[Zookeeper学习-第一章]zk环境搭建[单机+控制台]

系统环境为 Centos ，由于项目需要，准备搭建 zookeeper-3.5.5 + 用于方便展示节点的zookeeperAdmin用作公司开发之用

zookeeper-3.5.5

下载

前往开源项目下载页面根据需要下载对应的版本（注意要下载文件名后面带”-bin”的包）

懒人链接

[[email protected] zookeeper]# tar -zxvf ./apache-zookeeper-3.5.5-bin.tar.gz
[[email protected] zookeeper]# cd ./apache-zookeeper-3.5.5-bin.tar.gz
[[email protected] zookeeper]# ll
total 44
drwxr-xr-x 2 2002 2002  4096 Apr  9 19:13 bin
drwxr-xr-x 2 2002 2002  4096 Sep 20 14:00 conf
drwxr-xr-x 5 2002 2002  4096 May  3 20:07 docs
drwxr-xr-x 2 root root  4096 Sep 20 13:40 lib
-rw-r--r-- 1 2002 2002 11358 Feb 15  2019 LICENSE.txt
drwxr-xr-x 2 root root  4096 Sep 20 13:43 logs
-rw-r--r-- 1 2002 2002   432 Apr  9 19:13 NOTICE.txt
-rw-r--r-- 1 2002 2002  1560 May  3 19:41 README.md
-rw-r--r-- 1 2002 2002  1347 Apr  2 21:05 README_packaging.txt
[[email protected] zookeeper]# ll
[[email protected] apache-zookeeper-3.5.5-bin]# cd conf
[[email protected] conf]# ll
total 16
-rw-r--r-- 1 2002 2002  535 Feb 15  2019 configuration.xsl
-rw-r--r-- 1 2002 2002 2712 Apr  2 21:05 log4j.properties
-rw-r--r-- 1 2002 2002  922 Feb 15  2019 zoo_sample.cfg
[[email protected] conf]# cp ./zoo_sample.cfg ./zoo.cfg
[[email protected] conf]# cd ../bin/
[[email protected] conf]# 

需要留意的

如果在这里直接启动的话可能会启动不成功，因为apache-zookeeper默认监听了8080端口作为自己的zookeeper-server的服务端。最好是自己在./conf/zoo.cfg中配置一下admin.serverPort=[自己随便改个端口]，对的，配置文件里默认是没有这行的，这个比较坑。

启动

[[email protected] bin]# ./zkServer.sh start
/usr/bin/java
ZooKeeper JMX enabled by default
Using config: /app/zookeeper/apache-zookeeper-3.5.5-bin/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
[[email protected] bin]# ./zkServer.sh start
/usr/bin/java
ZooKeeper JMX enabled by default
Using config: /app/zookeeper/apache-zookeeper-3.5.5-bin/bin/../conf/zoo.cfg
Starting zookeeper ... already running as process 29414.
[[email protected] bin]# ./zkServer.sh status
/usr/bin/java
ZooKeeper JMX enabled by default
Using config: /app/zookeeper/apache-zookeeper-3.5.5-bin/bin/../conf/zoo.cfg
Client port found: 2181. Client address: localhost.
Mode: standalone

zookeeper-admin

这是一个github上的小项目

功能不多，刚刚够用就行，不整那些花里胡哨的，支持直接使用docker构建，非常方便

[[email protected] zookeeper]# docker run --name zookeeper-admin -p 80:2182 docker.io/ahoowang/zookeeper.admin
[[email protected] zookeeper]# docker container ls
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                  NAMES
56bf5522f4fe        4232addbc345        "dotnet ZooKeeper...."   About an hour ago   Up 2 minutes        0.0.0.0:2182->80/tcp   zookeeper-admin

界面看上去还不错。

然而好景不长，跑了一阵发现无法访问了。

[[email protected] zookeeper]# docker container ls
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES

??? 怎么停止了，看看日志怎么说

[[email protected] zookeeper]# docker logs 56bf5522f4fe
Hosting environment: Production
Content root path: /app
Now listening on: http://+:80
Application started. Press Ctrl+C to shut down.
Application is shutting down...
Hosting environment: Production
Content root path: /app
Now listening on: http://+:80
Application started. Press Ctrl+C to shut down.
Unhandled Exception: System.InvalidOperationException: Collection was modified; enumeration operation may not execute.
   at System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource)
   at System.Collections.Generic.Dictionary`2.ValueCollection.Enumerator.MoveNext()
   at ZooKeeper.Admin.ZooKeeperManager.<dispose>d__9.MoveNext() in E:\ZooKeeper-Admin\ZooKeeper.Admin\ZooKeeperManager.cs:line 55
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
   at System.Threading.ThreadPoolWorkQueue.Dispatch()