State, due to a bug Kubernetes lost the state of a persistent volume. The volume existed in AWS, so I've decided to recover the state.
PVC existed but with state Lost:
kubectl -n acdc-legacy get pvc
NAME STATUS VOLUME CAPACITY ACCESSMODES STORAGECLASS AGE
acdclegacy-staging-data-acdclegacy-postgres-0 Lost pvc-dbd2ac08-f32e-11e7-b70d-1212ccc85de2 0 default 10d