Hadoop完全高可用集群安装

[root@localhost ~]# hostnamectl set-hostname node1

[root@localhost ~]# cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.159.129 node1
192.168.159.130 node2
192.168.159.132 node3
192.168.159.133 node4
192.168.159.136 node5
192.168.159.137 node6
192.168.159.138 node7
192.168.159.139 node8

[root@localhost ~]# ssh-keygen
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
Created directory ‘/root/.ssh‘.
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:lIvGygyJHycNTZJ0KeuE/BM0BWGGq/UTgMUQNo7Qm2M root@node1
The key‘s randomart image is:
+---[RSA 2048]----+
|+@=**o           |
|*.XB.    .       |
|oo+*o   o        |
|.+E=.. o .       |
|o=*o+.+ S        |
|...Xoo           |
|  . =.           |
|                 |
|                 |
+----[SHA256]-----+

[root@localhost ~]# for i in `seq 1 8`;do ssh-copy-id root@node$i;done

[root@node1 ~]# ansible all -m shell -o -a ‘ntpdate ntp1.aliyun.com‘
node4 | CHANGED | rc=0 | (stdout) 20 Feb 16:08:37 ntpdate[2477]: adjust time server 120.25.115.20 offset 0.001546 sec
node6 | CHANGED | rc=0 | (stdout) 20 Feb 16:08:37 ntpdate[2470]: adjust time server 120.25.115.20 offset 0.000220 sec
node2 | CHANGED | rc=0 | (stdout) 20 Feb 16:08:37 ntpdate[2406]: adjust time server 120.25.115.20 offset -0.002414 sec
node3 | CHANGED | rc=0 | (stdout) 20 Feb 16:08:37 ntpdate[2465]: adjust time server 120.25.115.20 offset -0.001185 sec
node5 | CHANGED | rc=0 | (stdout) 20 Feb 16:08:37 ntpdate[2466]: adjust time server 120.25.115.20 offset 0.005768 sec
node7 | CHANGED | rc=0 | (stdout) 20 Feb 16:08:43 ntpdate[2503]: adjust time server 120.25.115.20 offset 0.000703 sec
node8 | CHANGED | rc=0 | (stdout) 20 Feb 16:08:43 ntpdate[2426]: adjust time server 120.25.115.20 offset -0.001338 sec

[root@node1 ~]# tar -xf jdk-8u144-linux-x64.gz -C /usr/
[root@node1 ~]# ln -sv /usr/jdk1.8.0_144/ /usr/java
"/usr/java" -> "/usr/jdk1.8.0_144/"

[root@node1 ~]# cat /etc/profile.d/java.sh
export JAVA_HOME=/usr/java
export PATH=$PATH:$JAVA_HOME/bin

[root@node1 ~]# source /etc/profile.d/java.sh
[root@node1 ~]# java -version                 
java version "1.8.0_144"
Java(TM) SE Runtime Environment (build 1.8.0_144-b01)
Java HotSpot(TM) 64-Bit Server VM (build 25.144-b01, mixed mode)　　

#解压zookeeper程序到/usr目录下
[root@node6 ~]# tar xf zookeeper-3.4.6.tar.gz -C /usr/
#创建zookeeper存放数据目录
[root@node6 ~]# mkdir /usr/data/zookeeper
#将zookeeper的conf目录下sample配置文件更改成cfg文件
[root@node6 ~]# cp /usr/zookeeper-3.4.6/conf/zoo_sample.cfg  /usr/zookeeper-3.4.6/conf/zoo.cfg
#编辑配置文件，更改数据存放目录，并添加zookeeper集群配置信息
[root@node6 ~]# vim /usr/zookeeper-3.4.6/conf/zoo.cfg
dataDir=/usr/data/zookeeper   #修改
server.1=node6:2888:3888      #添加
server.2=node7:2888:3888      #添加
server.3=node8:2888:3888      #添加

#把配置好的zookeeper程序文件分发至其余的两个节点
[root@node6 ~]# scp -r /usr/zookeeper-3.4.6/ node7:/usr/zookeeper-3.4.6/
[root@node6 ~]# scp -r /usr/zookeeper-3.4.6/ node8:/usr/zookeeper-3.4.6/

#在刚刚创建的目录下当前zookeeper节点信息，必须为数字，且三个节点不能相同
[root@node6 ~]# echo 1 > /usr/data/zookeeper/myid

#在剩下的两个节点上也要创建数据存放目录和节点配置文件
[root@node7 ~]# mkdir /usr/data/zookeeper
[root@node7 ~]# echo 2 > /usr/data/zookeeper/myid
[root@node8 ~]# mkdir /usr/data/zookeeper
[root@node8 ~]# echo 3 > /usr/data/zookeeper/myid
#配置完成后启动zookeeper集群
[root@node6 ~]# /usr/zookeeper-3.4.6/bin/zkServer.sh start
[root@node7 ~]# /usr/zookeeper-3.4.6/bin/zkServer.sh start
[root@node8 ~]# /usr/zookeeper-3.4.6/bin/zkServer.sh start

#查看集群启动情况（先启动的会成为leader，同时启动数字大的会成为leader）
[root@node6 ~]# /usr/zookeeper-3.4.6/bin/zkServer.sh status
JMX enabled by default
Using config: /usr/zookeeper-3.4.6/bin/../conf/zoo.cfg
Mode: follower

[root@node7 ~]# /usr/zookeeper-3.4.6/bin/zkServer.sh status
JMX enabled by default
Using config: /usr/zookeeper-3.4.6/bin/../conf/zoo.cfg
Mode: follower

[root@node8 ~]# /usr/zookeeper-3.4.6/bin/zkServer.sh status
JMX enabled by default
Using config: /usr/zookeeper-3.4.6/bin/../conf/zoo.cfg
Mode: leader

[root@node8 ~]# netstat -tnlp | grep java   #只有主节点有2888
tcp6       0      0 :::2181                 :::*                    LISTEN      33766/java          
tcp6       0      0 192.168.159.139:2888    :::*                    LISTEN      33766/java          
tcp6       0      0 192.168.159.139:3888    :::*                    LISTEN      33766/java          
tcp6       0      0 :::43793                :::*                    LISTEN      33766/java         

[root@node1 ~]# cat /etc/profile.d/hadoop.sh
export HADOOP_HOME=/usr/hadoop-2.9.2
export PATH=$PATH:$HADOOP_HOME/bin:$HADOOP_HOME/sbin

[root@node1 ~]# tar xf hadoop-2.9.2.tar.gz -C /usr
[root@node1 ~]# ln -sv /usr/hadoop-2.9.2/ /usr/hadoop
"/usr/hadoop" -> "/usr/hadoop-2.9.2/"

[root@node1 ~]# grep ‘export JAVA_HOME‘ /usr/hadoop/etc/hadoop/{hadoop-env.sh,mapred-env.sh,yarn-env.sh}
/usr/hadoop/etc/hadoop/hadoop-env.sh:export JAVA_HOME=/usr/java
/usr/hadoop/etc/hadoop/mapred-env.sh:export JAVA_HOME=/usr/java
/usr/hadoop/etc/hadoop/yarn-env.sh:export JAVA_HOME=/usr/java

[root@node1 ~]# vim /usr/hadoop/etc/hadoop/core-site.xml
<configuration>
    <property>  
        <name>fs.defaultFS</name>  
        <value>hdfs://hadoop</value>
        <!--HA部署下，NameNode访问hdfs-site.xml中的dfs.nameservices值 -->  
    </property>  
    <property>  
        <name>hadoop.tmp.dir</name>  
        <value>/usr/data/hadoop</value>
        <!--Hadoop的文件存放目录 -->  
    </property>  
    <property>  
        <name>ha.zookeeper.quorum</name>  
        <value>node6:2181,node7:2181,node8:2181</value>
        <!--zookeeper集群地址 -->  
    </property>
</configuration>