Specifications

Chapter 7: Monitoring Equalizer Operation
112 Equalizer Installation and Administration Guide
3. Select Plot GeoCluster History from the local menu in the Geographic Cluster Parameters
frame. The graphical history for the selected cluster appears in the right frame. By default, the
site summary for the previous 30 minutes appears.
4. To change the information being plotted, select the categories and duration to be plotted; then
click the Plot button. (To zoom in on a portion of the graph, click the area in which you are
interested.)
Displaying Site Information
If you have installed Envoy, you can view configuration and status information for particular sites in
a geographic cluster.
To view the information for a particular site, follow these steps:
1. Log into the Equalizer Administration Interface in either view or edit mode.
2. In the left frame, click the name of the site whose information you want to view. The Site
Parameters page appears in the right frame.
The Site Parameters page displays the following site parameters:
• Geographic Cluster is the name of the geographic cluster to which this site belongs.
• Site is the name of the target site.
• Site IP Address is the site’s IP address.
• Static Weight shows the static weight assigned to the site.
• Default Site indicates whether the target site is the default site.
• Resource shows the IP address and port of the resource being monitored for this site.
• Agent’s Address is the IP address of the Equalizer agent running on the site.
• Resource Keepalive shows the number of seconds between resource availability checks. If a
resource fails its availability check, its site will not be returned to clients. Even after a
resource is declared dead, Equalizer performs availability checks to determine when the
resource is restored.
In addition to the site parameters, the site’s current status appears as follows:
• Resource Load shows the load on the above resource that the Equalizer agent calculates. The
load incorporates data on resource response time, number of active requests, and load-
balancing variables.
• Agent Retries shows the number of probes Equalizer re-sent to its agent.
• Agent Misses shows the number of Equalizer-to-agent probes that received no response.
Interruptions in network connectivity between the Equalizer server and site agents and site
failures can result in missed probes.
• Triangulation Time-outs indicates the number of agent-to-client triangulation probes that
timed out before Equalizer received a response.
• Resource Errors indicates the number of Equalizer-to-agent probes that returned a resource-
unavailable error. If the Envoy on the remote site determines that the requested resource is
unavailable, it returns a resource unavailable error.