mirror of https://github.com/kubernetes/kops.git
83 lines
2.5 KiB
Go
83 lines
2.5 KiB
Go
/*
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Copyright 2019 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package instancegroups
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import (
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"k8s.io/apimachinery/pkg/util/intstr"
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"k8s.io/kops/pkg/apis/kops"
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"k8s.io/kops/pkg/featureflag"
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"k8s.io/kops/upup/pkg/fi"
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)
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func resolveSettings(cluster *kops.Cluster, group *kops.InstanceGroup, numInstances int) kops.RollingUpdate {
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rollingUpdate := kops.RollingUpdate{}
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if group.Spec.RollingUpdate != nil {
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rollingUpdate = *group.Spec.RollingUpdate
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}
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if def := cluster.Spec.RollingUpdate; def != nil {
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if rollingUpdate.DrainAndTerminate == nil {
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rollingUpdate.DrainAndTerminate = def.DrainAndTerminate
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}
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if rollingUpdate.MaxUnavailable == nil {
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rollingUpdate.MaxUnavailable = def.MaxUnavailable
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}
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if rollingUpdate.MaxSurge == nil {
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rollingUpdate.MaxSurge = def.MaxSurge
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}
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}
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if rollingUpdate.DrainAndTerminate == nil {
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rollingUpdate.DrainAndTerminate = fi.PtrTo(true)
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}
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if rollingUpdate.MaxSurge == nil {
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val := intstr.FromInt(0)
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if cluster.GetCloudProvider() == kops.CloudProviderAWS && !featureflag.Spotinst.Enabled() && group.Spec.Manager != kops.InstanceManagerKarpenter {
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val = intstr.FromInt(1)
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}
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rollingUpdate.MaxSurge = &val
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}
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if rollingUpdate.MaxSurge.Type == intstr.String {
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surge, _ := intstr.GetScaledValueFromIntOrPercent(rollingUpdate.MaxSurge, numInstances, true)
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surgeInt := intstr.FromInt(surge)
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rollingUpdate.MaxSurge = &surgeInt
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}
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maxUnavailableDefault := intstr.FromInt(0)
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if rollingUpdate.MaxSurge.Type == intstr.Int && rollingUpdate.MaxSurge.IntVal == 0 {
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maxUnavailableDefault = intstr.FromInt(1)
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}
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if rollingUpdate.MaxUnavailable == nil {
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rollingUpdate.MaxUnavailable = &maxUnavailableDefault
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}
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if rollingUpdate.MaxUnavailable.Type == intstr.String {
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unavailable, _ := intstr.GetScaledValueFromIntOrPercent(rollingUpdate.MaxUnavailable, numInstances, false)
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if unavailable <= 0 {
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// While we round down, percentages should resolve to a minimum of 1
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unavailable = 1
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}
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unavailableInt := intstr.FromInt(unavailable)
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rollingUpdate.MaxUnavailable = &unavailableInt
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}
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return rollingUpdate
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}
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