Welcome!

Java IoT Authors: Elizabeth White, Liz McMillan, Yeshim Deniz, Pat Romanski, Thanh Tran

Related Topics: Java IoT, Industrial IoT, Microservices Expo, IBM Cloud, Eclipse, Apache

Java IoT: Blog Feed Post

Configuring JMX in WebSphere 8.5

Historically most JMX implementations used the simple JMXMP protocol as the underlying transport

Like most application servers, WebSphere 8.5 has a rich management infrastructure based on JMX, or Java Management Extensions. In fact, the WebSphere administration console uses JMX to connect to the server to issue queries and perform administrative operations. In a previous post I showed you how to secure JBoss’ JMX connector. While there is a lot of information out there on how to connect to WebSphere via JMX, most of the examples involve either disabling SSL, or worse – disabling security globally. So let’s see how we can access WebSphere’s JMX connector remotely in a secure way. Like most things WebSphere, this could look very daunting at first, but once done, you will have a reliable and secure setup.

First, a Little Background
Historically most JMX implementations used the simple JMXMP protocol as the underlying transport. The newer versions of the the JMX Spec stipulate that each implementation should support RMI as a transport. As a result, both WebSphere and JBoss have moved away from JMXMP connectors in favor of RMI connectors for JMX. To complicate things even further, WebSphere’s version of RMI works on top of IIOP (and not JRMP as most RMI servers do). In practice, this means that any RMI client (including JMX clients) connecting to WebSphere should use some WebSphere-specific jar files on the classpath. Additionally, because RMI/IIOP uses SSL, we need to specify the correct path to the server’s keystore and trust store where the client and server SSL keys are stored.

Enabling the JMX Connector in WebSphere
For the rest of this post, we are going to assume the following:

  • WebSphere 8.5 is installed in /opt/IBM/WebSphere
  • You have created an application server node named server1, which is up and running
  • The administration console is deployed
  • You have the administrative credentials

Step 1. Log on to the Admin Console

Open a web browser, go to https://localhost:9043/ibm/console and log in with your administrative user and password:

Step 2. Navigate to the server settings:

From the menu on the left, go to Servers > Server Types > WebSphere Application Servers.

Step 3. Click on your server (default is server1) and select the Configuration tab.

Step 4. Scroll down to the Server Infrastructure section and expand Administration and select Administration Services

Step 5. Enable JSR160 RMI JMX Connector. Select JMX Connectors, then check JSR160RMIConnector and click Enable. When prompted, select Save to Master Configuration:

Step 6. Verify the IIOP Port Number Go back to the server page (see steps 2&3), but this time click on Ports (under the Communications heading). Make a note of the ORB_LISTENER_ADDRESS value (default is 9100)

Step 7. Restart the server. From the command line, go to your server profile folder, e.g.

[[email protected] bin]cd /opt/IBM/WebSphere/AppServer/profiles/AppSrv01/bin
[[email protected] bin]sudo ./stopServer.sh server1
ADMU0116I: Tool information is being logged in file
           /opt/IBM/WebSphere/AppServer/profiles/AppSrv01/logs/server1/stopServer.log
ADMU0128I: Starting tool with the AppSrv01 profile
ADMU3100I: Reading configuration for server: server1
ADMU3201I: Server stop request issued. Waiting for stop status.
ADMU4000I: Server server1 stop completed.

[[email protected] bin]$ sudo ./startServer.sh server1 
ADMU0116I: Tool information is being logged in file
           /opt/IBM/WebSphere/AppServer/profiles/AppSrv01/logs/server1/startServer.log
ADMU0128I: Starting tool with the AppSrv01 profile
ADMU3100I: Reading configuration for server: server1
ADMU3200I: Server launched. Waiting for initialization status.
ADMU3000I: Server server1 open for e-business; process id is 13397

After what seems like an eternity, your server will come up.

Step 8. Verify that the server is listening on port 9100:

[[email protected] ~]$ netstat -an | grep 9100
tcp        0      0 :::9100                     :::*                        LISTEN

Running JConsole
JConsole is the generic JMX console provided with the Java SDK. It is expected to work with any MBean server. On the other WebSphere’s MBean server exposes WebSphere-specific objects.  For this reason, we need to tweak the environment a little bit in order to make the WebSphere-specific classed known to JConsole. There are also some SSL-specific client and server keys (stored in a key store) that the JMX client needs to establish an SSL connection to the server. We will do all this (and more) with a simple shell script (be sure to change the PORT variable to match ORB_LISTENER_ADDRESS, and also to specify the correct IP address). After the script sets up the environment variables, it invokes the jconsole client bundled with the IBM JDK installed in the WebSphere directory:

#!/bin/bash

WAS_HOME=/opt/IBM/WebSphere/AppServer

# setup server-specific env variables
. $WAS_HOME/profiles/AppSrv01/bin/setupCmdLine.sh

#HOST=localhost
HOST=192.168.24.129 # Change this as needed
PORT=9100 

CLASSPATH=$JAVA_HOME/lib/jconsole.jar
CLASSPATH=$CLASSPATH:$WAS_HOME/runtimes/com.ibm.ws.admin.client_8.5.0.jar
CLASSPATH=$CLASSPATH:$WAS_HOME/runtimes/com.ibm.ws.ejb.thinclient_8.5.0.jar
CLASSPATH=$CLASSPATH:$WAS_HOME/runtimes/com.ibm.ws.orb_8.5.0.jar

$JAVA_HOME/bin/jconsole \
        -J-Djava.class.path=$CLASSPATH\
        -J$CLIENTSAS\
        -J$CLIENTSSL\
        service:jmx:iiop://$HOST:$PORT/jndi/JMXConnector

Once you run the script, JConsole should open and connect to the server. Enter your administrator credentials when prompted:

Feel free to explore the properties and administrative operations provided by the server:

In a future post, we will take things a step further by using the Monitis JMX monitor to gather metrics from WebSphere and upload them to your Monitis account. Until then, happy monitoring!

Read the original blog entry...

More Stories By Hovhannes Avoyan

Hovhannes Avoyan is the CEO of PicsArt, Inc.,

@ThingsExpo Stories
SYS-CON Events announced today that MobiDev will exhibit at SYS-CON's 18th International Cloud Expo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, NY. MobiDev is a software company that develops and delivers turn-key mobile apps, websites, web services, and complex software systems for startups and enterprises. Since 2009 it has grown from a small group of passionate engineers and business managers to a full-scale mobile software company with over 200 develope...
WebRTC is bringing significant change to the communications landscape that will bridge the worlds of web and telephony, making the Internet the new standard for communications. Cloud9 took the road less traveled and used WebRTC to create a downloadable enterprise-grade communications platform that is changing the communication dynamic in the financial sector. In his session at @ThingsExpo, Leo Papadopoulos, CTO of Cloud9, will discuss the importance of WebRTC and how it enables companies to fo...
Companies can harness IoT and predictive analytics to sustain business continuity; predict and manage site performance during emergencies; minimize expensive reactive maintenance; and forecast equipment and maintenance budgets and expenditures. Providing cost-effective, uninterrupted service is challenging, particularly for organizations with geographically dispersed operations.
SYS-CON Events announced today that MangoApps will exhibit at SYS-CON's 18th International Cloud Expo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, NY. MangoApps provides modern company intranets and team collaboration software, allowing workers to stay connected and productive from anywhere in the world and from any device. For more information, please visit https://www.mangoapps.com/.
SYS-CON Events announced today TechTarget has been named “Media Sponsor” of SYS-CON's 18th International Cloud Expo, which will take place on June 7–9, 2016, at the Javits Center in New York City, NY, and the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. TechTarget is the Web’s leading destination for serious technology buyers researching and making enterprise technology decisions. Its extensive global networ...
SYS-CON Events announced today that EastBanc Technologies will exhibit at SYS-CON's 18th International Cloud Expo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, NY. EastBanc Technologies has been working at the frontier of technology since 1999. Today, the firm provides full-lifecycle software development delivering flexible technology solutions that seamlessly integrate with existing systems – whether on premise or cloud. EastBanc Technologies partners with p...
SYS-CON Events announced today that Tintri Inc., a leading producer of VM-aware storage (VAS) for virtualization and cloud environments, will exhibit at the 18th International CloudExpo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, New York, and the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA.
SYS-CON Events announced today that BMC Software has been named "Siver Sponsor" of SYS-CON's 18th Cloud Expo, which will take place on June 7-9, 2015 at the Javits Center in New York, New York. BMC is a global leader in innovative software solutions that help businesses transform into digital enterprises for the ultimate competitive advantage. BMC Digital Enterprise Management is a set of innovative IT solutions designed to make digital business fast, seamless, and optimized from mainframe to mo...
A strange thing is happening along the way to the Internet of Things, namely far too many devices to work with and manage. It has become clear that we'll need much higher efficiency user experiences that can allow us to more easily and scalably work with the thousands of devices that will soon be in each of our lives. Enter the conversational interface revolution, combining bots we can literally talk with, gesture to, and even direct with our thoughts, with embedded artificial intelligence, wh...
SYS-CON Events announced today that Alert Logic, Inc., the leading provider of Security-as-a-Service solutions for the cloud, will exhibit at SYS-CON's 18th International Cloud Expo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, NY. Alert Logic, Inc., provides Security-as-a-Service for on-premises, cloud, and hybrid infrastructures, delivering deep security insight and continuous protection for customers at a lower cost than traditional security solutions. Ful...
The IoT is changing the way enterprises conduct business. In his session at @ThingsExpo, Eric Hoffman, Vice President at EastBanc Technologies, discuss how businesses can gain an edge over competitors by empowering consumers to take control through IoT. We'll cite examples such as a Washington, D.C.-based sports club that leveraged IoT and the cloud to develop a comprehensive booking system. He'll also highlight how IoT can revitalize and restore outdated business models, making them profitable...
The essence of data analysis involves setting up data pipelines that consist of several operations that are chained together – starting from data collection, data quality checks, data integration, data analysis and data visualization (including the setting up of interaction paths in that visualization). In our opinion, the challenges stem from the technology diversity at each stage of the data pipeline as well as the lack of process around the analysis.
SYS-CON Events announced today that Commvault, a global leader in enterprise data protection and information management, has been named “Bronze Sponsor” of SYS-CON's 18th International Cloud Expo, which will take place on June 7–9, 2016, at the Javits Center in New York City, NY, and the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. Commvault is a leading provider of data protection and information management...
Designing IoT applications is complex, but deploying them in a scalable fashion is even more complex. A scalable, API first IaaS cloud is a good start, but in order to understand the various components specific to deploying IoT applications, one needs to understand the architecture of these applications and figure out how to scale these components independently. In his session at @ThingsExpo, Nara Rajagopalan is CEO of Accelerite, will discuss the fundamental architecture of IoT applications, ...
With major technology companies and startups seriously embracing IoT strategies, now is the perfect time to attend @ThingsExpo 2016 in New York and Silicon Valley. Learn what is going on, contribute to the discussions, and ensure that your enterprise is as "IoT-Ready" as it can be! Internet of @ThingsExpo, taking place Nov 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA, is co-located with 17th Cloud Expo and will feature technical sessions from a rock star conference faculty ...
As cloud and storage projections continue to rise, the number of organizations moving to the cloud is escalating and it is clear cloud storage is here to stay. However, is it secure? Data is the lifeblood for government entities, countries, cloud service providers and enterprises alike and losing or exposing that data can have disastrous results. There are new concepts for data storage on the horizon that will deliver secure solutions for storing and moving sensitive data around the world. ...
18th Cloud Expo, taking place June 7-9, 2016, at the Javits Center in New York City, NY, will feature technical sessions from a rock star conference faculty and the leading industry players in the world. Cloud computing is now being embraced by a majority of enterprises of all sizes. Yesterday's debate about public vs. private has transformed into the reality of hybrid cloud: a recent survey shows that 74% of enterprises have a hybrid cloud strategy. Meanwhile, 94% of enterprises are using some...
SoftLayer operates a global cloud infrastructure platform built for Internet scale. With a global footprint of data centers and network points of presence, SoftLayer provides infrastructure as a service to leading-edge customers ranging from Web startups to global enterprises. SoftLayer's modular architecture, full-featured API, and sophisticated automation provide unparalleled performance and control. Its flexible unified platform seamlessly spans physical and virtual devices linked via a world...
In his keynote at 18th Cloud Expo, Andrew Keys, Co-Founder of ConsenSys Enterprise, will provide an overview of the evolution of the Internet and the Database and the future of their combination – the Blockchain. Andrew Keys is Co-Founder of ConsenSys Enterprise. He comes to ConsenSys Enterprise with capital markets, technology and entrepreneurial experience. Previously, he worked for UBS investment bank in equities analysis. Later, he was responsible for the creation and distribution of life ...
In his session at 18th Cloud Expo, Bruce Swann, Senior Product Marketing Manager at Adobe, will discuss how the Adobe Marketing Cloud can help marketers embrace opportunities for personalized, relevant and real-time customer engagement across offline (direct mail, point of sale, call center) and digital (email, website, SMS, mobile apps, social networks, connected objects). Bruce Swann has more than 15 years of experience working with digital marketing disciplines like web analytics, social med...