Did some more digging into the diskspace issue. Syslog was many gigabytes because Elasticsearch went into read-only mode because of the disk space issue. The irony. Syslog now gets truncated to 0 once a month.
I also just cleared 40,000 cached preview cards and I'll automate that from now on.
99% full -> 60% full
In case you're wondering what this all looks like...
@daily cd /home/mastodon/live && RAILS_ENV=production /home/mastodon/.rbenv/shims/bundle exec /home/mastodon/live/bin/tootctl preview_cards remove --days=14
A Mastodon server friendly towards anti-fascists, members of the LGBTQ+ community, hackers, and the like.