From bc78e84d0814c8fbac48565946a77af980324bf2 Mon Sep 17 00:00:00 2001
From: Caio Correa <caio.correa@windriver.com>
Date: Tue, 5 Mar 2024 19:10:55 -0300
Subject: [PATCH] Added chart for duplex preparation

This patch adds a pre-install rook that edits the entrypoint to 
rook-ceph-mon. On a duplex this entrypoint should be the floating IP 
to acomplish the roaming mon strategy.

Signed-off-by: Caio Correa <caio.correa@windriver.com>
---
 .../pre-install-duplex-preparation.yaml       | 82 +++++++++++++++++++
 cluster/charts/rook-ceph-cluster/values.yaml  | 18 ++++
 2 files changed, 100 insertions(+)
 create mode 100644 cluster/charts/rook-ceph-cluster/templates/pre-install-duplex-preparation.yaml

diff --git a/cluster/charts/rook-ceph-cluster/templates/pre-install-duplex-preparation.yaml b/cluster/charts/rook-ceph-cluster/templates/pre-install-duplex-preparation.yaml
new file mode 100644
index 000000000..61e64c87b
--- /dev/null
+++ b/cluster/charts/rook-ceph-cluster/templates/pre-install-duplex-preparation.yaml
@@ -0,0 +1,82 @@
+{{/*
+#
+# Copyright (c) 2020 Intel Corporation, Inc.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+*/}}
+
+{{- if .Values.hook.duplexPreparation.enable }}
+{{ $root := . }}
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: config-rook-ceph-duplex-preparation
+  namespace: {{ $root.Release.Namespace }}
+  annotations:
+    "helm.sh/hook": "pre-install"
+    "helm.sh/hook-delete-policy": "before-hook-creation,hook-succeeded"
+data:
+  rook_duplex_preparation.sh: |-
+    #!/bin/bash
+
+    cat >  endpoint.yaml << EOF
+    apiVersion: v1
+    kind: ConfigMap
+    metadata:
+      name: rook-ceph-mon-endpoints
+      namespace: $NAMESPACE
+    data:
+      data: a=$FLOAT_IP:6789
+      mapping: '{"node":{"a":{"Name":"$ACTIVE_CONTROLLER","Hostname":"$ACTIVE_CONTROLLER","Address":"$FLOAT_IP"}}}'
+      maxMonId: "0"
+    EOF
+
+    kubectl apply -f endpoint.yaml
+
+    rm -f endpoint.yaml
+---
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: rook-ceph-duplex-preparation
+  namespace: {{ $root.Release.Namespace }}
+  labels:
+    heritage: {{$root.Release.Service | quote }}
+    release: {{$root.Release.Name | quote }}
+    chart: "{{$root.Chart.Name}}-{{$root.Chart.Version}}"
+  annotations:
+    "helm.sh/hook": "pre-install"
+    "helm.sh/hook-delete-policy": "before-hook-creation,hook-succeeded"
+spec:
+  template:
+    metadata:
+      name: rook-ceph-duplex-preparation
+      namespace: {{ $root.Release.Namespace }}
+      labels:
+        heritage: {{$root.Release.Service | quote }}
+        release: {{$root.Release.Name | quote }}
+        chart: "{{$root.Chart.Name}}-{{$root.Chart.Version}}"
+    spec:
+      serviceAccountName: rook-ceph-system
+      restartPolicy: OnFailure
+      volumes:
+        - name: config-rook-ceph-duplex-preparation
+          configMap:
+            name: config-rook-ceph-duplex-preparation
+      containers:
+        - name: duplex-preparation
+          image: {{ .Values.hook.image }}
+          command: [ "/bin/bash", "/tmp/mount/rook_duplex_preparation.sh" ]
+          env:
+            - name: NAMESPACE
+              value: {{ $root.Release.Namespace }}
+            - name: ACTIVE_CONTROLLER
+              value: {{ $root.Values.hook.duplexPreparation.activeController }}
+            - name: FLOAT_IP
+              value: {{ $root.Values.hook.duplexPreparation.floatIP }}
+          volumeMounts:
+            - name: config-rook-ceph-duplex-preparation
+              mountPath: /tmp/mount
+{{- end }}
diff --git a/cluster/charts/rook-ceph-cluster/values.yaml b/cluster/charts/rook-ceph-cluster/values.yaml
index ca29c52f7..9194cbac8 100644
--- a/cluster/charts/rook-ceph-cluster/values.yaml
+++ b/cluster/charts/rook-ceph-cluster/values.yaml
@@ -424,3 +424,21 @@ cephObjectStores:
       parameters:
         # note: objectStoreNamespace and objectStoreName are configured by the chart
         region: us-east-1
+
+hook:
+  image: docker.io/openstackhelm/ceph-config-helper:ubuntu_bionic-20220802
+  duplexPreparation:
+    enable: false
+    activeController: controller-0
+    floatIP: 192.188.204.1
+  cleanup:
+    enable: true
+    cluster_cleanup: rook-ceph
+    rbac:
+      clusterRole: rook-ceph-cleanup
+      clusterRoleBinding: rook-ceph-cleanup
+      role: rook-ceph-cleanup
+      roleBinding: rook-ceph-cleanup
+      serviceAccount: rook-ceph-cleanup
+    mon_hosts:
+    - controller-0
\ No newline at end of file
-- 
2.34.1