mysql5.6版本基于GTID双主-docker方式-主库有数据

Posted 2021-02-14

#(0)环境规划

mysql版本:5.6 
master01 :  192.168.19.131 
master02 : 192.168.19.132

#(1)安装docker和docker-compose

curl -o /etc/yum.repos.d/docker-ce.repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
yum install docker-ce-17.06.0.ce-1.el7.centos.x86_64 -y
systemctl enable docker
systemctl  start docker
cat > /etc/docker/daemon.json <<EOF
{
     "registry-mirrors": ["https://ui5lsypg.mirror.aliyuncs.com"]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker

sudo curl -L https://mirrors.aliyun.com/docker-toolbox/linux/compose/1.21.2/docker-compose-Linux-x86_64 > /usr/local/bin/docker-compose
sudo chmod +x /usr/local/bin/docker-compose
docker-compose --version

#（2）准备目录

mkdir /mysql3307/{data,conf} -pv 
mkdir /temp/docker/compose/ -pv 

#（3）master01 和 master02 的配置文件
注意修改server-id和 auto_increment_offset

#cat /mysql3307/conf/my.cnf 
[mysqld]
#basic
character-set-server=utf8
lower_case_table_names=1
skip-name-resolve
max_connections = 10000
user=mysql
port=3306
datadir=/mysql3307/data
socket=/var/lib/mysql/mysql.sock
pid-file=/var/run/mysql/mysql.pid
log_error=/var/log/mysql/error.log
default_time_zone = ‘+8:00‘
explicit_defaults_for_timestamp=true

#slow log 
slow_query_log = 1
long_query_time = 1

#lock 
innodb_lock_wait_timeout=50
lock_wait_timeout=50
innodb_autoinc_lock_mode=2

#innodb
innodb_file_per_table=ON
innodb_buffer_pool_size=128M

#redo log
innodb_flush_log_at_trx_commit=1
innodb_support_xa=ON
innodb_log_file_size=16M
innodb_log_files_in_group=2
innodb_log_group_home_dir=./ 

#binlog 
sync_binlog=1
binlog_format=row
max_binlog_size=1073741082
log-bin=master01
expire_logs_days = 7

#Replication availability
master-info-repository=TABLE
relay-log-info-repository=TABLE
relay_log_recovery=1
sync_relay_log=1
sync_relay_log_info=1

#flush
innodb_io_capacity=200
innodb_flush_neighbors=0 

#gtid 
server-id=1     
gtid-mode=on
enforce-gtid-consistency=true
auto_increment_offset=1
auto_increment_increment=2
log-slave-updates=true

#（4）compose文件

#cat /temp/docker/mysql3307/mysql3307.yaml 
version: ‘2.2‘
services:
    mysql3307:
        hostname: mysql3307
        container_name: mysql3307
        restart: always
        image: registry.cn-hangzhou.aliyuncs.com/wangfang-dev/mysql:5.6
        ports:
            - 3307:3306
        volumes:
            - /mysql3307/conf:/etc/mysql/conf.d
            - /mysql3307/data:/var/lib/mysql
        environment:
            MYSQL_ROOT_PASSWORD: 123456
        cpus: 1
        mem_limit: 2048m

#（5）先启动master01和准备一些数据

docker-compose -f /temp/docker/mysql3307/mysql3307.yaml up -d
启动成功, 进入容器里面的数据库先创建一些数据
docker exec -it mysql3307 bash 
mysql -uroot -p123456

创建复制和备份账户
grant replication slave,replication client on *.* to ‘rep‘@‘%‘ identified by ‘rep‘;
grant reload,process,lock tables,replication client on *.* to [email protected]‘%‘ identified by ‘backup‘;

#（6）在master01和master02上创建备份目录和安装percona备份软件

mkdir -pv /backup/db3307
yum install epel-release -y
yum install percona-xtrabackup.x86_64 -y

#（7）在master01上进行完整备份

innobackupex --defaults-file=/mysql3307/conf/my.cnf  --user=backup --password=backup --host=192.168.19.131 --port=3307 /backup/db3307
同时把备份传到master02上:scp -r /backup/db3307/2019-03-02_23-13-39/ 192.168.19.132:/backup/db3307/

#（8）在master02上进行恢复备份和启动mysql容器

docker-compose -f /temp/docker/mysql3307/mysql3307.yaml down
rm -rf /mysql3307/data/*
innobackupex --defaults-file=/mysql3307/conf/my.cnf --apply-log --redo-only /backup/db3307/2019-03-02_23-13-39/
innobackupex --defaults-file=/mysql3307/conf/my.cnf --copy-back /backup/db3307/2019-03-02_23-13-39/
docker-compose -f /temp/docker/mysql3307/mysql3307.yaml up -d

#（9）在master02上查看完整备份的已执行过的gtid

[[email protected] ~]# cat /backup/db3307/2019-03-02_23-13-39/xtrabackup_binlog_info 
master01.000004 2028    97c3fe88-3cfc-11e9-b08a-0242ac120002:1-7147

#（10）在master02上进入容器的mysql, 跳过已执行过的GTID和设置master01作为master02的从

docker exec -it mysql3307 bash
[email protected]:/# mysql -uroot -p123456
mysql> reset master;
mysql> set @@global.gtid_purged=‘97c3fe88-3cfc-11e9-b08a-0242ac120002:1-7147‘;
mysql> change master to master_host=‘192.168.19.131‘,master_user=‘rep‘,master_password=‘rep‘,master_port=3307,master_auto_position=1;
mysql> start slave;

主从复制没有问题

#（11）回到master01上, 配置master02作为master01的从

docker exec -it mysql3307 bash 
mysql -uroot -p123456
mysql>change master to master_host=‘192.168.19.132‘,master_user=‘rep‘,master_password=‘rep‘,master_port=3307,master_auto_position=1;
mysql>start slave

主从复制没有问题

#（12）分别在master01上和master02上创建一些数据进行验证