Tweak text saying which version of Ruby to install & add upgrade note

refs #16861

Arvados-DCO-1.1-Signed-off-by: Peter Amstutz <peter.amstutz@curii.com>

diff --git a/doc/_includes/_install_ruby_and_bundler.liquid b/doc/_includes/_install_ruby_and_bundler.liquid
index 9ea8c92cd5ac41fadbdbd4d3a4b91ae992fe2355..d1d33cbbe3e567a610768cbbe790560b2e953d7d 100644 (file)
--- a/doc/_includes/_install_ruby_and_bundler.liquid
+++ b/doc/_includes/_install_ruby_and_bundler.liquid
@@ -18,11 +18,13 @@ Future versions of Arvados may require a newer version of Ruby than is packaged
 
 h3. Centos 7
 
-The Ruby version shipped with Centos 7 is too old.  Use "RVM":#rvm.
+The Ruby version shipped with Centos 7 is too old.  Use "RVM":#rvm to install Ruby 2.5 or later.
 
 h3. Debian and Ubuntu
 
-Debian 9 (stretch) and Ubuntu 16.04 (xenial) ship Ruby 2.3, which is too old to run Arvados.  Use "RVM":#rvm. Later releases have newer versions of Ruby that can also run Arvados.
+Debian 9 (stretch) and Ubuntu 16.04 (xenial) ship Ruby 2.3, which is not supported by Arvados.  Use "RVM":#rvm to install Ruby 2.5 or later.
+
+Debian 10 (buster) and Ubuntu 18.04 (bionic) and later ship with Ruby 2.5, which is supported by Arvados.
 
 <notextile>
 <pre><code># <span class="userinput">apt-get --no-install-recommends install ruby ruby-dev bundler</span></code></pre>

diff --git a/doc/admin/upgrading.html.textile.liquid b/doc/admin/upgrading.html.textile.liquid
index 061b68fa5d27b766e7d45bd0c08750fed210f5dd..c6b415e4f309ff66aed588a760efd2878c73ec72 100644 (file)
--- a/doc/admin/upgrading.html.textile.liquid
+++ b/doc/admin/upgrading.html.textile.liquid
@@ -34,10 +34,14 @@ TODO: extract this information based on git commit messages and generate changel
 <div class="releasenotes">
 </notextile>
 
-h2(#master). development master (as of 2020-06-17)
+h2(#master). development master (as of 2020-09-22)
 
 "Upgrading from 2.0.0":#v2_0_0
 
+h3. Minimum supported Ruby version is now 2.5
+
+The minimum supported Ruby version is now 2.5.  If you are running Arvados on Debian 9 or Ubuntu 16.04, you may need to switch to using RVM or upgrade your OS.  See "Install Ruby and Bundler":../install/ruby.html for more information.
+
 h3. Removing libpam-arvados, replaced with libpam-arvados-go
 
 The Python-based PAM package has been replaced with a version written in Go. See "using PAM for authentication":{{site.baseurl}}/install/setup-login.html#pam for details.