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Using Docker to efficiently create multiple tomcat instances

Using Docker to efficiently create multiple tomcat instances

In my previous blog article I gave a short introduction into Docker (“an open-source engine that automates the deployment of any application as a lightweight, portable, self-sufficient container that will run virtually anywhere”). In this article we’ll check out how to create an image for Tomcat 7 and the Java 7 JDK as dependency. So, let’s […]

Debugging the dreaded “SEVERE: Error listenerStart” and “SEVERE: Error filterStart” tomcat error messages

Just a quick post that I hope might benefit others. If you have been developing web applications on tomcat for a while you have likely come the two error messages mentioned in the title. SEVERE: Error listenerStart Occurs when an exception is thrown in the contextInitialized method of a ServletContextListener SEVERE: Error filterStart Occurs when an […]