If you need to change the install HTTP instance, use the following IBM provided tools:
1. Start ADMIN HTTP Instance.
The HTTP Server (powered by Apache) can be configured via a browser interface. First you need to start the ADMIN HTTP instance using this command:
STRTCPSVR SERVER(*HTTP) HTTPSVR(*ADMIN)
2. Start HTTP Server Administration Interface.
Start your browser and access the HTTP Server Administration Interface with this URL:
http://[your IBM i name]:2001