MySQL

The master-slave configuration of the MySQL server, which allows for read-write separation, or can be recovered from the standby after the main library has been hung out.Requires two machines, install MySQL, two machines in a connected LAN, can be

Installing xtrabackup using RPM packages# # Install dependent packages Yum Install Perl Perl Perl perl-dbd--ivh libev4-4.15-7.1x86_64.rpm##installation Percona-- IVH percona-xtrabackup--2.4. 4-1. el6.x86_64.rpmCreate a MySQL account for the backup

It's not very good, I hope you can have a lot of spit >__MySQL Master-Slave Summary One, principle (1) Process a---change data---> Record bin_log---> Transfer (upload)----> B---> Repl_log (record their own log repl_log )----> Change data (Changing

Title:It is generally considered that the data/mysql/directory is missing from MySQL directory in 5.7, which causes the failure to start;Solution:Re-install 5.6 can be;1. Remove the services installed in 5.7:Run to Mysql\bin directory: Mysqld-remove;

After the cmd command to enter the database, you need to manually do some operations on the databaseCreate a database plus a semicolonMySQL>Createdatabase myfirstdatabase;View the database you created plus s and semicolonsMySQL>show Databases;Select

Some time ago because of misoperation deleted a table of a few data, embarrassed, just this week is free to toss the next data backup knowledge, now the MySQL data backup related practice and experience summarized as follows:One. Use the mysqldump

The first thing to understand is that the storage engine in MySQL database loyalty is table-based, not database-based.Tell them the difference:The InnoDB storage engine, primarily for OLTP (online Transaction processing, on-line transaction

A colleague from work today is responsible for a MySQL database with a CPU utilization of 100% and a server top viewCpu (s): 95.9%us, 4.0%sy, 0.0%ni, 0.0%id, 20.0%wa, 0.0%hi, 0.0%si, 0.0%stAs the maintenance of Oracle has been done, not familiar

MySQL add user, new database, user authorization, delete user, change password (note that each line followed by A; indicates that a command statement ends):1. Create a new user1.1 Log in to MySQL:@>mysql-u root-p@> Password1.2 Create User:mysql>

/***================================================================* Mysql.class.php database Operation class, responsible for the database of the underlying operations* @author Wang Suping* @copyright Wisdom Podcast PHP Academy 2006-2013* @version

BackgroundMaster-Slave Switching is a necessary step for a highly available MySQL architecture (i.e., use does not occur and is prepared). Generally set to double m (M1, M2), assuming the current state is write M1, and M2 read-only, the approximate

:https://raw.githubusercontent.com/major/MySQLTuner-perl/master/mysqltuner.plDirect usewget https://raw.githubusercontent.com/major/MySQLTuner-perl/master/mysqltuner.plYou can download it.chmod +x mysqltuner.pl./mysqltuner.pl then enter the user

Run on the machine where MySQL is installed:1, d:\mysql\bin\>mysql-h localhost-u root//This should allow access to the MySQL server2, Mysql>grant all privileges on * * to ' root ' @ '% ' with GRANT OPTION//give any host access to data3. Mysql>flush

First you need to download the RPM:wget http://repo.mysql.com//mysql57-community-release-el7-9.noarch.rpmHow did this address come from?Open: http://dev.mysql.com/downloads/repo/yum/UseUname-rCan view the El version of the current system, here I

Since Yum installs MySQL, the database's data directory is under/var/lib by default and needs to be moved to the/data partition for data security reasons. The steps are as follows:One, close Apache and MySQL.Copy the code code as follows:Service

CentOS 7 's Yum source does not appear to be properly installed when MySQL mysql-sever file, need to go to the official web

Problem: password forgot input error case, login prompt:error 1045 (28000): Access denied for userCheck the online solution there is a My.ini file to add skip-grant-tables This paragraph of the text of the scheme. My version of mysql-5.6.24 is free

Xtrabackup is an open source software developed by Percona, which is an open source alternative to the InnoDB hot standby tool Ibbackup (paid commercial software). Xtrabackup consists of parts: Xtrabackup and Innobackupex, where xtrabackup tools are

STEP1: Check whether the system comes with the installation of MySQL# yum list installed | grep mysqlSTEP2: Delete the system's own MySQL and its dependent commands:# yum -y remove mysql-libs.x86_64STEP3: Add the RPM Source to CentOS and select a

Front-end databases support many table operations and front-end databases* Directory [1] Preparation [2] multi-Table update [3] Two-Step update [4] Before connecting to [5] infinitely-level tables In the previous blog, we introduced subqueries and