CDH6大数据集群离线安装

• • 前言、为什么要用离线的方式安装CDH6大数据集群
  • 一、下载安装包
  • 二、开通CentOS7云服务器
  • 三、编辑映射文件
  • 四、配置SSH免密登录
  • 五、编写集群分发脚本
  • 六、上传CDH6安装包到云服务器
  • 七、安装MySQL(主节点)
  • • 1.下载并安装mysql
    • 2. 登录后修改密码（尽量复杂一点，太简单了验证不通过，也可以查看如何关闭mysql校验规则）
    • 3.重启服务并设置开机启动
    • 4.下载并安装JDBC 驱动
    • 5.创建CDH所需要的数据库
  • 八、配置Cloudera Manager yum库（主节点）
  • 九、安装JDK（所有节点）
  • • 1.在主节点上安装JDK
    • 2.在其他节点上安装JDK(以节点cdh002为例)
  • 十、安装Cloudera Manager
  • • 1.安装Cloudera Manager Server & Agent (主节点)
    • 2.安装Cloudera Manager Agent(其他节点)
    • 3.修改agent配置，指向Server节点cdh001 （所有节点）
    • 4.启动 agent 服务（所有节点）
    • 5. 初始化scm数据库
    • 6. 启动Cloudera Manager Server(主节点)
  • 十一、安装CDH集群
  • • 通过浏览器访问Cloudera Manager WEB界面
    • 欢迎页面
    • 接受条款
    • 版本选择
    • 第二个欢迎界面
    • 设置群集名称
    • 选择主机
    • 选择存储库
    • • CDH and other software
    • Install Parcels
    • 主机检查
    • 选择服务类型
    • 角色分配
    • 数据库设置
    • 审核更改
    • 等待命令执行完成
    • 安装完成
    • 进入监控界面

前言、为什么要用离线的方式安装CDH6大数据集群

CDH，全称Cloudera’s Distribution, including Apache Hadoop。是Hadoop众多分支中对应中的一种，由Cloudera维护，基于稳定版本的Apache Hadoop构建，提供了Hadoop的核心（可扩展存储、分布式计算），最为重要的是提供基于web的用户界面。

CDH的优点：版本划分清晰，更新速度快，支持Kerberos安全认证，支持多种安装方式（如Yum、rpm等）。

CDH分为Cloudera Manager管理平台和CDH parcel（parcel包含各种组件的安装包）。

Cloudera公司最近在官网宣布：

从2021年1月31日开始，所有Cloudera软件都需要有效的订阅，并且只能通过付费墙进行访问。

也就是说CDH各版本都不能免费获取了。很多以前的文章、书籍中提到CDH大数据平台，都是会引用Cloudera官网下载地址，例如：https://archive.cloudera.com/cm6/6.2.0/redhat7/yum/RPMS/x86_64/

现在开始要输入账号密码认证了。用Cloudera的账号密码的话，会得到如下失败信息：

403 Forbidden (varnish) the provided credentials were incorrect

说明没有权限获取CDH了。在Cloudera官网社区里有很多讨论。

解决办法如下：

1.使用开源的Hadoop、Spark、Hive等分别安装；

2.使用自己或别人以前下载过的CDH安装包，共享使用，官网说的是CDH6.6以后收费，以前的还是可以使用。

链接: https://pan.baidu.com/s/1ION1DoWnqpfVO_sBx0GpeA 提取码: rqyi

一、下载安装包

从共享的百度网盘链接将CDH安装包下载到本地工作机，如下所示：

~/workspace$ tree CDH
CDH
├── CDH
│   ├── CDH-6.3.2-1.cdh6.3.2.p0.1605554-el7.parcel
│   ├── CDH-6.3.2-1.cdh6.3.2.p0.1605554-el7.parcel.sha1
│   ├── CDH-6.3.2-1.cdh6.3.2.p0.1605554-el7.parcel.sha256
│   └── manifest.json
└── ClouderaManager
    ├── cloudera-manager-agent-6.3.1-1466458.el7.x86_64.rpm
    ├── cloudera-manager-daemons-6.3.1-1466458.el7.x86_64.rpm
    ├── cloudera-manager-server-6.3.1-1466458.el7.x86_64.rpm
    ├── cloudera-manager-server-db-2-6.3.1-1466458.el7.x86_64.rpm
    ├── enterprise-debuginfo-6.3.1-1466458.el7.x86_64.rpm
    └── oracle-j2sdk1.8-1.8.0+update181-1.x86_64.rpm

二、开通CentOS7云服务器

1.创建实例

2.实例创建完成后，列表如下

三、编辑映射文件

root@cdh001:~# vim /etc/hosts

在该文件中添加如下内容：

172.18.48.175   cdh001.tigoyi.com       cdh001
172.18.48.176   cdh002.tigoyi.com       cdh002
172.18.48.177   cdh003.tigoyi.com       cdh003

确认编辑正确：

[root@cdh001 ~]# cat /etc/hosts
::1	localhost	localhost.localdomain	localhost6	localhost6.localdomain6
127.0.0.1	localhost	localhost.localdomain	localhost4	localhost4.localdomain4

172.18.48.175   cdh001.tigoyi.com       cdh001
172.18.48.176   cdh002.tigoyi.com       cdh002
172.18.48.177   cdh003.tigoyi.com       cdh003

四、配置SSH免密登录

1.执行以下命令，创建公钥和私钥。

[root@cdh001 ～]# ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa): 
Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
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:
SHA256:tZBH8ykK49WNoil/KjsDbfwu+5siAmEJ8MprfpHMrY0 root@cdh001
The key's randomart image is:
+---[RSA 2048]----+
|o         o      |
|..       + = .   |
|. o   o = * +    |
|o+   . * * o     |
|oooo+ + S .      |
|. o=++           |
|.o o=.. .        |
|+ .E*..+         |
| o..o@*.         |
+----[SHA256]-----+

敲3次回车，就会生成两个文件id_rsa（私钥）、id_rsa.pub（公钥）。

2.将公钥拷贝到要免密登录的目标机器上

将公钥拷贝到本机

[root@cdh001 ~]# ssh-copy-id cdh001
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub"
The authenticity of host 'cdh001 (172.18.48.175)' can't be established.
ECDSA key fingerprint is SHA256:ZjNmP0BKmg4ugXev5ZrlWjTjypVf+Fp2mexLGiDogjc.
ECDSA key fingerprint is MD5:3b:5b:ce:dc:24:3d:83:e3:9b:97:80:4d:b0:4b:ef:25.
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@cdh001's password: 

Number of key(s) added: 1

Now try logging into the machine, with:   "ssh 'cdh001'"
and check to make sure that only the key(s) you wanted were added.

将公钥拷贝到机器cdh002

[root@cdh001 ~]# ssh-copy-id cdh002

现在当前机器cdh001可以免密登录到目标机器cdh002。
类似的，将公钥拷贝到机器cdh003

[root@cdh001 ~]# ssh-copy-id cdh003

五、编写集群分发脚本

1.需求：循环复制文件到所有节点的相同目录下
2.需求分析：
（a）期望脚本使用方法：

xsync <要同步的文件路径>

（b）说明：在/root/bin这个目录下存放的脚本，root用户可以在系统任何地方直接执行。
3.脚本实现
（a）在/root目录下创建bin目录，并在bin目录下xsync创建文件，操作如下：

root@cdh001:~# cd /usr/local/bin
root@cdh001:/usr/local/bin# vim xsync
root@cdh001:/usr/local/bin#

在该文件中编写如下代码

#!/bin/bash
#1获取输入参数个数，如果没有参数，直接退出
pcount=$#
if((pcount==0));then
    echo no args;
    exit;
fi

#2获取文件路径
p1=$1
fname=`basename $p1`
echo fname=$fname

#3获取上级目录到绝对路径
pdir=`cd -P $(dirname $p1);pwd`
echo pdir=$pdir

#4获取当前用户名称
user=`whoami`

#5循环
for((num=2;num<4;num++));do
    host=$(printf "%03d" "$num")
    echo -------------------cdh$host--------------
    rsync -rvl $pdir/$fname $user@cdh$host:$pdir
done

（b）修改脚本xsync具有执行权限

root@cdh001:/usr/local/bin# chmod 777 xsync

（c）调用脚本形式：

xsync <文件路径>

（d）分发集群分发脚本

[root@cdh001 ~]# xsync /usr/local/bin/xsync
fname=xsync
pdir=/usr/local/bin
-------------------cdh002--------------
sending incremental file list
xsync

sent 597 bytes  received 35 bytes  1,264.00 bytes/sec
total size is 508  speedup is 0.80
-------------------cdh003--------------
sending incremental file list
xsync

sent 597 bytes  received 35 bytes  1,264.00 bytes/sec
total size is 508  speedup is 0.80

（e）分发映射文件

[root@cdh001 ~]# xsync /etc/hosts
fname=hosts
pdir=/etc
-------------------cdh002--------------
sending incremental file list
hosts

sent 379 bytes  received 41 bytes  840.00 bytes/sec
total size is 291  speedup is 0.69
-------------------cdh003--------------
sending incremental file list
hosts

sent 379 bytes  received 41 bytes  840.00 bytes/sec
total size is 291  speedup is 0.69

六、上传CDH6安装包到云服务器

~/workspace$ rsync -rvl CDH/ root@39.108.122.82:/root/CDH
root@39.108.122.82's password: 
sending incremental file list
created directory /root/CDH
./
CDH/
CDH/CDH-6.3.2-1.cdh6.3.2.p0.1605554-el7.parcel
CDH/CDH-6.3.2-1.cdh6.3.2.p0.1605554-el7.parcel.sha1
CDH/CDH-6.3.2-1.cdh6.3.2.p0.1605554-el7.parcel.sha256
CDH/manifest.json
ClouderaManager/
ClouderaManager/cloudera-manager-agent-6.3.1-1466458.el7.x86_64.rpm
ClouderaManager/cloudera-manager-daemons-6.3.1-1466458.el7.x86_64.rpm
ClouderaManager/cloudera-manager-server-6.3.1-1466458.el7.x86_64.rpm
ClouderaManager/cloudera-manager-server-db-2-6.3.1-1466458.el7.x86_64.rpm
ClouderaManager/enterprise-debuginfo-6.3.1-1466458.el7.x86_64.rpm
ClouderaManager/oracle-j2sdk1.8-1.8.0+update181-1.x86_64.rpm

sent 3,496,611,440 bytes  received 257 bytes  1,221,097.15 bytes/sec
total size is 3,495,756,962  speedup is 1.00

七、安装MySQL(主节点)

1.下载并安装mysql

下载并安装

[root@cdh001 ~]# wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm
[root@cdh001 ~]# yum -y install mysql57-community-release-el7-10.noarch.rpm
[root@cdh001 ~]# yum -y install mysql-community-server

启动服务

[root@cdh001 ~]# systemctl start mysqld

查看状态

[root@cdh001 ~]# systemctl status mysqld

查看mysql临时密码

[root@cdh001 ~]# grep "password" /var/log/mysqld.log
2021-04-15T07:31:51.264538Z 1 [Note] A temporary password is generated for root@localhost: LeuhBAe2ai,u

2. 登录后修改密码（尽量复杂一点，太简单了验证不通过，也可以查看如何关闭mysql校验规则）

[root@cdh001 ~]# mysql -u root -p
mysql> set global validate_password_policy=0; 
Query OK, 0 rows affected (0.00 sec)

mysql> set global validate_password_length=4;
Query OK, 0 rows affected (0.00 sec)

mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY '123465';
Query OK, 0 rows affected (0.01 sec)

mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)

3.重启服务并设置开机启动

[root@cdh001 ~]# systemctl enable mysqld
[root@cdh001 ~]# systemctl restart mysqld

4.下载并安装JDBC 驱动

要求使用5.1.26以上版本的jdbc驱动，可点击这里直接下载mysql-connector-java-5.1.47.tar.gz

[root@cdh001 ~]# wget https://dev.mysql.com/get/Downloads/Connector-J/mysql-connector-java-5.1.47.tar.gz

[root@cdh001 ~]# tar -xzf mysql-connector-java-5.1.47.tar.gz 
[root@cdh001 ~]# ll mysql-connector-java-5.1.47
总用量 2452
-rw-r--r-- 1 root root   91845 8月   7 2018 build.xml
-rw-r--r-- 1 root root  248527 8月   7 2018 CHANGES
-rw-r--r-- 1 root root   18122 8月   7 2018 COPYING
-rw-r--r-- 1 root root 1007505 8月   7 2018 mysql-connector-java-5.1.47-bin.jar
-rw-r--r-- 1 root root 1007502 8月   7 2018 mysql-connector-java-5.1.47.jar
-rw-r--r-- 1 root root   61407 8月   7 2018 README
-rw-r--r-- 1 root root   63658 8月   7 2018 README.txt
drwxr-xr-x 8 root root    4096 8月   7 2018 src

[root@cdh001 ~]# mkdir -p /usr/share/java
[root@cdh001 ~]# mv mysql-connector-java-5.1.47/mysql-connector-java-5.1.47-bin.jar /usr/share/java/mysql-connector-java.jar

5.创建CDH所需要的数据库

根据所需要安装的服务参照下表创建对应的数据库以及数据库用户，数据库必须使用utf8编码，创建数据库时要记录好用户名及对应密码：

服务名	数据库名	用户名	密码
Cloudera Manager Server	scm	scm	123465
Activity Monitor	amon	amon	123465
Reports Manager	rman	rman	123465
Hue	hue	hue	123465
Hive Metastore Server	metastore	hive	123465
Sentry Server	sentry	sentry	123465
Cloudera Navigator Audit Server	nav	nav	123465
Cloudera Navigator Metadata Server	navms	navms	123465
Oozie	oozie	oozie	123465

创建sql脚步文件

[root@cdh001 ~]# vim cdhinit.sql

添加内容如下：

# scm
CREATE DATABASE scm DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;
GRANT ALL ON scm.* TO 'scm'@'%' IDENTIFIED BY '123465';

# amon
CREATE DATABASE amon DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;
GRANT ALL ON amon.* TO 'amon'@'%' IDENTIFIED BY '123465';

# rman
CREATE DATABASE rman DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;
GRANT ALL ON rman.* TO 'rman'@'%' IDENTIFIED BY '123465';

# hue
CREATE DATABASE hue DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci; 
GRANT ALL ON hue.* TO 'hue'@'%' IDENTIFIED BY '123465';

# hive
CREATE DATABASE metastore DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;
GRANT ALL ON metastore.* TO 'hive'@'%' IDENTIFIED BY '123465';

# sentry
CREATE DATABASE sentry DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;   
GRANT ALL ON sentry.* TO 'sentry'@'%' IDENTIFIED BY '123465';

# nav
CREATE DATABASE nav DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;      
GRANT ALL ON nav.* TO 'nav'@'%' IDENTIFIED BY '123465';

# navms
CREATE DATABASE navms DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;
GRANT ALL ON navms.* TO 'navms'@'%' IDENTIFIED BY '123465';

# oozie
CREATE DATABASE oozie DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;
GRANT ALL ON oozie.* TO 'oozie'@'%' IDENTIFIED BY '123465';

# flush
FLUSH PRIVILEGES;

SHOW DATABASES;

修改mysql密码校验策略

[root@cdh001 ~]# mysql -u root -p

mysql>  set global validate_password_policy=LOW; 
Query OK, 0 rows affected (0.00 sec)

mysql> set global validate_password_length=6;
Query OK, 0 rows affected (0.00 sec)

mysql> SHOW VARIABLES LIKE 'validate_password%';
+--------------------------------------+-------+
| Variable_name                        | Value |
+--------------------------------------+-------+
| validate_password_check_user_name    | OFF   |
| validate_password_dictionary_file    |       |
| validate_password_length             | 6     |
| validate_password_mixed_case_count   | 1     |
| validate_password_number_count       | 1     |
| validate_password_policy             | LOW   |
| validate_password_special_char_count | 1     |
+--------------------------------------+-------+
7 rows in set (0.00 sec)

运行脚本

mysql> source /root/cdhinit.sql
Query OK, 1 row affected (0.00 sec)

Query OK, 0 rows affected, 1 warning (0.00 sec)

Query OK, 1 row affected (0.00 sec)

Query OK, 0 rows affected, 1 warning (0.00 sec)

Query OK, 1 row affected (0.00 sec)

Query OK, 0 rows affected, 1 warning (0.00 sec)

Query OK, 1 row affected (0.00 sec)

Query OK, 0 rows affected, 1 warning (0.00 sec)

Query OK, 1 row affected (0.00 sec)

Query OK, 0 rows affected, 1 warning (0.00 sec)

Query OK, 1 row affected (0.00 sec)

Query OK, 0 rows affected, 1 warning (0.00 sec)

Query OK, 1 row affected (0.00 sec)

Query OK, 0 rows affected, 1 warning (0.00 sec)

Query OK, 1 row affected (0.00 sec)

Query OK, 0 rows affected, 1 warning (0.00 sec)

Query OK, 1 row affected (0.00 sec)

Query OK, 0 rows affected, 1 warning (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

+--------------------+
| Database           |
+--------------------+
| information_schema |
| amon               |
| hue                |
| metastore          |
| mysql              |
| nav                |
| navms              |
| oozie              |
| performance_schema |
| rman               |
| scm                |
| sentry             |
| sys                |
+--------------------+
13 rows in set (0.00 sec)

八、配置Cloudera Manager yum库（主节点）

首先安装httpd和createrepo：

[root@cdh001 ~]# yum -y install httpd createrepo

启动httpd服务并设置开机自启动：

[root@cdh001 ~]# systemctl start httpd
[root@cdh001 ~]# systemctl enable httpd
Created symlink from /etc/systemd/system/multi-user.target.wants/httpd.service to /usr/lib/systemd/system/httpd.service.

将上传的CDH安装包移到httpd的html目录下:

[root@cdh001 ~]# mv CDH/ /var/www/html/

生成RPM元数据：

[root@cdh001 ~]# cd /var/www/html/CDH/ClouderaManager/
[root@cdh001 ClouderaManager]# createrepo .
Spawning worker 0 with 3 pkgs
Spawning worker 1 with 3 pkgs
Workers Finished
Saving Primary metadata
Saving file lists metadata
Saving other metadata
Generating sqlite DBs
Sqlite DBs complete
[root@cdh001 ClouderaManager]# ll
总用量 1380428
-rw-r--r-- 1 root root   10483568 4月  15 12:42 cloudera-manager-agent-6.3.1-1466458.el7.x86_64.rpm
-rw-r--r-- 1 root root 1203832464 4月  15 12:58 cloudera-manager-daemons-6.3.1-1466458.el7.x86_64.rpm
-rw-r--r-- 1 root root      11488 4月  15 12:58 cloudera-manager-server-6.3.1-1466458.el7.x86_64.rpm
-rw-r--r-- 1 root root      10996 4月  15 12:58 cloudera-manager-server-db-2-6.3.1-1466458.el7.x86_64.rpm
-rw-r--r-- 1 root root   14209868 4月  15 12:58 enterprise-debuginfo-6.3.1-1466458.el7.x86_64.rpm
-rw-r--r-- 1 root root  184988341 4月  15 13:01 oracle-j2sdk1.8-1.8.0+update181-1.x86_64.rpm
drwxr-xr-x 2 root root       4096 4月  15 14:09 repodata

接着再创建ClouderaManager的repo文件

[root@cdh001 ClouderaManager]# vim /etc/yum.repos.d/cloudera-manager.repo

添加如下内容：

[cloudera-manager]
name=Cloudera Manager 6
baseurl=http://cdh001/CDH/ClouderaManager/
gpgcheck=0
enabled=1

分发

[root@cdh001 ~]# xsync /etc/yum.repos.d/cloudera-manager.repo

修改 /etc/httpd/conf/httpd.conf 配置文件

把第284行的 AddType application/x-gzip .gz .tgz 修改为 AddType application/x-gzip .gz .tgz .parcel

重启httpd服务

[root@cdh001 ~]# systemctl restart httpd

九、安装JDK（所有节点）

1.在主节点上安装JDK

[root@cdh001 ~]# yum install oracle-j2sdk1.8

设置环境变量

[root@cdh001 ~]# vim /etc/profile

添加如下内容：

#java
export JAVA_HOME=/usr/java/jdk1.8.0_181-cloudera/
export PATH=$JAVA_HOME/bin:$PATH
export CLASSPATH=.:$JAVA_HOME/lib

环境变量生效

[root@cdh001 ~]# source /etc/profile
[root@cdh001 ~]# java -version
java version "1.8.0_181"
Java(TM) SE Runtime Environment (build 1.8.0_181-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.181-b13, mixed mode)

分发配置文件

[root@cdh001 ~]# xsync /etc/profile

2.在其他节点上安装JDK(以节点cdh002为例)

[root@cdh001 ~]# ssh cdh002

Welcome to Alibaba Cloud Elastic Compute Service !

[root@cdh002 ~]# yum install oracle-j2sdk1.8

[root@cdh002 ~]# source /etc/profile
[root@cdh002 ~]# java -version
java version "1.8.0_181"
Java(TM) SE Runtime Environment (build 1.8.0_181-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.181-b13, mixed mode)

十、安装Cloudera Manager

1.安装Cloudera Manager Server & Agent (主节点)

[root@cdh001 ~]# yum install cloudera-manager-daemons cloudera-manager-agent cloudera-manager-server

2.安装Cloudera Manager Agent(其他节点)

[root@cdh002 ~]# yum install cloudera-manager-daemons cloudera-manager-agent
[root@cdh003 ~]# yum install cloudera-manager-daemons cloudera-manager-agent

3.修改agent配置，指向Server节点cdh001 （所有节点）

[root@cdh001 ~]# sed -i "s/server_host=localhost/server_host=cdh001/g" /etc/cloudera-scm-agent/config.ini
[root@cdh001 ~]# xsync /etc/cloudera-scm-agent/config.ini

4.启动 agent 服务（所有节点）

[root@cdh001 ~]# systemctl start cloudera-scm-agent
[root@cdh001 ~]# ssh cdh002
Last login: Thu Apr 15 14:46:05 2021 from 172.18.48.175

Welcome to Alibaba Cloud Elastic Compute Service !

[root@cdh002 ~]# systemctl start cloudera-scm-agent
[root@cdh002 ~]# 登出
Connection to cdh002 closed.
[root@cdh001 ~]# ssh cdh003
Last login: Thu Apr 15 14:49:01 2021 from 172.18.48.175

Welcome to Alibaba Cloud Elastic Compute Service !

[root@cdh003 ~]# systemctl start cloudera-scm-agent
[root@cdh003 ~]# 登出
Connection to cdh003 closed.

5. 初始化scm数据库

[root@cdh001 ~]# /opt/cloudera/cm/schema/scm_prepare_database.sh mysql scm scm 123465

All done, your SCM database is configured correctly!

6. 启动Cloudera Manager Server(主节点)

[root@cdh001 ~]# systemctl start cloudera-scm-server

[root@cdh001 ~]# systemctl status cloudera-scm-server
● cloudera-scm-server.service - Cloudera CM Server Service
   Loaded: loaded (/usr/lib/systemd/system/cloudera-scm-server.service; enabled; vendor preset: disabled)
   Active: active (running) since 四 2021-04-15 16:09:21 CST; 33s ago
  Process: 12900 ExecStartPre=/opt/cloudera/cm/bin/cm-server-pre (code=exited, status=0/SUCCESS)
 Main PID: 12903 (java)
   CGroup: /system.slice/cloudera-scm-server.service
           └─12903 /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-conne...

查看启动日志

[root@cdh001 ~]# tail -f /var/log/cloudera-scm-server/cloudera-scm-server.log

看到下面的信息，说明启动完成

2021-04-15 16:11:08,771 INFO WebServerImpl:com.cloudera.server.cmf.WebServerImpl: Started Jetty server.

十一、安装CDH集群

通过浏览器访问Cloudera Manager WEB界面

打开浏览器，访问地址：http://<server_host>:7180，默认账号和密码都为admin：

欢迎页面

首先是Cloudera Manager的欢迎页面，点击页面右下角的【继续】按钮进行下一步：

接受条款

勾选接受条款，点击【继续】进行下一步：

版本选择

这里选择免费版：

第二个欢迎界面

选择版本以后会出现第二个欢迎界面，不过这个是安装集群的欢迎页：

设置群集名称

选择主机

这一步是要选择用于安装CDH集群的主机：

选择存储库

CDH and other software

点击更多选项添加远程Parcel存储库
http://39.108.122.82/CDH/CDH/

Fix:
在阿里云服务器上url应该改为http://cdh001/CDH/CDH/，采用公网ip会限速

返回后会加载出CDH版本，确认无误后点击【继续】：

Install Parcels

主机检查

等待检查完成即可：

选择服务类型

这里我选择Data Engineering
Process, develop, and serve predictive models.
服务: HDFS、YARN（含 MapReduce 2）、ZooKeeper、Oozie、Hive、Hue 和 Spark

角色分配

CDH会自动给出一个角色分配，如果觉得不合理，我们可以手动调整一下，注意角色分配均衡：

数据库设置

审核更改

等待命令执行完成

安装完成

进入监控界面