Today March 31st (sorry if you’re in the future) is world backup day. There are two types of people in this world. Those who backup, and those who will soon learn they should have.
In general you should backup daily and keep a copy local and one somewhere off-site. So when they say comes that something has gone horribly wrong. You can have minimal downtime. Note this can also help you roll back a change. A feature I put into the backup module when I wrote it to speed development was for the CLI. You can use --backupsingle to backup data from a single module. See the following example.
To backup core for example:
fwconsole backup --backupsingle core --singlesaveto /root/core.tgz
Then you can restore the data with:
fwconsole backup --restoresingle /root/core.tgz
Stay safe my friends