Apache Kafka监控之Kafka Web Console

 

Kafka Web Console:是一款开源的系统,源码的地址在https://github.com/claudemamo/kafka-web-console中。Kafka Web Console也是用Scala语言编写的Java web程序用于监控Apache Kafka。这个系统的功能和KafkaOffsetMonitor很类似,但是我们从源码角度来看,这款系统实现比KafkaOffsetMonitor要复杂很多,而且编译配置比KafkaOffsetMonitor较麻烦。
  要想运行这套系统我们需要的先行条件为:

  1. Play Framework 2.2.x
  2. Apache Kafka 0.8.x
  3. Zookeeper 3.3.3 or 3.3.4

  同样,我们从https://github.com/claudemamo/kafka-web-console上面将源码下载下来,然后用sbt进行编译,在编译前我们需要做如下的修改:
  1、Kafka Web Console默认用的数据库是H2,它支持以下几种数据库:

 


  1. H2 (default)
  2. PostgreSql
  3. Oracle
  4. DB2
  5. MySQL
  6. ApacheDerby
  7. Microsoft SQL Server

 

为了方便,我们可以使用Mysql数据库,只要做如下修改即可,找到 conf/application.conf文件,并修改如下

  1. #############################################################################
  2.  User:过往记忆
  3.  Date:14-08-08
  4.  Time:11:37
  5.  bolg: https://www.iteblog.com
  6.  本文地址:https://www.iteblog.com/archives/1084
  7.  过往记忆博客,专注于hadoophivesparksharkflume的技术博客,大量的干货
  8.  过往记忆博客微信公共帐号:iteblog_hadoop
  9. #############################################################################
  10. 将这个
  11. db.default.driver=org.h2.Driver
  12. db.default.url="jdbc:h2:file:play"
  13. # db.default.user=sa
  14. # db.default.password=""
  15.  
  16.  
  17. 修改成
  18. db.default.driver=com.mysql.jdbc.Driver
  19. db.default.url="jdbc:mysql://localhost:3306/test"
  20. db.default.user=root
  21. db.default.pass=123456
我们还需要修改build.sbt,加入对Mysql的依赖:

  1. "mysql"%"mysql-connector-java"%"5.1.31"
 

 修改后的bulid.sbt : 


  1. name := "kafka-web-console"
  2.  
  3. version := "2.1.0-SNAPSHOT"
  4.  
  5. libraryDependencies ++= Seq(
  6.   jdbc,
  7.   cache,
  8.   "org.squeryl" % "squeryl_2.10" % "0.9.5-6",
  9.   "com.twitter" % "util-zk_2.10" % "6.11.0",
  10.   "com.twitter" % "finagle-core_2.10" % "6.15.0",
  11.   "org.quartz-scheduler" % "quartz" % "2.2.1",
  12.   "org.apache.kafka" % "kafka_2.10" % "0.8.1.1",
  13.   "mysql" % "mysql-connector-java" % "5.1.31"
  14.     exclude("javax.jms", "jms")
  15.     exclude("com.sun.jdmk", "jmxtools")
  16.     exclude("com.sun.jmx", "jmxri")
  17. )
  18.  
  19. play.Project.playScalaSettings
  20.  

 2、执行conf/evolutions/default/bak目录下面的1.sql、2.sql和3.sql三个文件。需要注意的是,这三个sql文件不能直接运行,有语法错误,需要做一些修改。

修改后的1.sql :


  1. CREATE TABLE zookeepers (
  2.   name VARCHAR(100),
  3.   host VARCHAR(100),
  4.   port INT(100),
  5.   statusId INT(100),
  6.   groupId INT(100),
  7.   PRIMARY KEY (name)
  8. );
  9.  
  10. CREATE TABLE groups (
  11.   id INT(100),
  12.   name VARCHAR(100),
  13.   PRIMARY KEY (id)
  14. );
  15.  
  16. CREATE TABLE status (
  17.   id INT(100),
  18.   name VARCHAR(100),
  19.   PRIMARY KEY (id)
  20. );
  21.  
  22. INSERT INTO groups (id, name) VALUES (0, 'ALL');
  23. INSERT INTO groups (id, name) VALUES (1, 'DEVELOPMENT');
  24. INSERT INTO groups (id, name) VALUES (2, 'PRODUCTION');
  25. INSERT INTO groups (id, name) VALUES (3, 'STAGING');
  26. INSERT INTO groups (id, name) VALUES (4, 'TEST');
  27.  
  28. INSERT INTO status (id, name) VALUES (0, 'CONNECTING');
  29. INSERT INTO status (id, name) VALUES (1, 'CONNECTED');
  30. INSERT INTO status (id, name) VALUES (2, 'DISCONNECTED');
  31. INSERT INTO status (id, name) VALUES (3, 'DELETED'); 

修改后的2.sql  : 


  1. ALTER TABLE zookeepers ADD COLUMN chroot VARCHAR(100);

修改后的3.sql :


  1. ALTER TABLE zookeepers DROP PRIMARY KEY;
  2. ALTER TABLE zookeepers ADD COLUMN id int(100) NOT NULL AUTO_INCREMENT PRIMARY KEY;
  3.  
  4. ALTER TABLE zookeepers MODIFY COLUMN name VARCHAR(100) NOT NULL;
  5. ALTER TABLE zookeepers MODIFY COLUMN host VARCHAR(100) NOT NULL;
  6. ALTER TABLE zookeepers MODIFY COLUMN port INT(100)  NOT NULL;
  7. ALTER TABLE zookeepers MODIFY COLUMN  statusId INT(100)  NOT NULL;
  8. ALTER TABLE zookeepers MODIFY COLUMN groupId INT(100)  NOT NULL;
  9. ALTER TABLE zookeepers ADD UNIQUE (name);
  10.  
  11. CREATE TABLE offsetHistory (
  12.   id int(100) AUTO_INCREMENT PRIMARY KEY,
  13.   zookeeperId int(100),
  14.   topic VARCHAR(255),
  15.   FOREIGN KEY (zookeeperId) REFERENCES zookeepers(id),
  16.   UNIQUE (zookeeperId, topic)
  17. );
  18.  
  19. CREATE TABLE offsetPoints (
  20.   id int(100) AUTO_INCREMENT PRIMARY KEY,
  21.   consumerGroup VARCHAR(255),
  22.   timestamp TIMESTAMP,
  23.   offsetHistoryId int(100),
  24.   partition int(100),
  25.   offset int(100),
  26.   logSize int(100),
  27.   FOREIGN KEY (offsetHistoryId) REFERENCES offsetHistory(id)
  28. );
  29.  
  30. CREATE TABLE settings (
  31.   key_ VARCHAR(255) PRIMARY KEY,
  32.   value VARCHAR(255)
  33. );
  34.  
  35. INSERT INTO settings (key_, value) VALUES ('PURGE_SCHEDULE', '0 0 0 ? * SUN *');
  36. INSERT INTO settings (key_, value) VALUES ('OFFSET_FETCH_INTERVAL', '30'); 

project/build.properties的

sbt.version=0.13.0 要修改实际的sbt版本,比如我用的是sbt.version=0.13.15
上面的注意事项弄完之后,我们就可以编译下载过来的源码:

# sbt package

  编译的过程比较慢,有些依赖包下载速度非常地慢,请耐心等待。

  在编译的过程中,可能会出现有些依赖包无法下载,如下错误:

  1. [warn]modulenot found: com.typesafe.play#sbt-plugin;2.2.1
  2. [warn]==== typesafe-ivy-releases: tried
  3. [warn] http://repo.typesafe.com/typesafe/ivy-releases/
  4. com.typesafe.play/sbt-plugin/scala_2.9.2/sbt_0.12/2.2.1/ivys/ivy.xml
  5. [warn]==== sbt-plugin-releases: tried
  6. [warn] http://scalasbt.artifactoryonline.com/scalasbt/sbt-plugin-releases/
  7. com.typesafe.play/sbt-plugin/scala_2.9.2/sbt_0.12/2.2.1/ivys/ivy.xml
  8. [warn]====local: tried
  9. [warn]/home/iteblog/.ivy2/local/com.typesafe.play/
  10. sbt-plugin/scala_2.9.2/sbt_0.12/2.2.1/ivys/ivy.xml
  11. [warn]====Typesafe repository: tried
  12. [warn] http://repo.typesafe.com/typesafe/releases/com/
  13. typesafe/play/sbt-plugin_2.9.2_0.12/2.2.1/sbt-plugin-2.2.1.pom
  14. [warn]====public: tried
  15. [warn] http://repo1.maven.org/maven2/com/typesafe/play/
  16. sbt-plugin_2.9.2_0.12/2.2.1/sbt-plugin-2.2.1.pom
  17. [warn]::::::::::::::::::::::::::::::::::::::::::::::
  18.  
  19. ====local: tried
  20.  
  21. /home/iteblog/.ivy2/local/org.scala-sbt/collections/0.13.0/jars/collections.jar
  22.  
  23. ::::::::::::::::::::::::::::::::::::::::::::::
  24.  
  25. :: FAILED DOWNLOADS ::
  26.  
  27. ::^ see resolution messages for details ^::
  28.  
  29. ::::::::::::::::::::::::::::::::::::::::::::::
  30.  
  31. :: org.scala-sbt#collections;0.13.0!collections.jar
  32.  
  33. :::::::::::::::::::::::::::::::::::::::::::::: 
  我们可以手动地下载相关依赖,并放到类似/home/iteblog/.ivy2/local/org.scala-sbt/collections/0.13.0/jars/目录下面。然后再编译就可以了。

启动的时候需要把.sql文件删除掉,否则会报错。

http://localhost:9000

最后,我们可以通过下面命令启动Kafka Web Console监控系统:

# sbt run

并可以在http://localhost:9000查看。下面是一张效果图

 

  1. Before you can monitor a broker, you need to register the Zookeeper server associated with it:

register zookeeper

 

Kafka Web Console

Kafka Web Console is a Java web application for monitoring Apache Kafka. With a modern web browser, you can view from the console:

  • Registered brokers

brokers


  • Topics, partitions, log sizes, and partition leaders

topics


  • Consumer groups, individual consumers, consumer owners, partition offsets and lag

topic


  • Graphs showing consumer offset and lag history as well as consumer/producer message throughput history.

topic


  • Latest published topic messages (requires web browser support for WebSocket)

topic feed


Furthermore, the console provides a JSON API described in RAML. The API can be tested using the embedded API Console accessible through the URL http://[hostname]:[port]/api/console.

Requirements

  • Play Framework 2.2.x
  • Apache Kafka 0.8.x
  • Zookeeper 3.3.3 or 3.3.4

Deployment

Consult Play!'s documentation for deployment options and instructions.

Getting Started

  1. Kafka Web Console requires a relational database. By default, the server connects to an embedded H2 database and no database installation or configuration is needed. Consult Play!'s documentation to specify a database for the console. The following databases are supported:

    • H2 (default)
    • PostgreSql
    • Oracle
    • DB2
    • MySQL
    • Apache Derby
    • Microsoft SQL Server

    Changing the database might necessitate making minor modifications to the DDL to accommodate the new database.

  2. Before you can monitor a broker, you need to register the Zookeeper server associated with it:

register zookeeper

Filling in the form and clicking on Connect will register the Zookeeper server. Once the console has successfully established a connection with the registered Zookeeper server, it can retrieve all necessary information about brokers, topics, and consumers:

zookeepers

 

 

posted @ 2017-08-30 18:23  四叶草Grass  阅读(1129)  评论(1编辑  收藏  举报