Nortel Web OS 10.0, Application Manual

Page: 231 / 482

Web OS 10.0 Application Guide
Chapter 10: Health Checking
n
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
N
OTE
–
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