Enabling the use of real-time JVM monitoring tools like jconsole and VisualVM can be extremely beneficial when troubleshooting issues. These tools work by enabling a JMX/RMI communication channel to the JVM. These are typically thought of as local development tools, but they can also be used on remote CF containers running Java. In this article, … CloudFoundry: Enabling Java JMX/RMI access for remote containers
Java thread and heap dumps are valuable tools for troubleshooting local development, but they can also be used on remote CF containers running a JVM. In this article, we’ll go through various method of gathering this data from a Cloud Foundry container and then tools for analyzing this data. Now matter how uniform your environments, … CloudFoundry: Java thread and heap dump analysis on remote containers
tcpdump comes standard on Ubuntu servers and is an invaluable tool in determining traffic coming in and out of a host. As network infrastructures have become more complex and security conscious, validating network flow from client hosts through potentially multiple proxies and ultimately to a destination host and port has become more important than ever. … Ubuntu: Using tcpdump for analysis of network traffic and port usage