Users' questions

How to configure Java melody in Tomcat?

by Rhyley Bryan

How to configure Java melody in Tomcat?

Easy steps to Install and configure JAVA Melody in tomcat – Solaris. Step 1: Download the java melody file using the following command to a temporary directory. Step 4: Edit the web. xml file from WEB-INF directory of the war file deployed in the tomcat and add the following lines in the web.

What is Jmelody?

Javamelody is an opensource (LGPL) application to monitor Java or Java EE application servers in QA and production environments. JavaMelody is mainly based on statistics of requests and on evolution charts. (Extract from the Javamelody home page) It allows to improve applications in QA and production.

How to use JavaMelody?

Download the distribution from https://code.google.com/p/javamelody/downloads/list and extract javamelody. jar and jrobin-x. jar, and place them in the WEB_INF/lib directory of the JRS application. Then add the following lines to WEB_INF/web.

How do I disable JavaMelody?

Disabling JavaMelody

  1. disabled=false using the init parameter in web.xml.
  2. pass -Djavamelody.disabled=true as system property.

How can I make Tomcat run faster?

How do I make Tomcat startup faster?

  1. General.
  2. JAR scanning. Configure your web application. Remove unnecessary JARs. Exclude JARs from scanning. Disable WebSocket support.
  3. Entropy Source.
  4. Starting several web applications in parallel.
  5. Other. Memory. Config. Web application.

Where is Apache Tomcat logs?

The main Apache Tomcat configuration file is at /opt/bitnami/tomcat/conf/server. xml. Once Apache Tomcat starts, it will create several log files in the /opt/bitnami/tomcat/logs directory. The main log file is the catalina.

How do you use Glowroot?

Quick start

  1. Download and unzip glowroot-0.13.6-dist.zip.
  2. Add -javaagent:path/to/glowroot. jar to your application’s JVM args [where are my application server’s JVM args?]
  3. Check that the user account that runs the JVM has write access to the glowroot folder.
  4. Start your application.

What is JMX connection?

Java Management Extensions (JMX) technology can be used to monitor and manage any Java technology-based applications (Java applications) that are running in either a local or a remote Java Virtual Machine (JVM). VisualVM is one such JMX client application.

Why does Tomcat take so long to start?

If your Tomcat takes longer to start, it may be due to the random number generator that it is using. You might want to consider forcing it to use ‘/dev/urandom’ rather than the default ‘/dev/random’ that Tomcat uses.

Why is Tomcat slow?

If Tomcat becomes slow to respond (java cannot connect to a database server, or just taking a long time to process a request for any reason) – it brings the whole site down: all static html pages are taking very long time to load (same with images, css, js).

How do I know if Tomcat is running?

Use a browser to check whether Tomcat is running on URL http://localhost:8080 , where 8080 is the Tomcat port specified in conf/server. xml. If Tomcat is running properly and you specified the correct port, the browser displays the Tomcat homepage.

How do I find my Tomcat username and password?

To do this, you’ll need to modify the $CATALINA_BASE/conf/tomcat-users. xml file. You’ll need to restart Tomcat after editing the file above. After restarting Tomcat, you should be able to access the Manager app (http://localhost:8080/manager/html) using username = admin and password = admin.

What kind of JVM does Apache Tomcat use?

Apache Tomcat is a Java servlet container, and is run on a Java Virtual Machine, or JVM. Tomcat utilizes the Java servlet specification to execute servlets generated by requests, often with the help of JSP pages, allowing dynamic content to be generated much more efficiently than with a CGI script.

Where can I find the Tomcat Manager app?

The Tomcat Manager App shows details on current user sessions and allows us to expire sessions manually. 6.1. Via the Web Interface We can view current user sessions by following the link in the Sessions column for all listed applications.

Where can I find the Tomcat connection pool?

Connections can be retrieved from a java.sql.Driver, javax.sql.DataSource or javax.sql.XADataSource This is achieved using the dataSource and dataSourceJNDI attributes. Usage of the Tomcat connection pool has been made to be as simple as possible, for those of you that are familiar with commons-dbcp, the transition will be very simple.

How to monitor the performance of your Tomcat application server?

Javamelody is an opensource (LGPL) application to monitor Java or Java EE application servers in QA and production environments. JavaMelody is mainly based on statistics of requests and on evolution charts. (Extract from the Javamelody home page) It allows to improve applications in QA and production