NextcloudBackup.sh

   1 #!/bin/bash
   2
   3 #
   4 # Bash script for creating backups of Nextcloud.
   5 # Usage: ./NextcloudBackup.sh
   6 #
   7 # The script is based on an installation of Nextcloud using nginx and MariaDB, see https://decatec.de/home-server/nextcloud-auf-ubuntu-server-mit-nginx-mariadb-php-lets-encrypt-redis-und-fail2ban/
   8 #
   9
  10 #
  11 # IMPORTANT
  12 # You have to customize this script (directories, users, etc.) for your actual environment.
  13 # All entries which need to be customized are tagged with "TODO".
  14 #
  15
  16 # Variables
  17 currentDate=$(date +"%Y%m%d_%H%M%S")
  18 # TODO: The directory where you store the Nextcloud backups
  19 backupMainDir="/mnt/Share/NextcloudBackups/"
  20 # The actual directory of the current backup - this is is subdirectory of the main directory above with a timestamp
  21 backupdir="${backupMainDir}/${currentDate}/"
  22 # TODO: The directory of your Nextcloud installation (this is a directory under your web root)
  23 nextcloudFileDir="/var/www/nextcloud"
  24 # TODO: The directory of your Nextcloud data directory (outside the Nextcloud file directory)
  25 # If your data directory is located under Nextcloud's file directory (somewhere in the web root), the data directory should not be a separate part of the backup
  26 nextcloudDataDir="/var/nextcloud_data"
  27 # TODO: Your Nextcloud database name
  28 nextcloudDatabase="nextcloud_db"
  29 # TODO: Your Nextcloud database user
  30 dbUser="nextcloud_db_user"
  31 # TODO: The password of the Nextcloud database user
  32 dbPassword="mYpAsSw0rd"
  33 # TODO: Your webserver user
  34 webserverUser="www-data"
  35 # TODO: The maximum number of backups to keep (when set to 0, all backups are kept)
  36 maxNrOfBackups=0
  37
  38 # File names for backup files
  39 # If you prefer other file names, you'll also have to change the NextcloudRestore.sh script.
  40 fileNameBackupFileDir="nextcloud-filedir.tar.gz"
  41 fileNameBackupDataDir="nextcloud-datadir.tar.gz"
  42 fileNameBackupDb="nextcloud-db.sql"
  43
  44 # Function for error messages
  45 errorecho() { cat <<< "$@" 1>&2; }
  46
  47 #
  48 # Check for root
  49 #
  50 if [ "$(id -u)" != "0" ]
  51 then
  52         errorecho "ERROR: This script has to be run as root!"
  53         exit 1
  54 fi
  55
  56 #
  57 # Check if backup dir already exists
  58 #
  59 if [ ! -d "${backupdir}" ]
  60 then
  61         mkdir -p "${backupdir}"
  62 else
  63         errorecho "ERROR: The backup directory ${backupdir} already exists!"
  64         exit 1
  65 fi
  66
  67 #
  68 # Set maintenance mode
  69 #
  70 echo "Set maintenance mode for Nextcloud..."
  71 cd "${nextcloudFileDir}"
  72 sudo -u "${webserverUser}" php occ maintenance:mode --on
  73 cd ~
  74 echo "Done"
  75 echo
  76
  77 #
  78 # Stop webserver
  79 #
  80 echo "Stopping nginx..."
  81 service nginx stop
  82 echo "Done"
  83 echo
  84
  85 #
  86 # Backup file and data directory
  87 #
  88 echo "Creating backup of Nextcloud file directory..."
  89 tar -cpzf "${backupdir}/${fileNameBackupFileDir}" -C "${nextcloudFileDir}" .
  90 echo "Done"
  91 echo
  92
  93 echo "Creating backup of Nextcloud data directory..."
  94 tar -cpzf "${backupdir}/${fileNameBackupDataDir}"  -C "${nextcloudDataDir}" .
  95 echo "Done"
  96 echo
  97
  98 #
  99 # Backup DB
 100 #
 101 echo "Backup Nextcloud database..."
 102 mysqldump --single-transaction -h localhost -u "${dbUser}" -p"${dbPassword}" "${nextcloudDatabase}" > "${backupdir}/${fileNameBackupDb}"
 103 echo "Done"
 104 echo
 105
 106 #
 107 # Start webserver
 108 #
 109 echo "Starting webserver..."
 110 service nginx start
 111 echo "Done"
 112 echo
 113
 114 #
 115 # Disable maintenance mode
 116 #
 117 echo "Switching off maintenance mode..."
 118 cd "${nextcloudFileDir}"
 119 sudo -u "${webserverUser}" php occ maintenance:mode --off
 120 cd ~
 121 echo "Done"
 122 echo
 123
 124 #
 125 # Delete old backups
 126 #
 127 if [ ${maxNrOfBackups} != 0 ]
 128 then
 129         nrOfBackups=$(ls -l ${backupMainDir} | grep -c ^d)
 130
 131         if [  ${maxNrOfBackups} > ${nrOfBackups} ]
 132         then
 133                 echo "Removing old backups..."
 134                 ls -t ${backupMainDir} | tail -$(( nrOfBackups - maxNrOfBackups )) | while read dirToRemove; do
 135                 echo "${dirToRemove}"
 136                 rm -r ${backupMainDir}/${dirToRemove}
 137                 echo "Done"
 138                 echo
 139     done
 140         fi
 141 fi
 142
 143 echo
 144 echo "DONE!"
 145 echo "Backup created: ${backupdir}"