Centos7.2安装Ambari2.5.2+HDP2.6.2搭建Hadoop集群

ambari搭建步骤

一、环境准备

1、主机准备

192.168.1.61 knowyou-master.knowyou.com
192.168.1.62 knowyou-01.knowyou.com
192.168.1.71 knowyou-02.knowyou.com
192.168.1.72 knowyou-03.knowyou.com

准备预定的ip、域名，

2、安装虚拟机

安装虚拟机，拷贝虚拟机，重新生成MAC地址，
配置ip地址 vi /etc/sysconfig/network-scripts/ifcfg-eno16777736
重启网卡 Service network restart

3、增加静态路由

route add default gw 192.168.1.1 远程连接

4、配置linux网络的DNS

vi /etc/resolv.conf 添加一下内容
DNS=180.168.255.118
nameserver 8.8.8.8，ping www.baidu.com 测试是否能连接外网

5、修改hosts和hostname主机名，重启虚拟机

安装tmux终端复用窗口：yum install -y tmux
进入tmux会话模式
ambari在安装时需要配置全域名，所以需要检查DNS。为了减轻DNS的负担, 建议在节点里用 Name Service Caching Daemon (NSCD)
cat /etc/hosts

192.168.1.61 knowyou-master.knowyou.com

192.168.1.62 knowyou-01.knowyou.com

192.168.1.71 knowyou-02.knowyou.com

192.168.1.72 knowyou-03.knowyou.com

6、配置FQDN，如下以主节点为例

vim /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=knowyou-master.knowyou.com

其他节点同上

7、关闭防火墙和SELinux

systemctl disable firewalld
systemctl stop firewalld

临时关闭，不用重启机器：

setenforce 0

修改配置文件让机器重启也生效：

cat /etc/sysconfig/selinux
SELINUX=disabled

8、安装ssh免密登录

   >> 在主节点上输入 ssh-****** -t dsa -P '' -f ~/.ssh/id_dsa 创建一个无密码的公钥
   >> 输入 cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys 将公钥id_dsa.pub添加进keys
   >> 从节点上执行 mkdir ~/.ssh
   >> 主节点上输入 scp ~/.ssh/authorized_keys [email protected]:~/.ssh/authorized_keys 将主节点的公钥信息导入node1节点，导入时要输入一下node1机器的登陆密码
   >> 所有机器上分别执行 chmod 600 ~/.ssh/authorized_keys 赋予**文件权限

二、搭建数据库（在主机上部署）

1、卸载系统自带的jdk和MariaDB数据库

>> 查找安装的jdk：rpm -qa|grep -i jdk
>> 强制性卸载jdk：rpm -ev java-1.8.0-openjdk-1.8.0.65-3.b17.el7.x86_64 java-1.7.0-openjdk-headless-1.7.0.91-2.6.2.3.el7.x86_64 ldapjdk-4.18-14.el7.noarch java-1.7.0-openjdk-1.7.0.91-2.6.2.3.el7.x86_64 java-1.7.0-openjdk-devel-1.7.0.91-2.6.2.3.el7.x86_64 java-1.8.0-openjdk-headless-1.8.0.65-3.b17.el7.x86_64 --nodeps
>> 查找安装的jdk：rpm -qa|grep -i MariaDB
>> 强制性卸载MariaDB: rpm -ev mariadb-libs-5.5.44-2.el7.centos.x86_64 --nodeps

2、安装基本包

yum install openssh wget vim openssh-clients openssl gcc openssh-server mysql-connector-odbc -y
systemctl enable sshd && systemctl start sshd

3、安装mysql jdbc 驱动

yum install mysql-connector-java -y
四台机器安装jdk、配置环境变量，java、javac、java -version查看jdk是否安装成功

4、安装mysql，建立ambari、hive、oozie数据库和用户

安装mysql的环境：yum -y install gcc gcc-c++ gdb cmake ncurses-devel bison bison-devel
   解压mysql安装包：tar -xvf MySQL-5.6.37-1.el6.x86_64.rpm-bundle.tar
   安装mysql:sudo rpm -ivh --force MySQL-shared-5.6.37-1.el6.x86_64.rpm MySQL-shared-compat-5.6.37-1.el6.x86_64.rpm MySQL-server-5.6.37-1.el6.x86_64.rpm MySQL-test-5.6.37-1.el6.x86_64.rpm MySQL-client-5.6.37-1.el6.x86_64.rpm MySQL-devel-5.6.37-1.el6.x86_64.rpm MySQL-embedded-5.6.37-1.el6.x86_64.rpm --nodeps
   启动mysql：service mysql start
   查看初始密码：cat /root/.mysql_secret

   create database ambari character set utf8 ;
   CREATE USER 'ambari'@'%'IDENTIFIED BY 'Siger_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 latin1;
   CREATE USER 'hive'@'%'IDENTIFIED BY 'xxx';
   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 'xxx';
   GRANT ALL PRIVILEGES ON *.* TO 'oozie'@'%';
   FLUSH PRIVILEGES;

三、制作本地源

1、安装服务和yum源

   安装本地源制作相关工具
   $ yum install yum-utils createrepo -y
   数据库驱动
   yum install -y mysql-connector-java

2、安装httpd服务

   $ yum install httpd -y
   $ systemctl enable httpd && systemctl start httpd
   $ cd /var/www/html/ && mkdir ambari
   tar xf ambari-2.5.2.0-centos6.tar.gz -C /var/www/html/ambari/
   tar xf HDP-2.6.2.0-centos6-rpm.tar.gz -C /var/www/html/ambari/
   tar xf HDP-UTILS-1.1.0.21-centos6.tar.gz -C /var/www/html/ambari

验证httd网站是否可用，浏览器访问

http://192.168.1.61/ambari/

3、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/
   修改 ambari.repo和hdp.repo

vim ambari.repo

#VERSION_NUMBER=2.4.2.0-136
[ambari-2.5.2.0]

name=ambari Version - ambari-2.5.2.0

baseurl=http://172.26.177.93/ambari/ambari/centos6

gpgcheck=1

gpgkey=http://172.26.177.93/ambari/ambari/centos6/RPM-GPG-KEY/RPM-GPG-KEY-Jenkins

enabled=1

priority=1

vim hdp.repo

#VERSION_NUMBER=2.5.3.0
[HDP-2.6.2.0]

name=HDP Version - HDP-2.6.2.0

baseurl=http://172.26.177.93/ambari/HDP/centos6

gpgcheck=1

gpgkey=http:///172.26.177.93/ambari/HDP/centos6/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://172.26.177.93/ambari

gpgcheck=1

gpgkey=http://172.26.177.93/ambari/RPM-GPG-KEY/RPM-GPG-KEY-Jenkins

enabled=1

priority=1

重新编译yum源

$ yum clean all
$ yum makecache
$ yum repolist

四、安装Ambari (在主机上部署)

1、安装ambari

$ 主节点：yum install ambari-server -y
从节点：yum install ambari-agent

2、用Ambari用户（上面设置的用户）登录mysql

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

   mysql -u ambari -p
   use ambari
   source /var/lib/ambari-server/resources/Ambari-DDL-MySQL-CREATE.sql

（主节点也要安装agent服务）

3、配置Ambari

主节点：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 (ny_123456):