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CenOS7下Ambari版本更新

分类: 文章 • 2023-03-31 19:30:09

一 、准备

1、备份ambari server数据库

进入postgres，

pg_dump ambari>ambari.sql

pg_dump ambarirca>ambarirca.sql

 

备份文件在yun5:/var/ambariBack下

备份好ambari.properties配置文件(/etc/ambari-server/conf/ambari.properties)

  • 2、搭建本地仓库

  • 下载ambari-2.5.0.3-centos7.tar.gz

http://public-repo-1.hortonworks.com/ambari/centos7/2.x/updates/2.5.0.3/ambari-2.5.0.3-centos7.tar.gz

  • 下载HDP-2.6.0.3-centos7-rpm.tar.gz

http://public-repo-1.hortonworks.com/HDP/centos7/2.x/updates/2.6.0.3/HDP-2.6.0.3-centos7-rpm.tar.gz

  • 下载/HDP-UTILS-1.1.0.21-centos7.tar.gz

http://public-repo-1.hortonworks.com/HDP-UTILS-1.1.0.21/repos/centos7/HDP-UTILS-1.1.0.21-centos7.tar.gz

  • 下载ambari.repo

将Baseurl修改为搭建的仓库地址

 

官方升级版本说明
http://docs.hortonworks.com/HDPDocuments/Ambari-2.4.0.1/bk_ambari-installation/content/determine_stack_compatibility.html

官方升级步骤
http://docs.hortonworks.com/HDPDocuments/Ambari-2.4.0.1/bk_ambari-upgrade/content/preparing_to_upgrade_ambari.html

官方HDP问题搜索
https://community.hortonworks.com/answers/index.html

Upgrade Ambari

二、升级前准备

Preparing to Upgrade

  • 确认版本

Be sure to review the Release Notes for this Ambari release for Known Issues and Behavioral Changes.

  • 拥有root权限

You must have root, administrative, or root-equivalent authorization on the Ambari server host and all servers in the cluster.

  • 备份ambari数据库

You must backup the Ambari Server database.

  • 备份好ambari.properties配置文件

You must make a safe copy of the Ambari Server configuration file found at /etc/ambari-server/conf/ambari.properties.

三、停止服务、下载新的ambari.repo

  • 关闭Ambari Metrics

If you are running Ambari Metrics service in your cluster, stop the service. From Ambari Web, browse to Services > Ambari Metrics and select Stop from the Service Actions menu.
    

  • 停止ambari-server

Stop the Ambari Server. On the host running Ambari Server:
    ambari-server stop

  • 停止ambari-agent

Stop all Ambari Agents. On each host in your cluster running an Ambari Agent:
    ambari-agent stop

  • 获取新的ambari.repo

Fetch the new Ambari repo and replace the old repository file with the new repository file on all hosts in your cluster.

wget -nv http://public-repo-1.hortonworks.com/ambari/centos6/2.x/updates/2.4.0.1/ambari.repo -O /etc/yum.repos.d/ambari.repo

四、升级操作

  • Upgrade Ambari Server. On the host running Ambari Server:


    yum clean all
    yum info ambari-server

  • 在ambari节点更新ambari-server

In the info output, visually validate that there is an available version containing "2.4"
    yum upgrade ambari-server

显示如下成功：
Updated:
   ambari-server.x86_64 0:2.4.0.1-1      
Complete!

  • 在所有节点更新ambari-agent

Upgrade all Ambari Agents. On each host in your cluster running an Ambari Agent:
    yum upgrade ambari-agent

显示如下成功：
Updated:
  ambari-agent.x86_64 0:2.4.0.1-1                                                         

Complete!

  • 查看ambari-agent

After the upgrade process completes, check each host to make sure the new files have been installed:
rpm -qa | grep ambari-agent

  • 升级ambari-server

Upgrade Ambari Server database schema. On the host running Ambari Server:
ambari-server upgrade

[[email protected] yum.repos.d]# ambari-server upgrade

Using python  /usr/bin/python
Upgrading ambari-server
Updating properties in ambari.properties ...
WARNING: Can not find ambari.properties.rpmsave file from previous version, skipping import of settings
INFO: Can not find ambari-env.sh.rpmsave file from previous version, skipping restore of environment settings. ambari-env.sh may not include any user customization.
Fixing database objects owner
Ambari Server configured for Embedded Postgres. Confirm you have made a backup of the Ambari Server database [y/n] (y)?
Upgrading database schema
Adjusting ambari-server permissions and ownership...
Ambari Server 'upgrade' completed successfully.

  • 启动ambari-server

Start the Ambari Server. On the host running Ambari Server:
ambari-server start

[[email protected] yum.repos.d]# ambari-server start
Using python  /usr/bin/python
Starting ambari-server
Ambari Server running with administrator privileges.
Organizing resource files at /var/lib/ambari-server/resources...
Ambari database consistency check started...
No errors were found.
Ambari database consistency check finished
Server PID at: /var/run/ambari-server/ambari-server.pid
Server out at: /var/log/ambari-server/ambari-server.out
Server log at: /var/log/ambari-server/ambari-server.log
Waiting for server start....................
Ambari Server 'start' completed successfully.

  • 所有节点启动ambari-agent

Start all Ambari Agents. On each host in your cluster running an Ambari Agent:
ambari-agent start

 

  • 登录ambari管理界面，查看版本，升级成功。

打开管理界面后出现图中内容，使用’ctrl+shift+R’刷新下就好了。

CenOS7下Ambari版本更新

  • 五、增加新版本HDP

  • 浏览Ambari Web > Admin > Stack and Versions.


点击Versions标签，你将看到已经安装的HDP版本

如果看不到已经安装(Current)的版本, 说明客户端没有更新完。

Admin > Manager Ambari > 左侧Versions
点击右上角的按钮Register Version，添加新的hdp版本。
 

  • 点击Install Packages就能够将hadoop升级到该HDP版本了。

CenOS7下Ambari版本更新

  • 安装后点击upgrade，有两种升级模式，一种是保持服务运行升级，另一种是停止服务升级，后者升级更快些

CenOS7下Ambari版本更新

 

  • 点击Checks查看警告信息，需要检查TEZ服务，进入TEZ服务，选择“”run service check“”

CenOS7下Ambari版本更新

  • 提示是否升级

CenOS7下Ambari版本更新

  • 选择i have performed the clients will retry on their above. 之后proceed

CenOS7下Ambari版本更新

  • 开始升级，我选择的是停止服务升级，过程中会自动stop服务，有时候需要retry

CenOS7下Ambari版本更新

CenOS7下Ambari版本更新

  • 最后确认是否完成升级，升级后无法回退到旧版本。

CenOS7下Ambari版本更新

  • HDP2.5已经为当前版本

CenOS7下Ambari版本更新

  • 在添加新服务的时候已经是新版本组件了

CenOS7下Ambari版本更新

  • 看了下hdfs中的数据还在

CenOS7下Ambari版本更新

 

总结：

对于生产环境Hadoop集群升级，绝对是个重量级工作，一定要有敬畏之心，以上升级步骤虽然看着不复杂，也很顺利的完成，我是在测试环境上进行的，没有一点心理负担，

如果是生产环境，不仅需要停止服务，如果在过程中出现问题，后果肯定无法想象，新版本组件也需要在升级前进行测试，业务是否可以运行正常，需要大量的测试实践工作，建议如果真要升级hadoop集群，还是考虑异地备份重要数据，避免数据丢失，比起数据丢失的风险，多买几台服务器进行数据备份，不算什么的，总之不到万不得已，轻易不要升级集群。

 

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