128 lines
2.9 KiB
Bash
Executable file
128 lines
2.9 KiB
Bash
Executable file
#!/bin/sh
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# Configuration
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# Files will be named BASE_DIR/PREFIXEbasenameSUFFIXE
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BASE_DIR="/var/backups/bdd"
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MYSQL_EXTRA_ARGS=""
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MYSQLDUMP_EXTRA_ARGS="--add-drop-table"
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PREFIXE="sauv_mysql_"
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SUFFIXE=_$( date +%Y%m%d-%H%M%S ).sql.gz
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NB_DAYS_BEFORE_DELETION="30"
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BASES_EXCLUDED="mysql
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information_schema
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performance_schema"
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# Small note for a backup of a random directory in crontab
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# test -d /var/backups/www && cd /var/www && tar -czf /var/backups/www/www_$( date +\%Y\%m\%d-\%H\%M\%S ).tar.gz ./ && find /var/backups/www -maxdepth 1 -name 'www_*' -mtime +10 -delete
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# Stop at first non-catched error
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set -e
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#
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# Help function
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#
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usage() {
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TMP_BASES_EXCLUDED="$( echo "$BASES_EXCLUDED" | tr '\n' " " )"
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cat <<EOF
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Usage :
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$0 [ -x mysql_extra_arg ] [ -X mysqldump_extra_args ] [ -d nb_days_before_deletion ] [ -B base_dir ] [ -p prefix ] [ -z -e base_excluded ] [ base base...]
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Example :
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$0 -e mysql -e information_schema -e performance_schema -d 10
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Default values :
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mysql_extra_args: "$MYSQL_EXTRA_ARGS" (for ex.: "--defaults-extra-file=/var/backup/my.cnf" )
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mysqldump_extra_args: "$MYSQLDUMP_EXTRA_ARGS" (for ex.: "--defaults-extra-file=/var/backup/my.cnf --add-drop-table" )
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nb_days_before_deletion : "$NB_DAYS_BEFORE_DELETION" (if <0 deactivate)
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base_dir : "$BASE_DIR"
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prefix : "$PREFIXE"
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base_excluded : "$TMP_BASES_EXCLUDED"
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base base ... : by default, take every base shown by SHOW DATABASES
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EOF
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}
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# Lower script priority
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renice -n 20 $$ >/dev/null 2>&1
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#
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# Parameters management
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#
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while getopts hd:B:p:ze: f; do
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case "$f" in
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'h')
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usage
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exit
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;;
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'd')
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NB_DAYS_BEFORE_DELETION="$OPTARG"
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;;
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'B')
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BASE_DIR="$OPTARG"
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;;
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'p')
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PREFIXE="$OPTARG"
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;;
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'z')
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BASES_EXCLUDED=""
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;;
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'e')
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if [ -z "$BASES_EXCLUDED" ]; then
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BASES_EXCLUDED="$OPTARG"
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else
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BASES_EXCLUDED="$( printf "%s\n%s" "$BASES_EXCLUDED" "$OPTARG" )"
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fi
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;;
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'x')
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MYSQL_EXTRA_ARGS="$OPTARG"
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;;
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'X')
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MYSQLDUMP_EXTRA_ARGS="$OPTARG"
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;;
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esac
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done
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shift $( expr $OPTIND - 1 )
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# Initial checks
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if [ ! -d "$BASE_DIR" ]; then
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echo "ERREUR : répertoire de sauvegarde inexistant : $BASE_DIR ." >&2
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exit 1
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fi
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if [ -z "$@" ]; then
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# Listing des bases à sauvegarder
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BASES="$( mysql $MYSQL_EXTRA_ARGS -Bse "SHOW DATABASES;" )"
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else
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BASES="$@"
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fi
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# Loop on bases' names
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# We try to have a little fun here : MySQL can be quite laxist
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# on base names, so we use <newline> as a separator. Quite a gymnastic
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# ensue :)
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printf "%s\n" "$BASES" | while read BASENAME; do
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IFS="
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"
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for EXCLUDED_NAME in $BASES_EXCLUDED; do
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if [ "$BASENAME" = "$EXCLUDED_NAME" ]; then
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unset IFS
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continue 2
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fi
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done
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unset IFS
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mysqldump $MYSQL_EXTRA_ARGS "$BASENAME" | gzip -c > "$BASE_DIR/$PREFIXE$BASENAME$SUFFIXE"
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done
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# Deletion of old backups
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if [ "$NB_DAYS_BEFORE_DELETION" -gt "0" ]; then
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find $BASE_DIR -maxdepth 1 -name "$PREFIXE*" -mtime +$NB_DAYS_BEFORE_DELETION -delete
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fi
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