Merge branch 'unstable' of github.com:status-im/nim-beacon-chain into unstable

docs/the_nimbus_book/src/SUMMARY.md

@@ -36,6 +36,7 @@
 - [Setup a systemd service](./beacon-node-systemd.md)
 - [Setup log rotation](./log-rotate.md)
 - [Verify the integrity of Nimbus](./checksums.md)
+- [Back up your database](./database-backup.md)
 
 # Tutorials
 - [Grafana and Prometheus](./metrics-pretty-pictures.md)

docs/the_nimbus_book/src/database-backup.md

@@ -0,0 +1,5 @@
+# Back up your database
+
+The best way to do this is to simply copy it over: you'll find it either in `build/data/shared_mainnet_0/db/` (if you're running Pyrmont, `shared_pyrmont_0`) or the directory you supplied to the `--data-dir`  argument when you launched Nimbus).
+
+