Editing CDIL-Table vise Backup for Mysql / Maria DB

[[category:CDIL]]

Reference : https://www.howtoforge.com/mysql-backup-table-by-table-backup-with-auto-rotation-for-easy-restoration-of-partial-full-database

Crontab -l 

 10 1 * * * /sbin/maria_tablevise_bkp.sh >1 /dev/null >2 /dev/null

cat /sbin/maria_tablevise_bkp.sh

 #!/bin/bash
 # Database credentials
 DB_USER=root
 #Please append password in the xxxxx section below, note that there is
 # no space between -p and xxxxx
 DB_PASS="-pSystem_0099?"
 # Get list of Databases except the pid file
 DBS_LIST=$(echo "show databases;"|mysql -u $DB_USER $DB_PASS -N)
 # Log file
 BAKUP_LOG=/bkp/backup_maria_tables/log/db-backup.log
 # Backup Base directory
 BASE_BAK_FLDR=/bkp/backup_maria_tables/db
 # Backup rotation period.
 RM_FLDR_DAYS="+30"
 # From here, only edit if you know what you are doing.
 index=0
 # Check if we can connect to the mysql server; otherwise die
 #if [ ! "$(id -u -n)" = "mysql" ]; then
 #        echo -e "Error:: $0 : Only user 'mysql' can run this script"
 #        exit 100
 #fi
 PING=$(mysqladmin ping -u $DB_USER $DB_PASS 2>/dev/null)
 if [ "$PING" != "mysqld is alive" ]; then
        echo "Error:: Unable to connected to MySQL Server, exiting !!"
        exit 101
 fi
 # Backup process starts here.
 # Flush logs prior to the backup.
 mysql -u $DB_USER $DB_PASS -e "FLUSH LOGS"
 # Loop through the DB list and create table level backup,
 # applying appropriate option for MyISAM and InnoDB tables.
 for DB in $DBS_LIST; do
    DB_BKP_FLDR=$BASE_BAK_FLDR/$(date +%d-%m-%Y)/$DB
    [ ! -d $DB_BKP_FLDR ]  && mkdir -p $DB_BKP_FLDR
    # Get the schema of database with the stored procedures.
    # This will be the first file in the database backup folder
    mysqldump -u $DB_USER $DB_PASS -R -d --single-transaction $DB | \
            gzip -c > $DB_BKP_FLDR/000-DB_SCHEMA.sql.gz
    index=0
    #Get the tables and its type. Store it in an array.
    table_types=($(mysql -u $DB_USER $DB_PASS -e "show table status from $DB" | \
            awk '{ if ($2 == "MyISAM" || $2 == "InnoDB") print $1,$2}'))
    table_type_count=${#table_types[@]}
    # Loop through the tables and apply the mysqldump option according to the table type
    # The table specific SQL files will not contain any create info for the table schema.
    # It will be available in SCHEMA file
    while [ "$index" -lt "$table_type_count" ]; do
        START=$(date +%s)
        TYPE=${table_types[$index + 1]}
        table=${table_types[$index]}
        echo -en "$(date) : backup $DB : $table : $TYPE "
        if [ "$TYPE" = "MyISAM" ]; then
            DUMP_OPT="-u $DB_USER $DB_PASS $DB --no-create-info --tables "
        else
            DUMP_OPT="-u $DB_USER $DB_PASS $DB --no-create-info --single-transaction --tables"
        fi
        mysqldump  $DUMP_OPT $table |gzip -c > $DB_BKP_FLDR/$table.sql.gz
        index=$(($index + 2))
        echo -e " - Total time : $(($(date +%s) - $START))\n"
    done
 done
 # Rotating old backup. according to the 'RM_FLDR_DAYS'
 if [ ! -z "$RM_FLDR_DAYS" ]; then
    echo -en "$(date) : removing folder : "
    find $BASE_BAK_FLDR/ -maxdepth 1 -mtime $RM_FLDR_DAYS -type d -exec rm -rf {} \;
    echo
 fi


Backup is stored in 

 '''/bkp/backup_maria_tables/db/{date}/{db name}/{table name}.sql.gz'''