lsb_release -a

rpm -qa|grep -i mysql

rpm -ev MySQL-client-5.5.25a-1.rhel5 如果提示依賴錯誤，增加--nodeps
find / -name mysql
rm -rf /var/lib/mysql
rm -rf /var/lib/mysql
rm -rf /usr/lib64/mysql
rm -rf /etc/my.cnf
rpm -qa|grep -i mysql

wget -c https://cdn.mysql.com//Downloads/MySQL-5.7/

mysql-community-client-5.7.18-1.el6.x86_64.rpm
mysql-community-common-5.7.18-1.el6.x86_64.rpm
mysql-community-devel-5.7.18-1.el6.x86_64.rpm
mysql-community-embedded-5.7.18-1.el6.x86_64.rpm
mysql-community-embedded-devel-5.7.18-1.el6.x86_64.rpm
mysql-community-libs-5.7.18-1.el6.x86_64.rpm
mysql-community-libs-compat-5.7.18-1.el6.x86_64.rpm
mysql-community-server-5.7.18-1.el6.x86_64.rpm
mysql-community-test-5.7.18-1.el6.x86_64.rpm

yum install gcc gcc-c++ ncurses-devel perl

wget http://mirror.centos.org/centos/6/os/x86_64/Packages/numactl-2.0.9-2.el6.x86_64.rpm

＃這個包在安裝server提示libnuma.so.1

rpm -ivh mysql-community-common-5.7.18-1.el6.x86_64.rpm

rpm -ivh mysql-community-libs-5.7.18-1.el6.x86_64.rpm

rpm -ivh mysql-community-client-5.7.18-1.el6.x86_64.rpm

rpm -ivh mysql-community-server-5.7.18-1.el6.x86_64.rpm

service mysqld start

grep 'temporary password' /var/log/mysqld.log

mysql -uroot -p
ALTER USER 'root'@'localhost' IDENTIFIED BY '12345';

GRANT ALL PRIVILEGES ON root.* TO 'root'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION;

FLUSH PRIVILEGES 

11. 定期自動備份

#!/bin/bash
db_user="root"
db_passwd="123456"
db_name="test_db"
#進入備份目錄將之前的移動到old目錄
cd /home/backup/bakmysql
echo "you are in bakmysql directory now"
mv test_db* /home/backup/bakmysqlold
echo "Old databases are moved to bakmysqlold folder"
#備份目錄
backup_dir="/home/backup/bakmysql"
#時間格式
time=$(date +"%Y-%m-%d")
#mysql 備份的命令，注意有空格和沒有空格
mysqldump -u$db_user -p$db_passwd $db_name  > "$backup_dir/$db_name"-"$time.sql"
echo "your database backup successfully completed"
#這裡將7天之前的備份檔案刪掉
SevenDays=$(date -d -7day +"%Y-%m-%d")
if [ -f /home/backup/bakmysqlold/pashanhu-$SevenDays.sql ]
then
rm -rf /home/backup/bakmysqlold/pashanhu-$SevenDays.sql
echo "you have delete 7days ago bak sql file "
else
echo "7days ago bak sql file not exist "
echo "bash complete"
fi

然後通過下面命令將腳步加入系統的計劃任務

touch /home/bakmysql.sh
vi /home/bakmysql.sh (上面的指令碼)
chmod -x /home/bakmysql
 mkdir /home/backup
mkdir /home/backup/bakmysqlold
mkdir /home/backup/bakmysql

檢查有沒安裝crond,如果沒有，先安裝

yum -y install vixie-cron
yum -y install crontabs

啟動服務 :service crond start

在CentOS系統中加入開機自動啟動: chkconfig --level 345 crond on

crontab -e

0 2 * * * /home/bakmysql.sh

儲存退出以後就可以了。

也許需要重啟crontab  啟用命令：/sbin/service crond restart

後期更改~結果如下

12. 匯出匯入

匯出：

/usr/local/mysql/bin/mysqldump -u root -p123456 dbname > /bak/dbname.sql

進入mysql中建立一個數據庫 dbname

/usr/local/mysql/bin/mysql -u root -p123456 dbname < /bak/dbname.sql

-----------------------------------------------------------------------------------------------------------------

1.mongodb

建立獨立使用者：
mongo
use ex8
db.createUser(
     {
       user:"ex8",
       pwd:"[email protected]",
       roles:[{role:"dbOwner",db:"ex8"}]
     }
  )

測試登入
show users

mongo 127.0.0.1/ex8 -u ex8 -p [email protected]

修改mongo使用者密碼

db.changeUserPassword('ex8','12345678');

mongodb資料庫恢復:
mongodump -h 192.168.183.140 --port 27017 -u ex8 -p 12345678 -d ex8 -o  /home/tools   //匯出ex8庫到tools下
mongorestore -h 127.0.0.1 --port 27017 -u ex8 -p 12345678 -d ex8  /home/tools/ex8//匯入ex8庫

2.mongodb自動備份：

#touch /home/bakmongodb.sh

#vi /home/bakmongodb.sh

v_date=$(date '+%Y%m%d%H%M%S')
/home/mongodb/bin/mongoexport  -d ex8 -u ex8 -p 12345678 -c contentMongoEO  -o /home/backup/mongo/mongo-$v_date.dat
gzip /home/backup/mongo/mongo-$v_date.dat
find /home/backup/mongo/ -name "mongo-*" -mtime +6 -exec rm -rf {} \;

#chmod -R 777 /home/bakmongodb.sh

#service crond start

#chkconfig --level 345 crond on

#crontab -e

0 2 * * * /home/bakmysql.sh