三、搭建数据库（在主机ambari-mysql上部署）
Ambari安装会将安装等信息写入数据库，建议使用自己安装的Mysql数据库，也可以不安装而使用默认数据库PostgreSQL
版本要求：
– PostgreSQL 8
– PostgreSQL 9.1.13+,9.3, 9.4***
– MariaDB 10*
– MySQL 5.6
– Oracle 11gr2
– Oracle 12c**
按你系统来选择源：http://downloads.mariadb.org/mariadb/repositories/
Here is your custom MariaDB YUM repository entry for CentOS. Copy and paste it into a file under /etc/yum.repos.d/ (we suggest naming the file MariaDB.repo or something similar).
# MariaDB 10.1 CentOS repository list – created 2016-12-09 06:03 UTC
# http://downloads.mariadb.org/mariadb/repositories/
[mariadb]
name = MariaDB
baseurl = http://yum.mariadb.org/10.1/centos7-amd64
gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB
gpgcheck=1
After the file is in place, install MariaDB with:
$ sudo yum install MariaDB-server MariaDB-client
If you haven’t already accepted the MariaDB GPG key, you will be prompted to do so. See “Installing MariaDB with yum” for detailed information.
安装完成后创建ambari数据库及用户，登录root用户执行下面语句：
create database ambari character set utf8 ;
CREATE USER ‘ambari’@’%’IDENTIFIED BY ‘Ambari-123’;
GRANT ALL PRIVILEGES ON *.* TO ‘ambari’@’%’;
FLUSH PRIVILEGES;
如果要安装Hive，再创建Hive数据库和用户 再执行下面的语句：
create database hive character set utf8 ;
CREATE USER ‘hive’@’%’IDENTIFIED BY ‘Hive-123’;
GRANT ALL PRIVILEGES ON *.* TO ‘hive’@’%’;
FLUSH PRIVILEGES;
如果要安装Oozie，再创建Oozie数据库和用户 再执行下面的语句：
create database oozie character set utf8 ;
CREATE USER ‘oozie’@’%’IDENTIFIED BY ‘Oozie-123’;
GRANT ALL PRIVILEGES ON *.* TO ‘oozie’@’%’;
FLUSH PRIVILEGES;
四、制作本地源 (在SY-001.hadoop部署)
下载 Ambari HDP HDP-UTILS 源包（文件很大，需要很长下载时间，请耐心等待。。。）
$ cd /usr/local/src/Ambari/
$ wget http://public-repo-1.hortonworks.com/ambari/centos7/2.x/updates/2.4.2.0/ambari-2.4.2.0-centos7.tar.gz
$ wget http://public-repo-1.hortonworks.com/HDP/centos7/2.x/updates/2.5.3.0/HDP-2.5.3.0-centos7-rpm.tar.gz
$ wget http://public-repo-1.hortonworks.com/HDP-UTILS-1.1.0.21/repos/centos7/HDP-UTILS-1.1.0.21-centos7.tar.gz
安装本地源制作相关工具
$ yum install yum-utils createrepo -y
安装httpd服务
$ yum install httpd -y
$ systemctl enable httpd && systemctl start httpd
$ cd /var/www/html/ && mkdir ambari
$ cd /usr/local/src/Ambari/
$ tar xf ambari-2.4.2.0-centos7.tar.gz -C /var/www/html/ambari/
$ tar xf HDP-2.5.3.0-centos7-rpm.tar.gz -C /var/www/html/ambari/
$ tar xf HDP-UTILS-1.1.0.21-centos7.tar.gz -C /var/www/html/ambari/
验证httd网站是否可用，可以使用links 命令或者浏览器直接访问下面的地址：
$ links http://172.19.80.2/ambari/
结果是看到刚才解压的目录
配置ambari、HDP、HDP-UTILS的本地源
首先下载上面资源列表中的相应repo文件，修改其中的URL为本地的地址，相关配置如下：
$ cd /etc/yum.repos.d/
$ cat ambari.repo
#VERSION_NUMBER=2.4.2.0-136
[Updates-ambari-2.4.2.0]
name=ambari-2.4.2.0 – Updates
baseurl=http://172.19.80.2/ambari/AMBARI-2.4.2.0/centos7/2.4.2.0-136
gpgcheck=1
gpgkey=http://172.19.80.2/ambari/AMBARI-2.4.2.0/centos7/2.4.2.0-136/RPM-GPG-KEY/RPM-GPG-KEY-Jenkins
enabled=1
priority=1
$ cat hdp.repo
#VERSION_NUMBER=2.5.3.0
[HDP-2.5.3.0]
name=HDP Version – HDP-2.5.3.0
baseurl=http://172.19.80.2/ambari/HDP/centos7/2.x/updates/2.5.3.0
gpgcheck=1
gpgkey=http://172.19.80.2/ambari/HDP/centos7/2.x/updates/2.5.3.0/RPM-GPG-KEY/RPM-GPG-KEY-Jenkins
enabled=1
priority=1
[HDP-UTILS-1.1.0.21]
name=HDP Utils Version – HDP-UTILS-1.1.0.21
baseurl=http://172.19.80.2/ambari/HDP-UTILS-1.1.0.21/repos/centos7
gpgcheck=1
gpgkey=http://172.19.80.2/ambari/HDP/centos7/2.x/updates/2.5.0.0/RPM-GPG-KEY/RPM-GPG-KEY-Jenkins
enabled=1
priority=1
$ yum clean all
$ yum makecache
$ yum repolist
五、安装Ambari (在SY-001.hadoop部署)
安装Ambari
$ yum install ambari-server -y
配置Ambari
$ ambari-server setup
下面是配置执行流程，按照提示操作
（1） 提示是否自定义设置。输入：y
Customize user account for ambari-server daemon [y/n] (n)? y
（2）ambari-server 账号。输入：ambari
Enter user account for ambari-server daemon (root):ambari
Adjusting ambari-server permissions and ownership…
（3）设置JDK。输入：3
Checking JDK…
Do you want to change Oracle JDK [y/n] (n)? y
[] Oracle JDK 1.8 + Java Cryptography Extension (JCE) Policy Files 8
[] Oracle JDK 1.7 + Java Cryptography Extension (JCE) Policy Files 7
[] Custom JDK
==============================================================================
Enter choice (1): 3
（4）如果上面选择3自定义JDK,则需要设置JAVA_HOME。输入：/opt/java/jdk1.8.0_112
WARNING: JDK must be installed on all hosts and JAVA_HOME must be valid on all hosts.
WARNING: JCE Policy files are required for configuring Kerberos security. If you plan to use Kerberos,please make sure JCE Unlimited Strength Jurisdiction Policy Files are valid on all hosts.
Path to JAVA_HOME: /opt/java/jdk1.8.0_112
Validating JDK on Ambari Server…done.
Completing setup…
（5）数据库配置。选择：y
Configuring database…
Enter advanced database configuration [y/n] (n)? y
（6）选择数据库类型。输入：3
Configuring database…
==============================================================================
Choose one of the following options:
[1] – PostgreSQL (Embedded)
[2] – Oracle
[3] – MySQL
[4] – PostgreSQL
[5] – Microsoft SQL Server (Tech Preview)
[6] – SQL Anywhere
==============================================================================
Enter choice (3): 3
（7）设置数据库的具体配置信息，根据实际情况输入，如果和括号内相同，则可以直接回车。
Hostname (localhost):
Port ():
Database name (ambari):
Username (ambari):
Enter Database Password (Ambari-123):
（8）将Ambari数据库脚本导入到数据库
如果使用自己定义的数据库，必须在启动Ambari服务之前导入Ambari的sql脚本
用Ambari用户（上面设置的用户）登录mysql
mysql -u ambari -p
use ambari
source /var/lib/ambari-server/resources/Ambari-DDL-MySQL-CREATE.sql
（9）启动Amabri
$ ambari-server start
（10）成功启动后在浏览器输入Ambari地址：
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