Prometheus was alerting due to my postgres data volume approaching 90% disk usage. I usually set logical volumes to be small, and resize when needed, but before resizing it, I decided to check where all the space was going, and it turns out my #mastodon database was around 12GB, so I ran a VACUUM on it and it dropped to down to 9GB. While not a huge amount, It's a 25% decrease. I'm happy with it. I don't think I need to resize the volume for a while now. :)
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