问题导读
1.Oozie是什么?
2.Oozie的功能模块有哪些?
3.本文有哪些案例?
1、Oozie英文翻译
驯象人
2、Oozie简介
一个基于工作流引擎的开源框架,由Cloudera公司贡献给Apache,提供对Hadoop Mapreduce、Pig Jobs的任务调度与协调。
Oozie需要部署到Java Servlet容器中运行。
3、Oozie在集群中扮演的角色
定时调度任务,多任务可以按照执行的逻辑顺序调度。
4、Oozie的功能模块
4.1、Workflow
顺序执行流程节点,支持fork(分支多个节点),join(合并多个节点为一个)
4.2、Coordinator
定时触发workflow
4.3、Bundle Job
绑定多个Coordinator
5、Oozie的节点
5.1、控制流节点(Control Flow Nodes)
控制流节点一般都是定义在工作流开始或者结束的位置,比如start,end,kill等。以及提供工作流的执行路径机制,
如decision,fork,join等。
5.2、动作节点(Action Nodes)
就是执行具体任务动作的节点。
6、Oozie的安装与部署
6.1、解压Oozie
$ tar -zxf /opt/softwares/oozie-4.0.0-cdh5.3.6.tar.gz -C /opt/modules/cdh/
6.2、Hadoop配置文件修改,完成后scp到其他机器节点
6.2.1、core-site.xml
<!-- 允许被Oozie代理的用户组 -->
<property>
<name>hadoop.proxyuser.admin.groups</name>
<value>*</value>
</property>
6.2.2、配置JobHistoryServer服务(必须)
mapred-site.xml
<!-- 配置 MapReduce JobHistory Server 地址 ,默认端口10020 -->
<property>
<name>mapreduce.jobhistory.address</name>
<value>hadoop-senior01.itguigu.com:10020</value>
</property>
<!-- 配置 MapReduce JobHistory Server web ui 地址, 默认端口19888 -->
<property>
<name>mapreduce.jobhistory.webapp.address</name>
<value>hadoop-senior01.itguigu.com:19888</value>
</property>
yarn-site.xml
<!-- 任务历史服务 -->
<property>
<name>yarn.log.server.url</name>
<value>http://hadoop-senior01.itguigu.c ... logs/</value>
</property>
完成后:记得scp同步到其他机器节点
6.3、开启Hadoop集群
$ sh ~/start-cluster.sh
尖叫提示:需要配合开启JobHistoryServer
最好执行一个MR任务进行测试。
6.4、解压hadooplibs
$ tar -zxf /opt/modules/cdh/oozie-4.0.0-cdh5.3.6/oozie-hadooplibs-4.0.0-cdh5.3.6.tar.gz -C /opt/modules/cdh/
完成后Oozie目录下会出现hadooplibs目录
6.5、在Oozie目录下创建libext目录
$ mkdir libext/
6.6、拷贝一些依赖的Jar包
6.6.1、将hadooplibs里面的jar包,拷贝到libext目录下
$ cp -ra /opt/modules/cdh/oozie-4.0.0-cdh5.3.6/hadooplibs/hadooplib-2.5.0-cdh5.3.6.oozie-4.0.0-cdh5.3.6/* libext/
6.6.2、拷贝Mysql驱动包到libext目录下
$ cp -a /opt/softwares/mysql-connector-java-5.1.27/mysql-connector-java-5.1.27-bin.jar /opt/modules/cdh/oozie-4.0.0-cdh5.3.6/libext/
6.7、将ext-2.2.zip拷贝到libext/目录下
$ cp /opt/softwares/ext-2.2.zip libext/
6.8、修改Oozie配置文件
6.8.1、oozie-site.xml
** JDBC驱动
oozie.service.JPAService.jdbc.driver
com.mysql.jdbc.Driver
** Mysql的oozie数据库的配置
oozie.service.JPAService.jdbc.url
jdbc:mysql://192.168.122.20:3306/oozie
** 数据库用户名
oozie.service.JPAService.jdbc.username
root
** 数据库密码
oozie.service.JPAService.jdbc.password
123456
** 让Oozie引用Hadoop的配置文件
oozie.service.HadoopAccessorService.hadoop.configurations
真的就是这样:--> *=/opt/modules/cdh/hadoop-2.5.0-cdh5.3.6/etc/hadoop
6.9、在Mysql中创建Oozie的数据库
6.9.1、进入数据库
$ mysql -uroot -p123456
6.9.2、创建oozie数据库
mysql> create database oozie;
6.10、初始化Oozie的配置
6.10.1、上传Oozie目录下的yarn.tar.gz文件到HDFS(尖叫提示:yarn.tar.gz文件会自行解压)
$ bin/oozie-setup.sh sharelib create -fs hdfs://hadoop-senior01.itguigu.com:8020 -locallib oozie-sharelib-4.0.0-cdh5.3.6-yarn.tar.gz
执行成功之后,去50070检查对应目录有没有文件生成。
6.10.2、创建oozie.sql文件
$ bin/oozie-setup.sh db create -run -sqlfile oozie.sql
6.10.3、打包项目,生成war包
$ bin/oozie-setup.sh prepare-war
6.11、启动Oozie服务
$ bin/oozied.sh start
(关闭Oozie服务:$ bin/oozied.sh stop)
6.12、访问Oozie的Web页面
http://hadoop-senior01.itguigu.com:11000/oozie
7、案例
7.1、案例一:使用Oozie调度Shell脚本
7.1.1、解压官方案例模板
$ tar -zxf oozie-examples.tar.gz
7.1.2、创建工作目录
$ mkdir oozie-apps/
7.1.3、拷贝任务模板到oozie-apps/目录
$ cp -r examples/apps/shell/ oozie-apps/
7.1.4、随意编写一个脚本p1.sh
$ vi /opt/modules/cdh/oozie-4.0.0-cdh5.3.6/oozie-apps/shell/p1.log
内容如下:
#!/bin/bash
/usr/sbin/ifconfig > /tmp/p1.log
7.1.5、修改job.properties和workflow.xml文件
** job.properties
#HDFS地址
nameNode=hdfs://hadoop-senior01.itguigu.com:8020
#ResourceManager地址
jobTracker=hadoop-senior02.itguigu.com:8032
#队列名称
queueName=default
examplesRoot=oozie-apps
oozie.wf.application.path=${nameNode}/user/${user.name}/${examplesRoot}/shell
EXEC=p1.sh
** workflow.xml
<workflow-app xmlns="uri:oozie:workflow:0.4" name="shell-wf">
<start to="shell-node"/>
<action name="shell-node">
<shell xmlns="uri:oozie:shell-action:0.2">
<job-tracker>${jobTracker}</job-tracker>
<name-node>${nameNode}</name-node>
<configuration>
<property>
<name>mapred.job.queue.name</name>
<value>${queueName}</value>
</property>
</configuration>
<exec>${EXEC}</exec>
<!-- <argument>my_output=Hello Oozie</argument> -->
<file>/user/admin/oozie-apps/shell/${EXEC}#${EXEC}</file>
<capture-output/>
</shell>
<ok to="end"/>
<error to="fail"/>
</action>
<decision name="check-output">
<switch>
<case to="end">
${wf:actionData('shell-node')['my_output'] eq 'Hello Oozie'}
</case>
<default to="fail-output"/>
</switch>
</decision>
<kill name="fail">
<message>Shell action failed, error message[${wf:errorMessage(wf:lastErrorNode())}]</message>
</kill>
<kill name="fail-output">
<message>Incorrect output, expected [Hello Oozie] but was [${wf:actionData('shell-node')['my_output']}]</message>
</kill>
<end name="end"/>
</workflow-app>
7.1.6、上传任务配置
$ /opt/modules/cdh/hadoop-2.5.0-cdh5.3.6/bin/hdfs dfs -put /opt/modules/cdh/oozie-4.0.0-cdh5.3.6/oozie-apps /user/admin
7.1.7、执行任务
$ bin/oozie job -oozie http://hadoop-senior01.itguigu.com:11000/oozie -config oozie-apps/shell/job.properties -run
7.1.8、杀死某个任务
$ bin/oozie job -oozie http://hadoop-senior01.itguigu.com:11000/oozie -kill 0000004-170425105153692-oozie-z-W
7.2、案例二:执行多个Job调度
7.2.1、解压官方案例模板
job.properties
nameNode=hdfs://hadoop-senior01.itguigu.com:8020
jobTracker=hadoop-senior02.itguigu.com:8032
queueName=default
examplesRoot=oozie-apps
oozie.wf.application.path=${nameNode}/user/${user.name}/${examplesRoot}/shell
EXEC1=p1.sh
EXEC2=p2.sh
workflow.xml
<workflow-app xmlns="uri:oozie:workflow:0.4" name="shell-wf">
<start to="p1-shell-node"/>
<action name="p1-shell-node">
<shell xmlns="uri:oozie:shell-action:0.2">
<job-tracker>${jobTracker}</job-tracker>
<name-node>${nameNode}</name-node>
<configuration>
<property>
<name>mapred.job.queue.name</name>
<value>${queueName}</value>
</property>
</configuration>
<exec>${EXEC1}</exec>
<file>/user/admin/oozie-apps/shell/${EXEC1}#${EXEC1}</file>
<!-- <argument>my_output=Hello Oozie</argument>-->
<capture-output/>
</shell>
<ok to="p2-shell-node"/>
<error to="fail"/>
</action>
<action name="p2-shell-node">
<shell xmlns="uri:oozie:shell-action:0.2">
<job-tracker>${jobTracker}</job-tracker>
<name-node>${nameNode}</name-node>
<configuration>
<property>
<name>mapred.job.queue.name</name>
<value>${queueName}</value>
</property>
</configuration>
<exec>${EXEC2}</exec>
<file>/user/admin/oozie-apps/shell/${EXEC2}#${EXEC2}</file>
<!-- <argument>my_output=Hello Oozie</argument>-->
<capture-output/>
</shell>
<ok to="end"/>
<error to="fail"/>
</action>
<decision name="check-output">
<switch>
<case to="end">
${wf:actionData('shell-node')['my_output'] eq 'Hello Oozie'}
</case>
<default to="fail-output"/>
</switch>
</decision>
<kill name="fail">
<message>Shell action failed, error message[${wf:errorMessage(wf:lastErrorNode())}]</message>
</kill>
<kill name="fail-output">
<message>Incorrect output, expected [Hello Oozie] but was [${wf:actionData('shell-node')['my_output']}]</message>
</kill>
<end name="end"/>
</workflow-app>
测试时需要留意的点:
1、每个脚本是在哪台机器上执行的。
2、脚本的执行时间。
3、发现一个问题:执行任务的时间和本地时间不一致。
7.3、案例三:调度MapReduce任务
7.3.1、先编写一个可以运行的MR任务的.jar包
7.3.2、拷贝官方模板到oozie-apps
$ cp -r /opt/modules/cdh/oozie-4.0.0-cdh5.3.6/examples/apps/map-reduce/ /opt/modules/cdh/oozie-4.0.0-cdh5.3.6/oozie-apps/
7.3.3、测试一下wordcount在yarn中的运行
$ /opt/modules/cdh/hadoop-2.5.0-cdh5.3.6/bin/yarn jar hadoop-mapreduce-examples-2.5.0-cdh5.3.6.jar wordcount /input/ /output111/
7.3.4、配置map-reduce任务
job.properties
nameNode=hdfs://hadoop-senior01.itguigu.com:8020
jobTracker=hadoop-senior02.itguigu.com:8021
queueName=default
examplesRoot=oozie-apps
#hdfs://hadoop-senior01.itguigu.com:8020/user/admin/oozie-apps/map-reduce/workflow.xml
oozie.wf.application.path=${nameNode}/user/${user.name}/${examplesRoot}/map-reduce/workflow.xml
outputDir=map-reduce
workflow.xml
<workflow-app xmlns="uri:oozie:workflow:0.2" name="map-reduce-wf">
<start to="mr-node"/>
<action name="mr-node">
<map-reduce>
<job-tracker>${jobTracker}</job-tracker>
<name-node>${nameNode}</name-node>
<prepare>
<delete path="${nameNode}/output/"/>
</prepare>
<configuration>
<property>
<name>mapred.job.queue.name</name>
<value>${queueName}</value>
</property>
<!-- 配置调度MR任务时,使用新的API -->
<property>
<name>mapred.mapper.new-api</name>
<value>true</value>
</property>
<property>
<name>mapred.reducer.new-api</name>
<value>true</value>
</property>
<!-- 指定Job Key输出类型 -->
<property>
<name>mapreduce.job.output.key.class</name>
<value>org.apache.hadoop.io.Text</value>
</property>
<!-- 指定Job Value输出类型 -->
<property>
<name>mapreduce.job.output.value.class</name>
<value>org.apache.hadoop.io.IntWritable</value>
</property>
<!-- 指定输入路径 -->
<property>
<name>mapred.input.dir</name>
<value>/input/</value>
</property>
<!-- 指定输出路径 -->
<property>
<name>mapred.output.dir</name>
<value>/output/</value>
</property>
<!-- 指定Map类 -->
<property>
<name>mapreduce.job.map.class</name>
<value>org.apache.hadoop.examples.WordCount$TokenizerMapper</value>
</property>
<!-- 指定Reduce类 -->
<property>
<name>mapreduce.job.reduce.class</name>
<value>org.apache.hadoop.examples.WordCount$IntSumReducer</value>
</property>
<property>
<name>mapred.map.tasks</name>
<value>1</value>
</property>
</configuration>
</map-reduce>
<ok to="end"/>
<error to="fail"/>
</action>
<kill name="fail">
<message>Map/Reduce failed, error message[${wf:errorMessage(wf:lastErrorNode())}]</message>
</kill>
<end name="end"/>
</workflow-app>
7.3.5、拷贝待执行的jar包到map-reduce的lib目录下
$ cp -a /opt/modules/cdh/oozie-4.0.0-cdh5.3.6/hadoop-mapreduce-examples-2.5.0-cdh5.3.6.jar ./
7.3.6、上传配置好的app文件夹到HDFS
$ /opt/modules/cdh/hadoop-2.5.0-cdh5.3.6/bin/hdfs dfs -put map-reduce/ /user/admin/oozie-apps
7.3.7、执行任务
$ bin/oozie job -oozie http://hadoop-senior01.itguigu.com:11000/oozie -config oozie-apps/map-reduce/job.properties -run
7.4、案例四:Coordinator周期性调度任务
7.4.1、配置Linux时区
详见Hive第一天Word文档
7.4.2、修改oozie-default.xml文件,涉及属性:
** 修改oozie的时区
oozie.processing.timezone
GMT+0800
7.4.3、修改js框架中的关于时间设置的代码
$ vi /opt/modules/cdh/oozie-4.0.0-cdh5.3.6/oozie-server/webapps/oozie/oozie-console.js
修改如下:
function getTimeZone() {
Ext.state.Manager.setProvider(new Ext.state.CookieProvider());
return Ext.state.Manager.get("TimezoneId","GMT+0800");
}
7.4.4、重启oozie服务,并重启浏览器(一定要注意清除缓存)
$ bin/oozied.sh stop
$ bin/oozied.sh start
7.4.5、拷贝官方模板配置定时任务
$ cp -r /opt/modules/cdh/oozie-4.0.0-cdh5.3.6/examples/apps/cron/ /opt/modules/cdh/oozie-4.0.0-cdh5.3.6/oozie-apps/
7.4.6、修改模板
job.properties
nameNode=hdfs://hadoop-senior01.itguigu.com:8020
jobTracker=hadoop-senior02.itguigu.com:8032
queueName=default
examplesRoot=oozie-apps
oozie.coord.application.path=${nameNode}/user/${user.name}/${examplesRoot}/apps/cron
#start:必须设置为未来时间,否则任务失败
start=2017-07-29T17:00+0800
end=2017-07-30T17:00+0800
workflowAppUri=${nameNode}/user/${user.name}/${examplesRoot}/cron
EXEC1=p1.sh
EXEC2=p2.sh
coordinator.xml
<coordinator-app name="cron-coord" frequency="${coord:minutes(10)}" start="${start}" end="${end}" timezone="GMT+0800" xmlns="uri:oozie:coordinator:0.2">
<action>
<workflow>
<app-path>${workflowAppUri}</app-path>
<configuration>
<property>
<name>jobTracker</name>
<value>${jobTracker}</value>
</property>
<property>
<name>nameNode</name>
<value>${nameNode}</value>
</property>
<property>
<name>queueName</name>
<value>${queueName}</value>
</property>
</configuration>
</workflow>
</action>
</coordinator-app>
workflow.xml
<workflow-app xmlns="uri:oozie:workflow:0.5" name="one-op-wf">
<start to="p1-shell-node"/>
<action name="p1-shell-node">
<shell xmlns="uri:oozie:shell-action:0.2">
<job-tracker>${jobTracker}</job-tracker>
<name-node>${nameNode}</name-node>
<configuration>
<property>
<name>mapred.job.queue.name</name>
<value>${queueName}</value>
</property>
</configuration>
<exec>${EXEC1}</exec>
<file>/user/admin/oozie-apps/shell/${EXEC1}#${EXEC1}</file>
<!-- <argument>my_output=Hello Oozie</argument>-->
<capture-output/>
</shell>
<ok to="p2-shell-node"/>
<error to="fail"/>
</action>
<action name="p2-shell-node">
<shell xmlns="uri:oozie:shell-action:0.2">
<job-tracker>${jobTracker}</job-tracker>
<name-node>${nameNode}</name-node>
<configuration>
<property>
<name>mapred.job.queue.name</name>
<value>${queueName}</value>
</property>
</configuration>
<exec>${EXEC2}</exec>
<file>/user/admin/oozie-apps/shell/${EXEC2}#${EXEC2}</file>
<!-- <argument>my_output=Hello Oozie</argument>-->
<capture-output/>
</shell>
<ok to="end"/>
<error to="fail"/>
</action>
<decision name="check-output">
<switch>
<case to="end">
${wf:actionData('shell-node')['my_output'] eq 'Hello Oozie'}
</case>
<default to="fail-output"/>
</switch>
</decision>
<kill name="fail">
<message>Shell action failed, error message[${wf:errorMessage(wf:lastErrorNode())}]</message>
</kill>
<kill name="fail-output">
<message>Incorrect output, expected [Hello Oozie] but was [${wf:actionData('shell-node')['my_output']}]</message>
</kill>
<end name="end"/>
</workflow-app>
7.4.7、上传配置,启动任务
$ /opt/modules/cdh/hadoop-2.5.0-cdh5.3.6/bin/hdfs dfs -put oozie-apps/cron/ /user/admin/oozie-apps
$ bin/oozie job -oozie http://hadoop-senior01.itguigu.com:11000/oozie -config oozie-apps/cron/job.properties -run
(尖叫提示:oozie允许的最小执行任务的频率是5分钟)
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