Shulou(Shulou.com)06/01 Report--

1. Download the installation package

Wget https://cdn.mysql.com//Downloads/MySQL-8.0/mysql-8.0.18-el7-x86_64.tar.gz

2. Delete the system with rpm-qa | grep mysqlrpm-qa | grep mariadbrpm-e-- nodeps mariadb-libs-5.5.60-1.el7_5.x86_64

3. Modify the configuration file

Cat / etc/ my.cnf [MySQL] default-character-set=utf8 [mysqld] skip-name-resolveport = 3306basedir=/usr/local/mysqldatadir=/usr/local/mysql/datamax_connections=200character-set-server=utf8default-storage-engine=INNODBlower_case_table_names=1max_allowed_packet=16Mlog-bin=master-bin # master is master-bin,slave is the slave-binserver-id=1 # master for the first slave2gtidhands modepieces for one for cephalopause gtidholders considering one Nbinlogically checksummed none

4. Initialize the database

Groupadd mysqluseradd-r-g mysql- s / bin/false mysqlcd / usr/localtar xvf mysql-8.0.18-el7-x86_64.tar.gzln-s mysql-8.0.18-el7-x86_64 mysqlcd mysqlmkdir mysql-fileschown mysql:mysql mysql-fileschmod 750mysql-filesbin/mysqld-initialize-user=mysqlbin/mysql_ssl_rsa_setupbin/mysqld_safe-user=mysql & cp support-files/mysql.server / etc/init.d/mysql.server

Remember the random password of the database

# close command

Bin/mysqladmin-u root-p shutdown

# start command

Bin/mysqld_safe-- user=mysql &

5. Set environment variables:

Cat / etc/profile.d/msyqlMYSQL_HOME=/usr/local/mysql/export PATH=$PATH:$MYSQL_HOME/bin

6. Modify the random password:

Mysql-u root-p # enter the password that initializes the randomly generated

ALTER USER 'root'@'localhost' IDENTIFIED BY' hello123'

Show master status; # View master status

7. Create a user for master-slave replication

CREATE USER 'econage'@'%' IDENTIFIED BY' hello123'

GRANT REPLICATION SLAVE ON *. * TO econage@'%'

In the previous version of # mysql8, the encryption rule is mysql_native_password, but after mysql8, the encryption rule is caching_sha2_password, which restores the mysql login password encryption rule to mysql_native_password. Otherwise, the error will be reported as follows

# error connecting to master 'econage@192.168.0.56:3306'-retry-time: 60 retries: 1 message: Authentication plugin' caching_sha2_password' reported error: Authentication requires secure connection.

ALTER USER 'econage'@'%' IDENTIFIED WITH mysql_native_password BY' hello123'; # just add this command

FLUSH PRIVILEGES

8. Check whether the connection is correct:

Mysql-ueconage-phello123-h292.168.0.56-e 'status;'

9. Connect to master in slave:

CHANGE MASTER TO

MASTER_HOST='192.168.0.56', # master Host ip

MASTER_USER='econage', # users created above

MASTER_PASSWORD='hello123', # user password

File file name of MASTER_LOG_FILE='master-bin.000002', # master

Position number of MASTER_LOG_POS=474; # master

View

Show slave status\ G # may be in the wrong state, execute the following command

Stop slave

Start slave

The display of two yes is correct.

10. Verification

# check it in master and slave respectively

Show databases

# create a library in master

Create database hello

# you will find that there is also a library of hello on slave

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.