Linux CentOS6下安装Ruby和RubyGems和OpenSSL和Zlib-devel 为了Redis 集群

安装Ruby：

到Ruby官网：https://www.ruby-lang.org/en/downloads/

找到最新版本的Ruby

进入linux，选择一个位置存放安装包，我的位置是/opt/soft

[root@localhost soft]# pwd

/opt/soft

输入命令wget + 刚刚复制的安装包URL

[root@localhost soft]# wget https://cache.ruby-lang.org/pub/ruby/2.5/ruby-2.5.0.tar.gz

我安装的是2.2.7，解压缩：

[root@localhost soft]# tar zxf ruby-2.2.7.tar.gz

进入解压缩完成后的文件夹，执行命令：

[root@localhost ruby-2.2.7]# ./configure --prefix=/usr/local/ruby-2.2.7

[root@localhost ruby-2.2.7]# make && make install

[root@localhost ruby-2.2.7]# ln -s /usr/local/ruby-2.2.7 /bin/ruby /usr/bin/ruby

执行ruby -v可查看版本

[root@localhost zlib]# ruby ./extconf.rb 
checking for deflateReset() in -lz... yes
checking for zlib.h... yes
checking for crc32_combine() in zlib.h... yes
checking for adler32_combine() in zlib.h... yes
checking for z_crc_t in zlib.h... no
creating Makefile
[root@localhost zlib]# pwd

/opt/soft/ruby-2.2.7/ext/zlib

[root@localhost zlib]# make
compiling zlib.c
linking shared-object zlib.so
[root@localhost zlib]# make install
/usr/bin/install -c -m 0755 zlib.so /usr/local/ruby-2.2.7/lib/ruby/site_ruby/2.2.0/x86_64-linux
[root@localhost zlib]# 

安装RubyGems:

到官网 https://rubygems.org/pages/download

wget + URL，在线下载安装包：

[root@localhost soft]# wget https://rubygems.org/rubygems/rubygems-2.7.6.tgz

--2018-03-13 05:37:49--  https://rubygems.org/rubygems/rubygems-2.7.6.tgz
Resolving rubygems.org... 151.101.194.2, 151.101.66.2, 151.101.130.2, ...
Connecting to rubygems.org|151.101.194.2|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 852486 (833K) [application/x-tar]
Saving to: ârubygems-2.7.6.tgzâ

100%[======================================>] 852,486     1.86M/s   in 0.4s 

解压缩：

[root@localhost soft]# tar xzf rubygems-2.7.6.tgz 

进入解压后的文件夹，执行命令：

[root@localhost soft]# c