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helm: add option to enable read affinity for CephFS

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This commit adds --enable-read-affinity flag to
enable read affinity for CephFS.

Signed-off-by: Praveen M <m.praveen@ibm.com>
This commit is contained in:
Praveen M 2023-11-17 11:59:54 +05:30 committed by mergify[bot]
parent 4d466843b9
commit 7e26beb51e
6 changed files with 58 additions and 1 deletions
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2
charts/ceph-csi-cephfs/README.md
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@ -164,6 +164,8 @@ charts and their default values.
| `provisioner.podSecurityPolicy.enabled` | Specifies whether podSecurityPolicy is enabled | `false` |
| `provisionerSocketFile` | The filename of the provisioner socket | `csi-provisioner.sock` |
| `pluginSocketFile` | The filename of the plugin socket | `csi.sock` |
| `readAffinity.enabled` | Enable read affinity for CephFS subvolumes. Recommended to set to true if running kernel 5.8 or newer. | `false` |
| `readAffinity.crushLocationLabels` | Define which node labels to use as CRUSH location. This should correspond to the values set in the CRUSH map. For more information, click [here](https://github.com/ceph/ceph-csi/blob/v3.9.0/docs/deploy-rbd.md#read-affinity-using-crush-locations-for-rbd-volumes)| `[]` |
| `kubeletDir` | Kubelet working directory | `/var/lib/kubelet` |
| `driverName` | Name of the csi-driver | `cephfs.csi.ceph.com` |
| `configMapName` | Name of the configmap which contains cluster configuration | `ceph-csi-config` |

19
charts/ceph-csi-cephfs/templates/nodeplugin-clusterrole.yaml Normal file
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@ -0,0 +1,19 @@
{{- if .Values.rbac.create -}}
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: {{ include "ceph-csi-cephfs.nodeplugin.fullname" . }}
labels:
app: {{ include "ceph-csi-cephfs.name" . }}
chart: {{ include "ceph-csi-cephfs.chart" . }}
component: {{ .Values.nodeplugin.name }}
release: {{ .Release.Name }}
heritage: {{ .Release.Service }}
{{- with .Values.commonLabels }}{{ toYaml . | trim | nindent 4 }}{{- end }}
rules:
{{- if and .Values.readAffinity .Values.readAffinity.enabled }}
- apiGroups: [""]
resources: ["nodes"]
verbs: ["get"]
{{- end }}
{{- end -}}

21
charts/ceph-csi-cephfs/templates/nodeplugin-clusterrolebinding.yaml Normal file
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@ -0,0 +1,21 @@
{{- if .Values.rbac.create -}}
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: {{ include "ceph-csi-cephfs.nodeplugin.fullname" . }}
labels:
app: {{ include "ceph-csi-cephfs.name" . }}
chart: {{ include "ceph-csi-cephfs.chart" . }}
component: {{ .Values.nodeplugin.name }}
release: {{ .Release.Name }}
heritage: {{ .Release.Service }}
{{- with .Values.commonLabels }}{{ toYaml . | trim | nindent 4 }}{{- end }}
subjects:
- kind: ServiceAccount
name: {{ include "ceph-csi-cephfs.serviceAccountName.nodeplugin" . }}
namespace: {{ .Release.Namespace }}
roleRef:
kind: ClusterRole
name: {{ include "ceph-csi-cephfs.nodeplugin.fullname" . }}
apiGroup: rbac.authorization.k8s.io
{{- end -}}

4
charts/ceph-csi-cephfs/templates/nodeplugin-daemonset.yaml
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@ -85,6 +85,10 @@ spec:
- "--drivername=$(DRIVER_NAME)"
{{- if .Values.nodeplugin.profiling.enabled }}
- "--enableprofiling={{ .Values.nodeplugin.profiling.enabled }}"
{{- end }}
- "--enable-read-affinity={{ and .Values.readAffinity .Values.readAffinity.enabled }}"
{{- if and .Values.readAffinity .Values.readAffinity.enabled }}
- "--crush-location-labels={{ .Values.readAffinity.crushLocationLabels | join "," }}"
{{- end }}
env:
- name: POD_IP

11
charts/ceph-csi-cephfs/values.yaml
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@ -222,6 +222,17 @@ provisioner:
affinity: {}
# readAffinity:
# Enable read affinity for CephFS subvolumes. Recommended to
# set to true if running kernel 5.8 or newer.
# enabled: false
# Define which node labels to use as CRUSH location.
# This should correspond to the values set in the CRUSH map.
# NOTE: the value here serves as an example
# crushLocationLabels:
# - topology.kubernetes.io/region
# - topology.kubernetes.io/zone
# Mount the host /etc/selinux inside pods to support
# selinux-enabled filesystems
selinuxMount: true

2
scripts/install-helm.sh
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@ -175,7 +175,7 @@ install_cephcsi_helm_charts() {
fi
# install ceph-csi-cephfs and ceph-csi-rbd charts
# shellcheck disable=SC2086
"${HELM}" install --namespace ${NAMESPACE} --set provisioner.fullnameOverride=csi-cephfsplugin-provisioner --set nodeplugin.fullnameOverride=csi-cephfsplugin --set configMapName=ceph-csi-config --set provisioner.replicaCount=1 --set-json='commonLabels={"app.kubernetes.io/name": "ceph-csi-cephfs", "app.kubernetes.io/managed-by": "helm"}' ${SET_SC_TEMPLATE_VALUES} ${CEPHFS_SECRET_TEMPLATE_VALUES} ${CEPHFS_CHART_NAME} "${SCRIPT_DIR}"/../charts/ceph-csi-cephfs
"${HELM}" install --namespace ${NAMESPACE} --set provisioner.fullnameOverride=csi-cephfsplugin-provisioner --set nodeplugin.fullnameOverride=csi-cephfsplugin --set configMapName=ceph-csi-config --set provisioner.replicaCount=1 --set-json='commonLabels={"app.kubernetes.io/name": "ceph-csi-cephfs", "app.kubernetes.io/managed-by": "helm"}' ${SET_SC_TEMPLATE_VALUES} ${CEPHFS_SECRET_TEMPLATE_VALUES} ${CEPHFS_CHART_NAME} "${SCRIPT_DIR}"/../charts/ceph-csi-cephfs --set readAffinity.enabled=true --set readAffinity.crushLocationLabels="{${CRUSH_LOCATION_REGION_LABEL},${CRUSH_LOCATION_ZONE_LABEL}}"
check_deployment_status app=ceph-csi-cephfs "${NAMESPACE}"
check_daemonset_status app=ceph-csi-cephfs "${NAMESPACE}"