关于安装zookeeper服务报8080端口冲突问题_quorumpeermain 8080

（1）启动zookeeper服务时，报端口冲突，日志如下

2024-01-17 09:25:15,137 [myid:1] - 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:179)
        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:170)
        ... 5 more
Caused by: java.net.BindException: 地址已在使用
        at sun.nio.ch.Net.bind0(Native Method)
        at sun.nio.ch.Net.bind(Net.java:461)
        at sun.nio.ch.Net.bind(Net.java:453)
        at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:222)
        at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:85)
        at org.eclipse.jetty.server.ServerConnector.openAcceptChannel(ServerConnector.java:344)
        ... 12 more
Unable to start AdminServer, exiting abnormally
2024-01-17 09:25:15,139 [myid:1] - INFO  [main:ZKAuditProvider@42] - ZooKeeper audit is disabled.
2024-01-17 09:25:15,142 [myid:1] - ERROR [main:ServiceUtils@42] - Exiting JVM with code 4

（2）解决办法

在zoo.cfg配置文件中，新增如下内容，指定端口（即换一个端口，并确保8081端口未被占用）

admin.serverPort=8081

（3）重新启动zookeeper服务，测试结果如下

root@xxx:/data/software/apache-zookeeper-3.7.0-bin/bin# ./zkServer.sh start
ZooKeeper JMX enabled by default
Using config: /data/software/apache-zookeeper-3.7.0-bin/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
root@xxx:/data/software/apache-zookeeper-3.7.0-bin/bin# ./zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /data/software/apache-zookeeper-3.7.0-bin/bin/../conf/zoo.cfg
Client port found: 3292. Client address: localhost. Client SSL: false.
Mode: standalone