WebLogic Clusters Test

This test extracts cluster related statistics from a managed WebLogic server that is part of a cluster. Server instances in a cluster communicate with each other using multicast—multicasts help the server instances in a cluster announce their services, and issue periodic heartbeats that indicate continued availability. This test is disabled by default. To enable the test, go to the enable / disable tests page using the menu sequence : Agents -> Tests -> Enable/Disable, pick Oracle WebLogic as the desired Component type, set Performance as the Test type, choose the test from the disabled tests list, and click on the < button to move the test to the ENABLED TESTS list. Finally, click the Update button.

Target of the test : A WebLogic Application Server

Agent deploying the test : An internal agent

Outputs of the test : One set of results for every WebLogic server monitored.

Configurable parameters for the test
Parameter Description

Test Period

How often should the test be executed.

Host

The IP address of the host for which this test is to be configured.

Port

The port at which the specified host listens. By default, this is NULL.

User

The admin user name of the WebLogic server being monitored.

AdminServerHost and AdminServerPort

In some highly secured environments, the eG agent may not be able to collect certain critical metrics related to JDBC from a managed WebLogic server. In such cases, to enable the eG agent to collect the required metrics, you should specify the IP address and Port of the WebLogic admin server to which the managed WebLogic server is associated with. This will enable the eG agent to connect to the WebLogic admin server and collect the required metrics pertaining to the managed WebLogic server. Specify the IP address and Port of the WebLogic admin server in the AdminServerHost and AdminServerPort text boxes. By default, these parameters are set to none.

JSPTimeOut

Specify the duration (in seconds) within which the eG agent should receive the response from the eGurkha WAR file deployed on the WebLogic server in this text box. By default, this is set to is 120 seconds.

Password

The password of the specified admin user.

Confirm Password

Confirm the password by retyping it here.

EncryptPass

If the specified password needs to be encrypted, set the EncryptPass flag to Yes. Otherwise, set it to No. By default, the Yes option will be selected.

Note:

If the UseWarFile flag is set to No, then make sure that the EncryptPass flag is also set to No.

SSL

Indicate whether the SSL (Secured Socket Layer) is to be used to connect to the WebLogic server.

Server

The name of the specific server instance to be monitored for a WebLogic server (the default value is "localhome")

URL

The URL to be accessed to collect metrics pertaining to the WebLogic server. By default, this test connects to a managed WebLogic server and attempts to obtain the metrics of interest by accessing the local Mbeans of the server. This parameter can be changed to a value of http://<adminserverIP>:<adminserverPort>. In this case, the test connects to the WebLogic admin server to collect metrics pertaining to the managed server (specified by the Host and Port). The URL setting provides the administrator with the flexibility of determining the WebLogic monitoring configuration to use.

Note:

If the admin server is to be used for collecting measures for all the managed WebLogic servers, then it is mandatory that the egurkha war file is deployed to the admin server, and it is up and running. 

Version

The Version text box indicates the version of the Weblogic server to be managed. The default value is "none", in which case the test auto-discovers the weblogic version. If the value of this parameter is not "none", the test uses the value provided (e.g., 7.0) as the weblogic version (i.e., it does not auto-discover the weblogic server version). This parameter has been added to address cases when the eG agent is not able to discover the WebLogic server version.

UseWarFile

This flag indicates whether/not monitoring is to be done using a Web archive file deployed on the WebLogic server (in which case, HTTP/HTTPS is used by the server to connect to the server). If this flag is set to No, the agent directly connects to the WebLogic server using the T3 protocol (no other file needs to be deployed on the WebLogic server for this to work). Note that the T3 protocol-based support is available for WebLogic servers ver.9 and above. Also, if the UseWarFile parameter is set to No, make sure that the EncryptPass parameter is set to No as well.  

When monitoring a WebLogic server deployed on a Unix platform particularly, if the UseWarFile parameter is set to No, you have to make sure that the eG agent install user is added to the WebLogic users group.

WebLogicJARLocation

Specify the location of the WebLogic server's java archive (Jar) file. If the UseWarFile flag is set to No, then the weblogic.jar file specified here is used to connect to the corresponding WebLogic server using the T3 protocol. Note that the T3 protocol-based support is available for WebLogic servers ver.9 and above.

Measurements made by the test
Measurement Description Measurement Unit Interpretation

Alive servers

Number of servers in the clusters that are running currently

Number

Ideally this number must be equal to the actual number of servers in the cluster.

Fragments sent

The rate of multicast fragments sent from this server into the cluster

Fragments/Sec

 

Fragments received

Returns the rate of multicast messages received on this server from the cluster

Fragments/Sec

 

Fragments dropped

Indicates the rate of fragments that originated in foreign domains/clusters that use the same multicast address

Fragments/Sec

 

Messages lost

Returns the rate at which incoming multicast messages that were lost

Msgs/Sec

 

Request resends

Returns the rate of state-delta messages that had to be resent because a receiving server in the cluster missed a message

Reqs/sec

 

Primary count

Returns the number of objects that the local server hosts as primaries

Number