Solution to the very slow startup of Tomcat service

This article introduces the solution to the very slow startup of the Tomcat service, and focuses on the specific steps. The content of this article is compact, and I hope everyone can gain something.

Tomcat service starts very slowly

Problem symptoms

Tomcat starts very slowly. Check the log as follows.

Cause of the problem

SecureRandom is a problem with the jre tool class.

Solution

Solution in Tomcat environment

You can use non-blocking by configuring JRE Entropy Source.

Add the following content to the catalina.sh file,

-Djava.security.egd=file:/dev/./urandom

After adding it, restart Tomcat, check the Tomcat service startup log, and the startup time will be reduced.

Solved in the JVM environment

Open the file $JAVA_PATH/jre/lib/security/java.security.

Find the following content in the file.

securerandom.source=file:/dev/urandom

Replace the content with the following

securerandom.source=file:/dev/./urandom

Applies to

Cloud Server ECS

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