migrat backup_maverick.sh a restic

bash/backup_maverick.sh

@@ -1,68 +1,86 @@
 #!/bin/bash
+set -euo pipefail
+
+## Contraseña del repositorio restic: maverick-backup-2024
+## Fichero: /root/.restic-password (chmod 600)
 
 ## Variables
-NOW=$(date +"%d-%m-%Y %T")
-readonly NOW
-
-## Destino del backup
+readonly RESTIC_REPOSITORY=/sustancia/backup/maverick-restic
+readonly RESTIC_PASSWORD_FILE=/root/.restic-password
 readonly BACKUP_MOUNT=/sustancia/backup
-readonly BACKUP_TARGET=${BACKUP_MOUNT}/maverick
-readonly LOG="${BACKUP_TARGET}"/backup_maverick.log
-readonly TARGET_SYSTEM_FILES=${BACKUP_TARGET}/system
-readonly TARGET_FILES=${BACKUP_TARGET}/files
-readonly TARGET_DOCKER=${BACKUP_TARGET}/docker
-readonly TARGET_HOME=${BACKUP_TARGET}/home
-
-## Backup de la carpeta home
+readonly LOG="${BACKUP_MOUNT}/backup_maverick.log"
 readonly BACKUP_HOME=/home/sergio
-
-## Backup de docker
 readonly BACKUP_DOCKER=/home/sergio/docker
 readonly BACKUP_DOCKER_VOLUMES=/var/volumes
 
-## Monta la carpetas del nas
-mount $BACKUP_MOUNT
+export RESTIC_REPOSITORY RESTIC_PASSWORD_FILE
 
-## Comprueba si se ha montado la carpeta
-if [ -f ${BACKUP_MOUNT}/not_mount ]; then
-    printf "No se ha montado la carpeta de destino\n"
-    exit 0
+RUNNING_CONTAINERS=""
+
+cleanup() {
+    local exit_code=$?
+    if [ -n "$RUNNING_CONTAINERS" ]; then
+        printf "\n\n>> ARRANCANDO CONTENEDORES (cleanup)\n" | tee -a "${LOG}"
+        echo "$RUNNING_CONTAINERS" | xargs docker start | tee -a "${LOG}"
+    fi
+    umount "$BACKUP_MOUNT" 2>/dev/null || true
+    if [ $exit_code -ne 0 ]; then
+        printf "\n\nBACKUP FALLIDO (código: %d)\n" "$exit_code" | tee -a "${LOG}"
+    fi
+}
+trap cleanup EXIT
+
+log_section() {
+    printf "\n\n>> %s [%s]\n" "$1" "$(date +"%T")" | tee -a "${LOG}"
+}
+
+## Monta la carpeta del nas
+mountpoint -q "$BACKUP_MOUNT" || mount "$BACKUP_MOUNT"
+
+if ! mountpoint -q "$BACKUP_MOUNT"; then
+    printf "No se ha podido montar %s\n" "$BACKUP_MOUNT" >&2
+    exit 1
+fi
+
+## Rotar log: renombrar el actual con timestamp y conservar los últimos 5
+if [ -f "${LOG}" ]; then
+    mv "${LOG}" "${LOG}.$(date +%Y%m%d_%H%M%S)"
+    find "${BACKUP_MOUNT}" -maxdepth 1 -name 'backup_maverick.log.*' -printf '%T@ %p\n' \
+        | sort -rn | tail -n +6 | awk '{print $2}' | xargs -r rm --
+fi
+
+## Inicializar repo si no existe
+if ! restic snapshots &>/dev/null; then
+    restic init
 fi
 
 ## Empieza el proceso de backup
-printf "\n\nCOMIENZA LA COPIA DE SEGURIDAD (%s)\n" "${NOW}" | tee -a "${LOG}"
+SCRIPT_START=$(date +%s)
+printf "\n\nCOMIENZA LA COPIA DE SEGURIDAD (%s)\n" "$(date +"%d-%m-%Y %T")" | tee -a "${LOG}"
 
 ## Backup de ficheros del sistema
-printf "\n\n>> COPIANDO FICHEROS DEL SISTEMA\n" | tee -a "${LOG}"
-mkdir -p "${TARGET_SYSTEM_FILES}/"
-for i in /etc/cron.*; do
-    rsync -avh --delete "$i" "${TARGET_SYSTEM_FILES}"/ | tee -a "${LOG}"
+log_section "COPIANDO FICHEROS DEL SISTEMA"
+SYSTEM_PATHS=()
+for p in /etc/cron.d /etc/cron.daily /etc/cron.hourly /etc/cron.monthly \
+          /etc/cron.weekly /etc/crontab /etc/fstab; do
+    [ -e "$p" ] && SYSTEM_PATHS+=("$p")
 done
-rsync -avh --delete /etc/fstab "${TARGET_SYSTEM_FILES}"/ | tee -a "${LOG}"
-rsync -avh --delete /etc/crontab "${TARGET_SYSTEM_FILES}"/ | tee -a "${LOG}"
+if [ ${#SYSTEM_PATHS[@]} -gt 0 ]; then
+    restic backup "${SYSTEM_PATHS[@]}" --tag sistema | tee -a "${LOG}"
+fi
 
-## Backup de ficheros
-FILES=".gitconfig .git-credentials"
-for FILE in $FILES; do
-    printf "\n\n>> COPIANDO FICHEROS\n" | tee -a "${LOG}"
-    if [ -f "${BACKUP_HOME}"/"${FILE}" ]; then
-        mkdir -p "${TARGET_FILES}/"
-        rsync -avh --delete "${BACKUP_HOME}"/"${FILE}" "${TARGET_FILES}/" | tee -a "${LOG}"
-    fi
+## Backup de ficheros home
+log_section "COPIANDO FICHEROS HOME"
+HOME_FILES=()
+for f in ".gitconfig" ".git-credentials" ".ssh"; do
+    [ -e "${BACKUP_HOME}/${f}" ] && HOME_FILES+=("${BACKUP_HOME}/${f}")
 done
+if [ ${#HOME_FILES[@]} -gt 0 ]; then
+    restic backup "${HOME_FILES[@]}" --tag home | tee -a "${LOG}"
+fi
 
-## Backup de las carpetas del directorio home
-FOLDERS=".ssh"
-for FOLDER in $FOLDERS; do
-    if [ -d "${BACKUP_HOME}"/"${FOLDER}" ]; then
-        printf "\n\n>> COPIANDO %s\n" "${FOLDER}" | tee -a "${LOG}"
-        mkdir -p "${TARGET_HOME}"
-        rsync -avh --delete "${BACKUP_HOME}"/"${FOLDER}" "${TARGET_HOME}" | tee -a "${LOG}"
-    fi
-done
-
-## Backup de docker compose y volumenes
-printf "\n\n>> DETENIENDO CONTENEDORES\n"
+## Parar contenedores Docker
+log_section "DETENIENDO CONTENEDORES"
 RUNNING_CONTAINERS=$(docker ps -q)
 if [ -n "$RUNNING_CONTAINERS" ]; then
     echo "$RUNNING_CONTAINERS" | xargs docker stop | tee -a "${LOG}"
@@ -70,22 +88,23 @@ else
     printf "No hay contenedores en ejecución\n" | tee -a "${LOG}"
 fi
 
-FOLDER=DOCKER
-if [ -d "${BACKUP_DOCKER}" ]; then
-    printf "\n\n>> COPIANDO %s\n" "${FOLDER}" | tee -a "${LOG}"
-    mkdir -p "${TARGET_DOCKER}/compose/"
-    rsync -avh --delete "${BACKUP_DOCKER}/" "${TARGET_DOCKER}/compose/" | tee -a "${LOG}"
-fi
-FOLDER=DOCKER_VOLUMES
-if [ -d "${BACKUP_DOCKER_VOLUMES}" ]; then
-    printf "\n\n>> COPIANDO %s\n" "${FOLDER}" | tee -a "${LOG}"
-    mkdir -p "${TARGET_DOCKER}/volumes/"
-    rsync -avh --delete "${BACKUP_DOCKER_VOLUMES}/" "${TARGET_DOCKER}/volumes/" | tee -a "${LOG}"
+## Backup de docker compose y volúmenes
+log_section "COPIANDO DOCKER"
+DOCKER_PATHS=()
+[ -d "${BACKUP_DOCKER}" ] && DOCKER_PATHS+=("${BACKUP_DOCKER}")
+[ -d "${BACKUP_DOCKER_VOLUMES}" ] && DOCKER_PATHS+=("${BACKUP_DOCKER_VOLUMES}")
+if [ ${#DOCKER_PATHS[@]} -gt 0 ]; then
+    restic backup "${DOCKER_PATHS[@]}" --tag docker | tee -a "${LOG}"
 fi
 
-printf "\n\n>> ARRANCANDO CONTENEDORES\n"
-if [ -n "$RUNNING_CONTAINERS" ]; then
-    echo "$RUNNING_CONTAINERS" | xargs docker start | tee -a "${LOG}"
-else
-    printf "No hay contenedores para arrancar\n" | tee -a "${LOG}"
-fi
+## Retención: eliminar snapshots antiguos
+log_section "LIMPIEZA DE SNAPSHOTS ANTIGUOS"
+restic forget \
+    --keep-daily 7 \
+    --keep-weekly 4 \
+    --keep-monthly 6 \
+    --prune | tee -a "${LOG}"
+
+ELAPSED=$(( $(date +%s) - SCRIPT_START ))
+printf "\n\nBACKUP COMPLETADO correctamente en %dm %ds\n" \
+    "$((ELAPSED/60))" "$((ELAPSED%60))" | tee -a "${LOG}"