【CDH实战】- 01.安装Cloudera_Hadoop集群（CentOS6.5+CDH 5.6）
概述：本次实验部署两台服务器，采用RPM安装的方式。
实验环境：
CentOS 6.5
CDH 5.6
# IP设置
# Hostname 设置
# hosts 设置
# selinux 设置
# 防火墙设置
配置 httpd 服务
# 检查 httpd 是否安装
# 安装 httpd
# 启动httpd服务
service httpd restart
设置必要的软件 yum 源
配置Java JDK（每个节点）
#安装jdk
yum install -y oracle-j2sdk1.7-1.7.0+update67-1
#配置Java环境变量
echo -e 'export JAVA_HOME=/usr/java/default' >> /etc/profile
alternatives --install /usr/bin/java java /usr/java/jdk1.7.0_67-cloudera/bin/java 200
alternatives --set java /usr/java/jdk1.7.0_67-cloudera/bin/java
alternatives --install /usr/bin/javac javac /usr/java/jdk1.7.0_67-cloudera/bin/javac 200
alternatives --set javac /usr/java/jdk1.7.0_67-cloudera/bin/javac
安装 cloudera-manager-agent（每个节点）
#安装命令
yum install cloudera-manager-agent
安装 cloudera-manager-server-db（cloudera manager 节点）
#安装命令
yum install cloudera-manager-server-db
安装后检查
#检查 cloudera 安装包
rpm -qa | grep -i cloudera
#检查 cloudera 服务
chkconfig | grep -i cloudera
8. 启动服务
#启动 cloudera-scm-server-db 服务
service cloudera-scm-server-db start
[root@elephant ~]# service cloudera-scm-server-db start
The files belonging to this database system will be owned by user "cloudera-scm".
This user must also own the server process.
The database cluster will be initialized with locale en_US.UTF8.
The default text search configuration will be set to "english".
fixing permissions on existing directory /var/lib/cloudera-scm-server-db/data ... ok
creating subdirectories ... ok
selecting default max_connections ... 100
selecting default shared_buffers ... 32MB
creating configuration files ... ok
creating template1 database in /var/lib/cloudera-scm-server-db/data/base/1 ... ok
initializing pg_authid ... ok
setting password ... ok
initializing dependencies ... ok
creating system views ... ok
loading system objects' descriptions ... ok
creating conversions ... ok
creating dictionaries ... ok
setting privileges on built-in objects ... ok
creating information schema ... ok
vacuuming database template1 ... ok
copying template1 to template0 ... ok
copying template1 to postgres ... ok
Success. You can now start the database server using:
postgres -D /var/lib/cloudera-scm-server-db/data
or
pg_ctl -D /var/lib/cloudera-scm-server-db/data -l logfile start
Adding configs
Creating SCM configuration file: /etc/cloudera-scm-server/db.properties
waiting for server to start.... done
server started
CREATE ROLE
CREATE DATABASE
Created db properties file /etc/cloudera-scm-server/db.properties
Creating DB amon for role ACTIVITYMONITOR
CREATE ROLE
CREATE DATABASE
Created DB for role ACTIVITYMONITOR
Creating DB rman for role REPORTSMANAGER
CREATE ROLE
CREATE DATABASE
Created DB for role REPORTSMANAGER
Creating DB nav for role NAVIGATOR
CREATE ROLE
CREATE DATABASE
Created DB for role NAVIGATOR
Creating DB navms for role NAVIGATORMETASERVER
CREATE ROLE
CREATE DATABASE
Created DB for role NAVIGATORMETASERVER
Enabled remote connections
waiting for server to shut down.... done
server stopped
DB initialization done.
waiting for server to start.... done
server started
#启动cloudera-manager-server服务
service cloudera-manager-server start
tail -f /var/log/cloudera-scm-server/cloudera-scm-server.log
安装集群
su - hdfs
hadoop fs -mkdir /user/test
hadoop fs -chown -R test.test /user/test
sudo -u hdfs hadoop fs -mkdir /user/
sudo -u hdfs hadoop fs -mkdir /user/test
sudo -u hdfs hadoop fs -chown -R test:test /user/test
作者：俊男无期
