redis: fix configuration file for upgrades.

Fixes #15737. Fixes #15671. References #15610.

1 files changed, 6 insertions, 0 deletions

diff --git a/Library/Formula/redis.rb b/Library/Formula/redis.rb
index 746fb2cde..f7e0beaf6 100644
--- a/Library/Formula/redis.rb
+++ b/Library/Formula/redis.rb
@@ -30,6 +30,12 @@ class Redis < Formula
       s.gsub! "\# bind 127.0.0.1", "bind 127.0.0.1"
     end
 
+    # Fix redis upgrade from 2.4 to 2.6.
+    if File.readlines(etc/'redis.conf').grep(/^vm-enabled/)
+      mv etc/'redis.conf', etc/'redis.conf.old'
+      ohai "Your redis.conf will not work with 2.6; moved it to redis.conf.old"
+    end
+
     etc.install 'redis.conf' unless (etc/'redis.conf').exist?
   end