Coyote Point Systems E350GX, Руководство по установке и администрированию

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VLB Plotting
Equalizer Installation and Administration Guide 305
For example, the following series of messages was logged when a spike of CPU activity reduced availability for one
virtual machine (server) in a VLB cluster:
VLB: probe: Server 192.168.1.51 VLB state changed from 0 to 100
VLB: probe: Server 192.168.1.51 VLB state changed from 100 to 20
VLB: probe: Server 192.168.1.51 VLB state changed from 20 to 0
VLB: probe: Server 192.168.1.51 VLB state changed from 0 to 1
VLB: probe: Server 192.168.1.51 VLB state changed from 1 to 100
As the messages indicate, Equalizer continually adjusts to changing conditions on the server. Without VLB agents,
Equalizer would not have known about the CPU utilization spike since the ‘ping time’ of the server IP did not
change during this period.
VLB Plotting
The VLB agent return values can be plotted for any virtual machine in a VLB cluster.
1. Click on the server name in the left frame object tree. Select the
Reporting > Plots
tab in the right frame.
2. In the
display
multi-pick box, select
Server Agent
. Select other options as desired (click
Help > Context Help
for descriptions of each setting).
3. Select
plot
to display the graph.
Additional Operational Notes
1.
Failover
: All Equalizer VLB configuration settings are stored in the Equalizer configuration file, and so are
transferred over to the failover peer when the configurations are synchronized.
We recommend that both failover peers run Equalizer VLB. If Equalizer VLB is used in a failover configuration
with an Equalizer that is not running Equalizer VLB, then the
dont transfer
flag must be enabled on both peers.
To view or set this option, select the object at the top of the left frame and then open the
Parameters
tab.
2.
Envoy
: Equalizer VLB operation is transparent to Envoy. In other words, you can use a VLB cluster in a
GeoCluster configuration just like any other cluster.