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CDH5.7.2-Hadoop集群CentOS7下的搭建(离线安装)

2016-09-24 09:53 756 查看

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，博客为原创，转载请标明出处，另外由于各环境有版本等情况不同，大家在安装时特别是第一次安装的时候可能遇到的坑与我遇到的不一样，这个时候要仔细看下agent和server的日志种是否有报错然后可以网上查找解决办法

准备

JDK环境

版本：jdk-8u101-linux-x64.rpm

下载地址：oracle官网

mysql

rpm包：http://dev.mysql.com/get/Downloads/MySQL-5.6/MySQL-5.6.26-1.linux_glibc2.5.x86_64.rpm-bundle.tar

jdbc连接包mysql-connector-java.jar:

http://dev.mysql.com/downloads/connector/j/

CDH安装相关的包

cloudera manager包：5.7.2 cloudera-manager-centos7-cm5.7.2_x86_64.tar.gz

下载地址：http://archive.cloudera.com/cm5/cm/5/cloudera-manager-centos7-cm5.7.2_x86_64.tar.gz

CDH-5.7.2-1.cdh5.7.2.p0.18-el7.parcel

CDH-5.7.2-1.cdh5.7.2.p0.18-el7.parcel.sha1

manifest.json

以上三个下载地址在http://archive.cloudera.com/cdh5/parcels/5.7.2/，注意centos要下载el7的，我就因为一开始不清楚下的el5，结果提示parcels不知道redhat7，搞了好久才还原到初始重新来过

虚拟机准备：相关安装略过，准备好三台环境一样的centos在本地虚拟机VMWare上，建议三台内存分别为8g,2g,2g，其中最大的那台可以当作主机，如果内存不够就设少点，三台虚拟机情况如下：


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(或者在主节点解压好，然后通过scp到各个节点同一目录下)

[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-Manager将CDHs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

组件提示

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。