IBM WebSphere Application Server (WAS) Edge Components includes the IBM HTTP Server (IHS) with Edge Components, which can be used for load balancing. The load balancing configuration is typically managed through the IBM IHS administrative commands.
Here are some basic commands for managing the IBM WAS Edge Components Load Balancer using the command line:
IBM HTTP Server (IHS) Administrative Commands:
- Start IBM HTTP Server:
<IHS_HOME>/bin/apachectl start On Windows:bashCopy code<IHS_HOME>\bin\httpd.exe
- Stop IBM HTTP Server:
<IHS_HOME>/bin/apachectl stop On Windows:bashCopy code<IHS_HOME>\bin\httpd.exe -k shutdown
- Restart IBM HTTP Server:
<IHS_HOME>/bin/apachectl restart On Windows:bashCopy code<IHS_HOME>\bin\httpd.exe -k restart
- Check Configuration Syntax:
<IHS_HOME>/bin/apachectl configtest On Windows:bashCopy code<IHS_HOME>\bin\httpd.exe -t
Load Balancer Configuration:
The load balancing configuration in IBM IHS involves modifying the httpd.conf file to include directives related to load balancing. The specific configuration details depend on the version of IBM IHS and the desired load balancing method (e.g., mod_proxy_balancer, mod_jk).
For example, using mod_proxy_balancer, you might include configurations like:
apache
# Load Balancer Configuration <Proxy balancer://mycluster> BalancerMember http://appserver1:8080 route=worker1 BalancerMember http://appserver2:8080 route=worker2 </Proxy> # Enable the load balancer ProxyPass /test balancer://mycluster/test ProxyPassReverse /test balancer://mycluster/test
Example Usage:
Assuming your IBM HTTP Server is installed in /opt/IBM/HTTPServer:
- Start IBM HTTP Server on Unix/Linux:
/opt/IBM/HTTPServer/bin/apachectl start On Windows:/opt/IBM/HTTPServer/bin/httpd.exe
- Stop IBM HTTP Server on Unix/Linux:
/opt/IBM/HTTPServer/bin/apachectl stop On Windows:/opt/IBM/HTTPServer/bin/httpd.exe -k shutdown
- Restart IBM HTTP Server on Unix/Linux:
/opt/IBM/HTTPServer/bin/apachectl restart On Windows:/opt/IBM/HTTPServer/bin/httpd.exe -k restart
- Check Configuration Syntax on Unix/Linux:
/opt/IBM/HTTPServer/bin/apachectl configtest On Windows:/opt/IBM/HTTPServer/bin/httpd.exe -t
Additional Considerations:
- Ensure that the necessary environment variables are set before running the commands.
- Always refer to the official IBM documentation specific to your version of IBM IHS and the Edge Components for the most accurate and up-to-date information.
Please note that the commands and configurations may have changed or been updated since my last knowledge update in January 2022. Always check the official IBM documentation for the version you are using.