Hey folks,
I’m having trouble with my n8n setup. I moved my 1.51.2 installation to a cloud SQL database and GCP Cloud Run. The data transfer went fine, but now I’m stuck.
When I try to start n8n, it keeps trying to create a migrations table that’s already there. Here’s what I’m seeing:
Error: There was an error running database migrations
QueryFailedError: relation "migrations" already exists
I thought it would just start up normally without trying to do migrations. Anyone know why this is happening? When does n8n usually try to run migrations?
I’d really appreciate some help figuring this out. Thanks!
I’ve dealt with similar migration hiccups before, and it can be quite frustrating. One thing that’s worked for me is to double-check the database user permissions. Sometimes, the issue isn’t with the migrations themselves, but with the user account not having sufficient privileges to create or modify tables.
Try connecting to your Cloud SQL instance and verifying that the user n8n is using has all the necessary permissions. You might need to grant additional privileges like CREATE, ALTER, and DROP on the database.
Also, inspect the migrations table content if you can. Sometimes, there might be incomplete or corrupted entries causing the system to behave unexpectedly. If you find any suspicious entries, carefully removing them (after backing up, of course) could potentially resolve the issue.
If all else fails, you might want to consider a clean install of n8n on your new setup, then manually importing your workflows and credentials. It’s a bit more work, but sometimes it’s the cleanest solution to migration troubles.
hey alex, sounds like a tricky situation. have you tried clearing the migrations table before starting n8n? sometimes that helps when the system gets confused about what’s already migrated. also, double-check your connection string to make sure it’s pointing to the right database. good luck!
I encountered a similar issue during a database migration. The problem often stems from inconsistencies between the migrations table and the actual database schema. To resolve this, I’d suggest the following:
First, verify that all tables from your previous installation were correctly transferred to the new database. Sometimes, partial transfers can cause these conflicts.
If that checks out, try manually dropping the migrations table in your new database. This will force n8n to recreate it and re-run necessary migrations. Be cautious with this approach and ensure you have a backup.
Lastly, check your n8n configuration. Ensure the database settings are correct and that you’re not accidentally connecting to a different instance.
If these steps don’t work, you might need to compare your schema with a fresh n8n installation to identify discrepancies.