# Backup restore fails with: undefined method \`config\_filename'

**URL:** https://meta.discourse.org/t/backup-restore-fails-with-undefined-method-config-filename/131767
**Category:** Bug
**Created:** [October 23, 2019, 11:11pm UTC](https://meta.discourse.org/t/backup-restore-fails-with-undefined-method-config-filename/131767 "2019-10-23T23:11:00Z")
**Posts on this page:** 6
**Page:** 1

<div class="post-metadata">

### Author: ![figure002](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/figure002/32/197021_2.png) [@figure002](https://meta.discourse.org/u/figure002)
#### Post date: [October 23, 2019, 11:11pm UTC](https://meta.discourse.org/t/backup-restore-fails-with-undefined-method-config-filename/131767/1 "2019-10-23T23:11:00Z")

</div>

Steps to reproduce:

1. Setup a clean Discourse.
2. Create a backup.
3. Restore the backup.
4. Restore fails with the following error:

> **Summary**
>
> ```plaintext
> [2019-10-23 22:51:31] ALTER TABLE
> [2019-10-23 22:51:31] Migrating the database...
> [2019-10-23 22:51:35] Reconnecting to the database...
> [2019-10-23 22:51:35] EXCEPTION: undefined method `config_filename' for nil:NilClass
> [2019-10-23 22:51:35] /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rails_multisite-2.0.7/lib/rails_multisite/connection_management.rb:38:in `reload'
> /var/www/discourse/lib/backup_restore/restorer.rb:407:in `reconnect_database'
> /var/www/discourse/lib/backup_restore/restorer.rb:86:in `run'
> /var/www/discourse/lib/backup_restore.rb:166:in `block in start!'
> /var/www/discourse/lib/backup_restore.rb:163:in `fork'
> /var/www/discourse/lib/backup_restore.rb:163:in `start!'
> /var/www/discourse/lib/backup_restore.rb:22:in `restore!'
> /var/www/discourse/app/controllers/admin/backups_controller.rb:119:in `restore'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.0/lib/action_controller/metal/basic_implicit_render.rb:6:in `send_action'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.0/lib/abstract_controller/base.rb:196:in `process_action'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.0/lib/action_controller/metal/rendering.rb:30:in `process_action'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.0/lib/abstract_controller/callbacks.rb:42:in `block in process_action'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-6.0.0/lib/active_support/callbacks.rb:135:in `run_callbacks'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.0/lib/abstract_controller/callbacks.rb:41:in `process_action'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.0/lib/action_controller/metal/rescue.rb:22:in `process_action'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.0/lib/action_controller/metal/instrumentation.rb:33:in `block in process_action'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-6.0.0/lib/active_support/notifications.rb:180:in `block in instrument'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-6.0.0/lib/active_support/notifications/instrumenter.rb:24:in `instrument'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-6.0.0/lib/active_support/notifications.rb:180:in `instrument'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.0/lib/action_controller/metal/instrumentation.rb:32:in `process_action'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.0/lib/action_controller/metal/params_wrapper.rb:245:in `process_action'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.0/lib/active_record/railties/controller_runtime.rb:27:in `process_action'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.0/lib/abstract_controller/base.rb:136:in `process'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionview-6.0.0/lib/action_view/rendering.rb:39:in `process'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-mini-profiler-1.1.0/lib/mini_profiler/profiling_methods.rb:104:in `block in profile_method'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.0/lib/action_controller/metal.rb:191:in `dispatch'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.0/lib/action_controller/metal.rb:252:in `dispatch'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.0/lib/action_dispatch/routing/route_set.rb:51:in `dispatch'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.0/lib/action_dispatch/routing/route_set.rb:33:in `serve'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.0/lib/action_dispatch/routing/mapper.rb:18:in `block in <class:Constraints>'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.0/lib/action_dispatch/routing/mapper.rb:48:in `serve'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.0/lib/action_dispatch/journey/router.rb:49:in `block in serve'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.0/lib/action_dispatch/journey/router.rb:32:in `each'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.0/lib/action_dispatch/journey/router.rb:32:in `serve'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.0/lib/action_dispatch/routing/route_set.rb:837:in `call'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-protection-2.0.7/lib/rack/protection/frame_options.rb:31:in `call'
> /var/www/discourse/lib/middleware/omniauth_bypass_middleware.rb:68:in `call'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.0.7/lib/rack/tempfile_reaper.rb:15:in `call'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.0.7/lib/rack/conditional_get.rb:38:in `call'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.0.7/lib/rack/head.rb:12:in `call'
> /var/www/discourse/lib/content_security_policy/middleware.rb:12:in `call'
> /var/www/discourse/lib/middleware/anonymous_cache.rb:274:in `call'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.0.7/lib/rack/session/abstract/id.rb:232:in `context'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.0.7/lib/rack/session/abstract/id.rb:226:in `call'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.0/lib/action_dispatch/middleware/cookies.rb:648:in `call'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.0/lib/action_dispatch/middleware/callbacks.rb:27:in `block in call'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-6.0.0/lib/active_support/callbacks.rb:101:in `run_callbacks'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.0/lib/action_dispatch/middleware/callbacks.rb:26:in `call'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.0/lib/action_dispatch/middleware/actionable_exceptions.rb:17:in `call'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.0/lib/action_dispatch/middleware/debug_exceptions.rb:32:in `call'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.0/lib/action_dispatch/middleware/show_exceptions.rb:33:in `call'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/logster-2.4.1/lib/logster/middleware/reporter.rb:43:in `call'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-6.0.0/lib/rails/rack/logger.rb:38:in `call_app'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-6.0.0/lib/rails/rack/logger.rb:28:in `call'
> /var/www/discourse/config/initializers/100-quiet_logger.rb:18:in `call'
> /var/www/discourse/config/initializers/100-silence_logger.rb:31:in `call'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.0/lib/action_dispatch/middleware/remote_ip.rb:81:in `call'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.0/lib/action_dispatch/middleware/request_id.rb:27:in `call'
> /var/www/discourse/lib/middleware/enforce_hostname.rb:17:in `call'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.0.7/lib/rack/method_override.rb:22:in `call'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.0/lib/action_dispatch/middleware/executor.rb:14:in `call'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.0.7/lib/rack/sendfile.rb:111:in `call'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/actionpack-6.0.0/lib/action_dispatch/middleware/host_authorization.rb:77:in `call'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-mini-profiler-1.1.0/lib/mini_profiler/profiler.rb:296:in `call'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/message_bus-2.2.3/lib/message_bus/rack/middleware.rb:57:in `call'
> /var/www/discourse/lib/middleware/request_tracker.rb:176:in `call'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-6.0.0/lib/rails/engine.rb:526:in `call'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-6.0.0/lib/rails/railtie.rb:190:in `public_send'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/railties-6.0.0/lib/rails/railtie.rb:190:in `method_missing'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.0.7/lib/rack/urlmap.rb:68:in `block in call'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.0.7/lib/rack/urlmap.rb:53:in `each'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-2.0.7/lib/rack/urlmap.rb:53:in `call'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/unicorn-5.5.1/lib/unicorn/http_server.rb:605:in `process_client'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/unicorn-5.5.1/lib/unicorn/http_server.rb:700:in `worker_loop'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/unicorn-5.5.1/lib/unicorn/http_server.rb:548:in `spawn_missing_workers'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/unicorn-5.5.1/lib/unicorn/http_server.rb:144:in `start'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/gems/unicorn-5.5.1/bin/unicorn:128:in `<top (required)>'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/bin/unicorn:23:in `load'
> /var/www/discourse/vendor/bundle/ruby/2.6.0/bin/unicorn:23:in `<main>'
> [2019-10-23 22:51:35] Trying to rollback...
> [2019-10-23 22:51:35] Rolling back...
> [2019-10-23 22:51:36] Cleaning stuff up...
> [2019-10-23 22:51:36] Dropping function from the discourse_functions schema
> [2019-10-23 22:51:36] Removing tmp '/var/www/discourse/tmp/restores/default/2019-10-23-225058' directory...
> [2019-10-23 22:51:36] Unpausing sidekiq...
> [2019-10-23 22:51:36] Disabling readonly mode...
> [2019-10-23 22:51:36] Marking restore as finished...
> [2019-10-23 22:51:36] Notifying 'serrano' of the end of the restore...
> 
> ```

---

<div class="post-metadata">

### Author: ![figure002](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/figure002/32/197021_2.png) [@figure002](https://meta.discourse.org/u/figure002)
#### Post date: [October 23, 2019, 11:18pm UTC](https://meta.discourse.org/t/backup-restore-fails-with-undefined-method-config-filename/131767/2 "2019-10-23T23:18:23Z")

</div>

By the way, this is with current master (commit `87fd7172af8f2848d5118fdebada646c5996821b`).

---

<div class="post-metadata">

### Author: ![codinghorror](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/codinghorror/32/110067_2.png) [@codinghorror](https://meta.discourse.org/u/codinghorror)
#### Post date: [October 24, 2019, 12:01am UTC](https://meta.discourse.org/t/backup-restore-fails-with-undefined-method-config-filename/131767/3 "2019-10-24T00:01:49Z")

</div>

Does this seem legit @sam?

> EXCEPTION: undefined method `config\_filename’

Is that a new field?

---

<div class="post-metadata">

### Author: ![sam](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/sam/32/102149_2.png) [@sam](https://meta.discourse.org/u/sam)
#### Post date: [October 24, 2019, 12:04am UTC](https://meta.discourse.org/t/backup-restore-fails-with-undefined-method-config-filename/131767/4 "2019-10-24T00:04:05Z")

</div>

This is related to some work @kris.kotlarek has done. Kris we should change it so we only do the multisite refresh on multisites.

We can use this to test I think:

> <https://github.com/discourse/discourse/blob/950da348269a4f724b368fd8297131cd43fe41f8/lib/upload_recovery.rb#L139-L139>

---

<div class="post-metadata">

### Author: ![figure002](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/figure002/32/197021_2.png) [@figure002](https://meta.discourse.org/u/figure002)
#### Post date: [October 24, 2019, 7:15am UTC](https://meta.discourse.org/t/backup-restore-fails-with-undefined-method-config-filename/131767/6 "2019-10-24T07:15:45Z")

</div>

It looks like @kris.kotlarek just fixed it:

[https://github.com/discourse/discourse/commit/f530378df336051bdfac7c418eb2c4ab4726c9b2](https://github.com/discourse/discourse/commit/f530378df336051bdfac7c418eb2c4ab4726c9b2)

I just did a `./launcher rebuild app` and tried again, and now the restore was successful.

Thank you all for the exceptionally quick response!

---

<div class="post-metadata">

### Author: ![sam](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/sam/32/102149_2.png) [@sam](https://meta.discourse.org/u/sam)
#### Post date: [October 24, 2019, 10:19am UTC](https://meta.discourse.org/t/backup-restore-fails-with-undefined-method-config-filename/131767/7 "2019-10-24T10:19:34Z")

</div>