[root@linuxprobe ~]# yum -y install centos-release-scl-rh centos-release-scl
# set [priority=10]
[root@linuxprobe ~]# sed -i -e "s/\]$/\]\npriority=10/g" /etc/yum.repos.d/CentOS-SCLo-scl.repo
[root@linuxprobe ~]# sed -i -e "s/\]$/\]\npriority=10/g" /etc/yum.repos.d/CentOS-SCLo-scl-rh.repo
# for another way, change to [enabled=0] and use it only when needed
[root@linuxprobe ~]# sed -i -e "s/enabled=1/enabled=0/g" /etc/yum.repos.d/CentOS-SCLo-scl.repo
[root@linuxprobe ~]# sed -i -e "s/enabled=1/enabled=0/g" /etc/yum.repos.d/CentOS-SCLo-scl-rh.repo
# if [enabled=0], input a command to use the repository
[root@linuxprobe ~]# yum --enablerepo=centos-sclo-rh install [Package]
[root@linuxprobe ~]# yum --enablerepo=centos-sclo-sclo install [Package]
# 安装ruby
yum --enablerepo=centos-sclo-rh -y install rh-ruby22

# 加载环境变量
[root@linuxprobe ~]# scl enable rh-ruby22 bash
[root@linuxprobe ~]# ruby -v
ruby 2.2.2p95 (2015-04-13 revision 50295) [x86_64-linux]
[root@linuxprobe ~]# which ruby
/opt/rh/rh-ruby22/root/usr/bin/ruby

[root@linuxprobe ~]# vim /etc/profile.d/rh-ruby22.sh
#!/bin/bash
source /opt/rh/rh-ruby22/enable
export X_SCLS="`scl enable rh-ruby22 'echo $X_SCLS'`"
export PATH=$PATH:/opt/rh/rh-ruby22/root/usr/local/bin

# 安装ruby
yum --enablerepo=centos-sclo-rh -y install rh-ruby23

# 加载环境变量
[root@linuxprobe ~]# scl enable rh-ruby23 bash
[root@linuxprobe ~]# ruby -v
ruby 2.2.2p95 (2015-04-13 revision 50295) [x86_64-linux]
[root@linuxprobe ~]# which ruby
/opt/rh/rh-ruby22/root/usr/bin/ruby

[root@linuxprobe ~]# vim /etc/profile.d/rh-ruby23.sh
#!/bin/bash
source /opt/rh/rh-ruby23/enable
export X_SCLS="`scl enable rh-ruby23 'echo $X_SCLS'`"
export PATH=$PATH:/opt/rh/rh-ruby23/root/usr/local/bin

[root@linuxprobe ~]# yum -y install epel-release
# set [priority=5]
[root@linuxprobe ~]# sed -i -e "s/\]$/\]\npriority=5/g" /etc/yum.repos.d/epel.repo
# for another way, change to [enabled=0] and use it only when needed
[root@linuxprobe ~]# sed -i -e "s/enabled=1/enabled=0/g" /etc/yum.repos.d/epel.repo
# if [enabled=0], input a command to use the repository
[root@linuxprobe ~]# yum --enablerepo=epel install [Package]

[root@linuxprobe ~]# yum --enablerepo=epel,centos-sclo-rh -y install rh-ruby22-ruby-devel nodejs libuv gcc make libxml2 libxml2-devel mariadb-devel zlib-devel libxslt-devel

[root@linuxprobe ~]# gem install bundler
[root@linuxprobe ~]# gem install nokogiri -- --use-system-libraries
[root@linuxprobe ~]# gem install rails --version="~>4.0" --no-ri --no-rdoc
[root@linuxprobe ~]# /opt/rh/rh-ruby22/root/usr/local/bin/rails -v
Rails 4.2.8

[root@linuxprobe ~]# yum --enablerepo=epel,centos-sclo-rh -y install rh-ruby23-ruby-devel nodejs libuv gcc make libxml2 libxml2-devel mariadb-devel zlib-devel libxslt-devel

[root@linuxprobe ~]# gem install bundler
[root@linuxprobe ~]# gem install nokogiri -- --use-system-libraries
[root@linuxprobe ~]# gem install rails --no-ri --no-rdoc
[root@linuxprobe ~]# rails -v
Rails 5.0.2

[root@linuxprobe ~]# yum -y install mariadb-server
[root@linuxprobe ~]# vi /etc/my.cnf
# add follows within [mysqld] section
[mysqld]
character-set-server=utf8
[root@linuxprobe ~]# systemctl start mariadb
[root@linuxprobe ~]# systemctl enable mariadb
ln -s '/usr/lib/systemd/system/mariadb.service' '/etc/systemd/system/multi-user.target.wants/mariadb.service'

[root@linuxprobe ~]# mysql_secure_installation

NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MariaDB
  SERVERS IN PRODUCTION USE! PLEASE READ EACH STEP CAREFULLY!

In order to log into MariaDB to secure it, we'll need the current
password for the root user. If you've just installed MariaDB, and
you haven't set the root password yet, the password will be blank,
so you should just press enter here.

Enter current password for root (enter for none):
OK, successfully used password, moving on...

Setting the root password ensures that nobody can log into the MariaDB
root user without the proper authorisation.

# set root password
Set root password"htmlcode">

[root@linuxprobe ~]# gem install mysql2 --no-ri --no-rdoc -- --with-mysql-config=/usr/bin/mysql_config
[root@linuxprobe ~]# rails new SampleApp -d mysql
[root@linuxprobe ~]# cd SampleApp
[root@linuxprobe SampleApp]# vi config/database.yml
default: &default
 adapter: mysql2
 encoding: utf8
 pool: 5
 username: root
 password: password # MariaDB password
 socket: /var/lib/mysql/mysql.sock
# create test application
[root@dlp SampleApp]# rails db:create
Created database 'SampleApp_development'
Created database 'SampleApp_test'
[root@dlp SampleApp]# rails generate scaffold testapp name:string title:string body:text
[root@dlp SampleApp]# rails db:migrate
[root@dlp SampleApp]# rails server --binding=0.0.0.0
=> Booting Puma
=> Rails 5.0.2 application starting in development on http://0.0.0.0:3000
=> Run `rails server -h` for more startup options
Puma starting in single mode...
* Version 3.8.2 (ruby 2.3.1-p112), codename: Sassy Salamander
* Min threads: 5, max threads: 5
* Environment: development
* Listening on tcp://0.0.0.0:3000
Use Ctrl-C to stop 


4、客户端访问http://10.1.1.53:3000/



总结
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