gem install redis報錯解決

在執行gem install redis時

提示:

    gem install redis

    error:  error installing redis:

            redis requires ruby version >= 2.2.2.

查了查資料,centos7 yum庫中ruby的版本支援到 2.0.0,可gem 安裝redis需要最低是2.2.2,自己編譯的ruby源碼,再執行還是報錯…最後google結合幾篇文章解決了:

采用rvm來更新ruby:

1.安裝rvm:

    gpg2 --keyserver hkp://keys.gnupg.net --recv-keys d39dc0e3

    curl -l get.rvm.io | bash -s stable

find / -name rvm -print

/usr/local/rvm

/usr/local/rvm/src/rvm

/usr/local/rvm/src/rvm/bin/rvm

/usr/local/rvm/src/rvm/lib/rvm

/usr/local/rvm/src/rvm/scripts/rvm

/usr/local/rvm/bin/rvm

/usr/local/rvm/lib/rvm

/usr/local/rvm/scripts/rvm

#source /usr/local/rvm/scripts/rvm

2.檢視rvm庫中已知的ruby版本

#rvm list known

mri rubies

[ruby-]1.8.6[-p420]

[ruby-]1.8.7[-head] # security released on head

[ruby-]1.9.1[-p431]

[ruby-]1.9.2[-p330]

[ruby-]1.9.3[-p551]

[ruby-]2.0.0[-p648]

[ruby-]2.1[.10]

[ruby-]2.2[.6]

[ruby-]2.3[.3]

[ruby-]2.4[.0]

ruby-head

….

3.安裝一個ruby版本

#rvm install 2.3.3

no checksum for downloaded archive, recording checksum in user configuration.

ruby-2.3.3 - #extracting rubygems-2.6.12….

ruby-2.3.3 - #removing old rubygems………

ruby-2.3.3 - #installing rubygems-2.6.12…………………….

ruby-2.3.3 - #gemset created /usr/local/rvm/gems/ruby-2.3.3@global

ruby-2.3.3 - #importing gemset /usr/local/rvm/gemsets/global.gems…………..|

ruby-2.3.3 - #generating global wrappers……..

ruby-2.3.3 - #gemset created /usr/local/rvm/gems/ruby-2.3.3

ruby-2.3.3 - #importing gemsetfile /usr/local/rvm/gemsets/default.gems evaluated to empty gem list

ruby-2.3.3 - #generating default wrappers……..

ruby-2.3.3 - #adjusting #shebangs for (gem irb erb ri rdoc testrb rake).

install of ruby-2.3.3 - #complete

ruby was built without documentation, to build it run: rvm docs generate-ri

4.使用一個ruby版本

rvm use 2.3.3

using /usr/local/rvm/gems/ruby-2.3.3

[5].設定預設版本

rvm use 2.3.3 --default

[6].解除安裝一個已知版本

rvm remove 2.0.0

檢視ruby版本:

ruby --version

ruby 2.3.3p222 (2016-11-21 revision 56859) [x86_64-linux]

安裝redis:

gem install redis

fetching: redis-4.0.0.gem (100%)

successfully installed redis-4.0.0

parsing documentation for redis-4.0.0

installing ri documentation for redis-4.0.0

done installing documentation for redis after 1 seconds

1 gem installed