启动集群时失败

启动集群报如下错：

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3

ZooKeeper JMX enabled by default
Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg
Starting zookeeper ... FAILED TO START

这个报错没有参考价值。

查看日志文件（cat $ZOOKEEPER_HOME/logs/zookeeper-hadoop103-server-hadoop103.out，就是logs下的.out文件，你的路径可能和我不一样哦）：

如果报错内容类似：

org.apache.zookeeper.server.quorum.QuorumPeerConfig$ConfigException: Address unresolved: hadoop105:3888
	at org.apache.zookeeper.server.quorum.QuorumPeer$QuorumServer.initializeWithAddressString(QuorumPeer.java:358)
	at org.apache.zookeeper.server.quorum.QuorumPeer$QuorumServer.<init>(QuorumPeer.java:279)
	at org.apache.zookeeper.server.quorum.QuorumPeer$QuorumServer.<init>(QuorumPeer.java:274)
	at org.apache.zookeeper.server.quorum.flexible.QuorumMaj.<init>(QuorumMaj.java:92)
	at org.apache.zookeeper.server.quorum.QuorumPeerConfig.createQuorumVerifier(QuorumPeerConfig.java:658)
	at org.apache.zookeeper.server.quorum.QuorumPeerConfig.parseDynamicConfig(QuorumPeerConfig.java:689)
	at org.apache.zookeeper.server.quorum.QuorumPeerConfig.setupQuorumPeerConfig(QuorumPeerConfig.java:663)
	at org.apache.zookeeper.server.quorum.QuorumPeerConfig.parseProperties(QuorumPeerConfig.java:491)
	at org.apache.zookeeper.server.quorum.QuorumPeerConfig.parse(QuorumPeerConfig.java:194)
	at org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:125)
	at org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:91)
Invalid config, exiting abnormally
2023-01-30 04:20:57,810 [myid:] - INFO  [main:ZKAuditProvider@42] - ZooKeeper audit is disabled.
2023-01-30 04:20:57,811 [myid:] - ERROR [main:ServiceUtils@48] - Exiting JVM with code 2

即表示可能是zoo.cfg配置文件出错了。

需要把后面的空格都删除掉，我是多加了空格。

####################### cluster ########################## 
server.3=hadoop103:2888:3888
server.4=hadoop104:2888:3888
server.5=hadoop105:2888:3888

就是这一步。

修改完配置文件，单独分发配置文件：

1	xsync $ZOOKEEPER_HOME/conf/zoo.cfg

如果日志文件类似：

org.apache.zookeeper.server.quorum.QuorumPeerConfig$ConfigException: Error processing /usr/local/zookeeper/bin/../conf/zoo.cfg
	at org.apache.zookeeper.server.quorum.QuorumPeerConfig.parse(QuorumPeerConfig.java:198)
	at org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:125)
	at org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:91)
Caused by: java.lang.IllegalArgumentException: myid file is missing
	at org.apache.zookeeper.server.quorum.QuorumPeerConfig.checkValidity(QuorumPeerConfig.java:796)
	at org.apache.zookeeper.server.quorum.QuorumPeerConfig.setupQuorumPeerConfig(QuorumPeerConfig.java:667)
	at org.apache.zookeeper.server.quorum.QuorumPeerConfig.parseProperties(QuorumPeerConfig.java:491)
	at org.apache.zookeeper.server.quorum.QuorumPeerConfig.parse(QuorumPeerConfig.java:194)
	... 2 more
Invalid config, exiting abnormally
2023-01-30 07:49:35,165 [myid:] - INFO  [main:ZKAuditProvider@42] - ZooKeeper audit is disabled.
2023-01-30 07:49:35,166 [myid:] - ERROR [main:ServiceUtils@48] - Exiting JVM with code 2