ClouderaManager大数据平台搭建
在企业里快速搭建大数据平台除了Ambria外还可以用Cloudera Manager，这两种工具相对于纯手工搭建确实便捷很多，但是有利也有弊，相对于新手来说就不便于掌握内部原理，不好排错等,而纯手工搭建，出错较多，不容易成功。一. 规划：
192.168.3.201 server/agent MySQL
192.168.3.202 agent namenode
192.168.3.203 agent namenode（备） resourcemanager
192.168.3.204 agent resourcemanager （备）
192.168.3.205 agent
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二. 环境准备
- 系统：Centos 6.5 64位
配置IP，hostname,
各个服务器IP配置：# vim /etc/sysconfig/network-script/ifcfg-eth0
service network restart
各个服务器名配置：# vim /etc/sysconfig/networkvim /etc/hosts
192.168.3.201 rac201.com 192.168.3.202 rac202.com 192.168.3.203 rac203.com 192.168.3.204 rac204.com 192.168.3.205 rac205.com 3.检查DNS配置，确保能上网 # vim /etc/resolve.conf # ping www.baidu.com 4.关闭防火墙和禁用selinux getenforce 查看selinux的状态并修改为disable状态 # vim /etc/sysconfig/selinux SELINUX=disable 重启生效 5. 禁用和关闭防火墙 临时禁用 # iptables -F # setenforce 0 或设置开机不启动 # service iptables stop # chkconfig iptables off 6. 所有服务器卸载自带的JDK，安装新版本，比如1.7或1.8版本的 # rpm -qa | grep java # rpm -e --nodeps tzdata-java-2012j-1.el6.noarch java-1.6.0-openjdk-1.6.0.0-1.50.1.11.5.el6_3.x86_64 java-1.7.0-openjdk-1.7.0.9-2.3.4.1.el6_3.x86_64 # mkdir -p /opt/modules # tar zxf jdk-8u141-linux-x64.gz -C /opt/modules 7. 对所有服务器配置JAVA环境变量 # vi /etc/profile export JAVA_HOME=/opt/modules/jdk1.8.0_141 export PATH=$PATH:$JAVA_HOME/bin # source /etc/profile 8. 拷贝配置到其他服务器 # scp -r /opt/modules/jdk1.8.0_141 root@rac202.com:/opt/modules/ # scp -r /opt/modules/jdk1.8.0_141 root@rac203.com:/opt/modules/ # scp -r /opt/modules/jdk1.8.0_141 root@rac204.com:/opt/modules/ # scp -r /opt/modules/jdk1.8.0_141 root@rac205.com:/opt/modules/ 检查： java -version 9. 配置服务器之间免密钥登录 9.1 # ssh-keygen # ssh-copy-id -i ~/.ssh/id_rsa.pub rac201.com # ssh-copy-id -i ~/.ssh/id_rsa.pub rac202.com # ssh-copy-id -i ~/.ssh/id_rsa.pub rac203.com # ssh-copy-id -i ~/.ssh/id_rsa.pub rac204.com # ssh-copy-id -i ~/.ssh/id_rsa.pub rac205.com 9.2 # ssh rac01.com # exit #不要忘记连接后要退出 # ssh rac02.com # exit # ssh rac03.com # exit # ssh rac04.com # exit # ssh rac05.com # exit 10. 服务器时间同步 10.1 启动ntpd进程服务 # service ntpd start # chkconfig ntpd on # chkconfig --list | grep ntpd 10.2 修改时间服务器的配置 # vim /etc/ntp.conf 打开注释，修改成本服务器的网段 # restrict 192.168.3.0 mask 255.255.255.0 nomodify notrap 注释掉以下几行，可能是三行也可能是五行 #server 0.centos.pool.ntp.org #server 1.centos.pool.ntp.org #server 2.centos.pool.ntp.org 手工添加以下两行 server 127.127.1.0 # local clock fudge 127.127.1.0 s 启动并且配置开机时启动 # service ntpd start && chkconfig ntpd on && chkconfig --list | grep ntpd 11. 对所有服务器设置能打开的文件最大数量、进程最大数，能使用的内存等 # vi /etc/security/limits.conf * soft nofile 32728 * hard nofile 1024567 * soft nproc 65535 * hard nproc unlimited * soft memlock unlimited * hard memlock unlimited 复制limits.conf到其他服务器中 # scp /etc/security/limits.conf root@rac202.com:/etc/security/limits.conf # scp /etc/security/limits.conf root@rac203.com:/etc/security/limits.conf # scp /etc/security/limits.conf root@rac204.com:/etc/security/limits.conf # scp /etc/security/limits.conf root@rac205.com:/etc/security/limits.conf 重启生效： ulimit -a
三. Mysql数据库安装
在rac201服务器检查并卸载系统自动安装的Mysql版本,
rpm -qa | grep mysql
# rpm -e --nodeps mysql-libs-5.1.71-1.el6.x86_64采用yum源方式安装Mysql5.6, 先下载yum源文件,
wget http://repo.mysql.com/mysql57-community-release-el6-8.noarch.rpm
# rpm -Uvh mysql57-community-release-el6-8.noarch.rpm 修改yum源文件： vim /etc/yum.repos.d/mysql-community.repo [mysql56-community] enabled=1 gpgcheck=1 [mysql57-community] enabled=0 gpgcheck=1 vim /etc/yum.repos.d/mysql-community-source.repo [mysql56-community-source] enabled=1 gpgcheck=1 [mysql-tools-preview-source] name=MySQL Tools Preview - Source baseurl=http://repo.mysql.com/yum/mysql-tools-preview/el/6/SRPMS enabled=1 gpgcheck=1 用yum repolist mysql这个命令查看一下是否已经有mysql可安装文件 #yum repolist all | grep mysql yum安装mysql, 一直yes下去 # yum -y install mysql-community-server 安装成功后，启动并初始化 # service mysqld start # service mysqld status mysql刚安装完，mysql的root用户的密码默认是空的，需要给root用户设置密码密码，执行下列命令进行安全设置 # mysql_secure_installation 输入当前用户：回车 输入root密码：123456 production environment. Remove anonymous users? [Y/n] y ... Success! Normally, root should only be allowed to connect from 'localhost'. This ensures that someone cannot guess at the root password from the network. Disallow root login remotely? [Y/n] n ... skipping. By default, MySQL comes with a database named 'test' that anyone can access. This is also intended only for testing, and should be removed before moving into a production environment. Remove test database and access to it? [Y/n] n ... skipping. Reloading the privilege tables will ensure that all changes made so far will take effect immediately. Reload privilege tables now? [Y/n] y ... Success!
四. Cloudera Manager安装
在每台服务器上安装第三方依赖包，或者在Centos系统安装时安装好开发包
yum -y install chkconfig python bind-utils psmisc libxslt zlib sqlite cyrus-sasl-plain cyrus-sasl-gssapi fuse portmap fuse-libs redhat-lsb提前下载好cloudera-manager-el6-cm5.3.6_x86_64.tar.gz
http://archive.cloudera.com/cm5/cm/5/cloudera-manager-el6-cm5.3.6_x86_64.tar.gz在rac201服务器上创建CM的解压目录
mkdir -p /opt/cloudera-manager
tar -zxf cloudera-manager-el6-cm5.3.6_x86_64.tar.gz -C /opt/cloudera-manager
在rac201服务器上修改修改agent配置
vi /opt/cloudera-manager/cm-5.3.6/etc/cloudera-scm-agent/config.ini
Hostname of the CM server.
server_host=rac201.com server_port=7182拷贝解压后的CM文件夹到其他服务器
scp -r /opt/cloudera-manager/ root@rac202.com:/opt/
# scp -r /opt/cloudera-manager/ root@rac203.com:/opt/ # scp -r /opt/cloudera-manager/ root@rac204.com:/opt/ # scp -r /opt/cloudera-manager/ root@rac205.com:/opt/在所有服务器上创建CM的用户
useradd --system --home=/opt/cloudera-manager/cm-5.3.6/run/cloudera-scm-server --no-create-home --shell=/bin/false cloudera-scm
# cat /etc/passwd | grep cloudera-scm设置CM数据库的权限
mysql -uroot -p123456
mysql> grant all privileges on *.* to 'temp'@'%' identified by 'temp' with grant option; mysql> grant all privileges on *.* to 'temp'@'rac01.com' identified by 'temp' with grant option; mysql> flush privileges; mysql> use mysql; mysql> select host ,user from user; 进入rac201服务器以下文件夹，执行脚本命令，事先要将mysql-connector-java.jar放入/usr/share/java文件夹中 # cd /opt/cloudera-manager/cm-5.3.6/share/cmf/schema # ./scm_prepare_database.sh mysql -h rac01.com -utemp -ptemp --scm-host rac01.com scm scm scm提前下载好CDH源文件
CDH-5.3.6-1.cdh6.3.6.p0.11-el6.parcel
CDH-5.3.6-1.cdh6.3.6.p0.11-el6.parcel.sha
在rac201服务器上创建以下目录mkdir -p /opt/cloudera/parcel-repo
# mv CDH-5.3.6-1.cdh6.3.6.p0.11-el6.parcel* /opt/cloudera/parcel-repo/ 在所有服务器上创建 # mkdir -p /opt/cloudera/parcels 更改parcel目录的所有人 在rac201服务器上 # chown -R cloudera-scm:cloudera-scm /opt/cloudera/parcel-repo/ 在所有服务器上 # chown -R cloudera-scm:cloudera-scm /opt/cloudera/parcels启动CM的进程
在rac201服务器上cd /opt/cloudera-manager/cm-5.3.6/etc/init.d
# ./cloudera-scm-server start在所有服务器上启动agent进程
cd /opt/cloudera-manager/cm-5.3.6/etc/init.d/
# ./cloudera-scm-agent startCM的服务器登录界面
http://rac01.com:7180
登录账号和密码 admin admin
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