leas mastodon recovery notes

README.md

Running db backups and or tootctl commands from chroot environment

Wow my server is completely fucked up right now. All I can do is try to create a backup from the most recent data dir... something with dbus daemon prevents from logging me in and it makes everything slow.

# Create mount bindings
mount --bind /dev /repair/dev
mount --bind /dev/shm /repair/dev/shm
mount --bind /dev/pts /repair/dev/pts
mount --bind /proc /repair/proc
mount --bind /sys /repair/sys
mount --bind /tmp /repair/tmp


# chroot into environment
chroot /repair
export LC_ALL=C

# change config file postgresql, reduce shared_buffers
nano -w /etc/postgresql/15/main/postgresql.conf

# start postgresql and redis
/etc/init.d/postgresql start
/etc/init.d/redis-server start

su - mastodon
# now you should be able to run tootctl commands.

screen-microtut.md

Screen Microtutorial

For long-running processes, it's better to use screen, so you can detach them from the current SSH session:

screen -S backups

Instead of backups you can use an arbitrary name.

In order to detach from a session, press Ctrl + A D. Detaching from a session won't quit the running process. There is also a help via Ctrl + A ?

To list the sessions, there is screen -ls. To reattach to a session, use screen -r.

If there is more than one session, you have to provide a session id number (look up via -ls).