Java HotSpot(TM) 64-Bit Server VM warning: ignoring option PermSize=1024M; support was removed in 8.0

Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=1024M; support was removed in 8.0

jdk8中tomcat修改配置PermSize为MetaspaceSize

JDK8中用MetaspaceSize代替PermSize，因此在许多我们设置PermSize大小的地方同样需要修改配置为MetaspaceSize

将-XX:PermSize=1024M -XX:MaxPermSize=1024M;

修改为：-XX:MetaspaceSize=1024M -XX:MaxMetaspaceSize=1024M ；

文件：/opt/tomcat/bin/catalina.sh

JAVA_OPTS="-server -Xms2048m -Xmx2048m -XX:PermSize=1024M -XX:MaxNewSize=1024M -XX:MaxPermSize=1024M -Djava.awt.headless=true"

改为：

JAVA_OPTS="-server -Xms2048m -Xmx2048m -XX:MetaspaceSize=1024M -XX:MaxNewSize=1024M -XX:MaxMetaspaceSize=1024M -Djava.awt.headless=true"