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Add node affinity support (#1166)

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* Adding nodeaffinity support alongside node_readiness_label
* add documentation for node affinity
* add node affinity e2e test
* add unit test for node affinity

Co-authored-by: Steffen Pøhner Henriksen <str3sses@gmail.com>
Co-authored-by: Adrian Astley <adrian.astley@activision.com>
This commit is contained in:
Pavel Tumik
2020-12-16 14:56:28 +01:00
committed by GitHub
co-authored by Steffen Pøhner Henriksen Adrian Astley
parent f28706e940
commit 77252e316c
10 changed files with 505 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files
pkg/cluster/k8sres.go
+30 -16
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@@ -320,25 +320,39 @@ func getLocalAndBoostrapPostgreSQLParameters(parameters map[string]string) (loca
return
}
func nodeAffinity(nodeReadinessLabel map[string]string) *v1.Affinity {
matchExpressions := make([]v1.NodeSelectorRequirement, 0)
if len(nodeReadinessLabel) == 0 {
func nodeAffinity(nodeReadinessLabel map[string]string, nodeAffinity *v1.NodeAffinity) *v1.Affinity {
if len(nodeReadinessLabel) == 0 && nodeAffinity == nil {
return nil
}
for k, v := range nodeReadinessLabel {
matchExpressions = append(matchExpressions, v1.NodeSelectorRequirement{
Key: k,
Operator: v1.NodeSelectorOpIn,
Values: []string{v},
})
nodeAffinityCopy := *&v1.NodeAffinity{}
if nodeAffinity != nil {
nodeAffinityCopy = *nodeAffinity.DeepCopy()
}
if len(nodeReadinessLabel) > 0 {
matchExpressions := make([]v1.NodeSelectorRequirement, 0)
for k, v := range nodeReadinessLabel {
matchExpressions = append(matchExpressions, v1.NodeSelectorRequirement{
Key: k,
Operator: v1.NodeSelectorOpIn,
Values: []string{v},
})
}
nodeReadinessSelectorTerm := v1.NodeSelectorTerm{MatchExpressions: matchExpressions}
if nodeAffinityCopy.RequiredDuringSchedulingIgnoredDuringExecution == nil {
nodeAffinityCopy.RequiredDuringSchedulingIgnoredDuringExecution = &v1.NodeSelector{
NodeSelectorTerms: []v1.NodeSelectorTerm{
nodeReadinessSelectorTerm,
},
}
} else {
nodeAffinityCopy.RequiredDuringSchedulingIgnoredDuringExecution = &v1.NodeSelector{
NodeSelectorTerms: append(nodeAffinityCopy.RequiredDuringSchedulingIgnoredDuringExecution.NodeSelectorTerms, nodeReadinessSelectorTerm),
}
}
}
return &v1.Affinity{
NodeAffinity: &v1.NodeAffinity{
RequiredDuringSchedulingIgnoredDuringExecution: &v1.NodeSelector{
NodeSelectorTerms: []v1.NodeSelectorTerm{{MatchExpressions: matchExpressions}},
},
},
NodeAffinity: &nodeAffinityCopy,
}
}
@@ -1209,7 +1223,7 @@ func (c *Cluster) generateStatefulSet(spec *acidv1.PostgresSpec) (*appsv1.Statef
effectiveRunAsUser,
effectiveRunAsGroup,
effectiveFSGroup,
nodeAffinity(c.OpConfig.NodeReadinessLabel),
nodeAffinity(c.OpConfig.NodeReadinessLabel, &spec.NodeAffinity),
spec.SchedulerName,
int64(c.OpConfig.PodTerminateGracePeriod.Seconds()),
c.OpConfig.PodServiceAccountName,
@@ -1914,7 +1928,7 @@ func (c *Cluster) generateLogicalBackupJob() (*batchv1beta1.CronJob, error) {
nil,
nil,
nil,
nodeAffinity(c.OpConfig.NodeReadinessLabel),
nodeAffinity(c.OpConfig.NodeReadinessLabel, nil),
nil,
int64(c.OpConfig.PodTerminateGracePeriod.Seconds()),
c.OpConfig.PodServiceAccountName,