Zookeeper startup error: Starting zookeeper... already running as process xxx

Zookeeper startup error: Starting zookeeper… already running as process xxx
1. Start zookeeper
./zkServer.sh start
2. Display problem
Starting zookeeper… already running as process xxx
3. Find the data folder and delete zookeeper_server.pid
rm zookeeper_server.pid
4. Again start
./zkServer.sh start
5. success
starting zookeeper ... sTARTED

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Origin blog.csdn.net/DJ_ONE/article/details/109197518