ELK and others have been mentioned and are great tools, but if you want a more simple solution within the Sql realm postgresql with table partitions works well

ELK and others have been mentioned and are great tools, but if you want a more simple solution within the Sql realm postgresql with table partitions works well for that particular problem. I agree with many comments that this isn't ideal, but setting up weekly/monthly partitions might buy you plenty of time to think through and implement an alternative solution.