DB backup: fix rclone config access

Author: djbe

database-backup/scripts/other/lib/rclone.sh

@@ -8,9 +8,25 @@ fi
 
 # Constants
 readonly RCLONE_CONCURRENCY=2
+readonly RCLONE_CONFIG_DIR=/etc/rclone
+readonly RCLONE_CONFIG_PATH="${RCLONE_CONFIG_DIR}/rclone.conf"
 readonly RCLONE_CHUNK_SIZE=16M
 readonly RCLONE_TIMEOUT=30s
 
+rclone_cmd() {
+  rclone --config="$RCLONE_CONFIG_PATH" $@
+}
+
+#
+# === Setup ===
+#
+
+rclone_bootstrap_config() {
+  mkdir -p "$RCLONE_CONFIG_DIR"
+  rclone_cmd config touch >/dev/null 2>&1
+  chmod a+r $RCLONE_CONFIG_PATH
+}
+
 #
 # === RDB Backup Functions ===
 #
@@ -20,7 +36,7 @@ readonly RCLONE_TIMEOUT=30s
 # - Target
 rclone_copy_url() {
   # Note: limit memory use by setting low concurrency & chunk size
-  rclone copyurl "$1" "$2" \
+  rclone_cmd copyurl "$1" "$2" \
     --low-level-retries 5 \
     --no-check-certificate \
     --progress \

database-backup/scripts/startup/50-env-configure-rclone.sh

@@ -2,6 +2,7 @@
 
 SCRIPT_DIR=$(cd "$(dirname "$0")" && pwd)
 . "${SCRIPT_DIR}/../other/lib/_common.sh"
+. "${SCRIPT_DIR}/../other/lib/rclone.sh"
 
 # Configure rclone tool with a set of S3 credentials
 #
@@ -16,8 +17,11 @@ SCRIPT_DIR=$(cd "$(dirname "$0")" && pwd)
 # Input validation
 require_env_vars S3_PROVIDER S3_ACCESS_KEY_ID S3_SECRET_ACCESS_KEY S3_REGION S3_ENDPOINT
 
+echo "Configuring rclone remote…"
+
 # Create configuration, will be used by later rclone invocations
-rclone config create s3-remote s3 \
+rclone_bootstrap_config
+rclone_cmd config create s3-remote s3 \
   provider "$S3_PROVIDER" \
   access_key_id "$S3_ACCESS_KEY_ID" \
   secret_access_key "$S3_SECRET_ACCESS_KEY" \