# cp target/cas.war /var/lib/tomcat8/webapps/ # cat /usr/share/tomcat8/bin/setenv.sh export CATALINA_OPTS="$CATALINA_OPTS -Xms512m" export CATALINA_OPTS="$CATALINA_OPTS -Xmx4096m" export CATALINA_OPTS="$CATALINA_OPTS -XX:MaxPermSize=256m"