IT俱乐部 MySql MySQL8.4一主一从环境搭建实现

MySQL8.4一主一从环境搭建实现

一、MySQL数据库服务环境搭建

1.1、下载及上传mysql二进制安装包

下载地址

MySQL :: Download MySQL Community Server

上传mysql-8.4.0-linux-glibc2.17-x86_64.tar.xz到soft目录

ls -lsa /soft

1.2、增加MySQL用户组及用户

groupadd mysql
useradd -r -s /bin/false -g mysql mysql

mkdir -p /mysql/data/3306/data
mkdir -p /mysql/backup/backup-db

chown -R mysql:mysql /mysql

1.3、编辑配置文件my.cnf

vi /mysql/data/3306/my.cnf

[mysqld]
server-id=573306
port=3306
basedir=/mysql/app/mysql
datadir=/mysql/data/3306/data
log-error=/mysql/log/3306/superdb-error.log
socket=/mysql/data/3306/mysql.sock
pid-file=/mysql/data/3306/mysql.pid
character-set-server=utf8mb4
lower_case_table_names=1
innodb_log_file_size=1G
default-storage-engine=INNODB
mysql_native_password=on
secure_file_priv=''
[mysql]
prompt=(\u@\h)[\d]>\_

[client]
port=3306
default-character-set=utf8mb4

1.4、解压

cd /soft
ls
xz -d mysql-8.4.0-linux-glibc2.17-x86_64.tar.xz
tar xvf mysql-8.4.0-linux-glibc2.17-x86_64.tar
mv mysql-8.4.0-linux-glibc2.17-x86_64 /mysql/app/mysql

1.5、mysql初始化

/mysql/app/mysql/bin/mysqld  --defaults-file=/mysql/data/3306/my.cnf  --initialize --user=mysql --basedir=/mysql/app/mysql --datadir=/mysql/data/3306/data

1.6、安全模式启动mysql

/mysql/app/mysql/bin/mysqld_safe --defaults-file=/mysql/data/3306/my.cnf  &

1.7、设置软连接sock软连接

ln -sf /mysql/data/3306/mysql.sock /tmp/mysql.sock

1.8、编辑环境变量mysql home目录及登陆提示

vi ~/.bash_profile

PATH=$PATH:/mysql/app/mysql/bin:$HOME/bin
export MYSQL_PS1="(u@h:p)[d]>"

source ~/.bash_profile

tail -fn300 /mysql/log/3306/superdb-error.log

1.9、登陆mysql设置密码

defaultmysqlpwd=`grep 'A temporary password' /mysql/log/3306/superdb-error.log |awk -F "root@localhost: " '{ print $2}' |tail -n1`
mysql -uroot -p"${defaultmysqlpwd}" --connect-expired-password 

1.10、设置service mysqld 服务

mv /mysql/app/mysql/support-files/mysql.server /mysql/app/mysql/support-files/mysql.server.bak

vi /mysql/app/mysql/support-files/mysql.server

#!/bin/sh
# Copyright Abandoned 1996 TCX DataKonsult AB & Monty Program KB & Detron HB
# This file is public domain and comes with NO WARRANTY of any kind

# MySQL daemon start/stop script.

# Usually this is put in /etc/init.d (at least on machines SYSV R4 based
# systems) and linked to /etc/rc3.d/S99mysql and /etc/rc0.d/K01mysql.
# When this is done the mysql server will be started when the machine is
# started and shut down when the systems goes down.

# Comments to support chkconfig on RedHat Linux
# chkconfig: 2345 64 36
# description: A very fast and reliable SQL database engine.

# Comments to support LSB init script conventions
### BEGIN INIT INFO
# Provides: mysql
# Required-Start: $local_fs $network $remote_fs
# Should-Start: ypbind nscd ldap ntpd xntpd
# Required-Stop: $local_fs $network $remote_fs
# Default-Start:  2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: start and stop MySQL
# Description: MySQL is a very fast and reliable SQL database engine.
### END INIT INFO
 
# If you install MySQL on some other places than /usr/local/mysql, then you
# have to do one of the following things for this script to work:
#
# - Run this script from within the MySQL installation directory
# - Create a /etc/my.cnf file with the following information:
#   [mysqld]
#   basedir=
# - Add the above to any other configuration file (for example ~/.my.ini)
#   and copy my_print_defaults to /usr/bin
# - Add the path to the mysql-installation-directory to the basedir variable
#   below.
#
# If you want to affect other MySQL variables, you should make your changes
# in the /etc/my.cnf, ~/.my.cnf or other MySQL configuration files.

# If you change base dir, you must also change datadir. These may get
# overwritten by settings in the MySQL configuration files.

basedir=/mysql/app/mysql
datadir=/mysql/data/3306/data

# Default value, in seconds, afterwhich the script should timeout waiting
# for server start. 
# Value here is overriden by value in my.cnf. 
# 0 means don't wait at all
# Negative numbers mean to wait indefinitely
service_startup_timeout=900

# Lock directory for RedHat / SuSE.
lockdir='/var/lock/subsys'
lock_file_path="$lockdir/mysql"

# The following variables are only set for letting mysql.server find things.

# Set some defaults
mysqld_pid_file_path=/mysql/data/3306/mysql.pid
if test -z "$basedir"
then
  basedir=/mysql/app/mysql
  bindir=/mysql/app/mysql/bin
  if test -z "$datadir"
  then
    datadir=/mysql/data/3306/data
  fi
  sbindir=/mysql/app/mysql/bin
  libexecdir=/mysql/app/mysql/bin
else
  bindir="$basedir/bin"
  if test -z "$datadir"
  then
    datadir="/mysql/app/3306/data"
  fi
  sbindir="$basedir/sbin"
  libexecdir="$basedir/libexec"
fi

# datadir_set is used to determine if datadir was set (and so should be
# *not* set inside of the --basedir= handler.)
datadir_set=

#
# Use LSB init script functions for printing messages, if possible
#
lsb_functions="/lib/lsb/init-functions"
if test -f $lsb_functions ; then
  . $lsb_functions
else
  log_success_msg()
  {
    echo " SUCCESS! $@"
  }
  log_failure_msg()
  {
    echo " ERROR! $@"
  }
fi

PATH="/sbin:/usr/sbin:/bin:/mysql/app/mysql/bin:/usr/bin:$basedir/bin"
export PATH

mode=$1    # start or stop

[ $# -ge 1 ] && shift


other_args="$*"   # uncommon, but needed when called from an RPM upgrade action
           # Expected: "--skip-networking --skip-grant-tables"
           # They are not checked here, intentionally, as it is the resposibility
           # of the "spec" file author to give correct arguments only.

case `echo "testingc"`,`echo -n testing` in
    *c*,-n*) echo_n=   echo_c=     ;;
    *c*,*)   echo_n=-n echo_c=     ;;
    *)       echo_n=   echo_c='c' ;;
esac

parse_server_arguments() {
  for arg do
    case "$arg" in
      --basedir=*)  basedir=`echo "$arg" | sed -e 's/^[^=]*=//'`
                    bindir="$basedir/bin"
		    if test -z "$datadir_set"; then
		      datadir="$basedir/data"
		    fi
		    sbindir="$basedir/sbin"
		    libexecdir="$basedir/libexec"
        ;;
      --datadir=*)  datadir=`echo "$arg" | sed -e 's/^[^=]*=//'`
		    datadir_set=1
	;;
      --pid-file=*) mysqld_pid_file_path=`echo "$arg" | sed -e 's/^[^=]*=//'` ;;
      --service-startup-timeout=*) service_startup_timeout=`echo "$arg" | sed -e 's/^[^=]*=//'` ;;
    esac
  done
}

wait_for_pid () {
  verb="$1"           # created | removed
  pid="$2"            # process ID of the program operating on the pid-file
  pid_file_path="$3" # path to the PID file.

  i=0
  avoid_race_condition="by checking again"

  while test $i -ne $service_startup_timeout ; do

    case "$verb" in
      'created')
        # wait for a PID-file to pop into existence.
        test -s "$pid_file_path" && i='' && break
        ;;
      'removed')
        # wait for this PID-file to disappear
        test ! -s "$pid_file_path" && i='' && break
        ;;
      *)
        echo "wait_for_pid () usage: wait_for_pid created|removed pid pid_file_path"
        exit 1
        ;;
    esac

    # if server isn't running, then pid-file will never be updated
    if test -n "$pid"; then
      if kill -0 "$pid" 2>/dev/null; then
        :  # the server still runs
      else
        # The server may have exited between the last pid-file check and now.  
        if test -n "$avoid_race_condition"; then
          avoid_race_condition=""
          continue  # Check again.
        fi

        # there's nothing that will affect the file.
        log_failure_msg "The server quit without updating PID file ($pid_file_path)."
        return 1  # not waiting any more.
      fi
    fi

    echo $echo_n ".$echo_c"
    i=`expr $i + 1`
    sleep 1

  done

  if test -z "$i" ; then
    log_success_msg
    return 0
  else
    log_failure_msg
    return 1
  fi
}

# Get arguments from the my.cnf file,
# the only group, which is read from now on is [mysqld]
if test -x "$bindir/my_print_defaults";  then
  print_defaults="$bindir/my_print_defaults"
else
  # Try to find basedir in /etc/my.cnf
  conf=/mysql/data/3306/my.cnf
  print_defaults=
  if test -r $conf
  then
    subpat='^[^=]*basedir[^=]*=(.*)$'
    dirs=`sed -e "/$subpat/!d" -e 's//1/' $conf`
    for d in $dirs
    do
      d=`echo $d | sed -e 's/[ 	]//g'`
      if test -x "$d/bin/my_print_defaults"
      then
        print_defaults="$d/bin/my_print_defaults"
        break
      fi
    done
  fi

  # Hope it's in the PATH ... but I doubt it
  test -z "$print_defaults" && print_defaults="my_print_defaults"
fi

#
# Read defaults file from 'basedir'.   If there is no defaults file there
# check if it's in the old (depricated) place (datadir) and read it from there
#

extra_args=""
if test -r "/mysql/data/3306/my.cnf"
then
  extra_args="-e /mysql/data/3306/my.cnf"
fi

parse_server_arguments `$print_defaults $extra_args mysqld server mysql_server mysql.server`

#
# Set pid file if not given
#
if test -z "$mysqld_pid_file_path"
then
  mysqld_pid_file_path=$datadir/`hostname`.pid
else
  case "$mysqld_pid_file_path" in
    /* ) ;;
    * )  mysqld_pid_file_path="$datadir/$mysqld_pid_file_path" ;;
  esac
fi

case "$mode" in
  'start')
    # Start daemon

    # Safeguard (relative paths, core dumps..)
    cd $basedir

    echo $echo_n "Starting MySQL"
    if test -x $bindir/mysqld_safe
    then
      # Give extra arguments to mysqld with the my.cnf file. This script
      # may be overwritten at next upgrade.
      $bindir/mysqld_safe --defaults-file=/mysql/data/3306/my.cnf --datadir="$datadir" --pid-file="$mysqld_pid_file_path" $other_args >/dev/null &
      wait_for_pid created "$!" "$mysqld_pid_file_path"; return_value=$?

      # Make lock for RedHat / SuSE
      if test -w "$lockdir"
      then
        touch "$lock_file_path"
      fi

      exit $return_value
    else
      log_failure_msg "Couldn't find MySQL server ($bindir/mysqld_safe)"
    fi
    ;;

  'stop')
    # Stop daemon. We use a signal here to avoid having to know the
    # root password.

    if test -s "$mysqld_pid_file_path"
    then
      # signal mysqld_safe that it needs to stop
      touch "$mysqld_pid_file_path.shutdown"

      mysqld_pid=`cat "$mysqld_pid_file_path"`

      if (kill -0 $mysqld_pid 2>/dev/null)
      then
        echo $echo_n "Shutting down MySQL"
        kill $mysqld_pid
        # mysqld should remove the pid file when it exits, so wait for it.
        wait_for_pid removed "$mysqld_pid" "$mysqld_pid_file_path"; return_value=$?
      else
        log_failure_msg "MySQL server process #$mysqld_pid is not running!"
        rm "$mysqld_pid_file_path"
      fi

      # Delete lock for RedHat / SuSE
      if test -f "$lock_file_path"
      then
        rm -f "$lock_file_path"
      fi
      exit $return_value
    else
      log_failure_msg "MySQL server PID file could not be found!"
    fi
    ;;

  'restart')
    # Stop the service and regardless of whether it was
    # running or not, start it again.
    if $0 stop  $other_args; then
      $0 start $other_args
    else
      log_failure_msg "Failed to stop running server, so refusing to try to start."
      exit 1
    fi
    ;;

  'reload'|'force-reload')
    if test -s "$mysqld_pid_file_path" ; then
      read mysqld_pid /dev/null ; then 
        log_success_msg "MySQL running ($mysqld_pid)"
        exit 0
      else
        log_failure_msg "MySQL is not running, but PID file exists"
        exit 1
      fi
    else
      # Try to find appropriate mysqld process
      mysqld_pid=`pidof $libexecdir/mysqld`

      # test if multiple pids exist
      pid_count=`echo $mysqld_pid | wc -w`
      if test $pid_count -gt 1 ; then
        log_failure_msg "Multiple MySQL running but PID file could not be found ($mysqld_pid)"
        exit 5
      elif test -z $mysqld_pid ; then 
        if test -f "$lock_file_path" ; then 
          log_failure_msg "MySQL is not running, but lock file ($lock_file_path) exists"
          exit 2
        fi 
        log_failure_msg "MySQL is not running"
        exit 3
      else
        log_failure_msg "MySQL is running but PID file could not be found"
        exit 4
      fi
    fi
    ;;
    *)
      # usage
      basename=`basename "$0"`
      echo "Usage: $basename  {start|stop|restart|reload|force-reload|status}  [ MySQL server options ]"
      exit 1
    ;;
esac

exit 0

cp /mysql/app/mysql/support-files/mysql.server /etc/init.d/mysqld

chmod 775 /etc/init.d/mysqld

chkconfig --list
chkconfig --add mysqld
chkconfig --list

service mysqld status

service mysqld stop

service mysqld start

二、数据准备,模拟生产的环境

2.1、主节点创建库及测试表

create database db01;
use db01;

create table dept
( deptno int unsigned auto_increment primary key comment '部门编号',
dname  varchar(15) comment '部门名称'  ,
loc  varchar(50) comment '部门所在位置'
)engine = innodb default charset=utf8mb4 comment='员工部门表';

create table emp(
empno int unsigned auto_increment primary key comment '雇员编号',
ename varchar(15)  comment '雇员姓名' ,
job varchar(10)   comment '雇员职位'  ,
mgr int unsigned  comment '雇员对应的领导的编号',
hiredate  date    comment '雇员的雇佣日期' ,
sal decimal(7,2)  comment '雇员的基本工资' ,
comm  decimal(7,2)   comment '奖金'  ,
deptno int unsigned   comment '所在部门' ,
foreign key(deptno) references dept(deptno)
)engine = innodb default charset =utf8mb4 comment='雇员信息表';

create table salgrade
(
grade int comment '工资等级',
losal int comment '此等级的最低工资',
hisal int comment '此等级的最高工资'
)engine=innodb default charset=utf8mb4 comment='工资等级表';

alter table salgrade add constraint pk_salgrade_primary primary key (grade,losal,hisal);

create table bonus
(   ename  varchar(10) comment '雇员姓名',
job    varchar(9) comment '雇员职位',
sal    decimal(7,2) comment '雇员工资',
comm   decimal(7,2) comment '雇员奖金'
)engine=innodb default charset=utf8mb4 comment='雇员奖金表' ;

alter table bonus add constraint pk_bonus_primary primary key (ename,job);

show full columns from emp;
select * from information_schema.tables where table_schema='db01' and table_name='emp';
select * from information_schema.columns where table_schema='db01' and table_name='emp';

insert into dept values (10,'ACCOUNTING','NEW YORK');
insert into dept values (20,'RESEARCH','DALLAS');
insert into dept values (30,'SALES','CHICAGO');
insert into dept values (40,'OPERATIONS','BOSTON');

insert into emp values    (7369,'SMITH','CLERK',7902,'1980-12-17',800,null,20);
insert into emp values    (7499,'ALLEN','SALESMAN',7698,'1981-2-20',1600,300,30);
insert into emp values    (7521,'WARD','SALESMAN',7698,'1981-2-22',1250,500,30);
insert into emp values    (7566,'JONES','MANAGER',7839,'1981-4-2',2975,null,20);
insert into emp values    (7654,'MARTIN','SALESMAN',7698,'1981-9-28',1250,1400,30);
insert into emp values    (7698,'BLAKE','MANAGER',7839,'1981-5-1',2850,null,30);
insert into emp values    (7782,'CLARK','MANAGER',7839,'1981-6-9',2450,null,10);
insert into emp values    (7788,'SCOTT','ANALYST',7566,'87-7-13',3000,null,20);
insert into emp values    (7839,'KING','PRESIDENT',null,'1981-11-17',5000,null,10);
insert into emp values    (7844,'TURNER','SALESMAN',7698,'1981-9-8',1500,0,30);
insert into emp values    (7876,'ADAMS','CLERK',7788,'87-7-13',1100,null,20);
insert into emp values    (7900,'JAMES','CLERK',7698,'1981-12-3',950,null,30);
insert into emp values    (7902,'FORD','ANALYST',7566,'1981-12-3',3000,null,20);
insert into emp values    (7934,'MILLER','CLERK',7782,'1982-1-23',1300,null,10);

insert into salgrade values (1,700,1200);
insert into salgrade values (2,1201,1400);
insert into salgrade values (3,1401,2000);
insert into salgrade values (4,2001,3000);
insert into salgrade values (5,3001,9999);
commit;

三、搭建主从及测试

3.1、设置复制源配置

show variables like '%server_id%';

3.2、为复制创建用户

注意:主从节点都执行,方便后期主从切换

CREATE USER 'repl'@'%' identified by 'Root@3306';
GRANT REPLICATION SLAVE ON *.* TO 'repl'@'%';

测试从库连接主库

mysql -u repl -p -h 192.168.80.50

3.3、获取复制源的二进制日志位置

在主节点的不同会话中,使用 SHOW BINARY LOG STATUS语句确定当前二进制日志文件名和位置:

SHOW BINARY LOG STATUS;
(root@localhost:mysql.sock)[(none)]>SHOW BINARY LOG STATUS;
+---------------+----------+--------------+------------------+-------------------+
| File          | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+---------------+----------+--------------+------------------+-------------------+
| binlog.000001 |    11518 |              |                  |                   |
+---------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)

3.4、主节点备份及上传到备节点

使用mysqldump工具创建要复制的所有数据库的转储。这是推荐的方法,尤其是在使用 InnoDB. 
mysqldump –all-databases –master-data > dbdump.db
如果不使用 –master-data,则需要手动锁定单独会话中的所有表 –ignore-table使用选项 排除数据库中的所有表 –databases选项仅命名要转储的那些数据库

cd /mysql/backup/backup-db
mysqldump  -uroot  -p  --all-databases  --master-data=1 > dbfulldump.db

du -sh dbfulldump.db 

从节点检查目录是的否存在

mkdir -p /mysql/backup/backup-db

拷贝主节点的备份到从节点

scp -r /mysql/backup/backup-db/dbfulldump.db root@192.168.80.51:/mysql/backup/backup-db

3.5、设置副本

3.5.1、调整server_id

show variables like '%server%';
+---------------------------------+--------------------------------------+
| Variable_name                   | Value                                |
+---------------------------------+--------------------------------------+
| character_set_server            | utf8mb4                              |
| collation_server                | utf8mb4_0900_ai_ci                   |
| immediate_server_version        | 999999                               |
| innodb_dedicated_server         | OFF                                  |
| innodb_ft_server_stopword_table |                                      |
| original_server_version         | 999999                               |
| server_id                       | 513306                               |
| server_id_bits                  | 32                                   |
| server_uuid                     | 81c80be9-10d4-11ef-b4df-000c290e14ee |
+---------------------------------+--------------------------------------+
9 rows in set (0.00 sec)

3.5.2、导入数据

show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
4 rows in set (0.00 sec)

source dbdump.db

3.5.3、配置连接到主服务器的相关信息

CHANGE REPLICATION SOURCE TO SOURCE_HOST='192.168.80.50', SOURCE_LOG_FILE='binlog.000001', SOURCE_LOG_POS=11518, SOURCE_PORT=3306, SOURCE_USER='repl', SOURCE_PASSWORD='Root@3306';

3.5.4、启动从服务器的复制线程

start REPLICA;

3.6、验证

show REPLICA status G
show processlist G
select * from db01.emp;
select * from db01.dept;

3.7、在线启用 GTID 事务

3.7.1、主库

SET @@GLOBAL.ENFORCE_GTID_CONSISTENCY = WARN;
SET @@GLOBAL.ENFORCE_GTID_CONSISTENCY = ON;
SET @@GLOBAL.GTID_MODE = OFF_PERMISSIVE;
SET @@GLOBAL.GTID_MODE = ON_PERMISSIVE;
SHOW STATUS LIKE 'ONGOING_ANONYMOUS_TRANSACTION_COUNT';
SET @@GLOBAL.GTID_MODE = ON;

3.7.2、从库

SET @@GLOBAL.ENFORCE_GTID_CONSISTENCY = WARN;
SET @@GLOBAL.ENFORCE_GTID_CONSISTENCY = ON;
SET @@GLOBAL.GTID_MODE = OFF_PERMISSIVE;
SET @@GLOBAL.GTID_MODE = ON_PERMISSIVE;
SHOW STATUS LIKE 'ONGOING_ANONYMOUS_TRANSACTION_COUNT';
SET @@GLOBAL.GTID_MODE = ON;
stop replica;
CHANGE REPLICATION SOURCE TO SOURCE_AUTO_POSITION = 1 ;
START replica;

3.7.3、修改配置文件

gtid_mode = ON
enforce_gtid_consistency = ON

3.7.4、主节点模拟增量数据产生及数据同步

CREATE TABLE t_city_list(
id bigint auto_increment,
country VARCHAR(64),
city VARCHAR(64),
constraint pk_t_city_list_id primary key(id)
);

INSERT INTO t_city_list(country,city) VALUES ('中国','北京');
INSERT INTO t_city_list(country,city) VALUES ('中国','广州');
INSERT INTO t_city_list(country,city) VALUES ('中国','深圳');
INSERT INTO t_city_list(country,city) VALUES ('中国','香港');
INSERT INTO t_city_list(country,city) VALUES ('中国','上海');
INSERT INTO t_city_list(country,city) VALUES ('日本','东京');
INSERT INTO t_city_list(country,city) VALUES ('日本','大阪');
commit;

select * from db01.t_city_list

从节点检查

select * from t_city_list;

主节点再次新增数据

INSERT INTO t_city_list(country,city) VALUES ('中国','中山');
INSERT INTO t_city_list(country,city) VALUES ('中国','珠海');

从节点再次检查数据同步情况

select * from t_city_list;

3.8、主备切换

3.8.1、设置主库只读

set global read_only=ON;
set global super_read_only=ON;

3.8.2、查看从库进程状态

show replica status G;

确认参数项
Slave_IO_Running              参数值为YES
Slave_SQL_Running           参数值为YES
Seconds_Behind_Master    参数值为   0

3.8.3、主备节点两边的executed_gtid集合对比

select @@global.gtid_executed;
+-------------------------------------------+
| @@global.gtid_executed                    |
+-------------------------------------------+
| e9adc552-10d5-11ef-81ba-000c2940f616:1-10 |
+-------------------------------------------+
1 row in set (0.00 sec)

show global variables like 'gtid_%';
+----------------------------------+-------------------------------------------+
| Variable_name                    | Value                                     |
+----------------------------------+-------------------------------------------+
| gtid_executed                    | e9adc552-10d5-11ef-81ba-000c2940f616:1-10 |
| gtid_executed_compression_period | 0                                         |
| gtid_mode                        | ON                                        |
| gtid_owned                       |                                           |
| gtid_purged                      |                                           |
+----------------------------------+-------------------------------------------+
5 rows in set (0.00 sec)

3.8.4、从库停掉复制进程并清空主从信息(原从库)

stop replica;
reset replica all;

3.8.5、从库关闭只读(原从库)

set global read_only=off;
set global super_read_only=off;

3.8.6、主库设置执行原主库转为从库

CHANGE MASTER TO MASTER_HOST='192.168.80.51',MASTER_PORT=3306, MASTER_USER='repl', MASTER_PASSWORD='Root@3306',master_auto_position=1; #mysql5.7/mysql8.0

CHANGE REPLICATION SOURCE TO SOURCE_HOST='192.168.80.51',SOURCE_PORT=3306,SOURCE_USER='repl', SOURCE_PASSWORD='Root@3306',SOURCE_auto_position=1; #mysql8.4

start replica;

3.8.7、检查验证

新从节点原主节点80.50

show replica status G;

新主节点原从节点80.51

INSERT INTO db01.t_city_list(country,city) VALUES ('中国','兰州');

新主从节点检查数据同步情况

select * from db01.t_city_list;

到此这篇关于MySQL8.4一主一从环境搭建实现的文章就介绍到这了,更多相关MySQL8.4一主一从搭建内容请搜索IT俱乐部以前的文章或继续浏览下面的相关文章希望大家以后多多支持IT俱乐部!

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