mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-11-03 23:40:03 +00:00
71 lines
2.7 KiB
Go
71 lines
2.7 KiB
Go
/*
|
|
Copyright 2018 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package util
|
|
|
|
import (
|
|
"crypto/sha1"
|
|
"encoding/hex"
|
|
)
|
|
|
|
// This file is a common place holder for volume limit utility constants
|
|
// shared between volume package and scheduler
|
|
|
|
const (
|
|
// EBSVolumeLimitKey resource name that will store volume limits for EBS
|
|
EBSVolumeLimitKey = "attachable-volumes-aws-ebs"
|
|
// EBSNitroLimitRegex finds nitro instance types with different limit than EBS defaults
|
|
EBSNitroLimitRegex = "^[cmr]5.*|t3|z1d"
|
|
// 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
|
|
// DefaultMaxEBSNitroVolumeLimit is default EBS volume limit on m5 and c5 instances
|
|
DefaultMaxEBSNitroVolumeLimit = 25
|
|
// AzureVolumeLimitKey stores resource name that will store volume limits for Azure
|
|
AzureVolumeLimitKey = "attachable-volumes-azure-disk"
|
|
// GCEVolumeLimitKey stores resource name that will store volume limits for GCE node
|
|
GCEVolumeLimitKey = "attachable-volumes-gce-pd"
|
|
|
|
// CinderVolumeLimitKey contains Volume limit key for Cinder
|
|
CinderVolumeLimitKey = "attachable-volumes-cinder"
|
|
// DefaultMaxCinderVolumes defines the maximum number of PD Volumes for Cinder
|
|
// For Openstack we are keeping this to a high enough value so as depending on backend
|
|
// cluster admins can configure it.
|
|
DefaultMaxCinderVolumes = 256
|
|
|
|
// CSIAttachLimitPrefix defines prefix used for CSI volumes
|
|
CSIAttachLimitPrefix = "attachable-volumes-csi-"
|
|
|
|
// ResourceNameLengthLimit stores maximum allowed Length for a ResourceName
|
|
ResourceNameLengthLimit = 63
|
|
)
|
|
|
|
// GetCSIAttachLimitKey returns limit key used for CSI volumes
|
|
func GetCSIAttachLimitKey(driverName string) string {
|
|
csiPrefixLength := len(CSIAttachLimitPrefix)
|
|
totalkeyLength := csiPrefixLength + len(driverName)
|
|
if totalkeyLength >= ResourceNameLengthLimit {
|
|
charsFromDriverName := driverName[:23]
|
|
hash := sha1.New()
|
|
hash.Write([]byte(driverName))
|
|
hashed := hex.EncodeToString(hash.Sum(nil))
|
|
hashed = hashed[:16]
|
|
return CSIAttachLimitPrefix + charsFromDriverName + hashed
|
|
}
|
|
return CSIAttachLimitPrefix + driverName
|
|
}
|