Operations grimoire/Mastodon

Logs

Web

docker logs --tail=100 --follow mastodon_web_1 | grep -v status=20 | grep -v Render | grep -v X-Accel-Mapping

Other containers

docker logs --tail=100 --follow mastodon_db_1

docker logs --tail=100 --follow mastodon_sidekiq_1

docker logs --tail=100 --follow mastodon_streaming_1

docker logs --tail=100 --follow mastodon_redis_1

Upgrade procedure

Backup

PostgreSQL

docker exec mastodon_db_1 pg_dump -Fc -U postgres postgres > mastodon-db-`date +%Y-%m-%d`.dump

Redis

Copy the rdb with cp /srv/data/mastodon/redis/dump.rdb dump.rdb.`date +%Y-%m-%d`

Build image

$ cd /opt/mastodon
$ git fetch
$ git rebase origin/master # or a version tag
$ docker-compose build

Deploy new containers

$ docker-compose run --rm web rails db:migrate
$ docker-compose up -d

Sometimes, the database migration is time consuming. In such case:

$ docker-compose run --rm -e SKIP_POST_DEPLOYMENT_MIGRATIONS=true web rails db:migrate
$ docker-compose up -d
$ docker-compose run --rm web rails db:migrate