1.简介

本文介绍了Ambari2.7.4在CentOS7.5中使用本地镜像方式进行加速部署。

Ambari

Apache Ambari是一种基于Web的工具，支持Apache Hadoop集群的供应、管理和监控。Ambari已支持大多数Hadoop组件，包括HDFS、MapReduce、Hive、Pig、 Hbase、Zookeeper、Sqoop和Hcatalog等。

详细官方说明内容参见

https://docs.cloudera.com/HDPDocuments/Ambari-2.7.4.0/bk_ambari-installation/content/ch_Installing_Ambari.html

2.环境准备

节点IP及映射

192.168.21.129 master

192.168.21.130 node1

192.168.21.131 node2

4台均安装好jdk

yum install -y java-1.8.0-openjdk



vi /etc/profile

export JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.232.b09-0.el7_7.x86_64/jre

export PATH=$PATH:$JAVA_HOME/bin

export CLASSPATH=.:$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jar



source /etc/profile



for a in {1..2} ; do scp /etc/profile node$a:/etc/profile ; done

for a in {1..2}; do ssh root@node$a source /etc/profile; done

系统初始化参数

cat >> /etc/sysctl.conf << EOF
fs.file-max=1000000
net.ipv4.tcp_max_tw_buckets = 6000
net.ipv4.tcp_sack = 1
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_rmem = 4096 87380 4194304
net.ipv4.tcp_wmem = 4096 16384 4194304
net.ipv4.tcp_max_syn_backlog = 16384
net.core.netdev_max_backlog = 32768
net.core.somaxconn = 32768
net.core.wmem_default = 8388608
net.core.rmem_default = 8388608
net.core.rmem_max = 16777216
net.core.wmem_max = 16777216
net.ipv4.tcp_timestamps = 1
net.ipv4.tcp_fin_timeout = 20
net.ipv4.tcp_synack_retries = 2
net.ipv4.tcp_syn_retries = 2
net.ipv4.tcp_syncookies = 1
#net.ipv4.tcp_tw_len = 1
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_mem = 94500000 915000000 927000000
net.ipv4.tcp_max_orphans = 3276800
net.ipv4.ip_local_port_range = 1024 65000
net.nf_conntrack_max = 6553500
net.netfilter.nf_conntrack_max = 6553500
net.netfilter.nf_conntrack_tcp_timeout_close_wait = 60
net.netfilter.nf_conntrack_tcp_timeout_fin_wait = 120
net.netfilter.nf_conntrack_tcp_timeout_time_wait = 120
net.netfilter.nf_conntrack_tcp_timeout_established = 3600
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
kernel.numa_balancing = 0
kernel.shmmax = 68719476736
kernel.printk = 5
kernel.sysrq = 1
vm.overcommit_memory = 0
vm.swappiness = 0
EOF

文件描述符和用户最大进程数

### 调整文件描述符
cat >> /etc/security/limits.conf <<EOF
* soft nproc 65535 
* hard nproc 65535 
* soft nofile 65535 
* hard nofile 65535 
EOF
##用户进程限制
cat >> /etc/security/limits.d/20-nproc.conf <<EOF
* soft nproc 8192
root soft nproc unlimited
EOF

网络配置

修改 hostname

master执行

hostnamectl set-hostname master

依次修改所有节点 node[1-2]上分别执行

hostnamectl set-hostname node1

vi /etc/hosts

增加如下内容

192.168.21.129 master

192.168.21.130 node1

192.168.21.131 node2

for a in {1..2} ; do scp /etc/hosts node$a:/etc/hosts ; done

3.SSH 免密码登录

1.在集群master的 /etc/ssh/sshd_config 文件去掉以下选项的注释

vi /etc/ssh/sshd_config

RSAAuthentication yes #开启私钥验证 PubkeyAuthentication yes #开启公钥验证

2.将集群master 修改后的 /etc/ssh/sshd_config 通过 scp 命令复制发送到集群的每一个节点

for a in {1..2} ; do scp /etc/ssh/sshd_config node$a:/etc/ssh/sshd_config ; done

3.生成公钥、私钥

1.在集群的每一个节点节点输入命令 ssh-keygen -t rsa -P ''，生成 key，一律回车

ssh-keygen -t rsa -P ''

4.在集群的master 节点输入命令

将集群每一个节点的公钥id_rsa.pub放入到自己的认证文件中authorized_keys;

ssh root@master cat /root/.ssh/id_rsa.pub >> /root/.ssh/authorized_keys

for a in {1..2}; do ssh root@node$a cat /root/.ssh/id_rsa.pub >> /root/.ssh/authorized_keys; done

5.在集群的master 节点输入命令

将自己的认证文件 authorized_keys 通过 scp 命令复制发送到每一个节点上去: /root/.ssh/authorized_keys`

for a in {1..2}; do scp /root/.ssh/authorized_keys root@node$a:/root/.ssh/authorized_keys ; done

6.在集群的每一个节点节点输入命令

接重启ssh服务

sudo systemctl restart sshd.service

7.验证 ssh 无密登录

开一个其他窗口测试下能否免密登陆

例如：在node3

ssh root@node2

exit 退出

4.服务环境

关闭SELINUX

vi /etc/selinux/config

将 SELINUX=enforcing 改为 SELINUX=disabled

设置后需要重启才能生效

PS 我是修改node1 的 /etc/selinux/config 后，把配置文件复制到其他节点

for a in {1..2}; do scp /etc/selinux/config root@node$a:/etc/selinux/config ; done

关闭防火墙（各台均执行）

systemctl stop firewalld.service

systemctl disable firewalld

安装配置 MySql

yum install -y wget

wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm

rpm -ivh mysql57-community-release-el7-10.noarch.rpm

yum -y install mysql-community-server

systemctl enable mysqld

systemctl start mysqld.service

systemctl status mysqld.service

grep "password" /var/log/mysqld.log

mysql -uroot -p

set global validate_password_policy=0;

set global validate_password_length=1;

set global validate_password_special_char_count=0;

set global validate_password_mixed_case_count=0;

set global validate_password_number_count=0;

select @@validate_password_number_count,@@validate_password_mixed_case_count,@@validate_password_number_count,@@validate_password_length;



ALTER USER 'root'@'localhost' IDENTIFIED BY 'password';

grant all privileges on *.* to 'root'@'%' identified by 'password' with grant option;

flush privileges;

exit

yum -y remove mysql57-community-release-el7-10.noarch

下载mysql驱动，放到三台的

/opt/ambari/mysql-connector-java-5.1.48.jar

5.本地源搭建

下载repo

https://docs.cloudera.com/HDPDocuments/Ambari-2.7.4.0/bk_ambari-installation/content/download_the_ambari_repo_lnx7.html

yum install -y wget

wget -nv http://public-repo-1.hortonworks.com/ambari/centos7/2.x/updates/2.7.4.0/ambari.repo -O /etc/yum.repos.d/ambari.repo

wget -nv http://public-repo-1.hortonworks.com/HDP/centos7/3.x/updates/3.1.4.0/hdp.repo -O /etc/yum.repos.d/hdp.repo

安装httpd本地源

yum -y install httpd

systemctl restart httpd

systemctl enable httpd

此时浏览器访问http://ip/即可看到站点首页

网站目录为/var/www/html/，目前为空

下载

http://public-repo-1.hortonworks.com/ambari/centos7/2.x/updates/2.7.4.0/ambari-2.7.4.0-centos7.tar.gz

http://public-repo-1.hortonworks.com/HDP/centos7/3.x/updates/3.1.4.0/HDP-3.1.4.0-centos7-rpm.tar.gz

http://public-repo-1.hortonworks.com/HDP-UTILS-1.1.0.22/repos/centos7/HDP-UTILS-1.1.0.22-centos7.tar.gz

http://public-repo-1.hortonworks.com/HDP-GPL/centos7/3.x/updates/3.1.4.0/HDP-GPL-3.1.4.0-centos7-gpl.tar.gz

mkdir /var/www/html/ambari

mkdir /var/www/html/hdp

mkdir /var/www/html/hdp/HDP-UTILS-1.1.0.22

tar -zxvf ambari-2.7.4.0-centos7.tar.gz -C /var/www/html/ambari/

tar -zxvf HDP-3.1.4.0-centos7-rpm.tar.gz -C /var/www/html/hdp/

tar -zxvf HDP-GPL-3.1.4.0-centos7-gpl.tar.gz -C /var/www/html/hdp/

tar -zxvf HDP-UTILS-1.1.0.22-centos7.tar.gz -C /var/www/html/hdp/HDP-UTILS-1.1.0.22/

修改

vi /etc/yum.repos.d/ambari.repo

#VERSION_NUMBER=2.7.4.0-118

[ambari-2.7.4.0]

#json.url = http://public-repo-1.hortonworks.com/HDP/hdp_urlinfo.json

name=ambari Version - ambari-2.7.4.0

baseurl=http://192.168.21.129/ambari/ambari/centos7/2.7.4.0-118

gpgcheck=1

gpgkey=http://192.168.21.129/ambari/ambari/centos7/2.7.4.0-118/RPM-GPG-KEY/RPM-GPG-KEY-Jenkins

enabled=1

priority=1

6.安装

https://docs.cloudera.com/HDPDocuments/Ambari-2.7.4.0/bk_ambari-installation/content/set_up_the_ambari_server.html

yum install ambari-server

ambari-server setup

不推荐直接用内嵌的postgresql，因为其他服务还要用mysql

[root@localhost download]# ambari-server setup
Using python  /usr/bin/python
Setup ambari-server
Checking SELinux...
SELinux status is 'enabled'
SELinux mode is 'permissive'
WARNING: SELinux is set to 'permissive' mode and temporarily disabled.
OK to continue [y/n] (y)? y
Customize user account for ambari-server daemon [y/n] (n)? y
Enter user account for ambari-server daemon (root):
Adjusting ambari-server permissions and ownership...
Checking firewall status...
Checking JDK...
[1] Oracle JDK 1.8 + Java Cryptography Extension (JCE) Policy Files 8
[2] Custom JDK
==============================================================================
Enter choice (1): 2
WARNING: JDK must be installed on all hosts and JAVA_HOME must be valid on all hosts.
WARNING: JCE Policy files are required for configuring Kerberos security. If you plan to use Kerberos,please make sure JCE Unlimited Strength Jurisdiction Policy Files are valid on all hosts.
Path to JAVA_HOME: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.242.b08-0.el7_7.x86_64/jre
Validating JDK on Ambari Server...done.
Check JDK version for Ambari Server...
JDK version found: 8
Minimum JDK version is 8 for Ambari. Skipping to setup different JDK for Ambari Server.
Checking GPL software agreement...
GPL License for LZO: https://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html
Enable Ambari Server to download and install GPL Licensed LZO packages [y/n] (n)? y
Completing setup...
Configuring database...
Enter advanced database configuration [y/n] (n)? y
Configuring database...
==============================================================================
Choose one of the following options:
[1] - PostgreSQL (Embedded)
[2] - Oracle
[3] - MySQL / MariaDB
[4] - PostgreSQL
[5] - Microsoft SQL Server (Tech Preview)
[6] - SQL Anywhere
[7] - BDB
==============================================================================
Enter choice (1): 3
Hostname (localhost): 
Port (3306): 
Database name (ambari): 
Username (ambari): 
Enter Database Password (bigdata): 
Configuring ambari database...
Enter full path to custom jdbc driver: /opt/ambari/mysql-connector-java-5.1.48.jar
Copying /opt/ambari/mysql-connector-java-5.1.48.jar to /usr/share/java
Configuring remote database connection properties...
WARNING: Before starting Ambari Server, you must run the following DDL directly from the database shell to create the schema: /var/lib/ambari-server/resources/Ambari-DDL-MySQL-CREATE.sql
Proceed with configuring remote database connection properties [y/n] (y)? y
Extracting system views...
.....
Ambari repo file contains latest json url http://public-repo-1.hortonworks.com/HDP/hdp_urlinfo.json, updating stacks repoinfos with it...
Adjusting ambari-server permissions and ownership...
Ambari Server 'setup' completed successfully.

初始化数据库

mysql -uroot -p

create database ambari;

use ambari

source /var/lib/ambari-server/resources/Ambari-DDL-MySQL-CREATE.sql



CREATE USER 'ambari'@'localhost' IDENTIFIED BY 'bigdata';

CREATE USER 'ambari'@'%' IDENTIFIED BY 'bigdata';

GRANT ALL PRIVILEGES ON ambari.* TO 'ambari'@'localhost';

GRANT ALL PRIVILEGES ON ambari.* TO 'ambari'@'%';

FLUSH PRIVILEGES;

7.启动

仅从master机器上启动即可：

ambari-server start

出现Server started listening on 8080

表示成功

如果主机启动监听8080，但超时失败，需要netstat -tunlp找到8080端口的进程号，kill -9 pid停掉已启动的占用端口进程方可。

8.Web页面部署服务

进入web页面继续部署

访问

http://192.168.81.147:8080/

用户名密码都是admin

点击 “LAUNCH INSTALL WIZARD”，开始创建一个集群

起一个名字下一步

Repositories里移除掉其他系统，只保留redhat7，修改为本地源，下一步

http://192.168.21.129/hdp/HDP/centos7/3.1.4.0-315

http://192.168.21.129/hdp/HDP-GPL/centos7/3.1.4.0-315

http://192.168.21.129/hdp/HDP-UTILS-1.1.0.22/HDP-UTILS/centos7/1.1.0.22

Target Hosts里填写其他IP，如

master

node1

node2

SSH Private Key这个文本框里，把cat /root/.ssh/id_rsa 的内容拷贝过来

下一步等待安装

安装第一次有可能失败，

从机报错

Host registration aborted. Ambari Agent host cannot reach Ambari Server 'localhost:8080'. Please check the network connectivity between the Ambari Agent host and the Ambari Server

看上面日志，scp拷贝/usr/lib/ambari-server/lib/ambari_server/setupAgent.py这个文件，然后执行

vi /usr/lib/ambari-server/lib/ambari_server/setupAgent.py

编辑下这个文件

(expected_hostname, passPhrase, hostname, user_run_as, projectVersion, server_port) = retcode["parsed_args"]

hostname="192.168.21.129"

server_port=8080

retcode = checkServerReachability(hostname, server_port)

添加标红一行，指定hostname

再retry一次就好了

报错

Ambari agent machine hostname (localhost.localdomain) does not match expected ambari server hostname (node1). Aborting registration. Please check hostname, hostname -f and /etc/hosts file to confirm your hostname is setup correctly

一台主机名不对（漏掉了），改名即可

#三台从机上会出现/var/lib/ambari-agent/目录

下一步选择需要安装的服务，此步骤选择一些自己需要的服务，