For version before 23.3.1 run this from self-hosted-sentry directory:

chmod o+w sentry
docker-compose run -v $(pwd)/sentry:/sentry-data/backup  --rm -T -e SENTRY_LOG_LEVEL=CRITICAL web export /sentry-data/backup/backup.json
mv sentry/backup.json /root/sentry-config-backup_$(date +%F).json

The above will only backup users and projects, not historic event data.

• Sentry 22.10.0

• Sentry install

• https://develop.sentry.dev/self-hosted/backup/