126 lines
3.1 KiB
Bash
Executable File
126 lines
3.1 KiB
Bash
Executable File
#!/bin/bash
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#
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# Bashup - A set of bash scripts for managing backups.
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# https://git.stack-source.com/msb/bashup
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# MIT License Copyright (c) 2021 Matthew Saunders Brown
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#
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# begin configurable vars
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#
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# retention vars
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retention_years=0;
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retention_months=3;
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retention_weeks=5;
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retention_days=7;
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# backup storage directory
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backup_storage_dir='/mnt/backups';
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# directories to be backed up by files
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backup_dirs=('/etc' '/home' '/srv' '/root' '/usr/local' '/var/www');
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# mysql config file that contains 'host' 'user' 'password' vars
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defaults_extra_file='/etc/mysql/debian.cnf';
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# list of mysql databases to skip
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exclusions=('information_schema' 'performance_schema' 'sys' 'wsrep');
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#
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# end configurable vars
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#
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# must be root, attempt sudo if need be
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if [ "${EUID}" -ne 0 ]; then
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exec sudo -u root --shell /bin/bash $0 $@
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fi
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# check for backup storage directory and mount if need be
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if [ -d $backup_storage_dir ]; then
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# check if backup_storage_dir is a mount in fstab
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grep -qs " $backup_storage_dir " /etc/fstab
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if [ $? -eq 0 ]; then
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# check if backup_storage_dir is already mounted
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grep -qs " $backup_storage_dir " /proc/mounts
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if [ $? -ne 0 ]; then
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# attempt to mount backups
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mount $backup_storage_dir
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# re-check for backups mount
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grep -qs " $backup_storage_dir " /proc/mounts
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if [ $? -ne 0 ]; then
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echo "ERROR: failed to mount $backup_storage_dir"
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exit 1
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fi
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fi
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fi
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else
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echo "ERROR: Backup storage dir ($backup_storage_dir) does not exist."
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exit 1
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fi
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# get todays date (backup dir name)
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today=$(date +%Y%m%d)
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# set existing_backups array
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existing_backups=($(ls $backup_storage_dir|grep -v lost+found))
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# if script is a *-backup-* script remove today from existing backups, if it exists. we do other checks avoid re-doing backups
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if [[ "$0" == *"-backup-"* ]];then
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if [[ " ${existing_backups[@]} " =~ " ${today} " ]]; then
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unset 'existing_backups[-1]';
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fi
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fi
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function bashup::set_retention_array () {
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declare -a retention_array
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# set retention days
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if [ $retention_days -gt 0 ]; then
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i="0"
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while [ $i -lt $retention_days ]; do
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DATE=`date --date="$i day ago" +%Y%m%d`
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retention_array[$DATE]="$DATE"
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i=$[$i+1]
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done
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fi
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# set retention weeks
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if [ $retention_weeks -gt 0 ]; then
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i="0"
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while [ $i -lt $retention_weeks ]; do
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i=$[$i+1]
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DATE=`date --date="sunday - $i week" +%Y%m%d`
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retention_array[$DATE]="$DATE"
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done
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fi
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# set retention months
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if [ $retention_months -gt 0 ]; then
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i="0"
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while [ $i -lt $retention_months ]; do
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DATE=`date --date="$i month ago" +%Y%m01`
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retention_array[$DATE]="$DATE"
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i=$[$i+1]
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done
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fi
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# set retention years
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if [ $retention_years -gt 0 ]; then
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i="0"
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while [ $i -lt $retention_years ]; do
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DATE=`date --date="$i year ago" +%Y0101`
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retention_array[$DATE]="$DATE"
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i=$[$i+1]
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done
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fi
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}
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function bashup::unmount_storage_dir () {
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# check if backup_storage_dir is mounted and unmount if so
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grep -qs " $backup_storage_dir " /proc/mounts
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if [ $? -eq 0 ]; then
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umount $backup_storage_dir
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fi
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}
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