oozie的安装与使用
oozie的介绍：
oozie是一个任务调度的框架，由cloudera公司开源，所有的调度任务由一个mr程序去启动，主要使用一种有向无环图的方式来管理执行任务，定义的语言使用xml来定义，如果需要单独使用oozie，使用azkaban替换使用，这里可以将oozie和hue整合之后来使用
oozie的架构：
客户端：主要用于提交任务
服务端：主要用于接收任务，准备执行，运行在tomcat中
sqlDB：主要用于保存提交的任务
oozie的组件介绍：
workflow：工作流，里面定义了一个个的action，一个action就是一个任务
coordinate：协作器，是oozie的任务定时执行的模块，对workflow进行定时执行
bundle（绑定）：多个coordinate 构成了一个bundle
oozie的安装
第一步：修改core-site.xml
cd /export/servers/hadoop-2.6.0-cdh5.14.0/etc/hadoop
vim core-site.xml
<property>
<name>hadoop.proxyuser.root.hosts</name>
<value>*</value>
</property>
<property>
<name>hadoop.proxyuser.root.groups</name>
<value>*</value>
</property>
修改完成后需要重启Hadoop的hdfs集群和yarn集群以及历史任务服务
第二步：上传安装包并解压
cd /export/softwares/
tar -zxvf oozie-4.1.0-cdh5.14.0.tar.gz -C ../servers/
第三步：解压hadooplibs到与oozie平行的目录
cd /export/servers/oozie-4.1.0-cdh5.14.0
tar -zxvf oozie-hadooplibs-4.1.0-cdh5.14.0.tar.gz -C ../
第四步：创建libext目录
cd /export/servers/oozie-4.1.0-cdh5.14.0
mkdir -p libext
第五步：拷贝依赖包到libext
cd /export/servers/oozie-4.1.0-cdh5.14.0
cp -ra hadooplibs/hadooplib-2.6.0-cdh5.14.0.oozie-4.1.0-cdh5.14.0/* libext/
拷贝mysql的驱动包
cp /export/softwares/mysql-connector-java-5.1.45/mysql-connector-java-5.1.45-bin.jar libext/
第六步：添加ext-2.2.zip压缩包
拷贝ext-2.2.zip这个包到libext目录当中去
第七步：修改oozie-site.xml
cd /export/servers/oozie-4.1.0-cdh5.14.0/conf
vim oozie-site.xml
#如果没有这些属性，直接添加进去即可，oozie默认使用的是UTC的时区，我们需要在我们oozie-site.xml当中记得要配置我们的时区为GMT+0800时区
<property>
<name>oozie.service.JPAService.jdbc.driver</name>
<value>com.mysql.jdbc.Driver</value>
</property>
<property>
<name>oozie.service.JPAService.jdbc.url</name>
<value>jdbc:mysql://node03.hadoop.com:3306/oozie</value>
</property>
<property>
<name>oozie.service.JPAService.jdbc.username</name>
<value>root</value>
</property>
<property>
<name>oozie.service.JPAService.jdbc.password</name>
<value>123456</value>
</property>
<property>
<name>oozie.processing.timezone</name>
<value>GMT+0800</value>
</property>
<property>
<name>oozie.service.ProxyUserService.proxyuser.hue.hosts</name>
<value>*</value>
</property>
<property>
<name>oozie.service.ProxyUserService.proxyuser.hue.groups</name>
<value>*</value>
</property>
<property>
<name>oozie.service.coord.check.maximum.frequency</name>
<value>false</value>
</property>
<property>
<name>oozie.service.HadoopAccessorService.hadoop.configurations</name>
<value>*=/export/servers/hadoop-2.6.0-cdh5.14.0/etc/hadoop</value>
</property
第八步：创建mysql数据库
mysql -uroot -p
create database oozie;
第九步：上传oozie依赖的jar包到hdfs上
上传oozie的解压后目录的yarn.tar.gz到hdfs目录
bin/oozie-setup.sh sharelib create -fs hdfs://node01:8020 -locallib oozie-sharelib-4.1.0-cdh5.14.0-yarn.tar.gz
第十步：创建oozie的数据库表
bin/oozie-setup.sh db create -run -sqlfile oozie.sql
第十一步：打包项目，生成war包
cd /export/servers/oozie-4.1.0-cdh5.14.0
bin/oozie-setup.sh prepare-war
第十二步：配置oozie的环境变量
vim /etc/profile
export OOZIE_HOME=/export/servers/oozie-4.1.0-cdh5.14.0
export OOZIE_URL=http://node03.hadoop.com:11000/oozie
export PATH=:$OOZIE_HOME/bin:$PATH
source /etc/profile
第十三步：启动与关闭oozie服务
cd /export/servers/oozie-4.1.0-cdh5.14.0
bin/oozied.sh start
bin/oozied.sh stop
第十四步：浏览器访问
hue整合oozie
先停止oozie与hue的进程
修改hue的配置文件
修改hue的配置文件hue.ini
cd /export/servers/hue-3.9.0-cdh5.14.0/desktop/conf
vim hue.ini
[liboozie]
# The URL where the Oozie service runs on. This is required in order for
# users to submit jobs. Empty value disables the config check.
oozie_url=http://node03.hadoop.com:11000/oozie
# Requires FQDN in oozie_url if enabled
## security_enabled=false
# Location on HDFS where the workflows/coordinator are deployed when submitted.
remote_deployement_dir=/user/root/oozie_works
#大约在1151行
[oozie]
# Location on local FS where the examples are stored.
# local_data_dir=/export/servers/oozie-4.1.0-cdh5.14.0/examples/apps
# Location on local FS where the data for the examples is stored.
# sample_data_dir=/export/servers/oozie-4.1.0-cdh5.14.0/examples/input-data
# Location on HDFS where the oozie examples and workflows are stored.
# Parameters are $TIME and $USER, e.g. /user/$USER/hue/workspaces/workflow-$TIME
# remote_data_dir=/user/root/oozie_works/examples/apps
# Maximum of Oozie workflows or coodinators to retrieve in one API call.
oozie_jobs_count=100
# Use Cron format for defining the frequency of a Coordinator instead of the old frequency number/unit.
enable_cron_scheduling=true
# Flag to enable the saved Editor queries to be dragged and dropped into a workflow.
enable_document_action=true
# Flag to enable Oozie backend filtering instead of doing it at the page level in Javascript. Requires Oozie 4.3+.
enable_oozie_backend_filtering=true
# Flag to enable the Impala action.
enable_impala_action=true
[filebrowser]
# Location on local filesystem where the uploaded archives are temporary stored.
archive_upload_tempdir=/tmp
# Show Download Button for HDFS file browser.
show_download_button=true
# Show Upload Button for HDFS file browser.
show_upload_button=true
# Flag to enable the extraction of a uploaded archive in HDFS.
enable_extract_uploaded_archive=true
启动hue和oozie进程
cd /export/servers/hue-3.9.0-cdh5.14.0
build/env/bin/supervisor
cd /export/servers/oozie-4.1.0-cdh5.14.0
bin/oozied.sh start
页面访问hue