Make csi driver configurable to be able to run multiple instances (#115)

Co-authored-by: Marco Franssen <[email protected]>

charts/spire/charts/spiffe-csi-driver/README.md

@@ -14,6 +14,7 @@ A Helm chart to install the SPIFFE CSI driver.
 | Key | Type | Default | Description |
 |-----|------|---------|-------------|
 | fullnameOverride | string | `""` |  |
+| healthChecks.port | int | `9809` |  |
 | image.pullPolicy | string | `"IfNotPresent"` |  |
 | image.registry | string | `"ghcr.io"` |  |
 | image.repository | string | `"spiffe/spiffe-csi-driver"` |  |
@@ -27,6 +28,7 @@ A Helm chart to install the SPIFFE CSI driver.
 | nodeDriverRegistrar.image.version | string | `"v2.6.2"` |  |
 | nodeDriverRegistrar.resources | object | `{}` |  |
 | nodeSelector | object | `{}` |  |
+| pluginName | string | `"csi.spiffe.io"` | Set the csi driver name deployed to Kubernetes. |
 | podAnnotations | object | `{}` |  |
 | podSecurityContext | object | `{}` |  |
 | priorityClassName | string | `""` | Priority class assigned to daemonset pods |

charts/spire/charts/spiffe-csi-driver/templates/daemonset.yaml

@@ -35,6 +35,7 @@ spec:
           imagePullPolicy: {{ .Values.image.pullPolicy }}
           args: [
             "-workload-api-socket-dir", "/spire-agent-socket",
+            "-plugin-name", "{{ .Values.pluginName }}",
             "-csi-socket-path", "/spiffe-csi/csi.sock",
           ]
           env:
@@ -74,8 +75,8 @@ spec:
           imagePullPolicy: {{ .Values.nodeDriverRegistrar.image.pullPolicy }}
           args: [
             "-csi-address", "/spiffe-csi/csi.sock",
-            "-kubelet-registration-path", "/var/lib/kubelet/plugins/csi.spiffe.io/csi.sock",
-            "-health-port", "9809"
+            "-kubelet-registration-path", "/var/lib/kubelet/plugins/{{ .Values.pluginName }}/csi.sock",
+            "-health-port", "{{ .Values.healthChecks.port }}"
           ]
           volumeMounts:
             # The registrar needs access to the SPIFFE CSI driver socket
@@ -86,7 +87,7 @@ spec:
             - name: kubelet-plugin-registration-dir
               mountPath: /registration
           ports:
-            - containerPort: 9809
+            - containerPort: {{ .Values.healthChecks.port }}
               name: healthz
           livenessProbe:
             httpGet:
@@ -104,7 +105,7 @@ spec:
         # This volume is where the socket for kubelet->driver communication lives
         - name: spiffe-csi-socket-dir
           hostPath:
-            path: /var/lib/kubelet/plugins/csi.spiffe.io
+            path: /var/lib/kubelet/plugins/{{ .Values.pluginName }}
             type: DirectoryOrCreate
         # This volume is where the SPIFFE CSI driver mounts volumes
         - name: mountpoint-dir

charts/spire/charts/spiffe-csi-driver/templates/spiffe-csi-driver.yaml

@@ -1,7 +1,7 @@
 apiVersion: storage.k8s.io/v1
 kind: CSIDriver
 metadata:
-  name: "csi.spiffe.io"
+  name: {{ .Values.pluginName | quote }}
 spec:
   # Only ephemeral, inline volumes are supported. There is no need for a
   # controller to provision and attach volumes.

charts/spire/charts/spiffe-csi-driver/values.yaml

@@ -1,3 +1,6 @@
+# -- Set the csi driver name deployed to Kubernetes.
+pluginName: csi.spiffe.io
+
 image:
   registry: ghcr.io
   repository: spiffe/spiffe-csi-driver
@@ -15,6 +18,9 @@ resources: {}
   #   cpu: 100m
   #   memory: 64Mi
 
+healthChecks:
+  port: 9809
+
 imagePullSecrets: []
 nameOverride: ""
 namespaceOverride: ""