From d321663872badfc1ef91b4214db1876edc697368 Mon Sep 17 00:00:00 2001
From: Madhu Rajanna <madhupr007@gmail.com>
Date: Mon, 26 Jul 2021 17:58:26 +0530
Subject: [PATCH] deploy: add template changes for mapping

added template changes for the clusterID and
poolID,fsID mapping details for the pod templates.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
---
 charts/ceph-csi-rbd/README.md                 |  1 +
 .../templates/csiplugin-configmap.yaml        |  2 ++
 charts/ceph-csi-rbd/values.yaml               | 10 ++++++++
 examples/csi-config-map-sample.yaml           | 25 +++++++++++++++++++
 4 files changed, 38 insertions(+)

diff --git a/charts/ceph-csi-rbd/README.md b/charts/ceph-csi-rbd/README.md
index 246348bfa..9f26025ed 100644
--- a/charts/ceph-csi-rbd/README.md
+++ b/charts/ceph-csi-rbd/README.md
@@ -85,6 +85,7 @@ charts and their default values.
 | `serviceAccounts.provisioner.create`           | Specifies whether a provisioner ServiceAccount should be created                                                                                     | `true`                                             |
 | `serviceAccounts.provisioner.name`             | The name of the provisioner ServiceAccount to use. If not set and create is true, a name is generated using the fullname                             | ""                                                 |
 | `csiConfig`                                    | Configuration for the CSI to connect to the cluster                                                                                                  | []                                                 |
+| `csiMapping`                                   | Configuration details of clusterID,PoolID,FscID mapping                                                                                              | []                                                 |
 | `encryptionKMSConfig`                          | Configuration for the encryption KMS                                                                                                                 | `{}`                                               |
 | `logLevel`                                     | Set logging level for csi containers. Supported values from 0 to 5. 0 for general useful logs, 5 for trace level verbosity.                          | `5`                                                |
 | `nodeplugin.name`                              | Specifies the nodeplugins name                                                                                                                       | `nodeplugin`                                       |
diff --git a/charts/ceph-csi-rbd/templates/csiplugin-configmap.yaml b/charts/ceph-csi-rbd/templates/csiplugin-configmap.yaml
index 67cb22f1a..3cec53e6e 100644
--- a/charts/ceph-csi-rbd/templates/csiplugin-configmap.yaml
+++ b/charts/ceph-csi-rbd/templates/csiplugin-configmap.yaml
@@ -13,4 +13,6 @@ metadata:
 data:
   config.json: |-
 {{ toJson .Values.csiConfig | indent 4 -}}
+  cluster-mapping.json: |-
+{{ toJson .Values.csiMapping | indent 4 -}}
 {{- end }}
diff --git a/charts/ceph-csi-rbd/values.yaml b/charts/ceph-csi-rbd/values.yaml
index 7993927dc..19a6e134f 100644
--- a/charts/ceph-csi-rbd/values.yaml
+++ b/charts/ceph-csi-rbd/values.yaml
@@ -27,6 +27,16 @@ serviceAccounts:
 #       - "<MONValue2>"
 csiConfig: []
 
+# Configuration details of clusterID,PoolID and FscID mapping
+# csiMapping:
+#  - clusterIDMapping:
+#     clusterID on site1: clusterID on site2
+#    RBDPoolIDMapping:
+#    - poolID on site1: poolID on site2
+#    CephFSFscIDMapping:
+#    - CephFS FscID on site1: CephFS FscID on site2
+csiMapping: []
+
 # Configuration for the encryption KMS
 # Ref: https://github.com/ceph/ceph-csi/blob/devel/docs/deploy-rbd.md
 # Example:
diff --git a/examples/csi-config-map-sample.yaml b/examples/csi-config-map-sample.yaml
index 524671c69..806abee2f 100644
--- a/examples/csi-config-map-sample.yaml
+++ b/examples/csi-config-map-sample.yaml
@@ -3,6 +3,7 @@
 # as required by the CSI plugins.
 apiVersion: v1
 kind: ConfigMap
+# Lets see the different configuration under config.json key.
 # The <cluster-id> is used by the CSI plugin to uniquely identify and use a
 # Ceph cluster, the value MUST match the value provided as `clusterID` in the
 # StorageClass
@@ -22,6 +23,14 @@ kind: ConfigMap
 # NOTE: Changes to the configmap is automatically updated in the running pods,
 # thus restarting existing pods using the configmap is NOT required on edits
 # to the configmap.
+
+# Lets see the different configuration under cluster-mapping.json key.
+# This configuration is needed when volumes are mirrored using the Ceph-CSI.
+# clusterIDMapping holds the mapping between two clusterId's of storage
+# clusters.
+# RBDPoolIDMapping holds the mapping between two poolId's of storage clusters.
+# CephFSFscIDMapping holds the mapping between two FscId's of storage
+# clusters.
 data:
   config.json: |-
     [
@@ -39,5 +48,21 @@ data:
         }
       }
     ]
+  cluster-mapping.json: |-
+    [
+      {
+        "clusterIDMapping": {
+          "clusterID on site1": "clusterID on site2"
+        },
+        "RBDPoolIDMapping": [{
+          "poolID on site1": "poolID on site2"
+          ...
+        }],
+        "CephFSFscIDMapping": [{
+          "CephFS FscID on site1": "CephFS FscID on site2"
+          ...
+        }]
+      }
+    ]
 metadata:
   name: ceph-csi-config