CentOS 7 配置Ruby語言開發(fā)環(huán)境

Ruby環(huán)境

安裝Ruby 2.2

CentOS7存儲庫中的Ruby版本為2.0，但如果需要奔穿，可以使用RPM軟件包安裝2.2

• 添加CentOS SCLo軟件集合存儲庫

[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]

# 安裝ruby

yum --enablerepo=centos-sclo-rh -y install rh-ruby22

• 軟件集合的軟件包安裝在/opt目錄下瘩扼， 要使用它揽浙，需要加載環(huán)境變量镰官，如下所示:

#  加載環(huán)境變量

[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

• 設(shè)置登錄時自動啟用Ruby 2.2，按如下所示進(jìn)行配置：

[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

安裝Ruby 2.3

# 安裝ruby

yum --enablerepo=centos-sclo-rh -y install rh-ruby23

• 軟件集合的軟件包安裝在/opt目錄下崇渗， 要使用它，需要加載環(huán)境變量京郑，如下所示:

#  加載環(huán)境變量

[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

• 設(shè)置登錄時自動啟用Ruby 2.3宅广，按如下所示進(jìn)行配置：

[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

安裝Ruby on Rails 4來構(gòu)建Ruby Framework環(huán)境

• 添加EPEL軟件存儲庫

[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]

Ruby on Rails 4

• 安裝Ruby 2.2，參考上面

• 安裝依賴包（epel+SCLo）

[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

• 安裝Rails 4

[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

Ruby on Rails 5

• 安裝Ruby 2.3些举，參考上面

• 安裝依賴包（epel+SCLo）

[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

• 安裝Rails 5

[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

創(chuàng)建一個示例應(yīng)用程序跟狱，并確保其正常工作

• 需要安裝MariaDB服務(wù)

[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'

• 初始化MariaDB

[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? [Y/n] y

New password:

Re-enter new password:

Password updated successfully!

Reloading privilege tables..

... Success!

By default, a MariaDB installation has an anonymous user, allowing anyone

to log into MariaDB without having to have a user account created for

them.  This is intended only for testing, and to make the installation

go a bit smoother.  You should remove them before moving into a

production environment.

# remove anonymous users

Remove anonymous users? [Y/n] y

... Success!

Normally, root should only be allowed to connect from 'localhost'.  This

ensures that someone cannot guess at the root password from the network.

# disallow root login remotely

Disallow root login remotely? [Y/n] y

... Success!

By default, MariaDB comes with a database named 'test' that anyone can

access.  This is also intended only for testing, and should be removed

before moving into a production environment.

# remove test database

Remove test database and access to it? [Y/n] y

- Dropping test database...

... Success!

- Removing privileges on test database...

... Success!

Reloading the privilege tables will ensure that all changes made so far

will take effect immediately.

# reload privilege tables

Reload privilege tables now? [Y/n] y

... Success!

Cleaning up...

All done!  If you've completed all of the above steps, your MariaDB

installation should now be secure.

Thanks for using MariaDB!

# connect to MariaDB with root

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

Enter password:

Welcome to the MariaDB monitor.  Commands end with ; or \g.

Your MariaDB connection id is 11

Server version: 5.5.52-MariaDB MariaDB Server

Copyright (c) 2000, 2016, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

# show user list

MariaDB [(none)]> select user,host,password from mysql.user;

+------+-----------+-------------------------------------------+

| user | host      | password                                  |

+------+-----------+-------------------------------------------+

| root | localhost | *E2ACEC2F2DA384EE6753673365DFEF35F0C272C9 |

| root | 127.0.0.1 | *E2ACEC2F2DA384EE6753673365DFEF35F0C272C9 |

| root | ::1      | *E2ACEC2F2DA384EE6753673365DFEF35F0C272C9 |

+------+-----------+-------------------------------------------+

3 rows in set (0.00 sec)

# show database list

MariaDB [(none)]> show databases;

+--------------------+

| Database          |

+--------------------+

| information_schema |

| mysql              |

| performance_schema |

+--------------------+

3 rows in set (0.00 sec)

MariaDB [(none)]> exit

Bye

• 創(chuàng)建測試應(yīng)用程序

[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

• 客戶端訪問http://10.1.1.53:3000/

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