bashup/bashup-backup-mysql.sh
2021-04-22 15:03:50 -07:00

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#!/bin/bash
#
# Bashup - A set of bash scripts for managing backups.
# https://git.stack-source.com/msb/bashup
# MIT License Copyright (c) 2021 Matthew Saunders Brown
# load include file
source $(dirname $0)/bashup.sh
bashup::set_existing_backups
bashup::set_retention_array
# create backup for today
if [[ " ${retention_array[@]} " =~ " ${today} " ]]; then
# create backup (date) dir if it doesn't already exist
if [ ! -d "$backup_storage_dir/$today" ]; then
mkdir $backup_storage_dir/$today
fi
# only proceed if mysql has not already been backed up
if [[ ! -d $backup_storage_dir/$today/mysql ]]; then
mkdir $backup_storage_dir/$today/mysql
mysqladmin --defaults-extra-file=$defaults_extra_file refresh
# create array of all existing databases
databases=($(mysql --defaults-extra-file=$defaults_extra_file -E -e 'show databases;'|grep : |awk '{ print $2 }' |tr '\n' ' '));
for database in "${databases[@]}"; do
if [[ " ${exclusions[@]} " =~ " ${database} " ]]; then
# do nothing, db is in exclusions array
one=1;
else
mysqldump --defaults-extra-file=$defaults_extra_file --opt --quote-names --events --databases $database | gzip > $backup_storage_dir/$today/mysql/$database.sql.gz
fi
done
fi
fi
# remove expired backups
for existing_backup in "${existing_backups[@]}"; do
if [[ " ${retention_array[@]} " =~ " ${existing_backup} " ]]; then
# keep $existing_backup, do nothing
one=1;
else
if [[ -d $backup_storage_dir/$existing_backup/mysql ]]; then
rm -r $backup_storage_dir/$existing_backup/mysql
fi
if [ -z "$(ls -A $backup_storage_dir/$existing_backup)" ]; then
rm -r $backup_storage_dir/$existing_backup
fi
fi
done
bashup::unmount_storage_dir
exit 0