Dealing with disk_full mode in a Database Instance
Whenever your Database Instance volume is close to reaching full capacity, your Database Instance switches to disk_full mode.
The Database Instance switches to disk_full mode when the amount of free space in the volume falls under 2% of the total volume size.
For Database Instances where 2% of the volume size is more than 2 GB, this threshold is 2 GB.
When the Database Instance switches to disk_full state, the default transaction mode automatically switches to read only. This allows your applications to still access its data, while preventing new data from being added.
This state allows you to increase your volume or upgrade your node type. You are also able to clear some space in your volume to increase your capacity.
Failing to clear out some of your data, or forcing insertions while the database is in disk_full mode leads to downtime