问题描述
对于我过去几天遇到的动物园管理员端口，我是新手。
我两次引入了 zookeeper port 关键字：
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:
- 配置neo4j数据库集群时（）和
- （）（参见网络配置参数）
- while configuring neo4j db cluster (link) and
- while running compiled voltdb catalog (link) (See Network Configuration Arguments)
然后，我遇到了，（我猜这与分布式应用程序有关，我也是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:
- 在上述2个场景中是否有apache zookeeper的实现？
- 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主要用于分布式应用程序，用于配置管理和高可用性操作。 Zookeeper通过Master-Slave架构实现这一目标。 Neo4j和VoltDb可能正在使用zookeeper来实现此目的
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
来到港口了解：
假设你有3台服务器供动物园管理员......你需要提一下配置为
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
其中一个服务器将成为主服务器，其余所有服务器将成为服务器。如果任何服务器关闭，那么zookeeper会自动选择领导者。
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 .
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