Centos6.5 安裝 Ambari 教程（親測可行）

在虛擬機上安裝Centos6.5操做系統，建議使用64位的操做系統。

修改系統自帶的yum源，使用國內的yum源的話yum的速度會快一點
一、備份系統源
# cd /etc/yum.repos.d
# mv CentOS-Base.repo CentOS-Base.repo.bak
 
二、設置默認源爲163
# wget http://mirrors.163.com/.help/CentOS6-Base-163.repo
# mv CentOS6-Base-163.repo CentOS-Base.repo
 
三、執行yum源更新
# yum clean all    // 清除之前的緩存
# yum makecache    // 重建緩存
# yum update

關閉防火牆

一、重啓後永久性生效：
開啓：chkconfig iptables on
關閉：chkconfig iptables off
二、關閉SELinux
sudo gedit /etc/selinux/config  # 改成 SELINUX=disabled

安裝ntp,保證系統時間一致

yum install ntp
service ntpd start

更新openssl 、 python

yum upgrade openssl
yum update python

安裝ssh免密碼登錄

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

卸載centos6.5自帶的JDK，安裝本身的JDK

rpm -qa | grep java
把出現的文件所有刪掉，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
上傳新的jdk 解壓，配置環境變量
sudo gedit /etc/profile
增長一下內容：
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

安裝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

在此要先關閉這臺虛擬機，克隆多兩臺虛擬機，而後配置網絡，相互ssh。例如 在amaster中：

ssh aslave1
y
exit
ssh aslave2
exit

確認無誤以後回到amaster執行

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                    而後輸入本身jdk安裝的路徑
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            能夠先安裝mysql數據庫，這裏爲了方便使用默認的
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.

最後執行：
ambari-server start

在瀏覽器輸入：amaster:8080 登錄的賬密：admin admin 安裝到倒數第二步的時候常常會出錯，通常狀況下是網絡問題，你能夠點擊 retry 或者你能夠看哪一個服務安裝失敗了，直接去失敗的虛擬機yum.例如 而後直接去node3中執行一條命令,其餘軟件安裝出錯也能夠這樣作

yum install spark_2_2_*

建議一開始不要安裝那麼多服務，這樣會很慢。你能夠在成功以後一個個添加須要的軟件。 出錯了主要是要看錯誤的日誌~