什么是zookeeper端口及其用途? [英] what is zookeeper port and its usage?

问题描述

我对zookeeper端口很陌生，我过去几天通过它遇到了.
我用 zookeeper port 关键字介绍了两次:

I am quite new for zookeeper port through which I am coming across from past few days.
I introduced with zookeeper port keyword at two occasion:

• 在配置 neo4j 数据库集群时(link)和
• 在运行编译后的 voltdb 目录时(link)(请参阅网络配置参数)

• while configuring neo4j db cluster (link) and
• while running compiled voltdb catalog (link) (See Network Configuration Arguments)

然后，我遇到了Apache Zookeeper，(我猜这与分布式应用程序有关，我是一个分布式应用程序中的新手).因此我想到了一个问题:

Then, I came across Apache Zookeeper, (which I guess is related to distributed application, I am a newbie in distributed application as well). hence question came in my mind:

1. 在上述 2 个场景中是否有任何 apache zookeeper 的实现?
2. 这个 zookeeper 端口究竟在内部做什么?

任何帮助将不胜感激，谢谢.

Any help would be appreciated, Thanks.

推荐答案

Zookeeper 用于分布式应用程序，主要用于配置管理和高可用性操作.Zookeeper 通过主从架构来做到这一点.Neo4j 和 VoltDb 可能为此使用了 zookeeper

Zookeeper is used in distributed applications mainly for configuration management and high availability operations. Zookeeper does this by a Master-Slave architecture. Neo4j and VoltDb might be using zookeeper for this purpose

进入端口理解:假设你有 3 台动物园管理员服务器......你需要在配置中提及

Coming to the ports understanding : suppose u have 3 servers for zookeepers ... You need to mention in configuration as

clientPort=2181
server.1=zookeeper1:2888:3888
server.2=zookeeper2:2888:3888
server.3=zookeeper3:2888:3888

其中一台服务器是主服务器，其余服务器都是从服务器.如果任何服务器关闭，那么zookeeper会自动选举领导.

Out of these one server will be the master and rest all will be slaves.If any server goes OFF then zookeeper elects leader automatically .

服务器监听三个端口:2181 用于客户端连接；2888 为追随者连接，如果他们是领导者；和 3888 为其他领导选举阶段的服务器连接.

Servers listen on three ports: 2181 for client connections; 2888 for follower connections, if they are the leader; and 3888 for other server connections during the leader election phase .

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