CDH5.7.2-Hadoop集群CentOS7下的搭建(离线安装)

项目管理 来源:huxin008 96℃ 0评论

说明:在本地虚拟机环境中进行CDH5.7.2集群的搭建,在搭建之前请先在虚拟机上装好三台CentOS7,三台内存分别为8g,2g,2g

准备

IP地址 主机名 说明
192.168.160.130 hadoop1 主节点master,datanode
192.168.160.131 hadoop2 datanode
192.168.160.132 hadoop3 datanode

开始安装前配置和预装软件

  • 安装jdk(每台机器都要)
    首先卸载原有的openJDK
[root@hadoop1~]$ java -version
java version "1.7.0_75"
OpenJDK Runtime Environment (rhel-2.5.4.2.el7_0-x86_64 u75-b13)
OpenJDK 64-Bit Server VM (build 24.75-b04, mixed mode)
[root@hadoop1~]$ rpm -qa | grep jdk
java-1.7.0-openjdk-1.7.0.75-2.5.4.2.el7_0.x86_64
java-1.7.0-openjdk-headless-1.7.0.75-2.5.4.2.el7_0.x86_64
[root@hadoop1~]# yum -y remove java-1.7.0-openjdk-1.7.0.75-2.5.4.2.el7_0.x86_64
[root@hadoop1~]# yum -y remove java-1.7.0-openjdk-headless-1.7.0.75-2.5.4.2.el7_0.x86_64
[root@hadoop1~]# java -version
bash: /usr/bin/java: No such file or directory
[root@hadoop1~]# rpm -ivh jdk-8u101-linux-x64.rpm 
[root@hadoop1~]# java -version
java version "1.8.0_101"
Java(TM) SE Runtime Environment (build 1.8.0_101-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.101-b13, mixed mode)
  • 修改每台节点服务器的有关配置hostname、selinux关闭,防火墙关闭
    hostname修改:分别对三台都进行更改,并且注意每台名称和ip,每台都要配上hosts
[root@hadoop1~]# vi /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=hadoop1
[root@hadoop1~]# vi /etc/hosts
127.0.0.1 localhost.hadoop1
192.168.160.132  hadoop3
192.168.160.130  hadoop1
192.168.160.131  hadoop2

selinux关闭(所有节点官方文档要求)

[root@hadoop1~]# vim /etc/sysconfig/selinux
SELINUX=disabled
重启才能生效
重启后检查
[root@hadoop1~]#sestatus -v
SELinux status: disabled
表示已经关闭了

关闭防火墙(注意centos 6 防火墙好像是iptables)

[root@hadoop1~]# systemctl stop firewalld
[root@hadoop1~]# systemctl disable firewalld
rm '/etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service'
rm '/etc/systemd/system/basic.target.wants/firewalld.service'
[root@hadoop1~]# systemctl status firewalld
firewalld.service - firewalld - dynamic firewall daemon
   Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled) Active: inactive (dead)

NTP服务器设置(用于不同节点间实现时间同步)

NTP服务的安装和配置
[root@hadoop1~]#yum -y install ntp
更改master的节点
[root@hadoop1~]## vi /etc/ntp.conf
注释掉所有server *.*.*的指向,新添加一条可连接的ntp服务器(百度一下ntp服务器,我选的是上海交大的)
server ntp.sjtu.edu.cn iburst
在其他节点上把ntp指向master服务器地址即可(/etc/ntp.conf下)
server 192.168.160.130 iburst
所有节点
  • SSH无密码登录配置
    安装过程中master需要各个节点的root免登录密码
    先在master上生成公钥
[root@hadoop1]# ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa): [enter]
Created directory '/root/.ssh'.
Enter passphrase (empty for no passphrase): [enter]
Enter same passphrase again: [enter]
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
1d:b1:99:51:31:d8:f6:6c:b1:84:f9:af:7b:2c:72:dd root@hadoop1
The key's randomart image is:
+--[ RSA 2048]----+
|          o+++   |
|          .*=.o  |
|          =. = o |
|         . .  *  |
|        S .  . . |
|                .|
|               +.|
|            . + E|
|             o.+ |
+-----------------+
[root@hadoop1]# ssh-copy-id 192.168.160.131
The authenticity of host '192.168.160.131 (192.168.160.131)' can't be established.
ECDSA key fingerprint is e6:81:3f:9e:e6:bb:43:36:c7:4e:0f:6f:63:b2:12:a0.
Are you sure you want to continue connecting (yes/no)? yes
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
root@192.168.160.131's password: 

Number of key(s) added: 1

Now try logging into the machine, with:   "ssh '192.168.160.131'"
and check to make sure that only the key(s) you wanted were added.

分别对两台节点进行以上操作,操作完了可以通过ssh ip进行验证是否可以无需输入密码就能直接登录到节点服务器上去

  • 安装mysql
    centos7自带的是mariadb,需要先卸载掉
[root@hadoop1]# rpm -qa | grep mariadb
mariadb-libs-5.5.41-2.el7_0.x86_64
[root@hadoop1 huxin]# rpm -e --nodeps mariadb-libs-5.5.41-2.el7_0.x86_64

将下载好的mysql rpm包拷贝到服务器上然后解压

[root@hadoop1]# tar -xvf MySQL-5.6.24-1.linux_glibc2.5.x86_64.rpm-bundle.tar 

然后安装释出的全部rpm:rpm -ivh MySQL-*.rpm
修改配置文件路径:cp /usr/share/mysql/my-default.cnf /etc/my.cnf
在配置文件中增加以下配置并保存

[root@hadoop1]#vim /etc/my.cnf
[mysqld]
default-storage-engine = innodb
innodb_file_per_table
collation-server = utf8_general_ci
init-connect = 'SET NAMES utf8'
character-set-server = utf8

以上就是安装好了。然后就初始化mysql
然后初始化数据库执行

[root@hadoop1]#/usr/bin/mysql_install_db

注意这个时候我遇到以下问题:

"FATAL ERROR: please install the following Perl modules before executing /usr/local/mysql/scripts/mysql_install_db:
Data::Dumper "

经过查询需要安装perl-Module

[root@hadoop1 ~]# yum install -y perl-Module-Install.noarch

等待安装完了然后就可以执行上面的初始化语句了

- 启动mysql
[root@hadoop1]# service mysql restart
 ERROR! MySQL server PID file could not be found!
Starting MySQL... SUCCESS! 
- 查看mysql root初始化密码
[root@hadoop1]# cat /root/.mysql_secret
# The random password set for the root user at Fri Sep 16 11:13:25 2016 (local time): 9mp7uYFmgt6drdq3
- 登录进行去更改密码
[root@hadoop1]# mysql -u root -p
mysql> SET PASSWORD=PASSWORD('123456');
- 允许mysql远程访问
mysql> update user set host='%' where user='root' and host='localhost';
Query OK, 1 row affected (0.05 sec)
Rows matched: 1  Changed: 1  Warnings: 0
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
- 配置开机启动
[root@hadoop1]# chkconfig mysql on

拷贝mysql-connector-java到各个节点指定目录下(所有的节点)

[root@hadoop1]# cp mysql-connector-java-5.1.36-bin.jar /usr/share/java/mysql-connector-java.jar

创建数据库

create database hive DEFAULT CHARSET utf8 COLLATE utf8_general_ci;
Query OK, 1 row affected (0.00 sec)
create database amon DEFAULT CHARSET utf8 COLLATE utf8_general_ci;
Query OK, 1 row affected (0.00 sec)
create database hue DEFAULT CHARSET utf8 COLLATE utf8_general_ci;
Query OK, 1 row affected (0.00 sec)
 create database monitor DEFAULT CHARSET utf8 COLLATE utf8_general_ci;
Query OK, 1 row affected (0.00 sec)
create database oozie DEFAULT CHARSET utf8 COLLATE utf8_general_ci;
Query OK, 1 row affected (0.00 sec)
grant all on *.* to root@"%" Identified by "123456";

安装Cloudera-Manager

  • 解压cm tar包到指定目录所有服务器都要
[root@hadoop1 ~]#mkdir /opt/cloudera-manager
[root@hadoop1 ~]# tar -axvf cloudera-manager-centos7-cm5.7.2_x86_64.tar.gz -C /opt/cloudera-manager
  • 创建cloudera-scm用户(所有节点)
[root@hadoop1 ~]# useradd --system --home=/opt/cloudera-manager/cm-5.7.2/run/cloudera-scm-server --no-create-home --shell=/bin/false --comment "Cloudera SCM User" cloudera-scm
  • 在主节点创建cloudera-manager-server的本地元数据保存目录
[root@hadoop1 ~]# mkdir /var/cloudera-scm-server
[root@hadoop1 ~]# chown cloudera-scm:cloudera-scm /var/cloudera-scm-server
[root@hadoop1 ~]# chown cloudera-scm:cloudera-scm /opt/cloudera-manager
  • 配置从节点cloudera-manger-agent指向主节点服务器
vim /opt/cloudera-manager/cm-5.7.2/etc/cloudera-scm-agent/config.ini
将server_host改为CMS所在的主机名即hadoop1
  • 主节点中创建parcel-repo仓库目录
[root@hadoop1 ~]# mkdir -p /opt/cloudera/parcel-repo
[root@hadoop1 ~]# chown cloudera-scm:cloudera-scm /opt/cloudera/parcel-repo
[root@hadoop1 ~]# cp CDH-5.7.2-1.cdh5.7.2.p0.18-el7.parcel CDH-5.7.2-1.cdh5.7.2.p0.18-el7.parcel.sha manifest.json /opt/cloudera/parcel-repo
注意:其中CDH-5.7.2-1.cdh5.7.2.p0.18-el5.parcel.sha1 后缀要把1去掉
  • 所有节点创建parcels目录
[root@hadoop1 ~]# mkdir -p /opt/cloudera/parcels
[root@hadoop1 ~]# chown cloudera-scm:cloudera-scm /opt/cloudera/parcels
解释:Clouder-ManagerCDHs从主节点的/opt/cloudera/parcel-repo目录中抽取出来,分发解压激活到各个节点的/opt/cloudera/parcels目录中】
  • 初始脚本配置数据库scm_prepare_database.sh(在主节点上)
[root@hadoop1 ~]# /opt/cloudera-manager/cm-5.7.2/share/cmf/schema/scm_prepare_database.sh mysql -hhadoop1 -uroot -p123456 --scm-host hadoop1 scmdbn scmdbu scmdbp
说明:这个脚本就是用来创建和配置CMS需要的数据库的脚本。各参数是指:
mysql:数据库用的是mysql,如果安装过程中用的oracle,那么该参数就应该改为oracle。
-hhadoop1:数据库建立在hadoop1主机上面。也就是主节点上面。 -uroot:root身份运行mysql。-123456:mysql的root密码是***。 --scm-host hadoop1:CMS的主机,一般是和mysql安装的主机是在同一个主机上。 最后三个参数是:数据库名,数据库用户名,数据库密码。

注意:如果执行的时候报一下错误,可能是配置host的有问题,127.0.0.1 localhost.hadoop1 这个localhost不能少

ERROR com.cloudera.enterprise.dbutil.DbProvisioner  - Exception when creating/dropping database with user 'root' and jdbc url 'jdbc:mysql://localhost/?useUnicode=true&characterEncoding=UTF-8'
java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES)

这里我也遇到以下另一个问题

ERROR com.cloudera.enterprise.dbutil.DbProvisioner  - Exception when creating/dropping database with user 'root' and jdbc url 'jdbc:mysql://localhost/?useUnicode=true&characterEncoding=UTF-8'
java.sql.SQLException: Your password has expired. To log in you must change it using a client that supports expired passwords.
这里可以重新设置mysql的数据,然后刷新,或者直接将过期设置不检测
mysql> update user set password_expired='N' where user='root';
Query OK, 2 rows affected (0.00 sec)
Rows matched: 5  Changed: 2  Warnings: 0

mysql> flush privileges;
  • 启动主节点cloudera-scm-server
[root@hadoop1 ~]# cp /opt/cloudera-manager/cm-5.7.2/etc/init.d/cloudera-scm-server /etc/init.d/cloudera-scm-server
[root@hadoop1 ~]#chkconfig cloudera-scm-server on

此时service cloudera-scm-serverstart的话会报错:“File not found: /usr/sbin/cmf-server”,因为cloudera-scm-server里面的变量路径配置不正确!

[root@hadoop1 ~]# vim /etc/init.d/cloudera-scm-server
CMF_DEFAULTS=${CMF_DEFAULTS:-/etc/default}改为=/opt/cloudera-manager/cm-5.7.2/etc/default
此时service cloudera-scm-server start就不会报错了
同时为了保证在每次服务器重启的时候都能启动cloudera-scm-server,应该在开机启动脚本/etc/rc.local中加入命令:service cloudera-scm-server restart
  • 启动cloudera-scm-agent所有节点
[root@hadoopX ~]# mkdir /opt/cloudera-manager/cm-5.7.2/run/cloudera-scm-agent
[root@hadoopX ~]# cp /opt/cloudera-manager/cm-5.7.2/etc/init.d/cloudera-scm-agent /etc/init.d/cloudera-scm-agent
[root@hadoopX ~]# chkconfig cloudera-scm-agent on
同样此时service cloudera-scm-agent start的话会报错:File not found: /usr/sbin/cmf-agent,因为cloudera-scm-agent里面的变量路径配置不正确!参照cms的配置
同时为了保证在每次服务器重启的时候都能启动cloudera-scm-agent,应该在开机启动脚本/etc/rc.local中加入命令:service cloudera-scm-agent restart

在浏览器安装CDHs

等待主节点安装并且启动就在浏览器中进行操作了
进入192168.160.130:7180 默认使用admin admin登录
以下在浏览器中使用操作安装

选择express版本
选择express版本

组件提示
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配置主机!由于我们在各个节点都安装启动了agent,并且在中各个节点都在配置文件中指向hadoop1是server节点,所以各个节点的agent就会给agent发消息报告,所以这里我们可以在“当前管理的主机”中看到三个主机,全部勾选并继续,注意如果cloudera-scm-agent没有设为开机启动,如果以上有重启这里可能会检测不到其他服务器。
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选择cdh
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分发parcels到各个节点
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之间正确性的检测
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选择要安装的服务,这里选择所有服务
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角色分配
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数据库设置选择
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集群审核,这里都默认的
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开始安装这里写图片描述

安装完成这里写图片描述
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这个时候安装完成了,可以在浏览器中进入192.168.160.130:7180地址,查看集群情况,我这里有挺多报警,大概查看下基本都是内存或者存储空间使用阈值的报警,由于我们是本地虚拟机的,所以这些条件都有限,这里暂时不care这些报警了
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安装完成!!!