web dispacther load balancing

[Former Member]

Hi All,

we have installed web dispacther to load balance http/https . we have BI dual stack where users logged to that portal of BI and triggers the SRM applications.. so all requests go to SRM apps.

SRM having CI,DI and DB server ... now if we want to load balance http/https requests , do we have to change the Iview URL on BI -portal in System administration tab which is presently pointitng to SRM cluster virtual name to web dispacther URL which directs the load to CI or DI..

Please suggest ..... does we have to change the URL to web dispacther or anything else..

Thanks,

Subhash.G

[Former Member]

Thanks

[Former Member]

Hello,

Onec you start the web dispatcher, instead of using the port number 50000+<instance_no.>*100, use the default HTTP port 80.. Other than this you dont require to change any URL in System Administration tab..

For Example,

Default URL to login into portal is

http://<hostname>:<port>/irj/portal

After you start your Web dispatcher, use

http://<hostname>:80/irj/portal

Note: Also ensure that the permissions for the file icmbnd under /usr/sap/<SID>/SYS/exe has 4755..

Reward points, if suggestion is usefull..

Regards

Thilip Kumar

[Former Member]

Hi Kumar,

Thanks for the reply...

Have u tried the option u suggested.. because that option is not working.

hostname:80/irj/portal..... what is port 80 ?web dispacther listens to 81$$...

Thnaks,

Subhash.G

[Former Member]

Hi Subhash,

The web dispatcher can also be configured in such a way to route the requests via default HTTP port.. You may need to change the parameter icm/server_port_0 in webdisp.pfl file to default port 80 or the webdispatcher port (8081)...

Regards

Thilip Kumar

[Former Member]

Hi Kumar,

Thanks for the reply.

We don't have SRM separate portal, we have BI portal from there SRM applications are triggered and web dispacther is listening to SRM not to BI.. so we cannot give the suggestions u made..

Now we have change the ITS host name to Web dispatcher and observed that when we change the ITS protocal to HTTP.. everything is fine ,but HTTPS page canot be displayed error is coming for SRM applications...

Users log in to BI portal thru HTTPS only....

The test connection for SRM application shows the below log:

Test Details:

The test consists of the following steps:

1. Checks the validity of system ID in the system object.

2. Checks if the system can be retrieved from the PCD.

3. Check whether the system object has a valid system alias

4. Check whether a SAP system is defined in the system object

5. Validate the following parameters: ITS protocol; ITS host name

6. Checks if the host name of the server can be resolved.

7. Pings the server to see if it is alive.

8. Checks HTTP/S connectivity to the defined back-end application

Results

1. The system ID is valid

2. The system was retrieved.

3. Retrieval of the default alias was successful

4. The system object represents an SAP system

5. The following parameters are valid: ITS Protocol (https) ITS Host Name (nbcddsasr10.corp.irvineco.com:8102)

6. The host name nbcddsasr10.corp.irvineco.com was resolved successfully.

7. The server nbcddsasr10.corp.irvineco.com could not be pinged successfully.

Step #8: Checks HTTP/S connectivity to the defined back-end application is failed and i have not found any backend errors or messages for this...

Please suggest ....

Thanks,

Subhash.G