#!/usr/bin/env bash
#
# Auto backup script
#
# Copyright (C) 2016 Teddysun <i@teddysun.com>
#
# URL: https://teddysun.com/469.html
#
# You must to modify the config before run it!!!
# Backup MySQL/MariaDB/Percona datebases, files and directories
# Backup file is encrypted with AES256-cbc with SHA1 message-digest (option)
# Auto transfer backup file to Google Drive (need install gdrive command) (option)
# Auto transfer backup file to FTP server (option)
# Auto delete Google Drive's or FTP server's remote file (option)
#[[ $EUID -ne 0 ]] && echo "Error: This script must be run as root!" && exit 1########## START OF CONFIG ########### Encrypt flag (true: encrypt, false: not encrypt)
ENCRYPTFLG=true# WARNING: KEEP THE PASSWORD SAFE!!!
# The password used to encrypt the backup
# To decrypt backups made by this script, run the following command:
# openssl enc -aes256 -in [encrypted backup] -out decrypted_backup.tgz -pass pass:[backup password] -d -md sha1
BACKUPPASS="mypassword"# Directory to store backups
LOCALDIR="/root/backups/"# Temporary directory used during backup creation
TEMPDIR="/root/backups/temp/"# File to log the outcome of backups
LOGFILE="/root/backups/backup.log"# OPTIONAL: If you want backup MySQL database, enter the MySQL root password below
MYSQL_ROOT_PASSWORD=""# Below is a list of MySQL database name that will be backed up
# If you want backup ALL databases, leave it blank.
MYSQL_DATABASE_NAME[0]=""# Below is a list of files and directories that will be backed up in the tar backup
# For example:
# File: /data/www/default/test.tgz
# Directory: /data/www/default/test
BACKUP[0]=""# Number of days to store daily local backups (default 7 days)
LOCALAGEDAILIES="7"# Delete Googole Drive's & FTP server's remote file flag (true: delete, false: not delete)
DELETE_REMOTE_FILE_FLG=false# Upload to FTP server flag (true: upload, false: not upload)
FTP_FLG=false# FTP server
# OPTIONAL: If you want upload to FTP server, enter the Hostname or IP address below
FTP_HOST=""# FTP username
# OPTIONAL: If you want upload to FTP server, enter the FTP username below
FTP_USER=""# FTP password
# OPTIONAL: If you want upload to FTP server, enter the username's password below
FTP_PASS=""# FTP server remote folder
# OPTIONAL: If you want upload to FTP server, enter the FTP remote folder below
# For example: public_html
FTP_DIR=""########## END OF CONFIG ########### Date & Time
DAY=$(date +%d)
MONTH=$(date +%m)
YEAR=$(date +%C%y)
BACKUPDATE=$(date +%Y%m%d%H%M%S)
# Backup file name
TARFILE="${LOCALDIR}""$(hostname)"_"${BACKUPDATE}".tgz
# Encrypted backup file name
ENC_TARFILE="${TARFILE}.enc"
# Backup MySQL dump file name
SQLFILE="${TEMPDIR}mysql_${BACKUPDATE}.sql"log() {echo "$(date "+%Y-%m-%d %H:%M:%S")" "$1"echo -e "$(date "+%Y-%m-%d %H:%M:%S")" "$1" >> ${LOGFILE}
}# Check for list of mandatory binaries
check_commands() {# This section checks for all of the binaries used in the backupBINARIES=( cat cd du date dirname echo openssl mysql mysqldump pwd rm tar )# Iterate over the list of binaries, and if one isn't found, abortfor BINARY in "${BINARIES[@]}"; doif [ ! "$(command -v "$BINARY")" ]; thenlog "$BINARY is not installed. Install it and try again"exit 1fidone# check gdrive commandGDRIVE_COMMAND=falseif [ "$(command -v "gdrive")" ]; thenGDRIVE_COMMAND=truefi# check ftp commandif ${FTP_FLG}; thenif [ ! "$(command -v "ftp")" ]; thenlog "ftp is not installed. Install it and try again"exit 1fifi
}calculate_size() {local file_name=$1local file_size=$(du -h $file_name 2>/dev/null | awk '{print $1}')if [ "x${file_size}" = "x" ]; thenecho "unknown"elseecho "${file_size}"fi
}# Backup MySQL databases
mysql_backup() {if [ -z ${MYSQL_ROOT_PASSWORD} ]; thenlog "MySQL root password not set, MySQL backup skipped"elselog "MySQL dump start"mysql -u root -p"${MYSQL_ROOT_PASSWORD}" 2>/dev/null <<EOF
exit
EOFif [ $? -ne 0 ]; thenlog "MySQL root password is incorrect. Please check it and try again"exit 1fiif [ "${MYSQL_DATABASE_NAME[*]}" == "" ]; thenmysqldump -u root -p"${MYSQL_ROOT_PASSWORD}" --all-databases > "${SQLFILE}" 2>/dev/nullif [ $? -ne 0 ]; thenlog "MySQL all databases backup failed"exit 1filog "MySQL all databases dump file name: ${SQLFILE}"#Add MySQL backup dump file to BACKUP listBACKUP=(${BACKUP[*]} ${SQLFILE})elsefor db in ${MYSQL_DATABASE_NAME[*]}dounset DBFILEDBFILE="${TEMPDIR}${db}_${BACKUPDATE}.sql"mysqldump -u root -p"${MYSQL_ROOT_PASSWORD}" ${db} > "${DBFILE}" 2>/dev/nullif [ $? -ne 0 ]; thenlog "MySQL database name [${db}] backup failed, please check database name is correct and try again"exit 1filog "MySQL database name [${db}] dump file name: ${DBFILE}"#Add MySQL backup dump file to BACKUP listBACKUP=(${BACKUP[*]} ${DBFILE})donefilog "MySQL dump completed"fi
}start_backup() {[ "${BACKUP[*]}" == "" ] && echo "Error: You must to modify the [$(basename $0)] config before run it!" && exit 1log "Tar backup file start"tar -zcPf ${TARFILE} ${BACKUP[*]}if [ $? -gt 1 ]; thenlog "Tar backup file failed"exit 1filog "Tar backup file completed"# Encrypt tar fileif ${ENCRYPTFLG}; thenlog "Encrypt backup file start"openssl enc -aes256 -in "${TARFILE}" -out "${ENC_TARFILE}" -pass pass:"${BACKUPPASS}" -md sha1log "Encrypt backup file completed"# Delete unencrypted tarlog "Delete unencrypted tar file: ${TARFILE}"rm -f ${TARFILE}fi# Delete MySQL temporary dump filefor sql in `ls ${TEMPDIR}*.sql`dolog "Delete MySQL temporary dump file: ${sql}"rm -f ${sql}doneif ${ENCRYPTFLG}; thenOUT_FILE="${ENC_TARFILE}"elseOUT_FILE="${TARFILE}"filog "File name: ${OUT_FILE}, File size: `calculate_size ${OUT_FILE}`"
}# Transfer backup file to Google Drive
# If you want to install gdrive command, please visit website:
# https://github.com/prasmussen/gdrive
# of cause, you can use below command to install it
# For x86_64: wget -O /usr/bin/gdrive http://dl.lamp.sh/files/gdrive-linux-x64; chmod +x /usr/bin/gdrive
# For i386: wget -O /usr/bin/gdrive http://dl.lamp.sh/files/gdrive-linux-386; chmod +x /usr/bin/gdrive
gdrive_upload() {if ${GDRIVE_COMMAND}; thenlog "Tranferring backup file to Google Drive"gdrive upload --no-progress ${OUT_FILE} >> ${LOGFILE}if [ $? -ne 0 ]; thenlog "Error: Tranferring backup file to Google Drive failed"exit 1filog "Tranferring backup file to Google Drive completed"fi
}# Tranferring backup file to FTP server
ftp_upload() {if ${FTP_FLG}; then[ -z ${FTP_HOST} ] && log "Error: FTP_HOST can not be empty!" && exit 1[ -z ${FTP_USER} ] && log "Error: FTP_USER can not be empty!" && exit 1[ -z ${FTP_PASS} ] && log "Error: FTP_PASS can not be empty!" && exit 1[ -z ${FTP_DIR} ] && log "Error: FTP_DIR can not be empty!" && exit 1local FTP_OUT_FILE=$(basename ${OUT_FILE})log "Tranferring backup file to FTP server"ftp -in ${FTP_HOST} 2>&1 >> ${LOGFILE} <<EOF
user $FTP_USER $FTP_PASS
binary
lcd $LOCALDIR
cd $FTP_DIR
put $FTP_OUT_FILE
quit
EOFlog "Tranferring backup file to FTP server completed"fi
}# Get file date
get_file_date() {#Approximate a 30-day month and 365-day yearDAYS=$(( $((10#${YEAR}*365)) + $((10#${MONTH}*30)) + $((10#${DAY})) ))unset FILEYEAR FILEMONTH FILEDAY FILEDAYS FILEAGEFILEYEAR=$(echo "$1" | cut -d_ -f2 | cut -c 1-4)FILEMONTH=$(echo "$1" | cut -d_ -f2 | cut -c 5-6)FILEDAY=$(echo "$1" | cut -d_ -f2 | cut -c 7-8)if [[ "${FILEYEAR}" && "${FILEMONTH}" && "${FILEDAY}" ]]; then#Approximate a 30-day month and 365-day yearFILEDAYS=$(( $((10#${FILEYEAR}*365)) + $((10#${FILEMONTH}*30)) + $((10#${FILEDAY})) ))FILEAGE=$(( 10#${DAYS} - 10#${FILEDAYS} ))return 0fireturn 1
}# Delete Google Drive's old backup file
delete_gdrive_file() {local FILENAME=$1if ${DELETE_REMOTE_FILE_FLG} && ${GDRIVE_COMMAND}; thenlocal FILEID=$(gdrive list -q "name = '${FILENAME}'" --no-header | awk '{print $1}')if [ -n ${FILEID} ]; thengdrive delete ${FILEID} >> ${LOGFILE}log "Google Drive's old backup file name: ${FILENAME} has been deleted"fifi
}# Delete FTP server's old backup file
delete_ftp_file() {local FILENAME=$1if ${DELETE_REMOTE_FILE_FLG} && ${FTP_FLG}; thenftp -in ${FTP_HOST} 2>&1 >> ${LOGFILE} <<EOF
user $FTP_USER $FTP_PASS
cd $FTP_DIR
del $FILENAME
quit
EOFlog "FTP server's old backup file name: ${FILENAME} has been deleted"fi
}# Clean up old file
clean_up_files() {cd ${LOCALDIR} || exitif ${ENCRYPTFLG}; thenLS=($(ls *.enc))elseLS=($(ls *.tgz))fifor f in ${LS[@]}doget_file_date ${f}if [ $? == 0 ]; thenif [[ ${FILEAGE} -gt ${LOCALAGEDAILIES} ]]; thenrm -f ${f}log "Old backup file name: ${f} has been deleted"delete_gdrive_file ${f}delete_ftp_file ${f}fifidone
}# Main progress
STARTTIME=$(date +%s)# Check if the backup folders exist and are writeable
if [ ! -d "${LOCALDIR}" ]; thenmkdir -p ${LOCALDIR}
fi
if [ ! -d "${TEMPDIR}" ]; thenmkdir -p ${TEMPDIR}
filog "Backup progress start"
check_commands
mysql_backup
start_backup
log "Backup progress complete"log "Upload progress start"
gdrive_upload
ftp_upload
log "Upload progress complete"clean_up_filesENDTIME=$(date +%s)
DURATION=$((ENDTIME - STARTTIME))
log "All done"
log "Backup and transfer completed in ${DURATION} seconds"