On disk format
The data directory is /var/lib/rkt
, unless configured otherwise.
For details, see the paths
kind in configuration documentation.
The --dir
command line option can be used to change this location.
CAS database
The CAS database is stored in /var/lib/rkt/cas/db
.
The database schema can be migrated to newer versions (#706).
CAS
The CAS also uses other directories in /var/lib/rkt/cas/
.
To ensure stability for the CAS, we need to make sure we don't remove any of those directories or make any destructive changes to them.
Future version of rkt will retain compatibility with older CAS versions.
Pods
The pods are stored in /var/lib/rkt/pods/
as explained in Life-cycle of a pod
The stability of prepared and exited pods is desirable, but not as critical as the CAS.
Configuration
The configuration on-disk format is documented separately.