docker容器部署mysql主從同步之gtid方法
阿新 • • 發佈：2020-12-28
環境
centos
192.168.1.10 (master)
192.168.1.11 (slave)
主（ master)
劃分儲存卷
lvcreate -L 200G -name lvdata vgdata
mkfs.xfs /dev/mapper/vgdata-lvmysql
mkdir /mysql
vim /etc/fstab
/dev/mapper/vgdata-lvmysql /mysql xfs defaults 0 0
mount -a
初始化mysql主節點配置
$ docker pull local.harbor.io/library/mysql:5.7.22 $ mkdir /mysql/data /mysql/log /mysql/config #建立日誌、配置檔案、資料持久儲存目錄 $ docker run -tid --restart=always --net=host -e MYSQL_ROOT_PASSWORD=123456 --name mysql-test mysql:5.7.22 #啟動測試容器將預設檔案拷貝 $ docker cp mysql-test:/var/log/mysql /mysql/log $ docker cp mysql-test:/var/lib/mysql /mysql/data $ docker cp mysql-test:/etc/mysql /mysql/config $ vim /mysql/config/mysql/my.cnf #設定配置檔案引數 [client] port = 3306 socket = /var/lib/mysql/mysql.sock [mysqld] gtid_mode=on enforce_gtid_consistency=1 datadir=/var/lib/mysql port = 3306 socket = /var/lib/mysql/mysql.sock symbolic-links=0 skip-external-locking key_buffer_size = 16M max_allowed_packet = 1M table_open_cache = 64 sort_buffer_size = 512K net_buffer_length = 8K read_buffer_size = 256K read_rnd_buffer_size = 512K myisam_sort_buffer_size = 8M innodb_buffer_pool_size = 2G log-bin=mysql-bin binlog_format=mixed server-id = 1 [mysqld_safe] log-error=/var/log/mysql/zbx3dbmaster.log pid-file=/var/lib/mysql/zbx3dbmaster.pid [mysqldump] quick max_allowed_packet = 16M [mysql] no-auto-rehash [myisamchk] key_buffer_size = 20M sort_buffer_size = 20M read_buffer = 2M write_buffer = 2M [mysqlhotcopy] interactive-timeout
啟動主節點容器
$ docker run -tid --restart=always --net=host -e MYSQL_ROOT_PASSWORD=123456 -v /mysql/data/mysql:/var/lib/mysql -v /mysql/log/mysql:/var/log/mysql -v /mysql/config/mysql:/etc/mysql --name mysql-master mysql:5.7.22
建立同步使用者
docker exec -ti mysql-master mysql -uroot -p123456 -e "grant replication slave on *.* to 'db_sync'@'%' identified by 'abcdefg';"
檢視主狀態
docker exec -ti mysql-master mysql -uroot -p123456 -e "show master status\G;"
*************************** 1. row ***************************
File: mysql-bin.000001
Position: 154
Binlog_Do_DB: db
Binlog_Ignore_DB:
Executed_Gtid_Set:
1 row in set (0.00 sec)
從 （slave）
劃分儲存卷
lvcreate -L 200G -name lvdata vgdata
mkfs.xfs /dev/mapper/vgdata-lvmysql
mkdir /mysql
vim /etc/fstab
/dev/mapper/vgdata-lvmysql /mysql xfs defaults 0 0
mount -a
初始化從節點配置
```bash
$ docker pull local.harbor.io/library/mysql:5.7.22
$ mkdir /mysql/data /mysql/log /mysql/config #建立日誌、配置檔案、資料持久儲存目錄
$ docker run -tid --restart=always --net=host -e MYSQL_ROOT_PASSWORD=123456 --name mysql-test mysql:5.7.22 #啟動測試容器將預設檔案拷貝
$ docker cp mysql-test:/var/log/mysql /mysql/log
$ docker cp mysql-test:/var/lib/mysql /mysql/data
$ docker cp mysql-test:/etc/mysql /mysql/config
$ vim /mysql/config/mysql/my.cnf #設定配置檔案引數
[client]
port = 3306
socket = /var/lib/mysql/mysql.sock
[mysqld]
gtid_mode=on
enforce_gtid_consistency=1
datadir=/var/lib/mysql
port = 3306
socket = /var/lib/mysql/mysql.sock
symbolic-links=0
skip-external-locking
key_buffer_size = 16M
max_allowed_packet = 1M
table_open_cache = 64
sort_buffer_size = 512K
net_buffer_length = 8K
read_buffer_size = 256K
read_rnd_buffer_size = 512K
myisam_sort_buffer_size = 8M
innodb_buffer_pool_size = 2G
log-bin=mysql-bin
binlog_format=mixed
server-id = 2
[mysqld_safe]
log-error=/var/log/mysql/zbx3dbslave.log
pid-file=/var/lib/mysql/zbx3dbslave.pid
[mysqldump]
quick
max_allowed_packet = 16M
[mysql]
no-auto-rehash
[myisamchk]
key_buffer_size = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M
[mysqlhotcopy]
interactive-timeout
$ docker run -tid --restart=always -p3306:3306 -e MYSQL_ROOT_PASSWORD=123456 -v /mysql/data/mysql:/var/lib/mysql -v /mysql/log/mysql:/var/log/mysql -v /mysql/config/mysql:/etc/mysql --name mysql-slave mysql:5.7.22
與主同步
$ docker exec -ti mysql-slave1 mysql -uroot -p123456 -e "stop slave;change master to master_host='192.168.211.60',master_user='db_sync',master_password='abcdefg',master_auto_position=1,MASTER_HEARTBEAT_PERIOD=2,MASTER_CONNECT_RETRY=1, MASTER_RETRY_COUNT=86400;set global slave_net_timeout=8;start slave;"
$ docker exec -ti mysql-slave mysql -uroot -p123456 -e "show slave status\G;"
如果報錯
Last_IO_Error: Fatal error: The slave I/O thread stops because master and slave have equal MySQL server UUIDs; these UUIDs must be different for replication to work
原因：uuid值相等
解決方法：修改不一樣即可
修改 /mysql/data/mysql/auto.cnf
[auto]
server-uuid=a97c5316-4819-11eb-a312-000c29613c38