内容简介：这是坚持技术写作计划（含翻译）的第17篇，定个小目标999，每周最少2篇。本文主要介绍hadoop发行版CDH最新版(6.2)的安装。本地搭建镜像源，加速构建。参考
这是坚持技术写作计划（含翻译）的第17篇，定个小目标999，每周最少2篇。
本文主要介绍hadoop发行版CDH最新版(6.2)的安装。
准备
硬件配置
| IP | HostName | OS | Cores | Mem | Disk | Rules |
|---|---|---|---|---|---|---|
| 192.168.20.24 | cdh01.anjia.com | centos7.6 mini | 4 | 16G | 100G | CM6,CDH agent |
| 192.168.20.25 | cdh02.anjia.com | centos7.6 mini | 4 | 16G | 100G | CDH agent |
| 192.168.20.28 | cdh03.anjia.com | centos7.6 mini | 4 | 16G | 100G | CDH agent |
软件包
本地搭建镜像源，加速构建。参考 018-CDH6.2构建本地源加速CDH安装
安装前准备
CM存储空间规划
参考 Storage Space Planning for Cloudera Manager
配置网络名
# cdh01.anjia.com 192.168.20.24 sudo hostnamectl set-hostname cdh01.anjia.com cat << EOF | sudo tee -a /etc/hosts 192.168.20.24 cdh01.anjia.com cdh01 192.168.20.25 cdh02.anjia.com cdh02 192.168.20.28 cdh03.anjia.com cdh03 EOF echo "HOSTNAME=cdh01.anjia.com" >> /etc/sysconfig/network # cdh02.anjia.com 192.168.20.25 sudo hostnamectl set-hostname cdh02.anjia.com cat << EOF | sudo tee -a /etc/hosts 192.168.20.24 cdh01.anjia.com cdh01 192.168.20.25 cdh02.anjia.com cdh02 192.168.20.28 cdh03.anjia.com cdh03 EOF echo "HOSTNAME=cdh02.anjia.com" >> /etc/sysconfig/network # cdh03.anjia.com 192.168.20.28 sudo hostnamectl set-hostname cdh03.anjia.com cat << EOF | sudo tee -a /etc/hosts 192.168.20.24 cdh01.anjia.com cdh01 192.168.20.25 cdh02.anjia.com cdh02 192.168.20.28 cdh03.anjia.com cdh03 EOF echo "HOSTNAME=cdh03.anjia.com" >> /etc/sysconfig/network
禁用防火墙
每台都执行
sudo iptables-save > ~/firewall.rules sudo systemctl disable firewalld sudo systemctl stop firewalld
开启ntp同步时钟
每台都执行
yum install -y ntp sed -i "/^server/ d" /etc/ntp.conf cat << EOF | sudo tee -a /etc/ntp.conf server ntp1.aliyun.com server ntp2.aliyun.com server ntp3.aliyun.com server ntp4.aliyun.com EOF sudo systemctl start ntpd sudo systemctl enable ntpd ntpdate -u ntp1.aliyun.com hwclock --systohc
修改repo
每台都执行
sudo wget https://archive.cloudera.com/cm6/6.2.0/redhat7/yum/cloudera-manager.repo -P /etc/yum.repos.d/ sed -i "s/https\:\/\/archive.cloudera.com/http\:\/\/192.168.20.24\/cloudera-repos/g" /etc/yum.repos.d/cloudera-manager.repo sudo rpm --import https://archive.cloudera.com/cm6/6.2.0/redhat7/yum/RPM-GPG-KEY-cloudera
优化虚拟内存需求率
每台都执行
echo 'vm.swappiness = 10' >> /etc/sysctl.conf sysctl -p
解决透明大页面问题
echo never > /sys/kernel/mm/transparent_hugepage/defrag echo never > /sys/kernel/mm/transparent_hugepage/enabled
安装jdk
每台都执行
sudo yum install -y oracle-j2sdk1.8 cat << EOF | sudo tee -a /etc/profile #设置 java 环境 export JAVA_HOME=/usr/java/jdk1.8.0_181-cloudera/ export CLASSPATH=.:\$JAVA_HOME/lib:\$JAVA_HOME/jre/lib:\$CLASSPATH export PATH=\$JAVA_HOME/bin:\$JAVA_HOME/jre/bin:\$PATH EOF source /etc/profile
安装CM和CDH
安装CM
在cdh01.anjia.com执行
sudo yum install -y cloudera-manager-daemons cloudera-manager-agent cloudera-manager-server
启用Auto-TLS,在CM6.2.0人工不启用auto-tls会导致登陆不成功
sudo JAVA_HOME=/usr/java/jdk1.8.0_181-cloudera /opt/cloudera/cm-agent/bin/certmanager --location /opt/cloudera/CMCA setup --configure-services
安装数据库
本文选择MariaDB
在cdh01.anjia.com执行
sudo yum install -y mariadb-server sudo systemctl stop mariadb cat << EOF | sudo tee -a /etc/my.cnf.d/cdh-db.cnf [mysqld] transaction-isolation = READ-COMMITTED # Disabling symbolic-links is recommended to prevent assorted security risks; # to do so, uncomment this line: symbolic-links = 0 # Settings user and group are ignored when systemd is used. # If you need to run mysqld under a different user or group, # customize your systemd unit file for mariadb according to the # instructions in http://fedoraproject.org/wiki/Systemd key_buffer = 16M key_buffer_size = 32M max_allowed_packet = 32M thread_stack = 256K thread_cache_size = 64 query_cache_limit = 8M query_cache_size = 64M query_cache_type = 1 max_connections = 550 #expire_logs_days = 10 #max_binlog_size = 100M #log_bin should be on a disk with enough free space. #Replace '/var/lib/mysql/mysql_binary_log' with an appropriate path for your #system and chown the specified folder to the mysql user. log_bin=/var/lib/mysql/mysql_binary_log #In later versions of MariaDB, if you enable the binary log and do not set #a server_id, MariaDB will not start. The server_id must be unique within #the replicating group. server_id=1 binlog_format = mixed read_buffer_size = 2M read_rnd_buffer_size = 16M sort_buffer_size = 8M join_buffer_size = 8M # InnoDB settings innodb_file_per_table = 1 innodb_flush_log_at_trx_commit = 2 innodb_log_buffer_size = 64M innodb_buffer_pool_size = 4G innodb_thread_concurrency = 8 innodb_flush_method = O_DIRECT innodb_log_file_size = 512M EOF sudo systemctl enable mariadb sudo systemctl start mariadb sudo /usr/bin/mysql_secure_installation [...] Enter current password for root (enter for none): OK, successfully used password, moving on... [...] Set root password? [Y/n] Y New password: Re-enter new password: [...] Remove anonymous users? [Y/n] Y [...] Disallow root login remotely? [Y/n] N [...] Remove test database and access to it [Y/n] Y [...] Reload privilege tables now? [Y/n] Y [...] All done! If you've completed all of the above steps, your MariaDB installation should now be secure. Thanks for using MariaDB!
安装数据库驱动
每台都执行
wget https://dev.mysql.com/get/Downloads/Connector-J/mysql-connector-java-5.1.46.tar.gz tar zxvf mysql-connector-java-5.1.46.tar.gz sudo mkdir -p /usr/share/java/ cd mysql-connector-java-5.1.46 sudo cp mysql-connector-java-5.1.46-bin.jar /usr/share/java/mysql-connector-java.jar
创建数据库
在cdh01.anjia.com执行
mysql -u root -p<password> CREATE DATABASE <database> DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci; GRANT ALL ON <database>.* TO '<user>'@'%' IDENTIFIED BY '<password>';
这一步scm是必须的，其余的数据库可以等后边真实使用时再创建。
| Service | Database | User |
|---|---|---|
| Cloudera Manager Server | scm | scm |
| Activity Monitor | amon | amon |
| Reports Manager | rman | rman |
| Hue | hue | hue |
| Hive Metastore Server | metastore | hive |
| Sentry Server | sentry | sentry |
| Cloudera Navigator Audit Server | nav | nav |
| Cloudera Navigator Metadata Server | navms | navms |
| Oozie | oozie | oozie |
配置CM数据库
sudo /opt/cloudera/cm/schema/scm_prepare_database.sh [options] <databaseType> <databaseName> <databaseUser> <password> # 输出 JAVA_HOME=/usr/java/jdk1.8.0_181-cloudera 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_181-cloudera/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!
详细参数，参考 Syntax for scm_prepare_database.sh
安装CDH和其他软件
sudo systemctl start cloudera-scm-server # 启动后，监听server日志，大约1-3分钟左右 sudo tail -f /var/log/cloudera-scm-server/cloudera-scm-server.log # 直到日志出现，如下内容，即启动成功。 2019-05-08 13:12:26,523 INFO WebServerImpl:com.cloudera.server.cmf.WebServerImpl: Started Jetty server.
参考资料
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