Merge branch 'sh-require-ruby-2.7' into 'master'

Update Rake check and docs to require Ruby 2.7

See merge request gitlab-org/gitlab!48552

changelogs/unreleased/sh-require-ruby-2-7.yml

+---
+title: Update Rake check and docs to require Ruby 2.7
+merge_request: 48552
+author:
+type: changed

doc/install/installation.md

@@ -224,12 +224,6 @@ make
 sudo make install
 ```
 
-Then install the Bundler gem (a version below 2.x):
-
-```shell
-sudo gem install bundler --no-document --version '< 2'
-```
-
 ## 3. Go
 
 In GitLab 8.0 and later, GitLab has several daemons written in Go. To install

doc/install/requirements.md

@@ -45,7 +45,13 @@ Please consider using a virtual machine to run GitLab.
 
 ### Ruby versions
 
-GitLab requires Ruby (MRI) 2.6. Beginning in GitLab 12.2, we no longer support Ruby 2.5 and lower.
+From GitLab 13.6:
+
+- Ruby 2.7 and later is required.
+
+From GitLab 12.2:
+
+- Ruby 2.6 and later is required.
 
 You must use the standard MRI implementation of Ruby.
 We love [JRuby](https://www.jruby.org/) and [Rubinius](https://github.com/rubinius/rubinius#the-rubinius-language-platform), but GitLab

doc/update/upgrading_from_source.md

@@ -61,8 +61,8 @@ sudo service gitlab stop
 
 ### 3. Update Ruby
 
-NOTE: Beginning in GitLab 12.2, we only support Ruby 2.6 or higher, and dropped
-support for Ruby 2.5. Be sure to upgrade if necessary.
+NOTE: Beginning in GitLab 13.6, we only support Ruby 2.7 or higher, and dropped
+support for Ruby 2.6. Be sure to upgrade if necessary.
 
 You can check which version you are running with `ruby -v`.
 
@@ -70,21 +70,15 @@ Download Ruby and compile it:
 
 ```shell
 mkdir /tmp/ruby && cd /tmp/ruby
-curl --remote-name --progress https://cache.ruby-lang.org/pub/ruby/2.6/ruby-2.6.6.tar.gz
-echo '2d78048e293817f38d4ede4ebc7873013e97bb0b  ruby-2.6.6.tar.gz' | shasum -c - && tar xzf ruby-2.6.6.tar.gz
-cd ruby-2.6.6
+curl --remote-name --progress https://cache.ruby-lang.org/pub/ruby/2.7/ruby-2.7.2.tar.gz
+echo 'cb9731a17487e0ad84037490a6baf8bfa31a09e8  ruby-2.7.2.tar.gz' | shasum -c - && tar xzf ruby-2.7.2.tar.gz
+cd ruby-2.7.2
 
 ./configure --disable-install-rdoc
 make
 sudo make install
 ```
 
-Install Bundler:
-
-```shell
-sudo gem install bundler --no-document --version '< 2'
-```
-
 ### 4. Update Node.js
 
 NOTE: To check the minimum required Node.js version, see [Node.js versions](../install/requirements.md#nodejs-versions).

lib/system_check/app/ruby_version_check.rb

@@ -7,7 +7,7 @@ module SystemCheck
       set_check_pass -> { "yes (#{self.current_version})" }
 
       def self.required_version
-        @required_version ||= Gitlab::VersionInfo.new(2, 5, 3)
+        @required_version ||= Gitlab::VersionInfo.new(2, 7, 2)
       end
 
       def self.current_version