基于docker-compose的mysql主从同步搭建
基于docker-compose的mysql主从同步搭建
参考工程地址：https://gitee.com/proLeo/ray 目录docker/database/master-slave,本目录包含基于docker-compose快速搭建mysql主从需要的文件，容器启动完成将会搭建一主两从和一主一从共5个数据库，其中两主又可用于分库分表
文件说明
-
iflow.sql： 数据库初始化脚本，根据需要替换为自己的即可
-
init-master.sh： 主库初始化
#!/bin/bash
echo ">>>>start to init master"
set -e
# create replication user
#mysql_net=$(ip route | awk '$1=="default" {print $3}' | sed "s/\.[0-9]\+$/.%/g")
MYSQL_PWD=${MYSQL_ROOT_PASSWORD} mysql -u root \
-e "CREATE USER '${MYSQL_REPLICATION_USER}'@'%' IDENTIFIED BY '${MYSQL_REPLICATION_PASSWORD}'; \
GRANT REPLICATION SLAVE ON *.* TO '${MYSQL_REPLICATION_USER}'@'%';"
- init-master0-node.sh： master0从库初始化
#!/bin/bash
#check mysql master run status
echo ">>>>start to init node"
set -e
until MYSQL_PWD=${MASTER_MYSQL_ROOT_PASSWORD} mysql -u root -h mysql-master0 ; do
>&2 echo "MySQL master is unavailable - sleeping"
sleep 3
done
# create replication user
#mysql_net=$(ip route | awk '$1=="default" {print $3}' | sed "s/\.[0-9]\+$/.%/g")
MYSQL_PWD=${MASTER_MYSQL_ROOT_PASSWORD} mysql -u root \
-e "CREATE USER '${MYSQL_REPLICATION_USER}'@'%' IDENTIFIED BY '${MYSQL_REPLICATION_PASSWORD}'; \
GRANT REPLICATION SLAVE ON *.* TO '${MYSQL_REPLICATION_USER}'@'%';"
# get master log File & Position
master_status_info=$(MYSQL_PWD=${MASTER_MYSQL_ROOT_PASSWORD} mysql -u root -h mysql-master0 -e "show master status\G")
LOG_FILE=$(echo "${master_status_info}" | awk 'NR!=1 && $1=="File:" {print $2}')
LOG_POS=$(echo "${master_status_info}" | awk 'NR!=1 && $1=="Position:" {print $2}')
# set node master
MYSQL_PWD=${NODE_MYSQL_ROOT_PASSWORD} mysql -u root \
-e "CHANGE MASTER TO MASTER_HOST='mysql-master0', \
MASTER_USER='${MYSQL_REPLICATION_USER}', \
MASTER_PASSWORD='${MYSQL_REPLICATION_PASSWORD}', \
MASTER_LOG_FILE='${LOG_FILE}', \
MASTER_LOG_POS=${LOG_POS};"
# start slave and show slave status
MYSQL_PWD=${MYSQL_ROOT_PASSWORD} mysql -u root -e "START SLAVE;show slave status\G"
- init-master1-node.sh： master0从库初始化
#!/bin/bash
#check mysql master run status
echo ">>>>start to init node"
set -e
until MYSQL_PWD=${MASTER_MYSQL_ROOT_PASSWORD} mysql -u root -h mysql-master1 ; do
>&2 echo "MySQL master is unavailable - sleeping"
sleep 3
done
# create replication user
#mysql_net=$(ip route | awk '$1=="default" {print $3}' | sed "s/\.[0-9]\+$/.%/g")
MYSQL_PWD=${MASTER_MYSQL_ROOT_PASSWORD} mysql -u root \
-e "CREATE USER '${MYSQL_REPLICATION_USER}'@'%' IDENTIFIED BY '${MYSQL_REPLICATION_PASSWORD}'; \
GRANT REPLICATION SLAVE ON *.* TO '${MYSQL_REPLICATION_USER}'@'%';"
# get master log File & Position
master_status_info=$(MYSQL_PWD=${MASTER_MYSQL_ROOT_PASSWORD} mysql -u root -h mysql-master1 -e "show master status\G")
LOG_FILE=$(echo "${master_status_info}" | awk 'NR!=1 && $1=="File:" {print $2}')
LOG_POS=$(echo "${master_status_info}" | awk 'NR!=1 && $1=="Position:" {print $2}')
# set node master
MYSQL_PWD=${NODE_MYSQL_ROOT_PASSWORD} mysql -u root \
-e "CHANGE MASTER TO MASTER_HOST='mysql-master1', \
MASTER_USER='${MYSQL_REPLICATION_USER}', \
MASTER_PASSWORD='${MYSQL_REPLICATION_PASSWORD}', \
MASTER_LOG_FILE='${LOG_FILE}', \
MASTER_LOG_POS=${LOG_POS};"
# start slave and show slave status
MYSQL_PWD=${MYSQL_ROOT_PASSWORD} mysql -u root -e "START SLAVE;show slave status\G"
- docker-compose.yml:
version: "3.3"
services:
mysql-master0: &mysql-master0
image: mysql:${TAG}
container_name: mysql-iflow-master0
restart: unless-stopped
env_file:
- .env
environment:
- MYSQL_ROOT_PASSWORD=${MASTER_MYSQL_ROOT_PASSWORD}
- TZ=Asia/Shanghai
ports:
- "36005:3306"
expose:
- "3306"
volumes:
- ./mysql-master0-data:/var/lib/mysql
- ./init-db-sql/iflow.sql:/docker-entrypoint-initdb.d/1-schema.sql
- ./init-db-sql/init-master.sh:/docker-entrypoint-initdb.d/2-init-master.sh
command: [
"--log-bin=mysql-bin",
"--server-id=${MASTER0_SERVER_ID}",
"--character-set-server=utf8mb4",
"--collation-server=utf8mb4_unicode_ci",
"--innodb_flush_log_at_trx_commit=1",
"--sync_binlog=1"
]
mysql-master0-node1: &mysql-master0-node1
<<: *mysql-master0
container_name: mysql-iflow-master0-node1
environment:
- MYSQL_ROOT_PASSWORD=${NODE_MYSQL_ROOT_PASSWORD}
- MASTER_MYSQL_ROOT_PASSWORD=${MASTER_MYSQL_ROOT_PASSWORD}
- TZ=Asia/Shanghai
ports:
- "36006:3306"
depends_on:
- mysql-master0
volumes:
- ./mysql-master0-node-1-data:/var/lib/mysql
- ./init-db-sql/iflow.sql:/docker-entrypoint-initdb.d/1-schema.sql
- ./init-db-sql/init-master0-node.sh:/docker-entrypoint-initdb.d/2-init-node.sh
command: [
"--server-id=${MASTER0_NODE_1_SERVER_ID}",
"--character-set-server=utf8mb4",
"--collation-server=utf8mb4_unicode_ci",
]
mysql-master0-node2:
<<: *mysql-master0-node1
container_name: mysql-iflow-master0-node2
environment:
- MYSQL_ROOT_PASSWORD=${NODE_MYSQL_ROOT_PASSWORD}
- MASTER_MYSQL_ROOT_PASSWORD=${MASTER_MYSQL_ROOT_PASSWORD}
- TZ=Asia/Shanghai
ports:
- "36007:3306"
volumes:
- ./mysql-master0-node-2-data:/var/lib/mysql
- ./init-db-sql/iflow.sql:/docker-entrypoint-initdb.d/1-schema.sql
- ./init-db-sql/init-master0-node.sh:/docker-entrypoint-initdb.d/2-init-node.sh
command: [
"--server-id=${MASTER0_NODE_2_SERVER_ID}",
"--character-set-server=utf8mb4",
"--collation-server=utf8mb4_unicode_ci",
]
mysql-master1: &mysql-master1
image: mysql:${TAG}
container_name: mysql-iflow-master1
restart: unless-stopped
env_file:
- .env
environment:
- MYSQL_ROOT_PASSWORD=${MASTER_MYSQL_ROOT_PASSWORD}
- TZ=Asia/Shanghai
ports:
- "36008:3306"
expose:
- "3306"
volumes:
- ./mysql-master1-data:/var/lib/mysql
- ./init-db-sql/iflow.sql:/docker-entrypoint-initdb.d/1-schema.sql
- ./init-db-sql/init-master.sh:/docker-entrypoint-initdb.d/2-init-master.sh
command: [
"--log-bin=mysql-bin",
"--server-id=${MASTER1_SERVER_ID}",
"--character-set-server=utf8mb4",
"--collation-server=utf8mb4_unicode_ci",
"--innodb_flush_log_at_trx_commit=1",
"--sync_binlog=1"
]
mysql-master1-node1:
<<: *mysql-master1
container_name: mysql-iflow-master1-node1
environment:
- MYSQL_ROOT_PASSWORD=${NODE_MYSQL_ROOT_PASSWORD}
- MASTER_MYSQL_ROOT_PASSWORD=${MASTER_MYSQL_ROOT_PASSWORD}
- TZ=Asia/Shanghai
ports:
- "36009:3306"
depends_on:
- mysql-master1
volumes:
- ./mysql-master1-node-1-data:/var/lib/mysql
- ./init-db-sql/iflow.sql:/docker-entrypoint-initdb.d/1-schema.sql
- ./init-db-sql/init-master1-node.sh:/docker-entrypoint-initdb.d/2-init-node.sh
command: [
"--server-id=${MASTER1_NODE_1_SERVER_ID}",
"--character-set-server=utf8mb4",
"--collation-server=utf8mb4_unicode_ci",
]
操作说明
-
将database目录上传到满足docker-compose运行环境的服务器，mysql官方镜像启动时会在相应目录中查找上面配置的数据库初始化脚本并按顺序执行，见docker-compose.yml文件中的文件挂载配置
-
在docker-compose目录下新建.env文件,.env文件默认不可见,可以用ls -a查看,.env文件包含数据库server_id，数据库密码和主从用户的配置
TAG=5.7.22
MASTER0_SERVER_ID=1
MASTER0_NODE_1_SERVER_ID=10
MASTER0_NODE_2_SERVER_ID=20
MASTER1_SERVER_ID=2
MASTER1_NODE_1_SERVER_ID=30
MASTER_MYSQL_ROOT_PASSWORD=123456
NODE_MYSQL_ROOT_PASSWORD=123456
MYSQL_REPLICATION_USER=repl
MYSQL_REPLICATION_PASSWORD=123456
- 根据需要修改完所有配置之后启动容器即可