zookeeper启动报错:serverid is not a number

问题

启动zookeeper时，启动失败：

查看logs下面的日志，发现了这个错误。

ERROR [main:o.a.z.s.q.QuorumPeerMain@99] - Invalid config, exiting abnormally
org.apache.zookeeper.server.quorum.QuorumPeerConfig$ConfigException: Error processing /Users/tingchang.fan/Downloads/DevelopApplication/zookeeper-cluster/zookeeper-3/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: serverid {\rtf1\ansi\ansicpg936\cocoartf2636 is not a number
	at org.apache.zookeeper.server.quorum.QuorumPeerConfig.setupMyId(QuorumPeerConfig.java:741)
	at org.apache.zookeeper.server.quorum.QuorumPeerConfig.setupQuorumPeerConfig(QuorumPeerConfig.java:660)
	at org.apache.zookeeper.server.quorum.QuorumPeerConfig.parseProperties(QuorumPeerConfig.java:487)
	at org.apache.zookeeper.server.quorum.QuorumPeerConfig.parse(QuorumPeerConfig.java:194)
	... 2 common frames omitted

错误原因

原因是我用的是Mac自带的文本编辑创建的myid文本，但是后面用vi打开myid后发现里面的内容不止是数字：

解决

使用vi，将其他字符删去。
切记：以后创建文件最好用控制台去创建，否则可能会有额外的字符。