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Resolves #59015, extends existing regex to cover t3, r5(d) & z1d instance types

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From current AWS documentation:

https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/volume_limits.html

T3, C5, C5d, M5, M5d, R5, R5d, and z1d instances support a maximum of
28 attachments, and every instance has at least one network interface
attachment. If you have no additional network interface attachments on
these instances, you could attach 27 EBS volumes.
This commit is contained in:
Stephen Cuppett
2018-08-31 09:06:16 -04:00
parent a555044125
commit d85daf0f4c
4 changed files with 68 additions and 15 deletions
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12
pkg/scheduler/algorithm/predicates/predicates.go
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@@ -96,12 +96,6 @@ const (
// CheckNodePIDPressurePred defines the name of predicate CheckNodePIDPressure.
CheckNodePIDPressurePred = "CheckNodePIDPressure"
// DefaultMaxEBSVolumes is the limit for volumes attached to an instance.
// Amazon recommends no more than 40; the system root volume uses at least one.
// See http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/volume_limits.html#linux-specific-volume-limits
DefaultMaxEBSVolumes = 39
// DefaultMaxEBSM5VolumeLimit is default EBS volume limit on m5 and c5 instances
DefaultMaxEBSM5VolumeLimit = 25
// DefaultMaxGCEPDVolumes defines the maximum number of PD Volumes for GCE
// GCE instances can have up to 16 PD volumes attached.
DefaultMaxGCEPDVolumes = 16
@@ -380,10 +374,10 @@ func getMaxVolumeFunc(filterName string) func(node *v1.Node) int {
}
func getMaxEBSVolume(nodeInstanceType string) int {
if ok, _ := regexp.MatchString("^[cm]5.*", nodeInstanceType); ok {
return DefaultMaxEBSM5VolumeLimit
if ok, _ := regexp.MatchString(volumeutil.EBSNitroLimitRegex, nodeInstanceType); ok {
return volumeutil.DefaultMaxEBSNitroVolumeLimit
}
return DefaultMaxEBSVolumes
return volumeutil.DefaultMaxEBSVolumes
}
// getMaxVolLimitFromEnv checks the max PD volumes environment variable, otherwise returning a default value