kubernetes
/
website
mirror of https://github.com/kubernetes/website.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

make admission controller bit clearer

This commit is contained in:
Matthew Wong 2016-08-23 00:19:02 -04:00
parent 12c3921fc9
commit edbac93ea8
1 changed files with 8 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
docs/user-guide/persistent-volumes/index.md
View File

@ -150,7 +150,7 @@ In the CLI, the access modes are abbreviated to:
### Class
A PV can have a class, which is specified by setting the
"volume.beta.kubernetes.io/storage-class" annotation to the name of a
`volume.beta.kubernetes.io/storage-class` annotation to the name of a
`StorageClass`. A PV of a particular class can only be bound to PVCs requesting
that class. A PV with no annotation or its class annotation set to `""` has no
class and can only be bound to PVCs that request no particular class.
@ -235,15 +235,15 @@ is turned on.
* If the admission controller is turned on, the administrator may specify a
default `StorageClass`. All PVCs that don't request a `StorageClass` can be
bound only to PVs of that default. This means that the PVs those PVCs would
normally be bound to, the PVs that have no class (no annotation or annotation
equal to `""`), cannot be bound to any PVC. Specifying a default `StorageClass`
is done by setting the annotation
bound only to PVs of that default. A consequence of this is that the PVs those
PVCs would normally be bound to, the PVs that have no class (no annotation or annotation
equal to `""`), are unable to be bound to any PVC. Specifying a default
`StorageClass` is done by setting the annotation
`storageclass.beta.kubernetes.io/is-default-class` equal to "true" in a
`StorageClass` object. If the administrator does not specify a default, the
cluster will respond to PVC creation as if the admission controller were turned
off. If more than one default is specified, the admission controller will forbid
the creation of all PVCs.
cluster responds to PVC creation as if the admission controller were turned off.
If more than one default is specified, the admission controller forbids the
creation of all PVCs.
* If the admission controller is turned off, there is no notion of a default
`StorageClass`. All PVCs that don't request a `StorageClass` can be bound only
to PVs that have no class.