hadoop2.3.0cdh5.0.2 升级到cdh5.7.0

后儿就放假了,上班这心真心收不住,为了能充实的度过这难熬的两天,我决定搞个大工程。。。。。ps:我为啥这么期待放假呢,在沙发上像死人一样躺一天真的有意义嘛。。。。。。。

 

当然版本:hadoop2.3.0cdh5.0.2

机器:

  nn dn jn rm nm jh hmaster hregionserver
mast1  
mast2  
mast3      

目标版本:hadoop2.6.0cdh5.7.0

升级方式:Upgrading Unmanaged CDH Using the Command Line

升级注意事项:①从低于cdh5.4.0升级到cdh5.4.0或更高版本,需要进行hdfs元数据升级;

                    ②从低于cdh5.2.0版本升级需要做如下升级:升级hdfs元数据

                                                                              升级Sentry database

                                                                              升级hive数据库

                                                                              升级sqoop2数据库

                    ③另外还要确保如下升级:升级Oozie数据库和共享数据库

                                                      如果向hdfs上传了spark集合jar文件,要上传文件的最新版本

升级步骤:

       1.为升级做准备:

          ①使namenode进入安全模式,备份fsimage

        [hadoop@mast1 conf]$ hdfs haadmin -getServiceState mast1

        active

        [hadoop@mast1 conf]$ hdfs dfsadmin -safemode enter

        Safe mode is ON

        [hadoop@mast1 conf]$ hdfs dfsadmin -saveNamespace

         ②确认无hadoop服务在运行

          [root@mast1 ~]# ps -aef|grep java

          root       9540   8838  0 15:34 pts/0    00:00:00 grep java

         ③在namenode(ha中active的namenode)中备份元数据(注意过程中如果发现lock文件,则从头开始再执行一遍)       

[root@mast1 ~]# cd /app/hdp/dfs/name

[root@mast1 name]# tar -cvf /root/nn_backup_data.tar .

./

./edits/

./edits/current/

./edits/current/edits_inprogress_0000000000000000624

./edits/current/edits_0000000000000000413-0000000000000000533

./edits/current/edits_0000000000000000620-0000000000000000621

./edits/current/edits_0000000000000000618-0000000000000000619

./edits/current/edits_0000000000000000062-0000000000000000180

./edits/current/edits_0000000000000000622-0000000000000000623

./edits/current/edits_0000000000000000038-0000000000000000050

./edits/current/edits_0000000000000000534-0000000000000000615

./edits/current/edits_0000000000000000181-0000000000000000182

./edits/current/edits_0000000000000000284-0000000000000000412

./edits/current/edits_0000000000000000051-0000000000000000061

./edits/current/seen_txid

./edits/current/edits_0000000000000000183-0000000000000000283

./edits/current/VERSION

./edits/current/edits_0000000000000000616-0000000000000000617

./current/

./current/fsimage_0000000000000000000

./current/seen_txid

./current/VERSION

./current/fsimage_0000000000000000000.md5

./namesecondary/

    2.下载CDH 5 "1-click" repository

    https://archive.cloudera.com/cdh5/one-click-install/redhat/6/x86_64/cloudera-cdh-5-0.x86_64.rpm

    3.更新

posted on 2016-06-07 15:58  roger888  阅读(1114)  评论(0编辑  收藏  举报

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