Zookeeper安装及使用

Windows下安装

下载并安装

• 在zookeeper官网找到最新的稳定版本tar.gz
  
• 解压到本地，并在根目录创建一个data文件夹
  

修改配置

• 进入conf目录中，将zoo_sample.cfg修改为zoo.cfg，zoo.cfg是zookeeper的配置文件。
• 修改配置，将用于存储内存数据库快照文件dataDir指定到刚才创建的data目录，注意windows下的路径分隔符为/，修改后的zoo.cfg如下

  # 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=F:/DevResource/apache-zookeeper-3.7.1-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
  
  ## Metrics Providers
  #
  # https://prometheus.io Metrics Exporter
  #metricsProvider.className=org.apache.zookeeper.metrics.prometheus.PrometheusMetricsProvider
  #metricsProvider.httpPort=7000
  #metricsProvider.exportJvmInfo=true
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  启动服务器（单机版）

  • 在bin目录下执行zkServer.cmd
    
    启动成功！

启动异常

问题1：端口占用
2022-08-30 17:29:44,107 [myid:] - INFO [main:Environment@98] - Server environment:java.io.tmpdir=C:\Users\hucong\AppData\Local\Temp\ 2022-08-30 17:29:44,107 [myid:] - INFO [main:Environment@98] - Server environment:java.compiler= 2022-08-30 17:29:44,108 [myid:] - INFO [main:Environment@98] - Server environment:os.name=Windows 10 2022-08-30 17:29:44,108 [myid:] - INFO [main:Environment@98] - Server environment:os.arch=amd64 2022-08-30 17:29:44,109 [myid:] - INFO [main:Environment@98] - Server environment:os.version=10.0 2022-08-30 17:29:44,109 [myid:] - INFO [main:Environment@98] - Server environment:user.name=hucong 2022-08-30 17:29:44,109 [myid:] - INFO [main:Environment@98] - Server environment:user.home=C:\Users\hucong 2022-08-30 17:29:44,110 [myid:] - INFO [main:Environment@98] - Server environment:user.dir=F:\DevResource\apache-zookeeper-3.7.1-bin\bin 2022-08-30 17:29:44,110 [myid:] - INFO [main:Environment@98] - Server environment:os.memory.free=196MB 2022-08-30 17:29:44,110 [myid:] - INFO [main:Environment@98] - Server environment:os.memory.max=3156MB 2022-08-30 17:29:44,111 [myid:] - INFO [main:Environment@98] - Server environment:os.memory.total=213MB 2022-08-30 17:29:44,111 [myid:] - INFO [main:ZooKeeperServer@138] - zookeeper.enableEagerACLCheck = false 2022-08-30 17:29:44,112 [myid:] - INFO [main:ZooKeeperServer@151] - zookeeper.digest.enabled = true 2022-08-30 17:29:44,112 [myid:] - INFO [main:ZooKeeperServer@155] - zookeeper.closeSessionTxn.enabled = true 2022-08-30 17:29:44,113 [myid:] - INFO [main:ZooKeeperServer@1505] - zookeeper.flushDelay=0 2022-08-30 17:29:44,113 [myid:] - INFO [main:ZooKeeperServer@1514] - zookeeper.maxWriteQueuePollTime=0 2022-08-30 17:29:44,113 [myid:] - INFO [main:ZooKeeperServer@1523] - zookeeper.maxBatchSize=1000 2022-08-30 17:29:44,114 [myid:] - INFO [main:ZooKeeperServer@260] - zookeeper.intBufferStartingSizeBytes = 1024 2022-08-30 17:29:44,115 [myid:] - INFO [main:BlueThrottle@141] - Weighed connection throttling is disabled 2022-08-30 17:29:44,116 [myid:] - INFO [main:ZooKeeperServer@1306] - minSessionTimeout set to 4000 2022-08-30 17:29:44,121 [myid:] - INFO [main:ZooKeeperServer@1315] - maxSessionTimeout set to 40000 2022-08-30 17:29:44,122 [myid:] - INFO [main:ResponseCache@45] - getData response cache size is initialized with value 400. 2022-08-30 17:29:44,122 [myid:] - INFO [main:ResponseCache@45] - getChildren response cache size is initialized with value 400. 2022-08-30 17:29:44,123 [myid:] - INFO [main:RequestPathMetricsCollector@109] - zookeeper.pathStats.slotCapacity = 60 2022-08-30 17:29:44,123 [myid:] - INFO [main:RequestPathMetricsCollector@110] - zookeeper.pathStats.slotDuration = 15 2022-08-30 17:29:44,124 [myid:] - INFO [main:RequestPathMetricsCollector@111] - zookeeper.pathStats.maxDepth = 6 2022-08-30 17:29:44,124 [myid:] - INFO [main:RequestPathMetricsCollector@112] - zookeeper.pathStats.initialDelay = 5 2022-08-30 17:29:44,125 [myid:] - INFO [main:RequestPathMetricsCollector@113] - zookeeper.pathStats.delay = 5 2022-08-30 17:29:44,125 [myid:] - INFO [main:RequestPathMetricsCollector@114] - zookeeper.pathStats.enabled = false 2022-08-30 17:29:44,128 [myid:] - INFO [main:ZooKeeperServer@1542] - The max bytes for all large requests are set to 104857600 2022-08-30 17:29:44,129 [myid:] - INFO [main:ZooKeeperServer@1556] - The large request threshold is set to -1 2022-08-30 17:29:44,129 [myid:] - INFO [main:AuthenticationHelper@66] - zookeeper.enforce.auth.enabled = false 2022-08-30 17:29:44,130 [myid:] - INFO [main:AuthenticationHelper@67] - zookeeper.enforce.auth.schemes = [] 2022-08-30 17:29:44,130 [myid:] - INFO [main:ZooKeeperServer@361] - Created server with tickTime 2000 minSessionTimeout 4000 maxSessionTimeout 40000 clientPortListenBacklog -1 datadir F:\DevResource\apache-zookeeper-3.7.1-bin\data\version-2 snapdir F:\DevResource\apache-zookeeper-3.7.1-bin\data\version-2 2022-08-30 17:29:44,162 [myid:] - INFO [main:Log@170] - Logging initialized @321ms to org.eclipse.jetty.util.log.Slf4jLog 2022-08-30 17:29:44,219 [myid:] - WARN [main:ContextHandler@1656] - o.e.j.s.ServletContextHandler@56ac3a89{/,null,STOPPED} contextPath ends with /* 2022-08-30 17:29:44,219 [myid:] - WARN [main:ContextHandler@1667] - Empty contextPath 2022-08-30 17:29:44,233 [myid:] - INFO [main:Server@375] - jetty-9.4.43.v20210629; built: 2021-06-30T11:07:22.254Z; git: 526006ecfa3af7f1a27ef3a288e2bef7ea9dd7e8; jvm 1.8.0_181-b13 2022-08-30 17:29:44,256 [myid:] - INFO [main:DefaultSessionIdManager@334] - DefaultSessionIdManager workerName=node0 2022-08-30 17:29:44,257 [myid:] - INFO [main:DefaultSessionIdManager@339] - No SessionScavenger set, using defaults 2022-08-30 17:29:44,258 [myid:] - INFO [main:HouseKeeper@132] - node0 Scavenging every 660000ms 2022-08-30 17:29:44,261 [myid:] - WARN [main:ConstraintSecurityHandler@759] - ServletContext@o.e.j.s.ServletContextHandler@56ac3a89{/,null,STARTING} has uncovered http methods for path: /* 2022-08-30 17:29:44,269 [myid:] - INFO [main:ContextHandler@915] - Started o.e.j.s.ServletContextHandler@56ac3a89{/,null,AVAILABLE} 2022-08-30 17:29:44,274 [myid:] - ERROR [main:ZooKeeperServerMain@86] - Unable to start AdminServer, exiting abnormally org.apache.zookeeper.server.admin.AdminServer$AdminServerException: Problem starting AdminServer on address 0.0.0.0, port 8080 and command URL /commands at org.apache.zookeeper.server.admin.JettyAdminServer.start(JettyAdminServer.java:188) at org.apache.zookeeper.server.ZooKeeperServerMain.runFromConfig(ZooKeeperServerMain.java:155) at org.apache.zookeeper.server.ZooKeeperServerMain.initializeAndRun(ZooKeeperServerMain.java:113) at org.apache.zookeeper.server.ZooKeeperServerMain.main(ZooKeeperServerMain.java:68) at org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:141) at org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:91) Caused by: java.io.IOException: Failed to bind to /0.0.0.0:8080 at org.eclipse.jetty.server.ServerConnector.openAcceptChannel(ServerConnector.java:349) at org.eclipse.jetty.server.ServerConnector.open(ServerConnector.java:310) at org.eclipse.jetty.server.AbstractNetworkConnector.doStart(AbstractNetworkConnector.java:80) at org.eclipse.jetty.server.ServerConnector.doStart(ServerConnector.java:234) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:73) at org.eclipse.jetty.server.Server.doStart(Server.java:401) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:73) at org.apache.zookeeper.server.admin.JettyAdminServer.start(JettyAdminServer.java:179) ... 5 more Caused by: java.net.BindException: Address already in use: bind at sun.nio.ch.Net.bind0(Native Method) at sun.nio.ch.Net.bind(Net.java:433) at sun.nio.ch.Net.bind(Net.java:425) at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223) at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74) at org.eclipse.jetty.server.ServerConnector.openAcceptChannel(ServerConnector.java:344) ... 12 more Unable to start AdminServer, exiting abnormally 2022-08-30 17:29:44,282 [myid:] - INFO [main:ZKAuditProvider@42] - ZooKeeper audit is disabled. 2022-08-30 17:29:44,283 [myid:] - ERROR [main:ServiceUtils@48] - Exiting JVM with code 4
参考:Windows下启动Zookeeper闪退 解决方案

参考
1.在Windows系统上安装zookeeper
2.dubbo-admin安装以及dubbo-admin简单使用

Linux下安装zookeeper

1.配置jdk环境

2.下载安装zookeeper

• 在zookeeper官网找到最新的稳定版本tar.gz
  

• 拷贝至到/usr/local/下，并解压tar -zxvf apache-zookeeper-3.7.1-bin.tar.gz
  

  • 修改配置，进入conf文件夹，将zoo.sample.cfg复制并保存未zoo.cfg，执行cp zoo_sample.cfg zoo.cfg，将数据目录改到应用的data目录下,vim zoo.cfg

启动

• 进入zk的bin目录下，执行./zkServer.sh start
  

（可选）运维

1. 查看状态./zkServer.sh status

• 

2. 查看进程ps -ef|grep zookeeper
   
3. 配置环境变量vim /etc/profile，增加以下配置，home以实际目录为准

#zookeeper 配置
ZOOKEEPER_HOME=/usr/local/apache-zookeeper-3.7.1-bin
PATH=$PATH:$ZOOKEEPER_HOME/bin
export PATH ZOOKEEPER_HOME PATH
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配置生效source /etc/profile

4. 配置开机自启
   编写service文件vi /usr/lib/systemd/system/zookeeper.service ，增加一下内容(以实际目录为准)：

   [Unit]
   Description=zookeeper
   After=network.target remote-fs.target nss-lookup.target
   [Service]
   Type=forking
   ExecStart=/usr/local/apache-zookeeper-3.7.1-bin/bin/zkServer.sh start
   ExecReload=/usr/local/apache-zookeeper-3.7.1-bin/bin/zkServer.sh restart
   ExecStop=/usr/local/apache-zookeeper-3.7.1-bin/bin/zkServer.sh stop
   [Install]
   WantedBy=multi-user.target
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   增加权限chmod 777 /usr/lib/systemd/system/zookeeper.service
   设置开启自启：

   # 设置自启
   systemctl enable zookeeper.service
   systemctl daemon-reload
   
   # 查看是否自启
   systemctl is-enabled zookeeper.service
   
   # 取消自启
   systemctl disable zookeeper.service
   systemctl daemon-reload
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（可选）启动异常

1. 执行start报错

查看logs目录下的日志输出vim logs/zookeeper-root-server-xxxx.out

显示端口占用，修改zoo.cfg的zk端口即可，vim conf/zoo.cfg,增加admin.serverPort=8090指定端口号

![在这里插入图片描述](https://img-blog.csdnimg.cn/e284b33e9c6b43fe8341d22673eff11f.png
再次启动，启动成功！

2. 其他异常
   • zookeeper不停的拒绝client连接
   • Dubbo发布服务报No provider available for the service错误