Add workflow to build image

.github/workflows/docker.yaml

@@ -9,7 +9,7 @@ permissions:
   packages: write
 
 jobs:
-  docker:
+  nomad-scale:
     runs-on: ubuntu-latest
 
     steps:
@@ -34,3 +34,29 @@ jobs:
           tags: |
             gitea.lol3r.com/leon/nomad-scale:latest
             gitea.lol3r.com/leon/nomad-scale:${{ gitea.sha }}
+
+  ceph-rbd-backup:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - name: Log in to Gitea Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: gitea.lol3r.com
+          username: leon
+          password: ${{ secrets.DOCKER_PAT }}
+
+      - name: Build and push - nomad-scale
+        uses: docker/build-push-action@v6
+        with:
+          context: ./ceph-rbd-backup
+          file: ./ceph-rbd-backup/Dockerfile
+          push: true
+          tags: |
+            gitea.lol3r.com/leon/ceph-rbd-backup:latest
+            gitea.lol3r.com/leon/ceph-rbd-backup:${{ gitea.sha }}

ceph-rbd-backup/Dockerfile

@@ -0,0 +1,5 @@
+FROM quay.io/ceph/ceph:v20.2
+
+COPY script.sh /script.sh
+
+ENTRYPOINT ["/bin/bash", "/script.sh"]

ceph-rbd-backup/README.md

@@ -0,0 +1,10 @@
+# Ceph-RBD-backup
+
+## Environment Variables
+| Name | Default | Description |
+|---|---|---|
+| CEPH_USERNAME | - | TODO |
+| RBD_POOL | - | TODO |
+| RBD_IMAGE_ID | - | TODO |
+| SNAPSHOT_ID | - | TODO |
+| OUTPUT_FILE | - | TODO |

ceph-rbd-backup/script.sh

@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+CEPH_USERNAME="${CEPH_USERNAME:-}"
+RBD_POOL="${RBD_POOL:-}"
+RBD_IMAGE_ID="${RBD_IMAGE_ID:-}"
+SNAPSHOT_ID="${SNAPSHOT_ID:-}"
+OUTPUT_FILE="${OUTPUT_FILE:-}"
+
+# Create the snapshot
+rbd --name ${CEPH_USERNAME} snap create ${RBD_POOL}/${RBD_IMAGE_ID}@${SNAPSHOT_ID};
+
+# Export the snapshot to a file
+rbd --name ${CEPH_USERNAME} export --export-format 2 ${RBD_POOL}/${RBD_IMAGE_ID}@${SNAPSHOT_ID} - | zstd -T1 -3 ${OUTPUT_FILE};
+touch ${OUTPUT_FILE}.done;
+
+ls -al ${OUTPUT_FILE};
+
+# Remove the snapshot again
+rbd --name ${CEPH_USERNAME} snap rm ${RBD_POOL}/${RBD_IMAGE_ID}@${SNAPSHOT_ID};