From 3d39bd986e274e543e037a88d42469b9bd4bd392 Mon Sep 17 00:00:00 2001
From: Mustafa Elbehery <melbeher@redhat.com>
Date: Sun, 30 Jun 2024 16:16:51 +0200
Subject: [PATCH] ETCD-636: add automated backup side car

---
 bindata/etcd/pod.yaml               | 32 +++++++++++++++++++++++++++++
 pkg/operator/etcd_assets/bindata.go | 32 +++++++++++++++++++++++++++++
 2 files changed, 64 insertions(+)

diff --git a/bindata/etcd/pod.yaml b/bindata/etcd/pod.yaml
index 1b94d519f6..8af892ab37 100644
--- a/bindata/etcd/pod.yaml
+++ b/bindata/etcd/pod.yaml
@@ -129,6 +129,34 @@ ${COMPUTED_ENV_VARS}
 ${COMPUTED_ENV_VARS}
       - name: "ETCD_STATIC_POD_VERSION"
         value: "REVISION"
+  # The etcdbackup container copies snapshots from etcd data dir into backup volume.
+  - name: etcdbackup
+    image: ${IMAGE}
+    imagePullPolicy: IfNotPresent
+    terminationMessagePolicy: FallbackToLogsOnError
+    command:
+      - /bin/sh
+      - -c
+      - |
+        #!/bin/sh
+        set -euo pipefail
+
+        sudo cp --verbose --recursive --preserve --reflink=auto /var/lib/etcd/ /var/backup/etcd
+    resources:
+      requests:
+        memory: 60Mi
+        cpu: 10m
+    volumeMounts:
+      - mountPath: /etc/kubernetes/manifests
+        name: static-pod-dir
+      - mountPath: /etc/kubernetes/static-pod-resources
+        name: resource-dir
+      - mountPath: /etc/kubernetes/static-pod-certs
+        name: cert-dir
+      - mountPath: /var/lib/etcd/
+        name: data-dir
+      - mountPath: /var/backup/etcd
+        name: backup-dir
   - name: etcd
     image: ${IMAGE}
     imagePullPolicy: IfNotPresent
@@ -335,3 +363,7 @@ ${COMPUTED_ENV_VARS}
     - hostPath:
         path: /var/log/etcd
       name: log-dir
+    - hostPath:
+        path: /var/backup/etcd
+        type: ""
+      name: backup-dir
diff --git a/pkg/operator/etcd_assets/bindata.go b/pkg/operator/etcd_assets/bindata.go
index f8e67500d6..74d9b41dbc 100644
--- a/pkg/operator/etcd_assets/bindata.go
+++ b/pkg/operator/etcd_assets/bindata.go
@@ -1045,6 +1045,34 @@ ${COMPUTED_ENV_VARS}
 ${COMPUTED_ENV_VARS}
       - name: "ETCD_STATIC_POD_VERSION"
         value: "REVISION"
+  # The etcdbackup container copies snapshots from etcd data dir into backup volume.
+  - name: etcdbackup
+    image: ${IMAGE}
+    imagePullPolicy: IfNotPresent
+    terminationMessagePolicy: FallbackToLogsOnError
+    command:
+      - /bin/sh
+      - -c
+      - |
+        #!/bin/sh
+        set -euo pipefail
+
+        sudo cp --verbose --recursive --preserve --reflink=auto /var/lib/etcd/ /var/backup/etcd
+    resources:
+      requests:
+        memory: 60Mi
+        cpu: 10m
+    volumeMounts:
+      - mountPath: /etc/kubernetes/manifests
+        name: static-pod-dir
+      - mountPath: /etc/kubernetes/static-pod-resources
+        name: resource-dir
+      - mountPath: /etc/kubernetes/static-pod-certs
+        name: cert-dir
+      - mountPath: /var/lib/etcd/
+        name: data-dir
+      - mountPath: /var/backup/etcd
+        name: backup-dir
   - name: etcd
     image: ${IMAGE}
     imagePullPolicy: IfNotPresent
@@ -1251,6 +1279,10 @@ ${COMPUTED_ENV_VARS}
     - hostPath:
         path: /var/log/etcd
       name: log-dir
+    - hostPath:
+        path: /var/backup/etcd
+        type: ""
+      name: backup-dir
 `)
 
 func etcdPodYamlBytes() ([]byte, error) {