Add redis-to-valkey migratior

helper-scripts/redis-to-valkey.sh

@@ -0,0 +1,52 @@
+#!/bin/bash
+
+SCRIPT_DIR=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
+source "${SCRIPT_DIR}/../mailcow.conf"
+
+VOLUME="${COMPOSE_PROJECT_NAME}_redis-vol-1"
+if ! docker volume inspect "$VOLUME" &>/dev/null; then
+    echo "Error: Docker volume '$VOLUME' does not exist. Nothing to migrate."
+    exit 1
+fi
+
+read -p "Do you want to proceed with the migration of your old redis data to valkey? (y/n) " CONFIRM
+if [[ ! "$CONFIRM" =~ ^([yY][eE][sS]|[yY])+$ ]]; then
+    echo "Migration aborted."
+    exit 0
+fi
+
+# Run the old Redis container
+docker run -d --name redis-old-mailcow \
+    --restart always \
+    --network ${COMPOSE_PROJECT_NAME}_mailcow-network \
+    --hostname redis-old \
+    --volume ${VOLUME}:/data/ \
+    --volume ${SCRIPT_DIR}/../data/conf/valkey/valkey-conf.sh:/valkey-conf.sh:z \
+    --entrypoint "/bin/sh" \
+    -e VALKEYPASS="${VALKEYPASS}" \
+    redis:7.4.2-alpine -c "/valkey-conf.sh && redis-server /valkey.conf"
+
+
+# Wait for old Redis to be ready
+echo "Waiting for redis-old-mailcow to be ready..."
+until docker exec redis-old-mailcow redis-cli -a "$VALKEYPASS" ping | grep -q "PONG"; do
+    echo "Redis not ready yet..."
+    sleep 2
+done
+echo "redis-old-mailcow is ready!"
+
+# Run the migrate container
+docker run --rm --name valkeymigrator-mailcow \
+    --network ${COMPOSE_PROJECT_NAME}_mailcow-network \
+    -e VALKEYPASS="${VALKEYPASS}" \
+    mailcow/valkeymigrator:0.1
+
+echo "Migration completed!"
+docker stop redis-old-mailcow
+docker rm redis-old-mailcow
+
+read -p "Do you want to delete the old Redis volume? (y/n) " CONFIRM
+if [[ "$CONFIRM" =~ ^([yY][eE][sS]|[yY])+$ ]]; then
+    docker volume rm "$VOLUME"
+    echo "Docker volume '$VOLUME' has been deleted."
+fi