在執行gem install redis時
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原始碼,再執行還是報錯…最後google結合幾篇文章解決了:
採用rvm來更新ruby:
1.安裝rvm:
gpg2 --keyserver hkp: --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.安裝乙個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 - #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 - #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.使用乙個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
using /usr/local/rvm/gems/ruby-2.3.3
[6].解除安裝乙個已知版本
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
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