ZooKeeper监控

在公司内部，有不少应用已经强依赖zookeeper，zookeeper的工作状态直接影响它们的正常工作。目前开源世界中暂没有一个比较成熟的zookeeper-monitor, 于是开始zookeeper监控这块工作。

目前zookeeper-monitor能做哪些事情，讲到这个，首先来看看哪些因素对zookeeper正常工作比较大的影响：

1. 用于zookeeper写日志的目录要有足够大小，并且强烈建议在单独的磁盘（挂载点）上，这是影响ZK性能最大因素之一。
2. 连接数。
3. 注册的Watcher数。
4. ZNode是否可读，可写。
5. ZK事件通知的延时是否过大。

围绕以上几点展开，完成了taokeeper一期的开发，目前主要完成以下方面的监控：（项目地址：https://github.com/alibaba/taokeeper）

l  CPU/MEM/LOAD的监控

l  ZK日志目录所在磁盘剩余空间监控

l  单机连接数的峰值报警

l  单机 Watcher数的峰值报警

l  节点自检：是指对集群中每个IP所在ZK节点上的PATH: /YINSHI.MONITOR.ALIVE.CHECK 定期进行三次如下流程 : 节点连接 – 数据发布 – 修改通知 – 获取数据 – 数据对比, 在指定的延时内，三次流程均成功视为该节点处于正常状态。

• ZooKeeper集群实时状态 (点击图片查看大图)

点击查看按钮可以查看当前服务器上所有订阅者的详细信息：

  ZooKeeper监控报警设置 (点击图片查看大图)

ZooKeeper集群状态趋势图 (点击图片查看大图)

如何安装部署

首先，对之前使用 maven-war-plugin 来进行配置管理的方式，表示遗憾。不少开发人员反馈部署比较困难，另外还有一些对maven不熟悉的开发人员也是这样认为。现在有了改进，将配置与程序分离开来。对此给大家带来的不便，深表歉意。

一、直接部署

1. 下载taokeeper.sql,初始化数据库(Mysql).
2. 下载taokeeper-monitor.war文件，解压到tomcat的webapps目前下，确保最后目录结构如下：  %TOMCAT_HOME%\webapps\taokeeper-monitor.war

3. 下载 taokeeper-monitor-config.properties文件，存放到一个指定目录，比如

/home/xiaoming/taokeeper-monitor/config/taokeeper-monitor-config.properties, 其中内容如下，根据需要自己修改下。

<span class="pun">----------------------------------------------------------------</span><span class="pln" style="color: rgb(0, 0, 0);">systemInfo</span><span class="pun">.</span><span class="pln" style="color: rgb(0, 0, 0);">envName</span><span class="pun">=</span><span class="pln" style="color: rgb(0, 0, 0);">TEST</span><span class="com">#DBCP</span><span class="pln" style="color: rgb(0, 0, 0);">dbcp</span><span class="pun">.</span><span class="pln" style="color: rgb(0, 0, 0);">driverClassName</span><span class="pun">=</span><span class="pln" style="color: rgb(0, 0, 0);">com</span><span class="pun">.</span><span class="pln" style="color: rgb(0, 0, 0);">mysql</span><span class="pun">.</span><span class="pln" style="color: rgb(0, 0, 0);">jdbc</span><span class="pun">.</span><span class="typ">Driver</span><span class="pln" style="color: rgb(0, 0, 0);">dbcp</span><span class="pun">.</span><span class="pln" style="color: rgb(0, 0, 0);">dbJDBCUrl</span><span class="pun">=</span><span class="pln" style="color: rgb(0, 0, 0);">jdbc</span><span class="pun">:</span><span class="pln" style="color: rgb(0, 0, 0);">mysql</span><span class="pun">:</span><span class="com">//1.1.1.1:3306/taokeeper</span><span class="pln" style="color: rgb(0, 0, 0);">dbcp</span><span class="pun">.</span><span class="pln" style="color: rgb(0, 0, 0);">characterEncoding</span><span class="pun">=</span><span class="pln" style="color: rgb(0, 0, 0);">GBKdbcp</span><span class="pun">.</span><span class="pln" style="color: rgb(0, 0, 0);">username</span><span class="pun">=</span><span class="pln" style="color: rgb(0, 0, 0);">xiaomingdbcp</span><span class="pun">.</span><span class="pln" style="color: rgb(0, 0, 0);">password</span><span class="pun">=</span><span class="lit">123456</span><span class="pln" style="color: rgb(0, 0, 0);">dbcp</span><span class="pun">.</span><span class="pln" style="color: rgb(0, 0, 0);">maxActive</span><span class="pun">=</span><span class="lit">30</span><span class="pln" style="color: rgb(0, 0, 0);">dbcp</span><span class="pun">.</span><span class="pln" style="color: rgb(0, 0, 0);">maxIdle</span><span class="pun">=</span><span class="lit">10</span><span class="pln" style="color: rgb(0, 0, 0);">dbcp</span><span class="pun">.</span><span class="pln" style="color: rgb(0, 0, 0);">maxWait</span><span class="pun">=</span><span class="lit">10000</span><span class="pln" style="color: rgb(0, 0, 0);"></span><span class="com">#SystemConstant</span><span class="pln" style="color: rgb(0, 0, 0);"></span><span class="typ">SystemConstent</span><span class="pun">.</span><span class="pln" style="color: rgb(0, 0, 0);">dataStoreBasePath</span><span class="pun">=</span><span class="str">/home/</span><span class="pln" style="color: rgb(0, 0, 0);">xiaoming</span><span class="pun">/</span><span class="pln" style="color: rgb(0, 0, 0);">taokeeper</span><span class="pun">-</span><span class="pln" style="color: rgb(0, 0, 0);">monitor</span><span class="pun">/</span><span class="typ">ZookeeperStore</span><span class="pln" style="color: rgb(0, 0, 0);"></span><span class="com">#SSH account of zk server</span><span class="pln" style="color: rgb(0, 0, 0);"></span><span class="typ">SystemConstant</span><span class="pun">.</span><span class="pln" style="color: rgb(0, 0, 0);">userNameOfSSH</span><span class="pun">=</span><span class="pln" style="color: rgb(0, 0, 0);">xiaoming</span><span class="typ">SystemConstant</span><span class="pun">.</span><span class="pln" style="color: rgb(0, 0, 0);">passwordOfSSH</span><span class="pun">=</span><span class="lit">123456</span><span class="pln" style="color: rgb(0, 0, 0);"></span><span class="pun">------------------------------------------------------------------</span><span class="pln" style="color: rgb(0, 0, 0);"></span><span class="lit">4.</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun">在</span><span class="pln" style="color: rgb(0, 0, 0);">tomcat</span><span class="pun">启动脚本中添加</span><span class="pln" style="color: rgb(0, 0, 0);">JAVA_OPTS</span><span class="pun">:</span><span class="pln" style="color: rgb(0, 0, 0);"></span><span class="str"><strong></span><span class="pln" style="color: rgb(0, 0, 0);">windows</span><span class="pun"><</span><span class="str">/strong>上：<strong>set</</span><span class="pln" style="color: rgb(0, 0, 0);">strong</span><span class="pun">></span><span class="pln" style="color: rgb(0, 0, 0);"> JAVA_OPTS</span><span class="pun">=-</span><span class="typ">DconfigFilePath</span><span class="pun">=</span><span class="str">"D:servertomcatwebappstaokeeper-monitor-config.properties"</span><span class="pln" style="color: rgb(0, 0, 0);"></span><span class="str"><strong></span><span class="pln" style="color: rgb(0, 0, 0);">linux</span><span class="pun"><</span><span class="str">/strong>上：JAVA_OPTS=-DconfigFilePath="/</span><span class="pln" style="color: rgb(0, 0, 0);">home</span><span class="pun">/</span><span class="pln" style="color: rgb(0, 0, 0);">xiaoming</span><span class="pun">/</span><span class="pln" style="color: rgb(0, 0, 0);">taokeeper</span><span class="pun">-</span><span class="pln" style="color: rgb(0, 0, 0);">monitor</span><span class="pun">/</span><span class="pln" style="color: rgb(0, 0, 0);">config</span><span class="pun">/</span><span class="pln" style="color: rgb(0, 0, 0);">taokeeper</span><span class="pun">-</span><span class="pln" style="color: rgb(0, 0, 0);">monitor</span><span class="pun">-</span><span class="pln" style="color: rgb(0, 0, 0);">config</span><span class="pun">.</span><span class="pln" style="color: rgb(0, 0, 0);">properties</span><span class="str">"</span>

5. 启动tomcat服务器

6. 正常启动后，访问：http://127.0.0.1:8080/taokeeper-monitor

二、从源代码开始

1. Check out 源代码：[e-mail]:nileader/taokeeper.git

2. 修改代码…

3.  实现 com.taobao.taokeeper.reporter.alarm.MessageSender 接口，用于发送报警信息。（可选）

4. 到taokeeper根目录下执行 package.cmd 命令，打成一个war包，之后进行部署

如何使用
1. taokeeper-monitor启动后，还没有配置任何zookeeper集群，点击“加入监控”进行集群添加。

2. 配置zookeeper集群信息(点击查看大图)