Hadoop集群(四) Hadoop升级

Hadoop前面安装的集群是2.6版本，现在升级到2.7版本。

注意，这个集群上有运行Hbase，所以，升级前后，需要启停Hbase。

更多安装步骤，请参考：

Hadoop集群(一) Zookeeper搭建

Hadoop集群(二) HDFS搭建

Hadoop集群(三) Hbase搭建

升级步骤如下：

集群IP列表

Namenode:192.168.143.46192.168.143.103

Journalnode:192.168.143.101192.168.143.102192.168.143.103

Datanode&Hbase regionserver:192.168.143.196192.168.143.231192.168.143.182192.168.143.235192.168.143.41192.168.143.127

Hbase master:192.168.143.103192.168.143.101

Zookeeper:192.168.143.101192.168.143.102192.168.143.103

1. 首先确定hadoop运行的路径，将新版本的软件分发到每个节点的这个路径下，并解压。

# ll /usr/local/hadoop/

total 493244

drwxrwxr-x 9 root root      4096 Mar 21  2017 hadoop-release ->hadoop-2.6.0-EDH-0u1-SNAPSHOT-HA-SECURITY

drwxr-xr-x 9 root root      4096 Oct 11 11:06 hadoop-2.7.1-rw-r--r-- 1 root root 194690531 Oct  9 10:55 hadoop-2.7.1.tar.gz

drwxrwxr-x 7 root root      4096 May 21  2016 hbase-1.1.3-rw-r--r-- 1 root root 128975247 Apr 10  2017 hbase-1.1.3.tar.gz

lrwxrwxrwx 1 root root        29 Apr 10  2017 hbase-release -> /usr/local/hadoop/hbase-1.1.3

由于是升级，配置文件完全不变，将原hadoop-2.6.0下的etc/hadoop路径完全拷贝/替换到hadoop-2.7.1下。

至此，升级前的准备就已经完成了。

 

下面开始升级操作过程。全程都是在一个中转机上执行的命令，通过shell脚本执行，省去频繁ssh登陆的操作。

## 停止hbase，hbase用户执行 

2. 停止Hbase master，hbase用户执行

状态检查，确认master，先停standby master

http://192.168.143.101:16010/master-status

master:

ssh -t -q 192.168.143.103  sudo su -l hbase -c "/usr/local/hadoop/hbase-release/bin/hbase-daemon.sh stop master"

ssh -t -q 192.168.143.103  sudo su -l hbase -c "jps"

ssh -t -q 192.168.143.101  sudo su -l hbase -c "/usr/local/hadoop/hbase-release/bin/hbase-daemon.sh stop master"

ssh -t -q 192.168.143.101  sudo su -l hbase -c "jps"

3. 停止Hbase regionserver，hbase用户执行

ssh -t -q 192.168.143.196  sudo su -l hbase -c "/usr/local/hadoop/hbase-release/bin/hbase-daemon.sh stop regionserver"

ssh -t -q 192.168.143.231  sudo su -l hbase -c "/usr/local/hadoop/hbase-release/bin/hbase-daemon.sh stop regionserver"

ssh -t -q 192.168.143.182  sudo su -l hbase -c "/usr/local/hadoop/hbase-release/bin/hbase-daemon.sh stop regionserver"

ssh -t -q 192.168.143.235  sudo su -l hbase -c "/usr/local/hadoop/hbase-release/bin/hbase-daemon.sh stop regionserver"

ssh -t -q 192.168.143.41   sudo su -l hbase -c "/usr/local/hadoop/hbase-release/bin/hbase-daemon.sh stop regionserver"

ssh -t -q 192.168.143.127  sudo su -l hbase -c "/usr/local/hadoop/hbase-release/bin/hbase-daemon.sh stop regionserver"

检查运行状态

ssh -t -q 192.168.143.196  sudo su -l hbase -c "jps" 

ssh -t -q 192.168.143.231  sudo su -l hbase -c "jps"

ssh -t -q 192.168.143.182  sudo su -l hbase -c "jps"

ssh -t -q 192.168.143.235  sudo su -l hbase -c "jps"

ssh -t -q 192.168.143.41   sudo su -l hbase -c "jps"

ssh -t -q 192.168.143.127  sudo su -l hbase -c "jps"

## 停止服务--HDFS

4. 先确认，active的namenode,网页确认.后续要先启动这个namenode

https://192.168.143.46:50470/dfshealth.html#tab-overview

5. 停止NameNode，hdfs用户执行

NN: 先停standby namenode

ssh -t -q 192.168.143.103  sudo su -l hdfs -c "/usr/local/hadoop/hadoop-release/sbin/hadoop-daemon.sh stop namenode"

ssh -t -q 192.168.143.46   sudo su -l hdfs -c "/usr/local/hadoop/hadoop-release/sbin/hadoop-daemon.sh stop namenode"

检查状态

ssh -t -q 192.168.143.103  sudo su -l hdfs -c "jps"

ssh -t -q 192.168.143.46   sudo su -l hdfs -c "jps"

6. 停止DataNode，hdfs用户执行

ssh -t -q 192.168.143.196  sudo su -l hdfs -c "/usr/local/hadoop/hadoop-release/sbin/hadoop-daemon.sh stop datanode"

ssh -t -q 192.168.143.231  sudo su -l hdfs -c "/usr/local/hadoop/hadoop-release/sbin/hadoop-daemon.sh stop datanode"

ssh -t -q 192.168.143.182  sudo su -l hdfs -c "/usr/local/hadoop/hadoop-release/sbin/hadoop-daemon.sh stop datanode"

ssh -t -q 192.168.143.235  sudo su -l hdfs -c "/usr/local/hadoop/hadoop-release/sbin/hadoop-daemon.sh stop datanode"

ssh -t -q 192.168.143.41   sudo su -l hdfs -c "/usr/local/hadoop/hadoop-release/sbin/hadoop-daemon.sh stop datanode"

ssh -t -q 192.168.143.127  sudo su -l hdfs -c "/usr/local/hadoop/hadoop-release/sbin/hadoop-daemon.sh stop datanode"

7. 停止ZKFC，hdfs用户执行

ssh -t -q 192.168.143.46   sudo su -l hdfs -c "/usr/local/hadoop/hadoop-release/sbin/hadoop-daemon.sh stop zkfc"

ssh -t -q 192.168.143.103  sudo su -l hdfs -c "/usr/local/hadoop/hadoop-release/sbin/hadoop-daemon.sh stop zkfc"

8.停止JournalNode，hdfs用户执行

JN:

ssh -t -q 192.168.143.101  sudo su -l hdfs -c "/usr/local/hadoop/hadoop-release/sbin/hadoop-daemon.sh stop journalnode"

ssh -t -q 192.168.143.102  sudo su -l hdfs -c "/usr/local/hadoop/hadoop-release/sbin/hadoop-daemon.sh stop journalnode"

ssh -t -q 192.168.143.103  sudo su -l hdfs -c "/usr/local/hadoop/hadoop-release/sbin/hadoop-daemon.sh stop journalnode"

### 备份NameNode的数据,由于生产环境，原有的数据需要备份。以备升级失败回滚。

9. 备份namenode1

ssh -t -q 192.168.143.46 "cp -r /data1/dfs/name    /data1/dfs/name.bak.20171011-2;ls -al /data1/dfs/;du -sm /data1/dfs/*" 

ssh -t -q 192.168.143.46 "cp -r /data2/dfs/name    /data2/dfs/name.bak.20171011-2;ls -al /data1/dfs/;du -sm /data1/dfs/*"

10. 备份namenode2

ssh -t -q 192.168.143.103 "cp -r /data1/dfs/name

/data1/dfs/name.bak.20171011-2;ls -al /data1/dfs/;du -sm /data1/dfs/*"

11. 备份journal

ssh -t -q 192.168.143.101 "cp -r /data1/journalnode   /data1/journalnode.bak.20171011;ls -al /data1/dfs/;du -sm /data1/*"

ssh -t -q 192.168.143.102 "cp -r /data1/journalnode   /data1/journalnode.bak.20171011;ls -al /data1/dfs/;du -sm /data1/*"

ssh -t -q 192.168.143.103 "cp -r /data1/journalnode   /data1/journalnode.bak.20171011;ls -al /data1/dfs/;du -sm /data1/*"

journal路径，可以查看hdfs-site.xml文件

dfs.journalnode.edits.dir:  /data1/journalnode

### 升级相关

12. copy文件（已提前处理，参考第一步）

切换软连接到2.7.1版本

ssh -t -q $h "cd /usr/local/hadoop; rm hadoop-release; ln -s hadoop-2.7.1 hadoop-release"

13. 切换文件软链接,root用户执行

ssh -t -q 192.168.143.46   "cd /usr/local/hadoop; rm hadoop-release; ln -s hadoop-2.7.1 hadoop-release"

ssh -t -q 192.168.143.103   "cd /usr/local/hadoop; rm hadoop-release; ln -s hadoop-2.7.1 hadoop-release"

ssh -t -q 192.168.143.101   "cd /usr/local/hadoop; rm hadoop-release; ln -s hadoop-2.7.1 hadoop-release"

ssh -t -q 192.168.143.102   "cd /usr/local/hadoop; rm hadoop-release; ln -s hadoop-2.7.1 hadoop-release"

ssh -t -q 192.168.143.196   "cd /usr/local/hadoop; rm hadoop-release; ln -s hadoop-2.7.1 hadoop-release"

ssh -t -q 192.168.143.231   "cd /usr/local/hadoop; rm hadoop-release; ln -s hadoop-2.7.1 hadoop-release"

ssh -t -q 192.168.143.182   "cd /usr/local/hadoop; rm hadoop-release; ln -s hadoop-2.7.1 hadoop-release"

ssh -t -q 192.168.143.235   "cd /usr/local/hadoop; rm hadoop-release; ln -s hadoop-2.7.1 hadoop-release"

ssh -t -q 192.168.143.41    "cd /usr/local/hadoop; rm hadoop-release; ln -s hadoop-2.7.1 hadoop-release"

ssh -t -q 192.168.143.127   "cd /usr/local/hadoop; rm hadoop-release; ln -s hadoop-2.7.1 hadoop-release"

确认状态

ssh -t -q 192.168.143.46    "cd /usr/local/hadoop; ls -al"

ssh -t -q 192.168.143.103   "cd /usr/local/hadoop; ls -al"

ssh -t -q 192.168.143.101   "cd /usr/local/hadoop; ls -al"

ssh -t -q 192.168.143.102   "cd /usr/local/hadoop; ls -al"

ssh -t -q 192.168.143.196   "cd /usr/local/hadoop; ls -al"

ssh -t -q 192.168.143.231   "cd /usr/local/hadoop; ls -al"

ssh -t -q 192.168.143.182   "cd /usr/local/hadoop; ls -al"

ssh -t -q 192.168.143.235   "cd /usr/local/hadoop; ls -al"

ssh -t -q 192.168.143.41    "cd /usr/local/hadoop; ls -al"

ssh -t -q 192.168.143.127   "cd /usr/local/hadoop; ls -al"

### 启动HDFS，hdfs用户执行

14. 启动JournalNode 

JN:

ssh -t -q 192.168.143.101  sudo su -l hdfs -c "/usr/local/hadoop/hadoop-release/sbin/hadoop-daemon.sh start journalnode"

ssh -t -q 192.168.143.102  sudo su -l hdfs -c "/usr/local/hadoop/hadoop-release/sbin/hadoop-daemon.sh start journalnode"

ssh -t -q 192.168.143.103  sudo su -l hdfs -c "/usr/local/hadoop/hadoop-release/sbin/hadoop-daemon.sh start journalnode"

ssh -t -q 192.168.143.101  sudo su -l hdfs -c "jps"

ssh -t -q 192.168.143.102  sudo su -l hdfs -c "jps"

ssh -t -q 192.168.143.103  sudo su -l hdfs -c "jps"

15. 启动第一个NameNode

ssh 192.168.143.46

su - hdfs/usr/local/hadoop/hadoop-release/sbin/hadoop-daemon.sh start namenode -upgrade

16. 确认状态,在状态完全OK之后，才可以启动另一个namenode

https://192.168.143.46:50470/dfshealth.html#tab-overview

17. 启动第一个ZKFC

su - hdfs/usr/local/hadoop/hadoop-release/sbin/hadoop-daemon.sh start zkfc192.168.143.46

18. 启动第二个NameNode

ssh 192.168.143.103

su - hdfs/usr/local/hadoop/hadoop-release/bin/hdfs namenode -bootstrapStandby/usr/local/hadoop/hadoop-release/sbin/hadoop-daemon.sh start namenode

19. 启动第二个ZKFC

ssh 192.168.143.103

su - hdfs/usr/local/hadoop/hadoop-release/sbin/hadoop-daemon.sh start zkfc

20. 启动DataNode

ssh -t -q 192.168.143.196  sudo su -l hdfs -c "/usr/local/hadoop/hadoop-release/sbin/hadoop-daemon.sh start datanode"

ssh -t -q 192.168.143.231  sudo su -l hdfs -c "/usr/local/hadoop/hadoop-release/sbin/hadoop-daemon.sh start datanode"

ssh -t -q 192.168.143.182  sudo su -l hdfs -c "/usr/local/hadoop/hadoop-release/sbin/hadoop-daemon.sh start datanode"

ssh -t -q 192.168.143.235  sudo su -l hdfs -c "/usr/local/hadoop/hadoop-release/sbin/hadoop-daemon.sh start datanode"

ssh -t -q 192.168.143.41   sudo su -l hdfs -c "/usr/local/hadoop/hadoop-release/sbin/hadoop-daemon.sh start datanode"

ssh -t -q 192.168.143.127  sudo su -l hdfs -c "/usr/local/hadoop/hadoop-release/sbin/hadoop-daemon.sh start datanode"

确认状态

ssh -t -q 192.168.143.196  sudo su -l hdfs -c "jps"

ssh -t -q 192.168.143.231  sudo su -l hdfs -c "jps"

ssh -t -q 192.168.143.182  sudo su -l hdfs -c "jps"

ssh -t -q 192.168.143.235  sudo su -l hdfs -c "jps"

ssh -t -q 192.168.143.41   sudo su -l hdfs -c "jps"

ssh -t -q 192.168.143.127  sudo su -l hdfs -c "jps"

21. 一切正常之后，启动hbase, hbase用户执行

启动hbase master，最好先启动原来的active master。

ssh -t -q 192.168.143.101  sudo su -l hbase -c "/usr/local/hadoop/hbase-release/bin/hbase-daemon.sh start master"

ssh -t -q 192.168.143.103  sudo su -l hbase -c "/usr/local/hadoop/hbase-release/bin/hbase-daemon.sh start master"

启动Hbase regionserver

ssh -t -q 192.168.143.196  sudo su -l hbase -c "/usr/local/hadoop/hbase-release/bin/hbase-daemon.sh start regionserver"

ssh -t -q 192.168.143.231  sudo su -l hbase -c "/usr/local/hadoop/hbase-release/bin/hbase-daemon.sh start regionserver"

ssh -t -q 192.168.143.182  sudo su -l hbase -c "/usr/local/hadoop/hbase-release/bin/hbase-daemon.sh start regionserver"

ssh -t -q 192.168.143.235  sudo su -l hbase -c "/usr/local/hadoop/hbase-release/bin/hbase-daemon.sh start regionserver"

ssh -t -q 192.168.143.41   sudo su -l hbase -c "/usr/local/hadoop/hbase-release/bin/hbase-daemon.sh start regionserver"

ssh -t -q 192.168.143.127  sudo su -l hbase -c "/usr/local/hadoop/hbase-release/bin/hbase-daemon.sh start regionserver"

22. Hbase region需要手动Balance开启、关闭

需要登录HBase Shell运行如下命令

开启

balance_switch true

关闭

balance_switch false

 

23. 本次不执行，系统运行一周，确保系统运行稳定，再执行Final。

注意：这期间，磁盘空间可能会快速增长。在执行完final之后，会释放一部分空间。

Finallize upgrade: hdfs dfsadmin -finalizeUpgrade