Agent Installation for Java

Follow the below mentioned steps for application agent (ND) Installation:

NDHome Directory Creation

  1. Create Installation directory for NetDiagnostics. For example /opt/cavisson/netdiagnostics
  2. Copy NetDiagnostics tar file to NDHome directory.
  3. Un-tar <#release>.<#build>.tar.gz file in same directory.
  4. After installation, contents in this director is as below:
drwxr-xr-x 3 netstorm_1 netstorm 4096 Mar 25 20:26 gui
drwxr-xr-x 3 netstorm_1 netstorm 4096 Mar 25 20:26 thirdparty
drwxr-xr-x 2 netstorm_1 netstorm 4096 Mar 25 20:26 schema
drwxr-xr-x 5 netstorm_1 netstorm 4096 Mar 25 20:26 samples
drwxr-xr-x 2 netstorm_1 netstorm 4096 Mar 25 20:26 logs
drwxr-xr-x 2 netstorm_1 netstorm 4096 Mar 25 20:26 lib
drwxr-xr-x 2 netstorm_1 netstorm 4096 Mar 25 20:26 etc
drwxr-xr-x 2 netstorm_1 netstorm 4096 Mar 25 20:26 config
 NoteMake Sure NDHome directory should have read and write permission for Application instances.NDHome is the Home directory of ND Agent [path where ND agent is installed] Example /opt/cavisson/netdiagnostics

Application Agent (ND) Configuration

Follow the below mentioned steps for application agent (ND) configuration:

Config File Creation

Create Config file under NDHome/config directory named ndsettings_<agentId>.conf and it should contain below content.

tier=TierName
ndcHost=NDCHost
ndcPort=NDCPort

For Example:

For profiling single application on a VM, config file name is ndsettings_1.conf.

Sample content:

tier=MongoDB
ndcHost=10.206.249.62
ndcPort=7892

For profiling two applications on a VM, config file name should be as follows.

ndsettings_1.conf (For 1st application)
ndsettings_2.conf (For 2nd application)

Content of both file should be same, as VM is hosting single type of application.

Application Argument Setup

Add below argument in application Java options:

-javaagent:<NDHome>/lib/ndmain.jar=time,ndHome=<NDHome>, 
ndAgentJar=<NDHome>/lib/ndagent-with-dep.jar,agentId=<agentId>

For Example:

For single application running in VM, specify jars and agentId. AgentId in this case is 1.

-javaagent:<ndHome>/lib/main.jar=time,ndHome=<ndHome>,
ndAgentJar=<ndHome>/lib/ndagent-with-deb.jar,agentId =1

In case of multiple applications running on VM, which need to be profiled:

For Application – 1

-javaagent:<ndHome>/lib/main.jar=time,ndHome=<ndHome>,
ndAgentJar=<ndHome>/lib/ndagent-with-deb.jar,agentId =1

For Application – 2

-javaagent:<ndHome>/lib/main.jar=time,ndHome=<ndHome>,
ndAgentJar=<ndHome>/lib/ndagent-with-deb.jar,agentId =2

If application to be profiled is running inside container:

  1. User needs to mount cavisson home directory (Cav_Home) /opt/cavisson in this container.
  2. User needs to specify above mentioned arguments in java application options.