CentOS7.5,CDH6安装部署
集群规划
1.CDH简介
Cloudera’s Distribution, including Apache Hadoop
基于Web的用户界面,支持大多数Hadoop组件，包括HDFS、MapReduce、Hive、Pig、 Hbase、Zookeeper、Sqoop,简化了大数据平台的安装、使用难度。
2.硬件配置
*-u root -p 123456
| IP | HostName | OS | Cores | Memory | Disk | Remark |
|---|---|---|---|---|---|---|
| 172.20.32.1 | master | CentOS7.3 | 4 | 32G | 3T | NameNode，cloudera Server |
| 172.20.32.2 | slave1 | CentOS7.3 | 4 | 32G | 1.5T | NameNode，cloudera agent |
| 172.20.32.3 | slave2 | CentOS7.3 | 2 | 16G | 6.6T | DataNode，cloudera agent |
注意：假如是虚拟机，磁盘挂载单目录（无需分盘）
- 其中namenode用来部署HA，其中mysql,hdfs.namenode，Hbase.Master,Yarn.ResourceManager等
- datanode用来作为worker节点，还需承担zk，kafka等其他服务的部署
软件配置
- JDK1.8.0_131
- mysql5.6
172.20.32.37 3306
-u cdh6 -p 123456
| name | 版本 | 来源 | remak |
|---|---|---|---|
| CM | 6.0.1 | https://archive.cloudera.com/cm6/6.0.1/ | |
| CDH | 6.0.1 | https://archive.cloudera.com/cdh6/6.0.1/parcels/ | |
| hadoop | 3.0.0-cdh6.0.1 | cdh自带包 | |
| hive | 2.1.1-cdh6.0.1 | cdh自带包 | |
| hbase | 2.0.0-cdh6.0.1 | cdh自带包 | |
| solr | 7.0.0+cdh6.0.1 | cdh自带包 | |
| impala | 3.0.0-cdh6.0.1 | cdh自带包 | |
| hue | 3.9.0+cdh6.0.1 | cdh自带包 | |
| sqoop | 1.4.7-cdh6.0.1 | cdh自带包 | |
| kafka | 1.0.0-cdh6.0.1 | cdh自带包 | |
| spark | 2.2.0+cdh6.0.1 | cdh自带包 | |
| oozie | 5.0.0-beta1-cdh6.0.1 | cdh自带包 | |
| kudu | 1.6.0-cdh6.0.1 | cdh自带包 | |
| flume-ng | flume-ng | cdh自带包 |
注意：其他组件需要单独安装部署，eg:flink,kylin,ELK等
基础环境配置准备
1.关闭防火墙[master,slave1-2]
临时关闭防火墙
# systemctl stop firewalld
永久防火墙开机自启动
# systemctl disable firewalld
查看防火墙状态
# systemctl status firewalld
# systemctl status firewalld
Unit firewalld.service could not be found.
2.selinux关闭[master,slave1-2]
# vim /etc/sysconfig/selinux
SELINUX=disabled
重启机器，命令：
# reboot
重启后检查：
# sestatus –v
3.hostname config[master,slave1-2]
master上执行
# vim /etc/hosts
172.20.32.2 slave1
172.20.32.1 master
172.20.32.3 slave2
# vim /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=slave1
# ---------------------------
slave1上执行
# vim /etc/hosts
172.20.32.2 slave1
172.20.32.1 master
172.20.32.3 slave2
# vim /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=master
# -----------------------------
slave2上执行
# vim /etc/hosts
172.20.32.2 slave1
172.20.32.1 master
172.20.32.3 slave2
# vim /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=slave2
# --------------------------
4.NTP服务器设置[master,slave1-2]
一般默认即可！如有问题还请查阅相关资料
5.安装jdk[master,slave1-2]
安装之前先卸载CentOS7自带的JDK
查看系统已经装的jdk：
# rpm -qa|grep jdk
卸载jdk：
# rpm -e --nodeps java-1.6.0-openjdk-javadoc-1.6.0.0-1.66.1.13.0.el6.x86_64
1.下载“jdk-8u131-linux-x64.tar.gz”，放到/usr/java/目录下
2.解压
# tar -xzvf jdk-8u131-linux-x64.tar.gz
3.在任何目录下均可编辑
# vim /etc/profile.d/java_home.sh
export JAVA_HOME=/usr/java/jdk1.8.0_131
export JRE_HOME=$JAVA_HOME/jre
export PATH=$PATH:$JAVA_HOME/bin
export CLASSPATH=.:$JAVA_HOME/lib:$JRE_HOME/lib
# source /etc/profile.d/java_home.sh
注意！必须在该目录下安装JDK，后续cdh默认加载此路径的JDK**
6. 配置各节点之间ssh免密登录[master,slave1-2]
此步骤交给运维去做
1. CentOS默认没有启动ssh无密登录，
# vim /etc/ssh/sshd_config
去掉其中3行的注释，每台服务器都要置
开启 RSAAuthentication yes
开启 PubkeyAuthentication yes
开启 AuthorizedKeyFile .ssh/authorized_keys
# ssh-keygen -t rsa
一直按回车
# ls /root/.ssh/
id_rsa 和 id_rsa.pub
# cp id_rsa.pub authorized_keys
两个woker节点执行
# cat ~/.ssh/authorized_keys | ssh [email protected] 'cat >> ~/.ssh/authorized_keys'
master上执行
# scp authorized_keys [email protected]:/root/.ssh/
# scp authorized_keys [email protected]:/root/.ssh/
# scp known_hosts [email protected]:/root/.ssh/
# scp known_hosts [email protected]:/root/.ssh/
slave执行
# chmod 700 ~/.ssh
# chmod 600 ~/.ssh/authorized_keys
重启ssh服务
# systemctl restart sshd.service
验证能否无密码ssh，在master服务器上执行操作
# ssh slave1
不同用户之间退出
# logout
7.优化虚拟内存需求率[master,slave1-2]
检查虚拟内存需求率
# cat /proc/sys/vm/swappiness
显示如下：
30
临时降低虚拟内存需求率
# sysctl vm.swappiness=10
永久降低虚拟内存需求率
# echo 'vm.swappiness = 10' > /etc/sysctl.d/swappiness.conf
并运行如下命令使生效
# sysctl -p
8. 解决透明大页面问题[master,slave1-2]
检查透明大页面问题
# cat /sys/kernel/mm/transparent_hugepage/defrag
如果显示为：
[always] madvise never
临时关闭透明大页面问题
# echo never > /sys/kernel/mm/transparent_hugepage/defrag
确认配置生效
# cat /sys/kernel/mm/transparent_hugepage/defrag
应该显示为：
always madvise [never]
配置开机自动生效
# echo never > /sys/kernel/mm/transparent_hugepage/enabled
9.mysql安装
FAQ
采用的是DBA提供的172.20.32.37 这个服务器上的mysql
10 拷贝mysql-connector-java到各个节点指定目录下[master,slave1-2]
[root@master ~]# cp mysql-connector-java-5.1.44-bin.jar /usr/share/java/mysql-connector-java.jar
11.创建数据库[172.20.32.37]
> mysql -u root -p 123456
CREATE DATABASE db_cdh6_amon DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;
CREATE DATABASE db_cdh6_hue DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;
CREATE DATABASE db_cdh6_metastore DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;
CREATE DATABASE db_cdh6_sentry DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;
CREATE DATABASE db_cdh6_oozie DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci
CREATE DATABASE db_cdh6_hive DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;
GRANT ALL ON db_cdh6_scm.* TO 'cdh6'@'%' IDENTIFIED BY '123456';
GRANT ALL ON db_cdh6_amon.* TO 'cdh6'@'%' IDENTIFIED BY '123456';
GRANT ALL ON db_cdh6_hue.* TO 'cdh6'@'%' IDENTIFIED BY '123456';
GRANT ALL ON db_cdh6_metastore.* TO 'cdh6'@'%' IDENTIFIED BY '123456';
GRANT ALL ON db_cdh6_sentry.* TO 'cdh6'@'%' IDENTIFIED BY '123456';
GRANT ALL ON db_cdh6_oozie.* TO 'cdh6'@'%' IDENTIFIED BY '123456';
GRANT ALL ON db_cdh6_hive.* TO 'cdh6'@'%' IDENTIFIED BY '123456';
FLUSH PRIVILEGES;
Cloudera Manager安装
1、配置 Cloudera Manager 仓库master,slave1-2
[root@master ~]# wget https://archive.cloudera.com/cm6/6.0.1/redhat7/yum/cloudera-manager.repo -P /etc/yum.repos.d/
[root@master ~]# rpm --import https://archive.cloudera.com/cm6/6.0.1/redhat7/yum/RPM-GPG-KEY-cloudera
[root@slave1 ~]# wget https://archive.cloudera.com/cm6/6.0.1/redhat7/yum/cloudera-manager.repo -P /etc/yum.repos.d/
[root@slave1 ~]# rpm --import https://archive.cloudera.com/cm6/6.0.1/redhat7/yum/RPM-GPG-KEY-cloudera
[root@slave2 ~]# wget https://archive.cloudera.com/cm6/6.0.1/redhat7/yum/cloudera-manager.repo -P /etc/yum.repos.d/
[root@slave2 ~]# rpm --import https://archive.cloudera.com/cm6/6.0.1/redhat7/yum/RPM-GPG-KEY-cloudera
使用仓库安装会比较慢，建议先把需要的rpm下载下来，进行离线安装或者建私有仓库，主要下面的三个软件包：
cloudera-manager-agent-6.0.1-610811.el7.x86_64.rpm
cloudera-manager-daemons-6.0.1-610811.el7.x86_64.rpm
cloudera-manager-server-6.0.1-610811.el7.x86_64.rpm
//cloudera-manager-daemons 是 server 和 agent 必须安装的。
构建本地仓库(2) [任意服务器]
- master
cm6.0.1
[root@slave3 ~]# sudo yum install httpd
[root@slave3 ~]# sudo systemctl start httpd
[root@slave3 ~]# sudo mkdir -p /var/www/html/cloudera-repos
[root@slave3 ~]# sudo wget --recursive --no-parent --no-host-directories https://archive.cloudera.com/cm6/6.0.1/redhat7/ -P /var/www/html/cloudera-repos
[root@slave3 ~]# sudo chmod -R ugo+rX /var/www/html/cloudera-repos/cm6
- cdh6.0.1
[root@slave3 ~]# sudo wget --recursive --no-parent --no-host-directories https://archive.cloudera.com/cdh6/6.0.1/parcels/CDH-6.0.1-1.cdh6.0.1.p0.590678-el7.parcel -P /var/www/html/cloudera-repos
[root@slave3 ~]# sudo wget --recursive --no-parent --no-host-directories https://archive.cloudera.com/cdh6/6.0.1/parcels/CDH-6.0.1-1.cdh6.0.1.p0.590678-el7.parcel.sha256 -P /var/www/html/cloudera-repos
[root@slave3 ~]# sudo wget --recursive --no-parent --no-host-directories https://archive.cloudera.com/cdh6/6.0.1/parcels/manifest.json -P /var/www/html/cloudera-repos
[root@slave3 ~]# sudo wget --recursive --no-parent --no-host-directories https://archive.cloudera.com/gplextras6/6.0.1/redhat7/ -P /var/www/html/cloudera-repos
[root@slave3 ~]# sudo chmod -R ugo+rX /var/www/html/cloudera-repos/cdh6
创建访问端口
[root@slave3 ~]# cd /var/www/html
[root@slave3 ~]# python -m SimpleHTTPServer 8900
构建yum源[master,slave1-2]
[root@master ~]# vim /etc/yum.repos.d/cloudera-repo.repo
[root@slave1 ~]# vim /etc/yum.repos.d/cloudera-repo.repo
[root@slave2 ~]# vim /etc/yum.repos.d/cloudera-repo.repo
[cloudera-repo]
name=cloudera-repo
baseurl=http://master:8900/cloudera-repos/cm6/6.0.1/redhat7/yum/
enabled=1
gpgcheck=0
2.安装 CM Server 和 Agent
建议离线安装，把rpm包下载到服务器上面，传到其他节点一份，再本地安装，速度会快很多。
- master：
[root@master ~]# yum install cloudera-manager-daemons cloudera-manager-agent cloudera-manager-server
- slave1,slave2：
[root@slave1 ~]# yum install cloudera-manager-daemons cloudera-manager-agent
[root@slave2 ~]# yum install cloudera-manager-daemons cloudera-manager-agent
3.设置 Cloudera Manager 数据库
mysql在本地时执行：
[root@master ~]# rm -rf //cloudera-scm-server/db.mgmt.properties
[root@master ~]# /opt/cloudera/cm/schema/scm_prepare_database.sh mysql db_cdh6_scm -h172.20.32.37 -uroot -p'blf1#root' --scm-host 172.20.32.1 db_cdh6_scm scm scm
JAVA_HOME=/usr/java/jdk1.8.0_131
Verifying that we can write to /etc/cloudera-scm-server
Creating SCM configuration file in /etc/cloudera-scm-server
Executing: /usr/java/jdk1.8.0_131/bin/java -cp /usr/share/java/mysql-connector-java.jar:/usr/share/java/oracle-connector-java.jar:/usr/share/java/postgresql-connector-java.jar:/opt/cloudera/cm/schema/../lib/* com.cloudera.enterprise.dbutil.DbCommandExecutor /etc/cloudera-scm-server/db.properties com.cloudera.cmf.db.
[ main] DbCommandExecutor INFO Successfully connected to database.
All done, your SCM database is configured correctly!
注意！上面最好指定ip,切勿使用hostname很容易出现问题
4.安装 CDH[master]
配置CDH的软件包 parcels(namenode01)
CM安装成功之后，接下来我们就可以通过CM安装CDH的方式构建企业大数据平台。所以首先需要把CDH的parcels包下载到CM主服务器上。
同样的，我们为了加速我们的安装，我们可以把需要下载的软件包提前下载下来，也可以创建CDH私有仓库。
[root@master ~]# cd /opt/cloudera/parcel-repo
[root@master ~]# wget http://172.20.32.36/package/CDH/CDH-6.0.1-1/CDH-6.0.1-1.cdh6.0.1.p0.590678-el7.parcel
[root@master ~]# wget https://archive.cloudera.com/cdh6/6.0.1/parcels/manifest.json
[root@master ~]# wget https://archive.cloudera.com/cdh6/6.0.1/parcels/CDH-6.0.1-1.cdh6.0.1.p0.590678-el7.parcel.sha256
[root@master ~]# mv CDH-6.0.1-1.cdh6.0.1.p0.590678-el7.parcel.sha256 CDH-6.0.1-1.cdh6.0.1.p0.590678-el7.parcel.sha
也可以执行下面的操作
在manifest.json文件中，找到对应版本的秘钥，复制到.sha文件中。
[root@master ~]# echo "2e650f1f1ea020a3efc98a231b85c2df1a50b030" > CDH-6.0.1-1.cdh6.0.1.p0.590678-el7.parcel.sha
修改属主属组。
[root@master ~]# chown cloudera-scm.cloudera-scm /opt/cloudera/parcel-repo/ *
启动 Cloudera Manager Server[master]
[root@master ~]# systemctl start cloudera-scm-server
如果启动中有什么问题，可以查看日志。[master]
[root@master ~]# tail -f /var/log/cloudera-scm-server/cloudera-scm-server.log
参考：
http://blog.51cto.com/wzlinux/2321433
https://www.cloudera.com/documentation/enterprise/6/6.0/topics/installation.html