IP 主机名
172.25.38.1 server1 Namenode
172.25.38.2 server2 Journalnode
172.25.38.3 server3 Journalnode
172.25.38.4 server4 Journalnode
172.25.38.5 server5 Namenode
[root@server1 ~]# /etc/init.d/nfs start 开启服务
[root@server1 ~]# showmount -e
Export list for server1:
/home/hadoop *
[root@server1 ~]# su - hadoop
[hadoop@server1 ~]$
[hadoop@server1 ~]$ ls
hadoop hadoop-2.7.3.tar.gz jdk1.7.0_79
hadoop-2.7.3 java jdk-7u79-linux-x64.tar.gz
[hadoop@server1 ~]$ rm -fr /tmp/*
[hadoop@server1 ~]$ ls
hadoop java zookeeper-3.4.9.tar.gz
hadoop-2.7.3 jdk1.7.0_79
hadoop-2.7.3.tar.gz jdk-7u79-linux-x64.tar.gz
[hadoop@server1 ~]$ tar zxf zookeeper-3.4.9.tar.gz 解压zookeeper包
[root@server5 ~]# yum install nfs-utils -y 安装服务
[root@server5 ~]# /etc/init.d/rpcbind start 开启服务 [ OK ]
[root@server5 ~]# /etc/init.d/nfs start 开启nfs服务
[root@server5 ~]# useradd -u 800 hadoop
[root@server5 ~]# mount 172.25.38.1:/home/hadoop/ /home/hadoop/ 挂载
[root@server5 ~]# df 查看挂载
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup-lv_root 19134332 929548 17232804 6% /
tmpfs 380140 0 380140 0% /dev/shm
/dev/vda1 495844 33478 436766 8% /boot
172.25.38.1:/home/hadoop/ 19134336 3289728 14872704 19% /home/hadoop
[root@server5 ~]# su - hadoop
[hadoop@server5 ~]$ ls
hadoop hadoop-2.7.3.tar.gz jdk1.7.0_79 主机均已经同步
hadoop-2.7.3 java jdk-7u79-linux-x64.tar.gz
[hadoop@server5 ~]$ rm -fr /tmp/*
[root@server2 ~]# mount 172.25.38.1:/home/hadoop/ /home/hadoop/ 挂载
[root@server2 ~]# df 查看挂载
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup-lv_root 19134332 1860136 16302216 11% /
tmpfs 251120 0 251120 0% /dev/shm
/dev/vda1 495844 33478 436766 8% /boot
172.25.38.1:/home/hadoop/ 19134336 3289728 14872704 19% /home/hadoop
[root@server2 ~]# rm -fr /tmp/*
[root@server2 ~]# su - hadoop
[hadoop@server2 ~]$ ls
hadoop java zookeeper-3.4.9
hadoop-2.7.3 jdk1.7.0_79 zookeeper-3.4.9.tar.gz
hadoop-2.7.3.tar.gz jdk-7u79-linux-x64.tar.gz
[hadoop@server2 ~]$ cd zookeeper-3.4.9
[hadoop@server2 zookeeper-3.4.9]$ ls
bin dist-maven LICENSE.txt src
build.xml docs NOTICE.txt zookeeper-3.4.9.jar
CHANGES.txt ivysettings.xml README_packaging.txt zookeeper-3.4.9.jar.asc
conf ivy.xml README.txt zookeeper-3.4.9.jar.md5
contrib lib recipes zookeeper-3.4.9.jar.sha1
[hadoop@server2 zookeeper-3.4.9]$ cd conf/
[hadoop@server2 conf]$ ls
configuration.xsl log4j.properties zoo_sample.cfg
[hadoop@server2 conf]$ cp zoo_sample.cfg zoo.cfg
[hadoop@server2 conf]$ vim zoo.cfg
[hadoop@server2 conf]$ cat zoo.cfg | tail -n 3
server.1=172.25.38.2:2888:3888
server.2=172.25.38.3:2888:3888
server.3=172.25.38.4:2888:3888
[hadoop@server2 conf]$ mkdir /tmp/zookeeper
[hadoop@server2 conf]$ cd /tmp/zookeeper/
[hadoop@server2 zookeeper]$ ls
[hadoop@server2 zookeeper]$ echo 1 > myid
[hadoop@server2 zookeeper]$ ls
myid
[hadoop@server2 zookeeper]$ cd
[hadoop@server2 ~]$ cd zookeeper-3.4.9/conf/
[hadoop@server2 conf]$ ls
configuration.xsl log4j.properties zoo.cfg zoo_sample.cfg
[hadoop@server2 conf]$ cd ..
[hadoop@server2 zookeeper-3.4.9]$ cd bin/
[hadoop@server2 zookeeper-3.4.9]$ cd bin/
[hadoop@server2 bin]$ ls
README.txt zkCli.cmd zkEnv.cmd zkServer.cmd
zkCleanup.sh zkCli.sh zkEnv.sh zkServer.sh
[hadoop@server2 bin]$ ./zkServer.sh start 开启服务
server3
[root@server3 ~]# mount 172.25.38.1:/home/hadoop/ /home/hadoop/
[root@server3 ~]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup-lv_root 19134332 1537052 16625300 9% /
tmpfs 251124 0 251124 0% /dev/shm
/dev/vda1 495844 33478 436766 8% /boot
172.25.38.1:/home/hadoop/ 19134336 3289728 14872704 19% /home/hadoop
[root@server3 ~]# rm -fr /tmp/*
[root@server3 ~]# su - hadoop
[hadoop@server3 ~]$ ls
hadoop java zookeeper-3.4.9
hadoop-2.7.3 jdk1.7.0_79 zookeeper-3.4.9.tar.gz
hadoop-2.7.3.tar.gz jdk-7u79-linux-x64.tar.gz
[hadoop@server3 ~]$ mkdir /tmp/zookeeper
[hadoop@server3 ~]$ cd /tmp/zookeeper/
[hadoop@server3 zookeeper]$ ls
[hadoop@server3 zookeeper]$ echo 2 > myid
[hadoop@server3 zookeeper]$ cd
[hadoop@server3 ~]$ cd zookeeper-3.4.9/bin/
[hadoop@server3 bin]$ ls
README.txt zkCli.cmd zkEnv.cmd zkServer.cmd zookeeper.out
zkCleanup.sh zkCli.sh zkEnv.sh zkServer.sh
[hadoop@server3 bin]$ ./zkServer.sh start
server4
[root@server4 ~]# mount 172.25.38.1:/home/hadoop/ /home/hadoop/
[root@server4 ~]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup-lv_root 19134332 1350656 16811696 8% /
tmpfs 251124 0 251124 0% /dev/shm
/dev/vda1 495844 33478 436766 8% /boot
172.25.38.1:/home/hadoop/ 19134336 3289728 14872704 19% /home/hadoop
[root@server4 ~]# rm -fr /tmp/*
[root@server4 ~]# su - hadoop
[hadoop@server4 ~]$ mkdir /tmp/zookeeper
[hadoop@server4 ~]$ cd /tmp/zookeeper/
[hadoop@server4 zookeeper]$ ls
[hadoop@server4 zookeeper]$ echo 3 >myid
[hadoop@server4 zookeeper]$ ls
myid
[hadoop@server4 zookeeper]$ cd
[hadoop@server4 ~]$ cd zookeeper-3.4.9/bin/
[hadoop@server4 bin]$ ./zkServer.sh start
ZooKeeper JMX enabled by default
server2
[hadoop@server2 bin]$ ls
README.txt zkCli.cmd zkEnv.cmd zkServer.cmd zookeeper.out
zkCleanup.sh zkCli.sh zkEnv.sh zkServer.sh
[hadoop@server2 bin]$ pwd
/home/hadoop/zookeeper-3.4.9/bin
[hadoop@server2 bin]$ ./zkCli.sh 连接zookeeper
[zk: localhost:2181(CONNECTED) 0] ls /
[zookeeper]
[zk: localhost:2181(CONNECTED) 1] ls /zookeeper
[quota]
[zk: localhost:2181(CONNECTED) 2] ls /zookeeper/quota
[]
[zk: localhost:2181(CONNECTED) 3] get /zookeeper/quota
cZxid = 0x0
ctime = Thu Jan 01 08:00:00 CST 1970
mZxid = 0x0
mtime = Thu Jan 01 08:00:00 CST 1970
pZxid = 0x0
cversion = 0
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 0
numChildren = 0
core-site.xml
[hadoop@server1 ~]$ ls
hadoop java zookeeper-3.4.9
hadoop-2.7.3 jdk1.7.0_79 zookeeper-3.4.9.tar.gz
hadoop-2.7.3.tar.gz jdk-7u79-linux-x64.tar.gz
[hadoop@server1 ~]$ cd hadoop/etc/hadoop/
[hadoop@server1 hadoop]$ vim core-site.xml
<configuration>
指定 hdfs 的 namenode 为 masters (名称可自定义)
<property>
<name>fs.defaultFS</name>
<value>hdfs://masters</value>
</property>
<property>
指定 zookeeper 集群主机地址
<name>ha.zookeeper.quorum</name>
<value>172.25.38.2:2181,172.25.38.3:2181,172.25.38.4:2181</value>
</property>
</configuration>
hdfs-site.xml
[hadoop@server1 hadoop]$ vim hdfs-site.xml
[hadoop@server1 hadoop]$ cat hdfs-site.xml | tail -n 74
<configuration>
<property>
<name>dfs.replication</name>
<value>3</value>
</property>
<property>
指定 hdfs 的 nameservices 为 masters,和 core-site.xml 文件中的设置保持一致
<name>dfs.nameservices</name>
<value>masters</value>
</property>
masters 下面有两个 namenode 节点,分别是 h1 和 h2
<property>
<name>dfs.ha.namenodes.masters</name>
<value>h1,h2</value>
</property>
指定 h1 节点的 rpc 通信地址
<property>
<name>dfs.namenode.rpc-address.masters.h1</name>
<value>172.25.38.1:9000</value>
</property>
指定 h1 节点的 http 通信地址
<property>
<name>dfs.namenode.http-address.masters.h1</name>
<value>172.25.38.1:50070</value>
</property>
指定 h2 节点的 rpc 通信地址
<property>
<name>dfs.namenode.rpc-address.masters.h2</name>
<value>172.25.38.5:9000</value>
</property>
指定 h2 节点的 http 通信地址
<property>
<name>dfs.namenode.http-address.masters.h2</name>
<value>172.25.38.5:50070</value>
</property>
指定 NameNode 元数据在 JournalNode 上的存放位置
<property>
<name>dfs.namenode.shared.edits.dir</name>
<value>qjournal://172.25.38.2:8485;172.25.38.3:8485;172.25.38.4:8485/masters</value>
</property>
指定 JournalNode 在本地磁盘存放数据的位置
<property>
<name>dfs.journalnode.edits.dir</name>
<value>/tmp/journaldata</value>
</property>
开启 NameNode 失败自动切换
<property>
<name>dfs.ha.automatic-failover.enabled</name>
<value>true</value>
</property>
配置失败自动切换实现方式
<property>
<name>dfs.client.failover.proxy.provider.masters</name>
<value>org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider</value>
</property>
配置隔离机制方法,每个机制占用一行
<property>
<name>dfs.ha.fencing.methods</name>
<value>
sshfence
shell(/bin/true)
</value>
</property>
使用 sshfence 隔离机制时需要 ssh 免密码
<property>
<name>dfs.ha.fencing.ssh.private-key-files</name>
<value>/home/hadoop/.ssh/id_rsa</value>
</property>
配置 sshfence 隔离机制超时时间
<property>
<name>dfs.ha.fencing.ssh.connect-timeout</name>
<value>30000</value>
</property>
</configuration>
[hadoop@server1 hadoop]$ pwd
/home/hadoop/hadoop/etc/hadoop
[hadoop@server1 hadoop]$ vim slaves
[hadoop@server1 hadoop]$ cat slaves
172.25.38.2
172.25.38.3
172.25.38.4
[hadoop@server2 hadoop]$ pwd
/home/hadoop/hadoop
[hadoop@server2 hadoop]$ ls
bigfile etc input libexec logs output sbin
bin include lib LICENSE.txt NOTICE.txt README.txt share
[hadoop@server2 hadoop]$ sbin/hadoop-daemon.sh start journalnode
starting journalnode, logging to /home/hadoop/hadoop-2.7.3/logs/hadoop-hadoop-journalnode-server2.out
[hadoop@server2 hadoop]$ jps
1459 JournalNode
1508 Jps
1274 QuorumPeerMain
[hadoop@server1 hadoop]$ pwd
/home/hadoop/hadoop
[hadoop@server1 hadoop]$ ls
bigfile etc input libexec logs output sbin
bin include lib LICENSE.txt NOTICE.txt README.txt share
[hadoop@server1 hadoop]$ bin/hdfs namenode -format
[hadoop@server1 hadoop]$ ssh server5
[hadoop@server5 ~]$ exit
logout
Connection to server5 closed.
[hadoop@server1 hadoop]$ ssh 172.25.38.5
Last login: Tue Aug 28 10:40:53 2018 from server1
[hadoop@server5 ~]$ exit
logout
Connection to 172.25.38.5 closed.
[hadoop@server1 hadoop]$ scp -r /tmp/hadoop-hadoop/ 172.25.38.5:/tmp/
fsimage_0000000000000000000 100% 353 0.3KB/s 00:00
VERSION 100% 202 0.2KB/s 00:00
seen_txid 100% 2 0.0KB/s 00:00
fsimage_0000000000000000000.md5 100% 62 0.1KB/s 00:00
格式化 zookeeper (只需在 h1 上执行即可)
[hadoop@server1 hadoop]$ ls
bigfile etc input libexec logs output sbin
bin include lib LICENSE.txt NOTICE.txt README.txt share
[hadoop@server1 hadoop]$ bin/hdfs zkfc -formatZK
启动 hdfs 集群(只需在 h1 上执行即可)
[hadoop@server1 hadoop]$ sbin/start-dfs.sh 免密没有做好的话需要卡住的时候输入yes
server2
[hadoop@server2 ~]$ ls
hadoop hadoop-2.7.3.tar.gz jdk1.7.0_79 zookeeper-3.4.9
hadoop-2.7.3 java jdk-7u79-linux-x64.tar.gz zookeeper-3.4.9.tar.gz
[hadoop@server2 ~]$ cd zookeeper-3.4.9
[hadoop@server2 zookeeper-3.4.9]$ ls
bin dist-maven LICENSE.txt src
build.xml docs NOTICE.txt zookeeper-3.4.9.jar
CHANGES.txt ivysettings.xml README_packaging.txt zookeeper-3.4.9.jar.asc
conf ivy.xml README.txt zookeeper-3.4.9.jar.md5
contrib lib recipes zookeeper-3.4.9.jar.sha1
[hadoop@server2 zookeeper-3.4.9]$ bin/zkCli.sh
[zk: localhost:2181(CONNECTED) 0] ls /
[zookeeper, hadoop-ha]
[zk: localhost:2181(CONNECTED) 1] ls /hadoop-ha
[masters]
[zk: localhost:2181(CONNECTED) 2] ls
[zk: localhost:2181(CONNECTED) 3] ls /hadoop-ha/masters
[ActiveBreadCrumb, ActiveStandbyElectorLock]
[zk: localhost:2181(CONNECTED) 4] ls /hadoop-ha/masters/Active
ActiveBreadCrumb ActiveStandbyElectorLock
[zk: localhost:2181(CONNECTED) 4] ls /hadoop-ha/masters/ActiveBreadCrumb
[]
[zk: localhost:2181(CONNECTED) 5] get /hadoop-ha/masters/ActiveBreadCrumb
mastersh2server5 �F(�> 当前master为server5
cZxid = 0x10000000a
ctime = Tue Aug 28 10:46:47 CST 2018
mZxid = 0x10000000a
mtime = Tue Aug 28 10:46:47 CST 2018
pZxid = 0x10000000a
cversion = 0
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 28
numChildren = 0
[hadoop@server5 ~]$ ls
hadoop hadoop-2.7.3.tar.gz jdk1.7.0_79 zookeeper-3.4.9
hadoop-2.7.3 java jdk-7u79-linux-x64.tar.gz zookeeper-3.4.9.tar.gz
[hadoop@server5 ~]$ cd hadoop
[hadoop@server5 hadoop]$ ls
bigfile etc input libexec logs output sbin
bin include lib LICENSE.txt NOTICE.txt README.txt share
[hadoop@server5 hadoop]$ bin/hdfs dfs -mkdir /user
[hadoop@server5 hadoop]$ bin/hdfs dfs -mkdir /user/hadoop
[hadoop@server5 hadoop]$ bin/hdfs dfs -ls
[hadoop@server5 hadoop]$ bin/hdfs dfs -put etc/hadoop/ input
[hadoop@server5 hadoop]$ bin/hdfs dfs -ls
Found 1 items
drwxr-xr-x - hadoop supergroup 0 2018-08-28 10:59 input
[hadoop@server5 hadoop]$ jps
1479 DFSZKFailoverController
1382 NameNode
1945 Jps
[hadoop@server5 hadoop]$ kill -9 1382 直接结束进程
server2
[zk: localhost:2181(CONNECTED) 6] get /hadoop-ha/masters/ActiveBreadCrumb
mastersh1server1 �F(�> master已经变成了server1
cZxid = 0x10000000a
ctime = Tue Aug 28 10:46:47 CST 2018
mZxid = 0x10000000f
mtime = Tue Aug 28 11:00:22 CST 2018
pZxid = 0x10000000a
cversion = 0
dataVersion = 1
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 28
numChildren = 0
server5
[hadoop@server5 hadoop]$ pwd
/home/hadoop/hadoop
[hadoop@server5 hadoop]$ jps
1479 DFSZKFailoverController
1991 Jps
[hadoop@server5 hadoop]$ sbin/hadoop-daemon.sh start namenode 恢复节点
starting namenode, logging to /home/hadoop/hadoop-2.7.3/logs/hadoop-hadoop-namenode-server5.out
[hadoop@server5 hadoop]$ jps 查看进程已经恢复
1479 DFSZKFailoverController
2020 NameNode
2100 Jps
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