C H A P T E R 4 | Scenario 2 |
balancing (Rich Mode) can place a heavy burden on the load balancers. This is ideal for balancing by CPU Utilization. Layer 4 load balancing is typically many short duration connections. In this case response time can be used as a direct measure of the actual server farms loading. This is ideal for balancing by Response Time.
The mapping of services to hostnames is also the easiest place to designate a service standby. If the service had been designated as standby in the agent record when it was first configured, it would have no effect. The standby command for an agent or ISV Group is a shortcut to placing that service in standby in all the hostnames that use that service at the time the command is issued.
config dns zones
www
method avgresp siteservices
map site1:10.1.1.100:80 map site2:10.1.2.100:80 map backupsite:10.1.4.100:80 backupsite:10.1.4.100:80 standby
config dns zones
wwwsecure method cpu siteservices
map site1:10.1.1.100:443 map site2:10.1.2.100:443
map backupsite:10.1.4.100:443 backupsite:10.1.4.100:443 standby
config dns zones
ftp
method conn siteservices
45
