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ceph: reduce the number of provisioner pods in small K8s cluster #6437

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merged 1 commit into from Oct 15, 2020
Merged

ceph: reduce the number of provisioner pods in small K8s cluster #6437

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2 changes: 1 addition & 1 deletion cluster/examples/kubernetes/ceph/csi/template/cephfs/csi-cephfsplugin-provisioner-dep.yaml
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Expand Up @@ -4,7 +4,7 @@ metadata:
name: csi-cephfsplugin-provisioner
namespace: {{ .Namespace }}
spec:
replicas: 2
replicas: {{ .ProvisionerReplicas }}
selector:
matchLabels:
app: csi-cephfsplugin-provisioner
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2 changes: 1 addition & 1 deletion cluster/examples/kubernetes/ceph/csi/template/rbd/csi-rbdplugin-provisioner-dep.yaml
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Expand Up @@ -4,7 +4,7 @@ metadata:
name: csi-rbdplugin-provisioner
namespace: {{ .Namespace }}
spec:
replicas: 2
replicas: {{ .ProvisionerReplicas }}
selector:
matchLabels:
app: csi-rbdplugin-provisioner
Expand Down
11 changes: 11 additions & 0 deletions pkg/operator/ceph/csi/spec.go
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Expand Up @@ -57,6 +57,7 @@ type Param struct {
CephFSLivenessMetricsPort uint16
RBDGRPCMetricsPort uint16
RBDLivenessMetricsPort uint16
ProvisionerReplicas uint8
}

type templateParam struct {
Expand Down Expand Up @@ -315,6 +316,16 @@ func startDrivers(clientset kubernetes.Interface, rookclientset rookclient.Inter
}
}

tp.ProvisionerReplicas = 2
nodes, err := clientset.CoreV1().Nodes().List(metav1.ListOptions{})
if err == nil {
if len(nodes.Items) == 1 {
tp.ProvisionerReplicas = 1
}
} else {
logger.Errorf("failed to get nodes. Defaulting the number of replicas of provisioner pods to 2. %v", err)
}

if EnableRBD {
rbdPlugin, err = templateToDaemonSet("rbdplugin", RBDPluginTemplatePath, tp)
if err != nil {
Expand Down