Centos6.5 安装 Ambari 教程（亲测可行）

在虚拟机上安装Centos6.5操做系统，建议使用64位的操做系统。

修改系统自带的yum源，使用国内的yum源的话yum的速度会快一点
一、备份系统源
# cd /etc/yum.repos.d
# mv CentOS-Base.repo CentOS-Base.repo.bak
 
二、设置默认源为163
# wget http://mirrors.163.com/.help/CentOS6-Base-163.repo
# mv CentOS6-Base-163.repo CentOS-Base.repo
 
三、执行yum源更新
# yum clean all    // 清除之前的缓存
# yum makecache    // 重建缓存
# yum update

关闭防火墙

一、重启后永久性生效：
开启：chkconfig iptables on
关闭：chkconfig iptables off
二、关闭SELinux
sudo gedit /etc/selinux/config  # 改成 SELINUX=disabled

安装ntp,保证系统时间一致

yum install ntp
service ntpd start

更新openssl 、 python

yum upgrade openssl
yum update python

安装ssh免密码登录

ssh-keygen -t rsa一路回车
cd /root/.ssh/
cp id_rsa.pub authorized_keys
chmod 600 authorized_keys
cd /root/
chmod 700 -R .ssh

卸载centos6.5自带的JDK，安装本身的JDK

rpm -qa | grep java
把出现的文件所有删掉，例如：
rpm -e --nodeps tzdata-java-2013g-1.el6.noarch
rpm -e --nodeps java-1.7.0-openjdk-1.7.0.45-2.4.3.3.el6.x86_64
rpm -e --nodeps java-1.6.0-openjdk-1.6.0.0-1.66.1.13.0.el6.x86_64
上传新的jdk 解压，配置环境变量
sudo gedit /etc/profile
增长一下内容：
JAVA_HOME=/usr/java/jdk1.7.0_79
JRE_HOME=/usr/java/jdk1.7.0_79/jre
PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin
CLASSPATH=:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib
export JAVA_HOME JRE_HOME PATH CLASSPATH
使修改的文件生效:
source /etc/profile

修改hosts文件

sudo gedit /etc/hosts

安装ambari

cd /etc/yum.repos.d/
wget http://public-repo-1.hortonworks.com/ambari/centos6/2.x/updates/2.2.0.0/ambari.repo
yum install ambari-server

在此要先关闭这台虚拟机，克隆多两台虚拟机，而后配置网络，相互ssh。例如 在amaster中：

ssh aslave1
y
exit
ssh aslave2
exit

确认无误以后回到amaster执行

ambari-server setup
[root@ambari ~]# ambari-server setup
Using python  /usr/bin/python2.6
Setup ambari-server
Checking SELinux...
SELinux status is 'disabled'
Customize user account for ambari-server daemon [y/n] (n)? y
Enter user account for ambari-server daemon (root):
Adjusting ambari-server permissions and ownership...
Checking iptables...
Checking JDK...
[1] Oracle JDK 1.7
[2] Oracle JDK 1.6
[3] - Custom JDK
==============================================================================
Enter choice (1): 3                    而后输入本身jdk安装的路径
JDK already exists, using /var/lib/ambari-server/resources/jdk-7u67-linux-x64.tar.gz
Installing JDK to /usr/jdk64/
Successfully installed JDK to /usr/jdk64/
Downloading JCE Policy archive from http://public-repo-1.hortonworks.com/ARTIFACTS/UnlimitedJCEPolicyJDK7.zip to /var/lib/ambari-server/resources/UnlimitedJCEPolicyJDK7.zip
UnlimitedJCEPolicyJDK7.zip... 100%
Successfully downloaded JCE Policy archive to /var/lib/ambari-server/resources/UnlimitedJCEPolicyJDK7.zip
Installing JCE policy...
Completing setup...
Configuring database...
Enter advanced database configuration [y/n] (n)? y            能够先安装mysql数据库，这里为了方便使用默认的
Configuring database...
==============================================================================
Choose one of the following options:
[1] - PostgreSQL (Embedded)
[2] - Oracle
[3] - MySQL
[4] - PostgreSQL
==============================================================================
Enter choice (1):
Database name (ambari):
Postgres schema (ambari):
Username (ambari):
Enter Database Password (bigdata):
Default properties detected. Using built-in database.
Configuring ambari database...
Checking PostgreSQL...
Running initdb: This may take upto a minute.
Initializing database: [  OK  ]
About to start PostgreSQL
Configuring local database...
Connecting to local database...done.
Configuring PostgreSQL...
Restarting PostgreSQL
Extracting system views...
..ambari-admin-2.0.1.45.jar
.
Adjusting ambari-server permissions and ownership...
Ambari Server 'setup' completed successfully.

最后执行：
ambari-server start

在浏览器输入：amaster:8080 登录的账密：admin admin 安装到倒数第二步的时候常常会出错，通常状况下是网络问题，你能够点击 retry 或者你能够看哪一个服务安装失败了，直接去失败的虚拟机yum.例如 而后直接去node3中执行一条命令,其余软件安装出错也能够这样作

yum install spark_2_2_*

建议一开始不要安装那么多服务，这样会很慢。你能够在成功以后一个个添加须要的软件。 出错了主要是要看错误的日志~