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Defect #42013
closed
Redmine fails to start with error: Unknown database adapter `"mysql2"` found in config/database.yml
Start date:
Due date:
% Done:
0%
Estimated time:
Resolution:
Fixed
Affected version:
Description
I use Docker. I testet this with "redmine" and "redmine:5". Testet with 6.0.2 and an 5.1.5.
With 5.1.4 it works
Unknown database adapter `"mysql2"` found in config/database.yml, use Gemfile.local to load your own database gems
pm1.de1.dbe.academy | Your Gemfile lists the gem puma (>= 0) more than once.
pm1.de1.dbe.academy | You should probably keep only one of them.
pm1.de1.dbe.academy | Remove any duplicate entries and specify the gem only once.
pm1.de1.dbe.academy | While it's not a problem now, it could cause errors if you change the version of one of them later.
pm1.de1.dbe.academy | The Gemfile's dependencies are satisfied
pm1.de1.dbe.academy | Unknown database adapter `"mysql2"` found in config/database.yml, use Gemfile.local to load your own database gems
pm1.de1.dbe.academy | rake aborted!
pm1.de1.dbe.academy | LoadError: Error loading the 'mysql2' Active Record adapter. Missing a gem it depends on? mysql2 is not part of the bundle. Add it to your Gemfile. (LoadError)
Related issues
Updated by Daniel Drexlmaier about 22 hours ago
Updated by Daniel Drexlmaier about 22 hours ago
Updated by Anton Derevyagin about 22 hours ago
Same here, workaround helped.
Daniel, thank you for the issue and links!
Updated by Go MAEDA about 13 hours ago
- Category changed from Database to Gems support
- Target version set to 5.1.6
The following patch fixes the issue.
I am setting the target version to 5.1.6.
diff --git a/Gemfile b/Gemfile
index 2f075c6c3..478084c20 100644
--- a/Gemfile
+++ b/Gemfile
@@ -67,11 +67,11 @@ if File.exist?(database_file)
adapters = database_config.scan(/^ *adapter: *(.*)/).flatten.uniq
if adapters.any?
adapters.each do |adapter|
case adapter.strip
- when 'mysql2'
+ when /mysql2/
gem 'mysql2', '~> 0.5.0'
gem "with_advisory_lock"
when /postgresql/
gem 'pg', '~> 1.5.3'
when /sqlite3/
Updated by Go MAEDA about 13 hours ago
- Related to Defect #41749: Warning during startup: "Unresolved or ambiguous specs during Gem::Specification.reset" added
Updated by Katsuya HIDAKA about 12 hours ago
I tested the patch from #note-4 on Redmine using docker-library/redmine and confirmed it works as expected. The patch in #note-4 seems to resolve the issue.
Specifically, I built the Docker image locally by modifying the Dockerfile in docker-library/redmine to target this branch and confirmed it works using the official compose.yml example.
Updated by Go MAEDA about 12 hours ago
- Subject changed from Unknown database adapter `"mysql2"` found in config/database.yml to Redmine fails to start with error: Unknown database adapter `"mysql2"` found in config/database.yml
- Status changed from New to Resolved
- Assignee set to Go MAEDA
- Resolution set to Fixed
Committed the fix in r23408. Thank you for reporting this issue.
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