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Merge pull request ManageIQ#1003 from bdunne/node_affinity
Add Node affinity
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,33 @@ | ||
| package miqutils | ||
|
|
||
| import ( | ||
| "context" | ||
| appsv1 "k8s.io/api/apps/v1" | ||
| corev1 "k8s.io/api/core/v1" | ||
| "k8s.io/apimachinery/pkg/types" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
| ) | ||
|
|
||
| func FindPodByName(client client.Client, namespace string, name string) *corev1.Pod { | ||
| podKey := types.NamespacedName{Namespace: namespace, Name: name} | ||
| pod := &corev1.Pod{} | ||
| client.Get(context.TODO(), podKey, pod) | ||
|
|
||
| return pod | ||
| } | ||
|
|
||
| func FindReplicaSetByName(client client.Client, namespace string, name string) *appsv1.ReplicaSet { | ||
| replicaSetKey := types.NamespacedName{Namespace: namespace, Name: name} | ||
| replicaSet := &appsv1.ReplicaSet{} | ||
| client.Get(context.TODO(), replicaSetKey, replicaSet) | ||
|
|
||
| return replicaSet | ||
| } | ||
|
|
||
| func FindDeploymentByName(client client.Client, namespace string, name string) *appsv1.Deployment { | ||
| deploymentKey := types.NamespacedName{Namespace: namespace, Name: name} | ||
| deployment := &appsv1.Deployment{} | ||
| client.Get(context.TODO(), deploymentKey, deployment) | ||
|
|
||
| return deployment | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,61 @@ | ||
| package miqutils | ||
|
|
||
| import ( | ||
| appsv1 "k8s.io/api/apps/v1" | ||
| corev1 "k8s.io/api/core/v1" | ||
| "os" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
| ) | ||
|
|
||
| func OperatorNodeAffinityArchValues(deployment *appsv1.Deployment, client client.Client) []string { | ||
| podName := os.Getenv("POD_NAME") | ||
| pod := FindPodByName(client, deployment.ObjectMeta.Namespace, podName) | ||
| values := []string{"amd64"} | ||
|
|
||
| if pod.Spec.Affinity == nil { | ||
| // In case we don't find the operator pod (local testing) or it doesn't have affinities | ||
| return values | ||
| } | ||
|
|
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| nodeSelectorTerms := pod.Spec.Affinity.NodeAffinity.RequiredDuringSchedulingIgnoredDuringExecution.NodeSelectorTerms | ||
|
|
||
| for _, selector := range nodeSelectorTerms { | ||
| for _, matchExpression := range selector.MatchExpressions { | ||
| if matchExpression.Key == "kubernetes.io/arch" { | ||
| values = matchExpression.Values | ||
| } | ||
| } | ||
| } | ||
|
|
||
| return values | ||
| } | ||
|
|
||
| func SetDeploymentNodeAffinity(deployment *appsv1.Deployment, client client.Client) { | ||
| operatorNodeAffinityArchValues := OperatorNodeAffinityArchValues(deployment, client) | ||
| if len(operatorNodeAffinityArchValues) == 0 { | ||
| // We're running local, can't find the operator pod, or it doesn't have any affinities to use as a template. Skip it. | ||
| return | ||
| } | ||
|
|
||
| matchExpression := corev1.NodeSelectorRequirement{ | ||
| Key: "kubernetes.io/arch", | ||
| Operator: corev1.NodeSelectorOpIn, | ||
| Values: operatorNodeAffinityArchValues, | ||
| } | ||
|
|
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| matchExpressions := []corev1.NodeSelectorRequirement{matchExpression} | ||
|
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| nodeSelectorTerm := corev1.NodeSelectorTerm{ | ||
| MatchExpressions: matchExpressions, | ||
| } | ||
|
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| nodeSelectionTerms := []corev1.NodeSelectorTerm{nodeSelectorTerm} | ||
|
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| deployment.Spec.Template.Spec.Affinity = &corev1.Affinity{ | ||
| NodeAffinity: &corev1.NodeAffinity{ | ||
| RequiredDuringSchedulingIgnoredDuringExecution: &corev1.NodeSelector{ | ||
| NodeSelectorTerms: nodeSelectionTerms, | ||
| }, | ||
| }, | ||
| } | ||
| } |
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