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Measures reported by CpsLBCStHttpTest
A virtual cluster is a collection of server pools with a single network-visible IP address. All client requests come into Equalizer through a cluster IP address, and are routed by Equalizer to an appropriate server, according to the load balancing options set on the cluster. A cluster is defined after determining the IP addresses for use by the cluster and the Cluster types appropriate for the target configuration. There are five different cluster types that are supported by the Coyote Load Balancer. They are:
- Layer 4 TCP cluster
- Layer 7 TCP cluster
- Layer 4 UDP cluster
- Layer 7 HTTP cluster
- Layer 7 HTTPS cluster
This test monitors the connections, data traffic, compressed data traffic and compressed HTTP responses for each HTTP cluster i.e., the cluster based on the HTTP protocol. Using the metrics of this test, administrators can promptly detect load imbalances and quickly resolve the issue before any serious discrepancies occur.
The measures made by this test are as follows:
| Measurement |
Description |
Measurement Unit |
Interpretation |
| Http_total_conns |
Indicates the total number of connections that are available for this HTTP cluster. |
Number |
If a sudden/consistent increase in the value of this measure is noticed, you might have to investigate further to identify the reason for this occurrence. |
| Http_active_conns |
Indicates the number of connections that are currently active on this HTTP cluster. |
Number |
This measure indicates the connection load on the server. By observing the graph of this measure over time, you can analyze the rate of growth of the load on the server. By comparing the value of this measure across all the clusters, you can instantly identify overloaded clusters; this in turn brings irregularities in load balancing to light. |
| Http_conn_usage |
Indicates the percentage of connections that were used by this HTTP cluster. |
Percent |
|
| Http_total_trans |
Indicates the total number of transactions performed by this HTTP cluster. |
Number |
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| Http_receive |
Indicates the amount of data received by this HTTP cluster. |
KB |
Comparing the values of these measures across the clusters will help you identify the cluster that is the busiest in the Coyote Load Balancer. This in turn, helps the administrators to identify load balancing irregularities, if any. |
| Http_sent |
Indicates the amount of data transmitted from this HTTP cluster. |
KB |
| Http_current_compressed |
Indicates the number of HTTP responses that were currently compressed by this HTTP cluster. |
Number |
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| Http_total_compressed |
Indicates the total number of HTTP responses that wre compressed by this HTTP cluster sice the start of the Coyote Load Balancer. |
Number |
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| Http_compress_input |
Indicates the amount of compressed data received by this HTTP cluster. |
KB |
Comparing the values of these measures across the clusters will help you identify the cluster that is the most busy cluster in terms of transmitting/receiving compressed data. This in turn, helps the administrators to identify load balancing irregularities, if any. |
| Http_compress_output |
Indicates the amount of compressed data transmitted through this HTTP cluster. |
KB |
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