查看zookeeper是否启动

可以通过以下命令来检查zookeeper是否启动：

ps -ef | grep zookeeper

如果看到类似下面的输出，则说明zookeeper正在运行：

zookeeper  12345     1  0 00:00 ?        00:00:00 /usr/bin/java -Dzookeeper.log.dir=/var/log/zookeeper -Dzookeeper.root.logger=INFO,ROLLINGFILE -Djava.io.tmpdir=/var/lib/zookeeper -cp /etc/zookeeper/conf:/usr/share/java/jline.jar:/usr/share/java/log4j-1.2.jar:/usr/share/java/xercesImpl.jar:/usr/share/java/xmlParserAPIs.jar:/usr/share/java/netty.jar:/usr/share/java/slf4j-api.jar:/usr/share/java/slf4j-log4j12.jar:/usr/share/java/zookeeper.jar org.apache.zookeeper.server.quorum.QuorumPeerMain /etc/zookeeper/conf/zoo.cfg

如果没有输出，则说明zookeeper没有启动。