一.删除zookeeper/lib 目录下相关JAR包.

1.删除内容

rm -rf log4j-1.2.16.jar slf4j-api-1.6.1.jar slf4j-log4j12-1.6.1.jar ;

二.加入以下的2.16版本的JAR包

slf4j-api-1.7.30.jar
log4j-slf4j-impl-2.16.0.jar
log4j-core-2.16.0.jar
log4j-api-2.16.0.jar
log4j-1.2-api-2.16.0.jar

三.重启,观察zookeeper.out 报错

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/log4j/jmx/HierarchyDynamicMBean
    at org.apache.zookeeper.jmx.ManagedUtil.registerLog4jMBeans(ManagedUtil.java:50)
    at org.apache.zookeeper.server.ZooKeeperServerMain.initializeAndRun(ZooKeeperServerMain.java:75)
    at org.apache.zookeeper.server.ZooKeeperServerMain.main(ZooKeeperServerMain.java:53)
    at org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:116)
    at org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:78)
    Caused by: java.lang.ClassNotFoundException: org.apache.log4j.jmx.HierarchyDynamicMBean
    at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
    ... 5 more

四.根据ManagedUtil.java,设置zookeeper.jmx.log4j.disable为true;

image.png

五.命令行修改:

将zkServer.sh变量修改为,log4j.configuration指定配置文件,zookeeper.jmx.log4j.disable设置.

ZOOMAIN="-Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.local.only=$JMXLOCALONLY -Dlog4j.configuration=${ZOOBINDIR}/../conf/log4j.properties -Dzookeeper.jmx.log4j.disable=true org.apache.zookeeper.server.quorum.QuorumPeerMain"

六.重启完成:

2021-12-23T15:05:46,933 [myid:] - INFO  [main:ZooKeeperServer@815] - tickTime set to 2000
2021-12-23T15:05:46,934 [myid:] - INFO  [main:ZooKeeperServer@824] - minSessionTimeout set to -1
2021-12-23T15:05:46,934 [myid:] - INFO  [main:ZooKeeperServer@833] - maxSessionTimeout set to -1
2021-12-23T15:05:46,944 [myid:] - INFO  [main:NIOServerCnxnFactory@89] - binding to port 0.0.0.0/0.0.0.0:2181

如何将Zookeeper的log4j升级到2.16？