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：
升级步骤如下：
集群IP列表
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
|
Namenode:
192.168.143.46
192.168.143.103
Journalnode:
192.168.143.101
192.168.143.102
192.168.143.103
Datanode&Hbase regionserver:
192.168.143.196
192.168.143.231
192.168.143.182
192.168.143.235
192.168.143.41
192.168.143.127
Hbase master:
192.168.143.103
192.168.143.101
Zookeeper:
192.168.143.101
192.168.143.102
192.168.143.103
|
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。
|
1
2
3
4
5
6
7
8
|
# 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
|
1
|
http://192.168.143.101:16010/master-status
|
|
1
2
3
4
5
|
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
|
1
2
3
4
5
6
|
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
|
1
2
3
4
5
6
|
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
|
1
|
https://192.168.143.46:50470/dfshealth.html#tab-overview
|
5. 停止NameNode，hdfs用户执行
NN: 先停standby namenode
|
1
2
3
4
5
|
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
|
1
2
3
4
5
6
|
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
|
1
2
|
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
|
1
2
3
4
|
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
|
1
2
|
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
|
1
2
|
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
|
1
2
3
|
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
|
1
2
|
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
|
1
|
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
|
1
2
3
4
5
6
7
8
9
10
|
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
|
1
2
3
4
5
6
7
8
9
10
|
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
|
1
2
3
4
|
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"
|
|
1
2
3
|
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
|
1
2
3
|
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
|
1
|
https://192.168.143.46:50470/dfshealth.html#tab-overview
|
17. 启动第一个ZKFC
|
1
2
3
|
su - hdfs
/usr/
local
/hadoop/hadoop-release/sbin/hadoop-daemon.sh start zkfc
192.168.143.46
|
18. 启动第二个NameNode
|
1
2
3
4
|
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
|
1
2
3
|
ssh 192.168.143.103
su - hdfs
/usr/
local
/hadoop/hadoop-release/sbin/hadoop-daemon.sh start zkfc
|
20. 启动DataNode
|
1
2
3
4
5
6
|
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
|
1
2
3
4
5
6
|
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。
|
1
2
|
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
|
1
2
3
4
5
6
|
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
http://blog.51cto.com/hsbxxl/1976472