1. Environment
Build on linux environment
2. Version
docker
mysql：
wget https://dev.mysql.com/get/downloads/mysql-5.7.22-1.el7.i686.rpm-bundle.tar
3, install mysql
cd /usr/local installation path
wget https://dev.mysql.com/get/downloads/mysql-5.7.22-1.el7.i686.rpm-bundle.tar
tar -zxvf mysql-5.7.22-1.el7.i686.rpm-bundle.tar
4. Install docker
The installation of docker uses:
1. Install docker
# yum install -y docker
2. Start docker
# systemctl start docker
3. Install the docker image
# docker pull [docker image address]
Use Alibaba Cloud Mirror
Modify /etc/docker/daemon.json
{
"registry-mirrors": ["https://uulfe4bd.mirror.aliyuncs.com"]
}
4. Restart docker after modification
https://dev.aliyun.com/search.html to query image files.
# systemctl restart docker
5. Get the docker image
MySQL installation needs to be built on the basis of centos, and docker needs to be installed in docker
# docker pull https://registry.cn-hangzhou.aliyuncs.com/moensun/centos7
View the created centos7 image docker images record ID 3db94df3e006
6. Create a docker container
# docker run -tid 3db94df3e006 (you can see it when looking at the centos7 image) /usr/sbin/init
Rename container name
docker rename priceless_poitras mysql-master1
Re-view docker ps -a The container name modification is complete
Since it is master-slave replication, two containers mysql-master1 and mysql-slave2 should be created. Here, the mysql-slave2 container is created
(Because mysql-slave1 was created before, this time mysql-slave2 was created, and the name can be named by yourself. This time I just want to write a blog, which is convenient for future learning and for students who want to learn, one master mysql-master1, one From mysql-slave2, if you build it later, you can build the master master according to your own needs, with multiple masters and multiple slaves)
7, MySQL file copy
Docker file copy (container <=> docker)
# docker cp original path docker container path (system = "docker)
# docker cp MySQL-server-5.6.38-1.el7.x86_64.rpm mysql_master2:/root/
# docker cp docker container path original path (docker=>system)
将之前mysql解压后的文件分别拷贝到mysql-master1和mysql-slave2
docker cp mysql-community-common-5.7.22-1.el7.x86_64.rpm mysql-master1:/root/
docker cp mysql-community-client-5.7.22-1.el7.x86_64.rpm mysql-master1:/root/
docker cp mysql-community-libs-5.7.22-1.el7.x86_64.rpm mysql-master1:/root/
docker cp mysql-community-server-5.7.22-1.el7.x86_64.rpm mysql-master1:/root/
docker cp mysql-community-server-5.7.22-1.el7.x86_64.rpm mysql-slave2:/root/
docker cp mysql-community-client-5.7.22-1.el7.x86_64.rpm mysql-slave2:/root/
docker cp mysql-community-libs-5.7.22-1.el7.x86_64.rpm mysql-slave2:/root/
docker cp mysql-community-common-5.7.22-1.el7.x86_64.rpm mysql-slave2:/root/
8. Enter the container
# docker exec -it container name/bin/bash
# docker exec -it mysql_master1 /bin/bash
Open two remote login windows, enter the main container and the slave container respectively
主，docker exec -it mysql_master1 /bin/bash
从，docker exec -it mysql_slave2/bin/bash
9, MySQL master-slave replication
cd to the root directory
ll Check the rpm of the copied mysql
Install mysql, install mysql, you need to install mysql dependencies
(1) Install the centos system to install mysql dependencies:
1. perl perl-Module-Build
2. autoconf
3. libaio
4. namuctl-libs
5. net-tools
yum install -y perl perl-Module-Build net-tools autoconf libaio numactl-libs
install mysql
(2) in the root directory
rpm -ivh mysql-community-*.rpm
start mysql
systemctl start mysqld
I usually report an error to see the log is that the disk does not have the allocated size
Need to add innodb_buffer_pool_size = 8M to vi /etc/my.cnf
Best if there is no error
After the first startup, there will be an initialization process, which will generate a random password for the root account.
cat /var/log/mysqld.log | grep password
connect to mysql
mysql -uroot -pkzl \ (kVo-w0lg
where (needs escaping
set reset password
Note: If you only want to set a simple password, you need to modify two global parameters:
mysql> set global validate_password_length=1;set global validate_password_policy=0;
set password = password('your password')
set password = password(‘123456’)
Remote login authorization
mysql> grant all privileges on *.* to 'root'@'%' identified by '123456' with grant option;
mysql> flush privileges;
master-slave replication process
(operating on the host):
vi /etc/my.cnf
Configuration file my.cnf
[client]
port = 3306
socket = /var/lib/mysql/mysql.sock
[mysqld]
# Whether the host or the slave server-id cannot be the same
server-id = 2
port = 3306
##If there is one, it can be removed
datadir = / var / lib / mysql
socket = /var/lib/mysql/mysql.sock
default-storage-engine = InnoDB
log-bin = mysql-bin
log-bin-index = mysql-bin.index
relay-log = mysql-relay
relay-log-index = mysql-relay.index
expire-logs-days = 10
max-binlog-size = 100M
max_binlog_cache_size = 8M
log-slave-updates = 1
binlog_cache_size = 4M
# use MIXED binlog
binlog_format = MIXED
#binlog_format = ROW
#replicate-do-db = db%.%
#replicate-ignore-db = mysql.%
# ignore tables
replicate-wild-ignore-table = mysql.%
sync_binlog = 1
relay_log_recovery = 1
log_slave_updates = 1
skip-name-resolve
sql_mode=STRICT_TRANS_TABLES
[mysqldump]
quick
max_allowed_packet = 32M
1. Create a synchronous replication user
mysql> create user 'repl'@'172.17.0.%' identified by '123456';
2. Empower synchronous replication users
mysql> grant replication slave on *.* to 'repl'@'172.17.0.%' identified by '123456';
mysql> flush privileges;
3. Enable binlog
Note a few pits when configuring:
The pit of Replication-do-db, if there are multiple libraries, use multi-line Replication-do-db for configuration
The pit of Replication-ignore-db, if multiple libraries are ignored, use multi-line Replication-ignore-db for configuration
4. restart mysql
#systemctl restart mysqld
5. connect to mysql
show master status \G;
Slave operation:
vi /etc/my.cnf
Configuration file my.cnf
[client]
port = 3306
socket = /var/lib/mysql/mysql.sock
[mysqld]
# Whether the host or the slave server-id cannot be the same
server-id = 2
port = 3306
##If there is one, it can be removed
datadir = / var / lib / mysql
socket = /var/lib/mysql/mysql.sock
default-storage-engine = InnoDB
log-bin = mysql-bin
log-bin-index = mysql-bin.index
relay-log = mysql-relay
relay-log-index = mysql-relay.index
expire-logs-days = 10
max-binlog-size = 100M
max_binlog_cache_size = 8M
log-slave-updates = 1
binlog_cache_size = 4M
# use MIXED binlog
binlog_format = MIXED
#binlog_format = ROW
#replicate-do-db = db%.%
#replicate-ignore-db = mysql.%
# ignore tables
replicate-wild-ignore-table = mysql.%
sync_binlog = 1
relay_log_recovery = 1
log_slave_updates = 1
skip-name-resolve
sql_mode=STRICT_TRANS_TABLES
[mysqldump]
quick
max_allowed_packet = 32M
Connect mysql operation:
1. Stop slave；
The most critical statement of master-slave replication:
2. Change master to
Master_host=’172.17.0.2’,
Master_user=’repl’,
Master_password=’123456’,
Master_log_file=’mysql-bin.000001’,
Master_log_pos=120;
3. Start slave；
4.show slave status \G;
test
主mysql：create database db1;
从 mysql> show databases;
created db1 from mysql