I’m struggling with a tricky data transfer setup. Here’s the situation:
Server A1 (MySQL):
Handles data entry and processing
Has tight security
Creates MySQL dumps and sends them to a backup server
No external connections allowed
Server B1 (PostgreSQL):
A new server that needs data from A1
Goal: Automate the process of unpacking MySQL backups into PostgreSQL
I’ve manually converted dumps to CSV with DBeaver, then uploaded to Postgres after adjusting dates and table structures. This method works, but I want to automate it.
Constraints:
Must work only with existing MySQL dumps
Available tools: Terminal and Python 3.8
Has anyone faced a similar issue? I’m seeking practical ideas or scripts to streamline this automation.
I’ve dealt with similar migration challenges before, and here’s what worked for me. Instead of relying on third-party tools, I wrote a custom Python script that handles the entire process. It reads the MySQL dump, parses the SQL statements, and converts them to PostgreSQL-compatible format. The script also takes care of data type conversions and handles any specific quirks between the two databases.
The advantage of this approach is that you have full control over the migration process. You can add error handling, logging, and even implement incremental updates if needed. It takes some initial effort to set up, but once done, it’s fully automated and can be scheduled to run periodically.
One tip: pay special attention to handling NULL values and date formats, as these often cause issues during migrations. Also, consider implementing a dry-run mode to verify the conversion before actually writing to PostgreSQL. This saved me a lot of headaches during testing.
hey danielr, that’s a tricky setup! have u considered using pgloader? it can handle mysql dumps directly and load em into postgres. might need some tweaking for ur specific scenario, but could save u lots of manual work. just make sure to test thoroughly before going live!
Your situation presents an interesting challenge. I’ve encountered similar scenarios in my work. One approach that might be worth exploring is using a combination of mysqldbdump and pg_restore. First, you could use mysqldbdump to convert the MySQL dumps into a format compatible with PostgreSQL. Then, utilize pg_restore to import the data into your PostgreSQL server. This method requires some initial setup, but once configured, it can be automated with a simple shell script. Remember to account for any data type discrepancies between MySQL and PostgreSQL. Also, consider implementing error handling and logging to ensure smooth operation and easy troubleshooting.