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Delete trmmcronbackup.sh
not needed anymore
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dinger1986
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#! /bin/bash
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# trmmcronbackup : Back up Tactical RMM via backup.sh with backup rotation
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# SPDX-FileCopyrightText: 2022 Timothy J. Massey <github:fts-tmassey>
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# SPDX-License-Identifier: GPL-2.0-or-later
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# This script runs the standard TRMM-provided backup.sh script and keeps
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# up to a maximum number of backup files, deleting the oldest backups when
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# necessary. This is intended to run as a periodic cron job, simply by
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# putting it in e.g. cron.daily. You can find more details at:
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# https://github.com/fts-tmassey/tacticalrmm-cronbackup
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# Configuration Variables
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VERBOSE=FALSE # Use TRUE for verbose output
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BACKUP_COUNT=8 # Number of backups to keep
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PATH_TO_SCRIPT=/rmm/backup.sh # Path to backup script
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PATH_TO_BACKUPS=/rmmbackups # Path to backup destination
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#SCRIPT_USER=tactical # Run script as (unset: use script owner)
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# Script begins below
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vecho() { # Echo only if user specifies Verbose output
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if [[ "${VERBOSE}" == "TRUE" ]]; then echo "${1}"; fi
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}
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# Check the configuration variables
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vecho "Initial configuration variables:"
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vecho "-- BACKUP_COUNT: ${BACKUP_COUNT}"
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case ${BACKUP_COUNT} in
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''|*[!0-9]*) # Make sure variable is a number
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echo "Bad BACKUP_COUNT: ${BACKUP_COUNT}. Make sure this is a number. Exiting..."
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exit 1
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;;
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esac
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vecho "-- PATH_TO_SCRIPT: \"${PATH_TO_SCRIPT}\""
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if [[ ! -f ${PATH_TO_SCRIPT} ]]; then
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echo "PATH_TO_SCRIPT not found. Exiting..."
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exit 1
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fi
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if [[ ! -x ${PATH_TO_SCRIPT} ]]; then
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echo "The file pointed to by PATH_TO_SCRIPT is not executable. Exiting..."
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exit 1
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fi
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vecho "-- PATH_TO_BACKUPS: \"${PATH_TO_BACKUPS}\""
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if [[ ! -d ${PATH_TO_BACKUPS} ]]; then
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echo "PATH_TO_BACKUPS is not a valid directory. Exiting..."
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exit 1
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fi
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vecho "-- SCRIPT_USER: \"${SCRIPT_USER}\""
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if [ -z "${SCRIPT_USER}" ]; then # If user unset
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SCRIPT_USER=$(stat -c '%U' "${PATH_TO_SCRIPT}") # use script owner
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vecho "-- Detected user: ${SCRIPT_USER}"
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fi
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if ! id -u "${SCRIPT_USER}" &>/dev/null; then
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echo "The user does not exist. Exiting..."
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exit 1
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fi
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vecho "Initial configuration variables: OK"
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# Get initial count of backup files
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INITIAL_COUNT=$(sudo su "${SCRIPT_USER}" -c "ls ${PATH_TO_BACKUPS}|wc -l")
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vecho "Initial backup file count: ${INITIAL_COUNT}"
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case ${INITIAL_COUNT} in
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''|*[!0-9]*) # Make sure variable is a number
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echo "Bad initial count of backups: ${INITIAL_COUNT}. Backup was not performed."
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exit 1
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;;
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esac
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# Run the backup script
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# stderr is not captured with $(), so use array/eval to run backup.sh silently
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SCRIPT_CMD_ARRAY=(sudo su - "${SCRIPT_USER}" "-c \"cd ~ ; ${PATH_TO_SCRIPT}\"" )
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vecho "Run Script: ${SCRIPT_CMD_ARRAY[*]}"
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if [[ "${VERBOSE}" == "TRUE" ]]; then
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eval "${SCRIPT_CMD_ARRAY[*]}"
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else
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eval "${SCRIPT_CMD_ARRAY[*]} &>/dev/null"
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fi
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SCRIPT_RETURN=$?
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vecho "The script returned: ${SCRIPT_RETURN}"
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if ! [[ "${SCRIPT_RETURN}" -eq 0 ]] ; then
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echo "Backup script failed. Cleanup was not performed."
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exit 1
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fi
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# Get new count of backup files and check that a new one was created
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NEW_COUNT=$(sudo su "${SCRIPT_USER}" -c "ls ${PATH_TO_BACKUPS}|wc -l")
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vecho "Post-run backup file count: ${NEW_COUNT}"
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case ${NEW_COUNT} in
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''|*[!0-9]*) # Make sure variable is a number
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echo "Bad after-script count of backups: ${NEW_COUNT}. Cleanup was not performed."
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exit 1
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;;
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esac
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if ! [[ "${NEW_COUNT}" -gt "${INITIAL_COUNT}" ]] ; then
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echo "Backup did not seem to create new file. Cleanup was not performed."
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exit 1
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fi
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# Check if we have too many backup files and delete until we don't
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while [ "${NEW_COUNT}" -gt "${BACKUP_COUNT}" ] ; do
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vecho "There are more than ${BACKUP_COUNT} files: delete oldest file."
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# Get the list of files sorted by change date and get the last one
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FILE_TO_DELETE=$(sudo su "${SCRIPT_USER}" -c "ls ${PATH_TO_BACKUPS} --sort=time --time=ctime|tail -1")
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vecho "File to delete: ${FILE_TO_DELETE}"
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case ${FILE_TO_DELETE} in
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''|*[!0-9a-zA-Z._-]*) # Make sure variable uses only limited characters
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echo "Filename contains unexpected characters. Cleanup cancelled."
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exit 1
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;;
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esac
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# Delete the file
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RM_OUT=$(sudo su "${SCRIPT_USER}" -c "rm -fv --interactive=never '${PATH_TO_BACKUPS}/${FILE_TO_DELETE}'")
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vecho "rm output: ${RM_OUT}"
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if [[ -f ${PATH_TO_BACKUPS}/${FILE_TO_DELETE} ]] ; then
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echo "Backup file ${PATH_TO_BACKUPS}/${FILE_TO_DELETE} did not delete. Cancelling cleanup."
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exit 1
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fi
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# Get the updated count
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INITIAL_COUNT=${NEW_COUNT}
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NEW_COUNT=$(sudo su "${SCRIPT_USER}" -c "ls ${PATH_TO_BACKUPS}|wc -l")
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vecho "Updated backup file count: ${NEW_COUNT}"
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case ${NEW_COUNT} in
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''|*[!0-9]*) # Make sure variable is a number
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echo "Error getting new count of backups. Cleanup was cancelled."
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exit 1
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;;
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esac
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if ! [[ "${NEW_COUNT}" -lt "${INITIAL_COUNT}" ]] ; then
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echo "Cleanup did not seem to remove old file. Cleanup was cancelled."
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exit 1
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fi
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done
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vecho "After cleanup, ${NEW_COUNT} files remain with a maximum of ${BACKUP_COUNT}."
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vecho "Backup and cleanup complete."
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exit 0
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