retention

.gitignore

@@ -0,0 +1,2 @@
+docker-compose.yaml
+config/

Dockerfile

@@ -6,7 +6,7 @@ RUN \
 
 COPY rootfs /
 
-HEALTHCHECK  --interval=2m --timeout=3s \
+HEALTHCHECK --interval=1m --timeout=3s --start-period=20s --retries=1 \
   CMD /app/healthcheck.sh || exit 1
 
 ENTRYPOINT [ "/sbin/tini", "/app/entrypoint.sh" ]

README.md

@@ -35,6 +35,7 @@ services:
       MARIADB_DATABASE: my-db
       CRONTAB: "15 */4 * * *"
       COMPRESSION: gzip  # gzip | bzip2 | xz | zstd
+      KEEP_SUCCESFUL_DAYS: 15  # default is 30
       RCLONE_REMOTE: myremote
       RCLONE_PATH: /backups
       RCLONE_CONFIG_FILE: /config/rclone.conf

rootfs/app/backup.sh

@@ -1,10 +1,7 @@
 #!/bin/sh
 
-set -o pipefail
-
 STATUS_FILE=/last_backup_status.txt
 
-
 MARIADB_HOST=${MARIADB_HOST:-db}
 MARIADB_USER=${MARIADB_USER:-root}
 MARIADB_PORT=${MARIADB_PORT:-3306}
@@ -14,18 +11,26 @@ COMPRESSION=${COMPRESSION:-gzip}
 RCLONE_CONFIG_FILE=${RCLONE_CONFIG_FILE:-/config/rclone.conf}
 RCLONE_REMOTE=${RCLONE_REMOTE:-myremote}
 RCLONE_PATH=${RCLONE_PATH:-/backups}
+KEEP_SUCCESFUL_DAYS=${KEEP_SUCCESFUL_DAYS:-30}
 
 TMPDIR=$(mktemp -d)
 DEST_FILENAME=$(date +%Y-%m-%d_%H-%M-%S).sql
 BACKUP_FILE="${TMPDIR}/${DEST_FILENAME}"
-
+RCLONE_DEST_PATH="${RCLONE_PATH}/$(date +%Y-%m-%d)"
 
 trap cleanup EXIT
 cleanup() {
-#   rm -rf "${TMPDIR}"
+  rm -rf "${TMPDIR}"
   echo "Removed temporary file"
 }
 
+trap interrupt INT
+interrupt() {
+  echo "Backup interrupted"
+  echo "interrupted" > "${STATUS_FILE}"
+  exit 1
+}
+
 if [ ! -f "${RCLONE_CONFIG_FILE}" ]; then
   echo "Rclone config file not found"
   exit 1
@@ -51,7 +56,12 @@ copy_failed() {
   exit 1
 }
 
-COMPRESSOR=cat
+delete_failed() {
+  echo "Cleanup delete failed"
+  exit 1
+}
+
+COMPRESSOR="cat"
 if [ "${COMPRESSION}" = "gzip" ]; then
   COMPRESSOR="gzip"
   BACKUP_FILE="${BACKUP_FILE}.gz"
@@ -85,9 +95,9 @@ mariadb-dump \
   --quick \
   --triggers \
   --tz-utc -v \
-  --host=${MARIADB_HOST} \
+  --host="${MARIADB_HOST}" \
-  --port=${MARIADB_PORT} \
+  --port="${MARIADB_PORT}" \
-  --user=${MARIADB_USER} \
+  --user="${MARIADB_USER}" \
   --password="${MARIADB_PASSWORD}" \
   --databases "${MARIADB_DATABASE}" | "${COMPRESSOR}" > "${BACKUP_FILE}" || dump_failed
 
@@ -96,12 +106,27 @@ echo "Copying backup to remote"
 
 rclone \
   -v --config "${RCLONE_CONFIG_FILE}" \
-  mkdir "${RCLONE_REMOTE}:${RCLONE_PATH}" || mkdir_failed
+  mkdir "${RCLONE_REMOTE}:${RCLONE_DEST_PATH}" || mkdir_failed
 
 rclone \
   -v --config "${RCLONE_CONFIG_FILE}" \
-  copy "${BACKUP_FILE}" "${RCLONE_REMOTE}:${RCLONE_PATH}" || copy_failed
+  copy "${BACKUP_FILE}" "${RCLONE_REMOTE}:${RCLONE_DEST_PATH}" || copy_failed
 
 echo "success" > "${STATUS_FILE}"
 
 echo "Backup completed"
+
+echo "Cleaning up old backups"
+
+rclone \
+  -v --config "${RCLONE_CONFIG_FILE}" \
+  lsd "${RCLONE_REMOTE}:${RCLONE_PATH}" | \
+  awk '{print $5}' | sort -r | tail -n +$((KEEP_SUCCESFUL_DAYS + 1)) \
+  | while read -r line; do
+    echo "Deleting backup: ${line}"
+    rclone \
+      -v --config "${RCLONE_CONFIG_FILE}" \
+      purge "${RCLONE_REMOTE}:${RCLONE_PATH}/${line}" || delete_failed
+  done
+
+echo "Cleanup completed"

rootfs/app/entrypoint.sh

@@ -4,4 +4,5 @@ CRONTAB=${CRONTAB:-"0 12 * * *"}
 
 echo "${CRONTAB} /app/backup.sh" > /etc/crontabs/root
 
-crond -f
+echo "Starting cron"
+crond -f -d 7