基础
创建
create database database_name;
CREATE USER 'newuser'@'localhost' IDENTIFIED BY 'password';
GRANT ALL PRIVILEGES ON database_name.* TO 'newuser'@'localhost';
FLUSH PRIVILEGES;
修改密码
ALTER USER 'username'@'localhost' IDENTIFIED BY 'newpassword';
备份
#!/bin/bash
USER=""
PASSWORD=""
mkdir MySQL_Backup_`date +%Y%m%d`
# for i in `mysql -u $USER -p$PASSWORD -e "SHOW DATABASES;" | tr -d "| " | grep -v Database`
for i in `mysql -B -N -e "show databases" -u${USER} -p${PASSWORD}|xargs`
do
if [ $i != "information_schema" ] && [ "$i" != "sys" ] && [ "$i" != "performance_schema" ] && [ "$i" != _* ]
then
echo "Dumping database: $i"
mysqldump -u${USER} -p${PASSWORD} ${i} > MySQL_Backup_`date +%Y%m%d`/${i}.sql
fi
done
zip -r MySQL_Backup_`date +%Y%m%d`.zip MySQL_Backup_`date +%Y%m%d`
#!/bin/bash
# 保存备份个数，备份31天数据
number=31
# 备份保存路径
backup_dir=/root/mysqlbackup
# 日期
dd=`date +%Y-%m-%d-%H-%M-%S`
# 备份工具
tool=mysqldump
# 用户名
username=root
# 密码
password=TankB214
# 将要备份的数据库
database_name=edoctor
# 如果文件夹不存在则创建
if [ ! -d $backup_dir ];
then
mkdir -p $backup_dir;
fi
# 简单写法 mysqldump -u root -p123456 users > /root/mysqlbackup/users-$filename.sql
$tool -u $username -p$password $database_name > $backup_dir/$database_name-$dd.sql
# 写创建备份日志
echo "create $backup_dir/$database_name-$dd.dupm" >> $backup_dir/log.txt
# 找出需要删除的备份
delfile=`ls -l -crt $backup_dir/*.sql | awk '{print $9 }' | head -1`
# 判断现在的备份数量是否大于$number
count=`ls -l -crt $backup_dir/*.sql | awk '{print $9 }' | wc -l`
if [ $count -gt $number ]
then
# 删除最早生成的备份，只保留number数量的备份
rm $delfile
# 写删除文件日志
echo "delete $delfile" >> $backup_dir/log.txt
fi