hcoop-all-db-backup

   1 #!/bin/bash
   2
   3 #
   4 # This script backs up every database to its own file, gzipped.
   5 # docelic@hcoop.net, Tue Aug 28 13:38:26 EDT 2007
   6 #
   7
   8 BACKUP_ROOT=/srv/backup/database
   9 BACKUP_DAYS=7
  10
  11 if ! test -d "$BACKUP_ROOT"; then
  12         echo "Backup root directory '$BACKUP_ROOT' inaccessible."
  13         exit 1
  14 fi
  15
  16 MYSQL_DBS=`sudo -H mysql -Bse 'show databases' | xargs`
  17 echo "Mysql Databases are: $MYSQL_DBS"
  18 PGSQL_DBS=`sudo -u postgres psql template1 -tAc 'SELECT datname FROM pg_database WHERE datistemplate = false;' | xargs`
  19 echo "Postgres Databases are: $PGSQL_DBS"
  20
  21 # Delete oldest
  22 rm -rf "$BACKUP_ROOT/mysql.$BACKUP_DAYS"
  23 rm -rf "$BACKUP_ROOT/postgres-9.$BACKUP_DAYS"
  24
  25 # Rotate backup dirs
  26 for day in `seq $BACKUP_DAYS -1 1`; do
  27         to=".$day"
  28         let day_before=" $day - 1"
  29         if test "$day" = "1"; then
  30                 from=''
  31         else
  32                 from=".$day_before"
  33         fi
  34
  35         mv -f "$BACKUP_ROOT/mysql$from" "$BACKUP_ROOT/mysql$to" 2>/dev/null
  36         mv -f "$BACKUP_ROOT/postgres-9$from" "$BACKUP_ROOT/postgres-9$to" 2>/dev/null
  37 done
  38
  39 # backups should not be world-readable, mask all o permissions
  40 umask 0027
  41
  42 # Create current dump dirs
  43 mkdir --mode=770 "$BACKUP_ROOT/mysql" "$BACKUP_ROOT/postgres-9"
  44
  45 # Perform MYSQL backup
  46 for db in $MYSQL_DBS; do
  47         sudo -H mysqldump --single-transaction "$db" | pigz - > "$BACKUP_ROOT/mysql/$db.gz"
  48 done
  49
  50 # Perform PGSQL backup
  51 for db in $PGSQL_DBS; do
  52         sudo -H -u postgres pg_dump -Fc "$db" > "$BACKUP_ROOT/postgres-9/$db.pg"
  53 done