Case study on troubleshooting website inaccessibility when L1000 load balancing device performs layer-7 load balancing

On-site customers cannot directly access the server by entering http://1x.1x.1x.1x/sso/login and encounter the error shown in the image below

After consulting the customer, it was confirmed that directly accessing the server's IP address works normally, indicating no issues with the server. Subsequent remote checks revealed that the actual URL accessed for the server is http://2x.2x.2x.2x:8080/sso/login, while the configured server details are as follows:

real-server rs20

 ip address 2x.2x.2x.2x

 port 80

 priority 8

 probe XXX

 probe XXX

#

virtual-server vs type http

 virtual ip address 1x.1x.1x.1x

 lb-policy lp1

 default server-farm sf1

 service enable

#

It can be seen that the customer configured the server port as 80, not the actual 8080 they were accessing. Therefore, the service needs to be modified. After changing it to 8080, accessing the server via http://1x.1x.1x.1x/sso/login worked normally.

Real service port configuration error, problem resolved after changing to 8080