Problem: Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took...

Problem

WARNING [main] org.apache.catalina.util.SessionIdGeneratorBase.createSecureRandom Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [1,139,942] milliseconds.

Solution

Tomcat Configuration[Solution 1]

Append “-Djava.security.egd=file:/dev/./urandom” to JAVA_OPTS in the catalina.sh file[Tomcat 9].

$ vi catalina.sh

# by dijk, changed
# Make the umask available when using the org.apache.catalina.security.SecurityListener
#JAVA_OPTS="$JAVA_OPTS -Dorg.apache.catalina.security.SecurityListener.UMASK=`umask`"
JAVA_OPTS="$JAVA_OPTS -Dorg.apache.catalina.security.SecurityListener.UMASK=`umask` -Djava.security.egd=file:/dev/./urandom"

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Java Configuration[Solution 2]

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

# by dijk, backup
#securerandom.source=file:/dev/random
securerandom.source=file:/dev/./urandom

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Reference

https://blog.youkuaiyun.com/sxhong/article/details/62889003
https://blog.youkuaiyun.com/lanmo555/article/details/51909021