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Bash Script to backup all MySQL databases
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| #!/bin/bash | |
| #============================================================================== | |
| #TITLE: mysql_backup.sh | |
| #DESCRIPTION: script for automating the daily mysql backups on development computer | |
| #AUTHOR: tleish | |
| #DATE: 2013-12-20 | |
| #VERSION: 0.4 | |
| #USAGE: ./mysql_backup.sh | |
| #CRON: | |
| # example cron for daily db backup @ 9:15 am | |
| # min hr mday month wday command | |
| # 15 9 * * * /Users/[your user name]/scripts/mysql_backup.sh | |
| #RESTORE FROM BACKUP | |
| #$ gunzip < [backupfile.sql.gz] | mysql -u [uname] -p[pass] [dbname] | |
| #============================================================================== | |
| # CUSTOM SETTINGS | |
| #============================================================================== | |
| # directory to put the backup files | |
| BACKUP_DIR=/Users/[your user name]/backup | |
| # MYSQL Parameters | |
| MYSQL_UNAME=root | |
| MYSQL_PWORD= | |
| # Don't backup databases with these names | |
| # Example: starts with mysql (^mysql) or ends with _schema (_schema$) | |
| IGNORE_DB="(^mysql|_schema$)" | |
| # include mysql and mysqldump binaries for cron bash user | |
| PATH=$PATH:/usr/local/mysql/bin | |
| # Number of days to keep backups | |
| KEEP_BACKUPS_FOR=30 #days | |
| #============================================================================== | |
| # METHODS | |
| #============================================================================== | |
| # YYYY-MM-DD | |
| TIMESTAMP=$(date +%F) | |
| function delete_old_backups() | |
| { | |
| echo "Deleting $BACKUP_DIR/*.sql.gz older than $KEEP_BACKUPS_FOR days" | |
| find $BACKUP_DIR -type f -name "*.sql.gz" -mtime +$KEEP_BACKUPS_FOR -exec rm {} \; | |
| } | |
| function mysql_login() { | |
| local mysql_login="-u $MYSQL_UNAME" | |
| if [ -n "$MYSQL_PWORD" ]; then | |
| local mysql_login+=" -p$MYSQL_PWORD" | |
| fi | |
| echo $mysql_login | |
| } | |
| function database_list() { | |
| local show_databases_sql="SHOW DATABASES WHERE \`Database\` NOT REGEXP '$IGNORE_DB'" | |
| echo $(mysql $(mysql_login) -e "$show_databases_sql"|awk -F " " '{if (NR!=1) print $1}') | |
| } | |
| function echo_status(){ | |
| printf '\r'; | |
| printf ' %0.s' {0..100} | |
| printf '\r'; | |
| printf "$1"'\r' | |
| } | |
| function backup_database(){ | |
| backup_file="$BACKUP_DIR/$TIMESTAMP.$database.sql.gz" | |
| output+="$database => $backup_file\n" | |
| echo_status "...backing up $count of $total databases: $database" | |
| $(mysqldump $(mysql_login) $database | gzip -9 > $backup_file) | |
| } | |
| function backup_databases(){ | |
| local databases=$(database_list) | |
| local total=$(echo $databases | wc -w | xargs) | |
| local output="" | |
| local count=1 | |
| for database in $databases; do | |
| backup_database | |
| local count=$((count+1)) | |
| done | |
| echo -ne $output | column -t | |
| } | |
| function hr(){ | |
| printf '=%.0s' {1..100} | |
| printf "\n" | |
| } | |
| #============================================================================== | |
| # RUN SCRIPT | |
| #============================================================================== | |
| delete_old_backups | |
| hr | |
| backup_databases | |
| hr | |
| printf "All backed up!\n\n" |
Is possible to modify this script to only backup databases that have data, to avoid have files with 0kb from databases with no data?
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Thanks. I'd figured this out but forgot to post back.