Today I Learned

TIL, 2017-08-22

  • select * from pg_stat_activity where datname = 'mydatabasename'; to view current connections in the Postgres database. Then pkill all connections.
  • Read later: Reference
  • You can’t restore just a single database from a snapshot, you restore an entire snapshot.
  • Problem with reconcile, the where also counts nils (Christ.)
  • shoulda-matchers breaks down when conditionals appear.
  • If you cannot connect to somewhere maybe your Security Group sucks.
  • be cap staging thin:stop to stop Rails first on staging.
  • AWS has a CLI.
  • vim /var/log/auth.log: Shows SSH access attempts.
  • auditd: A kernel level way to track whatever you need to audit.
  • Reversing an array: cool.

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