Apache Tomcat monitoring for Windows installations

[dlukinski]

We are unable to monitor Apache Tomcat installations done on Windows with XI Tomcat monitoring Wizard
- how to configure Windows installations to work with XI monitoring?

NCPA-based looks this way: UNKNOWN: An error occured connecting to API. (HTTP error: '500 INTERNAL SERVER ERROR')
- ver 2.3.1 / would it be urf8 problem with plans to be fixed only in NCPA 3?

JMX-based is as follows: UNKNOWN: Failed to connect: Failed to retrieve RMIServer stub: javax.naming.ConfigurationException [Root exception is java.rmi.UnknownHostException: Unknown host: XXXXXXXXX: nested exception is:
- seem to be the switch to the random port after the initial connection. Any way to deal with it?

[gsmith]

Hi

First check that the command has been updated with the correct path to java:

Image2.jpg

Next configure your service as:

Image1.jpg

where the arguments are:
$ARG1$:

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-s service:jmx:rmi:///jndi/rmi://192.168.23.82:9010/jmxrmi   -t tomcat -C 'MemorySimpleHeap,MemoryMetaspace,ProcessCPUUsage,SystemCPUUsage,Uptime' -w '17179869184,34359738368,50,70,1500000:' -c '32212254720,68719476736,70,90,300000:'

$ARG2$:

Code: Select all

.

On my system I had to create /usr/local/tomcat/bin/setenv.sh:

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CATALINA_OPTS="-Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=9010 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false -Djava.rmi.server.hostname=192.168.23.82"
JAVA_OPTS="$JAVA_OPTS -Djava.net.preferIPv4Stack=true -Djava.net.preferIPv4Addresses=true "

And on the jmx host I had to open up port 9010 in the firewall.

Let me know how things turn out please.

Thanks

[dlukinski]

We have discovered that Windows Apache does NOT keep communications over the initial port.
It switches to the random port.

Would like to have your opinion on the matter

[gsmith]

Hi,

I missed one of the java_opts you need.

On your Windows Tomcat server you need these options to java when launching Tomcat.

The easiest way to do that is from Start, Tomcat, Configure Tomcat. It must be
written to some file(s) but I didn't track them down right now.

Code: Select all

-Dcatalina.home=C:\Program Files (x86)\Apache Software Foundation\Tomcat 8.5
-Dcatalina.base=C:\Program Files (x86)\Apache Software Foundation\Tomcat 8.5
-Djava.io.tmpdir=C:\Program Files (x86)\Apache Software Foundation\Tomcat 8.5\temp
-Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
-Djava.util.logging.config.file=C:\Program Files (x86)\Apache Software Foundation\Tomcat 8.5\conf\logging.properties
-Dcom.sun.management.jmxremote 
-Dcom.sun.management.jmxremote.port=9010
-Dcom.sun.management.jmxremote.rmi.port=9010
-Dcom.sun.management.jmxremote.ssl=false 
-Dcom.sun.management.jmxremote.authenticate=false 
-Djava.rmi.server.hostname=192.168.23.96
-Djava.net.preferIPv4Stack=true 
-Djava.net.preferIPv4Addresses=true

Adding this second port parameter:
-Dcom.sun.management.jmxremote.rmi.port=9010

is what solves the random port issue.

Thanks