成功解決ZooKeeper配置中出現Error contacting service. It is probably not running

安裝zookeeper時候，可以查看進程啓動，但是狀態顯示報錯：Error contacting service. It is probably not running   安裝zookeeper-3.4.9的時候，啓動正常沒報錯，   但 ./zkServer.sh status查看狀態的時候卻出現錯誤，如下： JMX enabled by default Using config: /opt/

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