动物园管理员合奏没有出现

我正在尝试配置 3 个节点的集合文档。它们都在 Linux Ubuntu 上。 在所有三个节点上，配置文件如下所示：

$ZOOKEEPER_HOME/conf 下的zoo.cfg

tickTime=2000
dataDir=/home/zkuser/zookeeper_data
clientPort=2181
initLimit=5
syncLimit=2
server.1=ip.of.zk1:2888:3888
server.2=ip.of.zk2:2888:3888
server.3=ip.of.zk3:2888:3888

我还分别放置了“myid”下的文件/home/zkuser/zookeeper_data/目录。 该 myid 文件包含位于节点 (ip.of.zk1) 上的 1，依此类推。

当我使用 bin/zkServer.sh start 启动 zk 服务器时，控制台上没有显示任何异常。 但是，当我打开 bin 目录下的 Zookeeper.out 文件时，我看到以下错误。

2014-11-04 00:23:49,120 [myid:3] - WARN  [WorkerSender[myid=3]:QuorumCnxManager@382] - Cannot open channel to 1 at election address /ip.of.zk1:3888
java.net.NoRouteToHostException: No route to host
    at java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:327)
    at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:193)
    at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:180)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:385)
    at java.net.Socket.connect(Socket.java:546)
    at org.apache.zookeeper.server.quorum.QuorumCnxManager.connectOne(QuorumCnxManager.java:368)
    at org.apache.zookeeper.server.quorum.QuorumCnxManager.toSend(QuorumCnxManager.java:341)
    at org.apache.zookeeper.server.quorum.FastLeaderElection$Messenger$WorkerSender.process(FastLeaderElection.java:449)
    at org.apache.zookeeper.server.quorum.FastLeaderElection$Messenger$WorkerSender.run(FastLeaderElection.java:430)
    at java.lang.Thread.run(Thread.java:701)
2014-11-04 00:23:49,123 [myid:3] - WARN  [WorkerSender[myid=3]:QuorumCnxManager@382] - Cannot open channel to 2 at election address /ip.of.zk2:3888
java.net.ConnectException: Connection refused
    at java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:327)
    at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:193)
    at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:180)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:385)
    at java.net.Socket.connect(Socket.java:546)
    at org.apache.zookeeper.server.quorum.QuorumCnxManager.connectOne(QuorumCnxManager.java:368)
    at org.apache.zookeeper.server.quorum.QuorumCnxManager.toSend(QuorumCnxManager.java:341)
    at org.apache.zookeeper.server.quorum.FastLeaderElection$Messenger$WorkerSender.process(FastLeaderElection.java:449)
    at org.apache.zookeeper.server.quorum.FastLeaderElection$Messenger$WorkerSender.run(FastLeaderElection.java:430)
    at java.lang.Thread.run(Thread.java:701)

Note：我已经在每台机器上使用 iptables 打开了适当的端口。 例如 ： 链输入（策略接受）

target     prot opt source               destination         
ACCEPT     all  --  IP.of.ZK1       anywhere            
ACCEPT     all  --  IP.of.ZK2       anywhere            
ACCEPT     all  --  IP.of.ZK3       anywhere            

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination         

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination    

谁能告诉我我错过了什么？

问候， 乙脑

我有类似的问题。我得到了一些关于问题可能出在哪里的提示here and here。就我而言，命令的输出netstat -plutn正在展示一些东西，包括127.0.0.1:3888对于选举端口 3888。我通过更改服务器 n 上的部分zoo.cfg 解决了这个问题，例如

server.1=name.of.s1:2888.3888
...
server.n=localhost:2888:3888
...

to

server.1=name.of.s1:2888.3888
...
server.n=0.0.0.0:2888:3888
...

ZooKeeper 重新启动后，输出netstat -plutn包括:::3888.

显然，ZooKeeper 需要这样做才能正确公开选举端口，在本例中为 3888。