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-rw-r--r--config/initializers/1_postgresql_only.rb4
1 files changed, 4 insertions, 0 deletions
diff --git a/config/initializers/1_postgresql_only.rb b/config/initializers/1_postgresql_only.rb
new file mode 100644
index 00000000000..be771bebf47
--- /dev/null
+++ b/config/initializers/1_postgresql_only.rb
@@ -0,0 +1,4 @@
+# frozen_string_literal: true
+
+raise "PostgreSQL is the only supported database from GitLab 12.1" unless
+ Gitlab::Database.postgresql?