewriteRule ^/(.*)$ balancer://writeBalancer$1 [P]

  # Send GET, HEAD, and OPTIONS to readBalancer

  RewriteCond %{REQUEST_METHOD} ^(GET|HEAD|OPTIONS)$

  RewriteRule ^/(.*)$ balancer://readBalancer$1 [P]

You can add the same BalancerMember to multiple balancers. See the rewrite flags for a description of [P].

SAM

Hi SAM,

Thanks for your reply.

I did try this but it does not work.

<Proxy balancer://2node-aa>

BalancerMember https://app02:8080 route=node2

</Proxy>
RewriteRule ^/aa/login/(.*)$ balancer://2node-aa$1 [P]

I had put it just above the balancer with two node.
Don't see any error in the log file.

I used the below statement in the configuration file which resolved the issue.

<Proxy balancer://2node-aa>

BalancerMember https://app02:8080 route=node2

</Proxy>

RewriteRule ^/aa/login/(.*)$ balancer://2node-aa%{REQUEST_URI} [P,QSA,L]

This link help me.

http://stackoverflow.com/questions/1...url-redirectio

-Thanks

Quote:

Originally Posted by floss (Post 5055491)

If you read how mod_rewrite works you'd see that you're not grouping the regex properly if you need the full request string... You'd need something like this....

Code:

<Proxy balancer://2node-aa>

  BalancerMember https://app02:8080 route=node2

</Proxy>

RewriteRule ^(/aa/login/.*)$ balancer://2node-aa$1 [P]

Notice now I grouped the RewriteRule. Before you had...

Code:

RewriteRule ^/aa/login/(.*)$ balancer://2node-aa$1 [P]

which means if someone visited http://example.com/aa/login/some/url then what would be passed to the proxy server is "some/url". Where the following actually passes "/aa/login/some/url" like you would expect.

Code:

RewriteRule ^(/aa/login/.*)$ balancer://2node-aa$1 [P]

You should really read the documentation to understand the solution provided to you and then adjust the solution to what you actually want. In your case the %{REQUEST_URI} will cover the whole URI so the parenthesis are no longer needed in the RewriteRule string. See apache documentation on mod_rewrite.

SAM