zk配置后集群選舉失敗，集群中全部無法進行選舉，但是應用又起來了。
先講原因：后經人指點，server的端口配置錯誤導致。server占用了client的端口號導致的。說明server.1=127.0.0.1:2181:3181中2181是server端口但是我又配置了clientPort=2181.把server端口和client端口混為一談導致的（汗顏並吐槽：zk既然配置錯誤了，就不應該讓項目啟動成功，應該直接停止程序或者直接報錯）。
修改zoo.cnf中集群錯誤配置：
server.1=127.0.0.1:2181:3181
server.2=127.0.0.1:2182:3182
server.3=127.0.0.1:2183:3183
為正確配置：
server.1=127.0.0.1:2888:3888
server.2=127.0.0.1:2889:3899
server.3=127.0.0.1:2890:3890
附件：
Exception when following the leader
java.io.EOFException
線上異常截圖：
用zkServer.sh status的狀態命令查看如下：
錯誤配置文件：
# The number of milliseconds of each tick tickTime=2000 # The number of ticks that the initial # synchronization phase can take initLimit=10 # The number of ticks that can pass between # sending a request and getting an acknowledgement syncLimit=5 # the directory where the snapshot is stored. # do not use /tmp for storage, /tmp here is just # example sakes. dataDir=D:/Dev/data/zookeeper/z1 # the port at which the clients will connect clientPort=2181 # the maximum number of client connections. # increase this if you need to handle more clients #maxClientCnxns=60 # # Be sure to read the maintenance section of the # administrator guide before turning on autopurge. # # http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance # # The number of snapshots to retain in dataDir #autopurge.snapRetainCount=3 # Purge task interval in hours # Set to "0" to disable auto purge feature #autopurge.purgeInterval=1 ## Metrics Providers # # https://prometheus.io Metrics Exporter #metricsProvider.className=org.apache.zookeeper.metrics.prometheus.PrometheusMetricsProvider #metricsProvider.httpPort=7000 #metricsProvider.exportJvmInfo=true server.1=127.0.0.1:2181:3181 server.2=127.0.0.1:2182:3182 server.3=127.0.0.1:2183:3183
正確配置：
# The number of milliseconds of each tick tickTime=2000 # The number of ticks that the initial # synchronization phase can take initLimit=10 # The number of ticks that can pass between # sending a request and getting an acknowledgement syncLimit=5 # the directory where the snapshot is stored. # do not use /tmp for storage, /tmp here is just # example sakes. dataDir=D:/Dev/data/zookeeper/z1 # the port at which the clients will connect clientPort=2181 # the maximum number of client connections. # increase this if you need to handle more clients #maxClientCnxns=60 # # Be sure to read the maintenance section of the # administrator guide before turning on autopurge. # # http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance # # The number of snapshots to retain in dataDir #autopurge.snapRetainCount=3 # Purge task interval in hours # Set to "0" to disable auto purge feature #autopurge.purgeInterval=1 ## Metrics Providers # # https://prometheus.io Metrics Exporter #metricsProvider.className=org.apache.zookeeper.metrics.prometheus.PrometheusMetricsProvider #metricsProvider.httpPort=7000 #metricsProvider.exportJvmInfo=true server.1=127.0.0.1:2888:3888 server.2=127.0.0.1:2889:3899 server.3=127.0.0.1:2890:3890