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centos7 xtrabackup mysql（8）增量备份 脚本（2）
Shell 基本运算符
https://www.runoob.com/linux/linux-shell-basic-operators.html
https://blog.csdn.net/weixin_30823001/article/details/96417008
https://blog.csdn.net/weixin_35985795/article/details/113379060
测试用脚本
cat script_xtrabackup.sh
#!/bin/sh . /etc/profile user=root password=1234aA~1 backup_dir=/data/ gzip_dir=$backup_dir log_dir=$backup_dir/log # 全备是在一周的第几天 full_backup_week_day=1 error_log= # 备份日期 backup_date=`date +%Y%m%d` # 备份时间 backup_time=`date +%H-%M-%S` # 备份时的周几 backup_week_day=`date +%u` mkdir -p $backup_dir mkdir -p $log_dir log_file=${backup_dir}/log/backup.log log_x_file=${backup_dir}/log/backup_xtra.log x_file_size=`ls -l $log_x_file | awk '{print $5}'` num_x_file_size=$((x_file_size)) echo $num_x_file_size if [ $num_x_file_size -gt 9000000 ];then echo "" > $log_x_file fi echo $backup_date echo $backup_time echo $backup_week_day let delta=backup_week_day-full_backup_week_day echo $delta echo "" echo "" echo '------------------ start ---------------------'${backup_date} ${backup_time} >> $log_file if [ "$delta" -eq 0 ] then # 全量备份 echo '全量备份 delta=$delta' >> ${log_file} mkdir -p $backup_dir/backup$backup_date if [ -e "$backup_dir/backup$backup_date/full_backup" ];then echo "full_backup exist " >> ${log_file} exit 0 fi xtrabackup --backup --target-dir=$backup_dir/backup$backup_date/full_backup --user=$user --password=$password --socket=/opt/datadir/mysql/mysql.sock >> ${log_x_file} 2>&1 elif [ "$delta" -eq 1 ] then echo "" >> ${log_file} echo "" >> ${log_file} echo "第一次增量备份 delta=$delta" >> ${log_file} date_last=$(date -d "-1 day" '+%Y%m%d') echo $date_last >> ${log_file} if [ -e "$backup_dir/backup${date_last}/inc_1_backup" ];then echo "inc_1_backup exist " >> ${log_file} exit 0 fi if [ ! -e "$backup_dir/backup${date_last}/full_backup" ];then echo "full_backup not exist " >> ${log_file} exit 0 fi xtrabackup --backup --target-dir=$backup_dir/backup${date_last}/inc_1_backup --incremental-basedir=$backup_dir/backup${date_last}/full_backup --user=root --password=1234aA~1 --socket=/opt/datadir/mysql/mysql.sock >> ${log_x_file} 2>&1 elif [ "$delta" -gt 0 ] then echo "" >> ${log_file} echo "" >> ${log_file} echo "delta大于0 增量备份 delta=$delta" >> ${log_file} date_last=$(date -d "-${delta} day" '+%Y%m%d') echo $date_last >> ${log_file} if [ -e "$backup_dir/backup${date_last}/inc_${delta}_backup" ];then echo "inc_${delta}_backup exist " >> ${log_file} exit 0 fi if [ ! -e "$backup_dir/backup${date_last}/inc_$((delta-1))_backup" ];then echo "$backup_dir/backup${date_last}/inc_$((delta-1))_backup" echo "inc_$((delta-1))_backup not exist " >> ${log_file} exit 0 fi xtrabackup --backup --target-dir=$backup_dir/backup${date_last}/inc_${delta}_backup --incremental-basedir=$backup_dir/backup${date_last}/inc_$((delta-1))_backup --user=root --password=1234aA~1 --socket=/opt/datadir/mysql/mysql.sock >> ${log_x_file} 2>&1 else echo "" >> ${log_file} echo "" >> ${log_file} echo "delta小于0 增量备份 delta=$delta" >> ${log_file} let num=7+$delta echo 'num ='${num} >> ${log_file} date_last=$(date -d "-${num} day" '+%Y%m%d') echo $date_last >> ${log_file} echo $((num-1)) >> ${log_file} if [ -e "$backup_dir/backup${date_last}/inc_${num}_backup" ];then echo "inc_${num}_backup exist " >> ${log_file} exit 0 fi if [ ! -e "$backup_dir/backup${date_last}/inc_$((num-1))_backup" ];then echo "inc_$((num-1))_backup not exist " >> ${log_file} exit 0 fi xtrabackup --backup --target-dir=$backup_dir/backup${date_last}/inc_${num}_backup --incremental-basedir=$backup_dir/backup${date_last}/inc_$((num-1))_backup --user=root --password=1234aA~1 --socket=/opt/datadir/mysql/mysql.sock >> ${log_x_file} 2>&1 fi #sudo xtrabackup --backup --target-dir=/data//backup20240729/inc_3_backup --incremental-basedir=/data//backup20240729/inc_1_backup --user=root --password=1234aA~1 --socket=/opt/datadir/mysql/mysql.sock 恢复提示语句 脚本
cat create_restore_file.sh
#!/bin/sh mysql_dir=/opt/datadir/ backup_dir=/data/ date2="20080203" date_store=`date -d "$date2" +%s` echo $date_store file_store='' for file in $backup_dir/* do echo $file if [ -d "$file" ];then echo "$file is a dir" dir_name=${file##*/} echo "file name = $dir_name" if [[ $dir_name == backup* ]];then echo "dir_name= $dir_name" substring=${dir_name:6:8} echo "substring=$substring" date1=`date -d "$substring" +%s` echo "$date1" if [ $date_store -lt $date1 ];then date_store=$date1 echo "hello $date_store" file_store=$file echo "$file_store" fi fi fi done num='0' for file in $file_store/* do echo $file if [ -d "$file" ];then dir_name=${file##*/} echo "file name = $dir_name" if [[ $dir_name == inc* ]];then echo "dir_name= $dir_name" substring=${dir_name:4:1} echo "substring=$substring" if [ $num -lt $substring ];then num=$substring fi fi fi done echo "num= $num" echo "sudo systemctl stop mysqld" > ~/restore_sql.txt echo "sudo cp -r ${mysql_dir}/mysql ${mysql_dir}/bak_mysql" >> ~/restore_sql.txt echo "sudo rm -rf ${mysql_dir}/mysql/*" >> ~/restore_sql.txt echo "sudo xtrabackup --prepare --apply-log-only --target-dir=$file_store/full_backup" >> ~/restore_sql.txt cnt=$((num)) echo "cnt = $cnt" if [ $num -gt '0' ];then for((i=1;i<$cnt;i++)); do echo "xtrabackup --prepare --apply-log-only --target-dir=$file_store/full_backup --incremental-dir=$file_store/inc_${i}_backup" >> ~/restore_sql.txt done echo "xtrabackup --prepare --target-dir=$file_store/full_backup --incremental-dir=$file_store/inc_${cnt}_backup" >> ~/restore_sql.txt fi echo "sudo xtrabackup --copy-back --target-dir=$file_store/full_backup" >> ~/restore_sql.txt echo "sudo chown -R mysql.mysql ${mysql_dir}/mysql/*" >> ~/restore_sql.txt echo "sudo systemctl restart mysqld" >> ~/restore_sql.txt 