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SpringCloud学习文章，记录学习bug

SpringCloud 中注册中心

SpringCloud 中注册中心

Eureka、zookeeper、Consul

Eureka(Hoxton.SR1 根据org.springCloud依赖版本)

出现加上 instance 服务就注册不上的bug
#  instance:
#    instance-id: payment8002
#    prefer-ip-address: true
#    #Eureka客户端向服务端发送心跳的实际间隔，单位为秒(默认为30秒)
#    lease-renewal-in-seconds: 1
#    #Eureka服务端收到最后一次心跳后等待时间上线，单位为秒(默认为90秒) 超时将剔除服务
#    lease-expiration-duration-in-seconds: 2
误会解除 eureka server清理无效节点的时间间隔，默认60000毫秒，即60秒(这里设置成2秒)
  server:
    #关闭自我保护模式，保证不可用服务被及时删除
    enable-self-preservation: false
    #
    eviction-interval-timer-in-ms: 2000

然后这里的问题是电脑的网络有波动，发送心跳的间隔太低，容易出现断的问题(至少我的电脑经常断，或者说用了这设置一直连不上。。)
可以适当的调整，或者注解以下的代码粗体部分

instance:
instance-id: payment8002
prefer-ip-address: true
#Eureka客户端向服务端发送心跳的实际间隔，单位为秒(默认为30秒)
lease-renewal-in-seconds: 1
#Eureka服务端收到最后一次心跳后等待时间上线，单位为秒(默认为90秒) 超时将剔除服务
lease-expiration-duration-in-seconds: 2

Zookeeper（apache-zookeeper-3.5.9-bin版本）

首先Zookeeper要下载的话，在WIN10要下载bin的，然后要创建data文件夹
Zookeeper需要自己添加一个zoo.cfg，写入相关配置(目前的配置的单机版的能跑，集群没试过)

# 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=C:/software/apache-zookeeper-3.5.9-bin/data
# 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
server.1=127.0.0.1:2888:3888