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-18-04-lts-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=$(date +"%Y%m%d_%H%M%S")
  18 # TODO: The directory where you store the Nextcloud backups
  19 backupMainDir="/mnt/Share/NextcloudBackups/"
  20 # The actual directory of the current backup - this is a subdirectory of the main directory above with a timestamp
  21 backupdir="${backupMainDir}/${currentDate}/"
  22 # TODO: The directory of your Nextcloud installation (this is a directory under your web root)
  23 nextcloudFileDir="/var/www/nextcloud"
  24 # TODO: The directory of your Nextcloud data directory (outside the Nextcloud file directory)
  25 # If your data directory is located under Nextcloud's file directory (somewhere in the web root), the data directory should not be a separate part of the backup
  26 nextcloudDataDir="/var/nextcloud_data"
  27 # TODO: The service name of the web server. Used to start/stop web server (e.g. 'service <webserverServiceName> start')
  28 webserverServiceName="nginx"
  29 # TODO: Your Nextcloud database name
  30 nextcloudDatabase="nextcloud_db"
  31 # TODO: Your Nextcloud database user
  32 dbUser="nextcloud_db_user"
  33 # TODO: The password of the Nextcloud database user
  34 dbPassword="mYpAsSw0rd"
  35 # TODO: Your web server user
  36 webserverUser="www-data"
  37 # TODO: The maximum number of backups to keep (when set to 0, all backups are kept)
  38 maxNrOfBackups=0
  39
  40 # File names for backup files
  41 # If you prefer other file names, you'll also have to change the NextcloudRestore.sh script.
  42 fileNameBackupFileDir="nextcloud-filedir.tar.gz"
  43 fileNameBackupDataDir="nextcloud-datadir.tar.gz"
  44 fileNameBackupDb="nextcloud-db.sql"
  45
  46 # Function for error messages
  47 errorecho() { cat <<< "$@" 1>&2; }
  48
  49 #
  50 # Check for root
  51 #
  52 if [ "$(id -u)" != "0" ]
  53 then
  54         errorecho "ERROR: This script has to be run as root!"
  55         exit 1
  56 fi
  57
  58 #
  59 # Check if backup dir already exists
  60 #
  61 if [ ! -d "${backupdir}" ]
  62 then
  63         mkdir -p "${backupdir}"
  64 else
  65         errorecho "ERROR: The backup directory ${backupdir} already exists!"
  66         exit 1
  67 fi
  68
  69 #
  70 # Set maintenance mode
  71 #
  72 echo "Set maintenance mode for Nextcloud..."
  73 cd "${nextcloudFileDir}"
  74 sudo -u "${webserverUser}" php occ maintenance:mode --on
  75 cd ~
  76 echo "Done"
  77 echo
  78
  79 #
  80 # Stop web server
  81 #
  82 echo "Stopping web server..."
  83 service "${webserverServiceName}" stop
  84 echo "Done"
  85 echo
  86
  87 #
  88 # Backup file and data directory
  89 #
  90 echo "Creating backup of Nextcloud file directory..."
  91 tar -cpzf "${backupdir}/${fileNameBackupFileDir}" -C "${nextcloudFileDir}" .
  92 echo "Done"
  93 echo
  94
  95 echo "Creating backup of Nextcloud data directory..."
  96 tar -cpzf "${backupdir}/${fileNameBackupDataDir}"  -C "${nextcloudDataDir}" .
  97 echo "Done"
  98 echo
  99
 100 #
 101 # Backup DB
 102 #
 103 echo "Backup Nextcloud database..."
 104 mysqldump --single-transaction -h localhost -u "${dbUser}" -p"${dbPassword}" "${nextcloudDatabase}" > "${backupdir}/${fileNameBackupDb}"
 105 echo "Done"
 106 echo
 107
 108 #
 109 # Start web server
 110 #
 111 echo "Starting web server..."
 112 service "${webserverServiceName}" start
 113 echo "Done"
 114 echo
 115
 116 #
 117 # Disable maintenance mode
 118 #
 119 echo "Switching off maintenance mode..."
 120 cd "${nextcloudFileDir}"
 121 sudo -u "${webserverUser}" php occ maintenance:mode --off
 122 cd ~
 123 echo "Done"
 124 echo
 125
 126 #
 127 # Delete old backups
 128 #
 129 if (( ${maxNrOfBackups} != 0 ))
 130 then
 131         nrOfBackups=$(ls -l ${backupMainDir} | grep -c ^d)
 132
 133         if (( ${nrOfBackups} > ${maxNrOfBackups} ))
 134         then
 135                 echo "Removing old backups..."
 136                 ls -t ${backupMainDir} | tail -$(( nrOfBackups - maxNrOfBackups )) | while read dirToRemove; do
 137                 echo "${dirToRemove}"
 138                 rm -r ${backupMainDir}/${dirToRemove}
 139                 echo "Done"
 140                 echo
 141     done
 142         fi
 143 fi
 144
 145 echo
 146 echo "DONE!"
 147 echo "Backup created: ${backupdir}"