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Merge pull request #6097 from derekwaynecarr/limit_range_default_value 

Limit range supporting a default resource limits value
This commit is contained in:
Prashanth B 2015-04-02 16:04:09 -07:00
parent 58542e4f17 149d7ab358
commit 77a447fa75
1 changed files with 16 additions and 6 deletions
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22
admission_control_limit_range.md
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@ -25,6 +25,8 @@ type LimitRangeItem struct {
Max ResourceList `json:"max,omitempty"` Max ResourceList `json:"max,omitempty"`
// Min usage constraints on this kind by resource name // Min usage constraints on this kind by resource name
Min ResourceList `json:"min,omitempty"` Min ResourceList `json:"min,omitempty"`
// Default usage constraints on this kind by resource name
Default ResourceList `json:"default,omitempty"`
} }
// LimitRangeSpec defines a min/max usage limit for resources that match on kind // LimitRangeSpec defines a min/max usage limit for resources that match on kind
@ -74,6 +76,14 @@ The following min/max limits are imposed:
| cpu | Min/Max amount of cpu per pod | | cpu | Min/Max amount of cpu per pod |
| memory | Min/Max amount of memory per pod | | memory | Min/Max amount of memory per pod |
If a resource specifies a default value, it may get applied on the incoming resource. For example, if a default
value is provided for container cpu, it is set on the incoming container if and only if the incoming container
does not specify a resource requirements limit field.
If a resource specifies a min value, it may get applied on the incoming resource. For example, if a min
value is provided for container cpu, it is set on the incoming container if and only if the incoming container does
not specify a resource requirements requests field.
If the incoming object would cause a violation of the enumerated constraints, the request is denied with a set of If the incoming object would cause a violation of the enumerated constraints, the request is denied with a set of
messages explaining what constraints were the source of the denial. messages explaining what constraints were the source of the denial.
@ -105,12 +115,12 @@ NAME
limits limits
$ kubectl describe limits limits $ kubectl describe limits limits
Name: limits Name: limits
Type Resource Min Max Type Resource Min Max Default
---- -------- --- --- ---- -------- --- --- ---
Pod memory 1Mi 1Gi Pod memory 1Mi 1Gi -
Pod cpu 250m 2 Pod cpu 250m 2 -
Container memory 1Mi 1Gi Container memory 1Mi 1Gi 1Mi
Container cpu 250m 2 Container cpu 250m 250m 250m
``` ```
## Future Enhancements: Define limits for a particular pod or container. ## Future Enhancements: Define limits for a particular pod or container.