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Web OS 10.0 Application Guide
Chapter 10: Health Checking
231
212777-A, February 2002
HTTP Health Checks
HTTP-based health checks can include the hostname for HOST: headers. The HOST: header
and health check URL are constructed from the following components:
If the HOST: header is required, an HTTP/1.1 GET will occur. Otherwise, an HTTP/1.0
GET will occur. HTTP health check is successful if you get a return code of 200.
Example 1:
hname = everest
dname = alteonwebsystems.com
content = index.html
Health check is performed using:
GET /index.html HTTP/1.1
Host: everest.alteonwebsystems.com
NOTE – If the content is not specified, the health check will revert back to TCP on the port that is being
load balanced.
Example 2:
hname = (none)
dname = raleighduram.cityguru.com
content = /page/gen/?_template=alteon
Health check is performed using:
GET /page/gen/?_template=alteon HTTP/1.1
Host: raleighduram.cityguru.com
Example 3:
hname = (none)
dname = jansus
content = index.html
Item Option Configured Under Max. Length
Virtual server hostname
hname /cfg/slb/virt/service
9 characters
Domain name
dname /cfg/slb/virt
35 characters
Server group health check field
content /cfg/slb/group
34 characters