1.keepalived地址规划
192.168.217.33 xtgsadmin/nx!H01142
192.168.217.34 xtgsadmin/nx!H01141
vip
192.168.217.64
掩码255.255.255.0
网关192.168.217.254
2.keepalived配置信息
节点一：
root@H01089 keepalived\]# cat keepalived.conf ! Configuration File for keepalived vrrp_instance VI_1 { state MASTER interface eth5 virtual_router_id 51 priority 100 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.217.64 } } 节点二： vrrp_instance VI_1 { state MASTER interface enP1p24s0f0 virtual_router_id 51 priority 50 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.217.64 } } 3.keepalived编译安装 yum install -y gcc gcc-c++ ncurses\* ./configure --prefix=/usr/local/keepalived cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/ cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/ ln -s /usr/local/keepalived/sbin/keepalived /usr/sbin/ chmod +x /etc/init.d/keepalived chkconfig --add keepalived chkconfig keepalived on 3.MySQL安装前的准备工作 需要的软件： boost_1_59_0.tar.gz，cmake-3.6.1.tar.gz，mysql-5.7.22.tar.gz 4.开始安装MySQL 4.1 安装cmake \[root@oracle cmake-3.6.1\]# ./bootstrap \&\& make \&\& make install 4.2 开始编译安装MySQL 创建用户和组 \[root@oracle cmake-3.6.1\]#groupadd mysql \[root@oracle cmake-3.6.1\]#useradd -g mysql -s /sbin/nologin -M mysql 创建安装数据库的目录和数据存放目录 \[root@oracle src\]# mkdir mysql5 \[root@oracle src\]# mkdir mysql 解压数据库软件 \[root@oracle src\]# tar -xvf mysql-5.7.22.tar.gz \[root@oracle mysql-5.7.22\]# cmake . -DCMAKE_INSTALL_PREFIX=/usr/local/mysql -DMYSQL_DATADIR=/data -DMYSQL_UNIX_ADDR=/tmp/mysql.sock -DWITH_INNOBASE_STORAGE_ENGINE=1 -DMYSQL_TCP_PORT=13306 -DEXTRA_CHARSETS=all -DDEFAULT_CHARSET=utf8 -DDEFAULT_COLLATION=utf8_general_ci -DWITH_DEBUG=0 -DWITH_BOOST=/usr/local/boost 出现报错，这个的解决方法是： 在/usr/local下创建一个名为boost的文件夹 mkdir -p /usr/local/boost 把上面的名为boost_1_59_0.tar.gz的压缩包解压就可以了 tar -xvf boost_1_59_0.tar.gz 继续CMAKE 这里要注意红色的部分 \[root@oracle src\]# cmake . -DCMAKE_INSTALL_PREFIX=/data/src/mysql -DMYSQL_DATADIR=/data/src/mysql5 -DMYSQL_UNIX_ADDR=/tmp/mysql.sock -DWITH_INNOBASE_STORAGE_ENGINE=1 -DMYSQL_TCP_PORT=3306 -DEXTRA_CHARSETS=all -DDEFAULT_CHARSET=utf8 -DWITH_BOOST=/usr/local/boost -DDEFAULT_COLLATION=utf8_general_ci -DWITH_DEBUG=0 这是根据刚才按装的路径添加的 看到上面的信息就证明cmake 成功了 \[root@oracle mysql-5.7.22\]# make \&\& make install 5.配置MySQL服务及开机自启动 \[root@oracle mysql-5.7.22\]# cp support-files/mysql.server /etc/init.d/mysqld \[root@oracle mysql-5.7.22\]# chmod +x /etc/init.d/mysqld \[root@oracle mysql-5.7.22\]# chkconfig --add mysqld 6.进行MySQL初始化 备份： tar -cvf mysql.tar mysql 创建相关目录： cd /var/log mkdir mysql chown -R mysql:mysql mysql chmod -R 755 mysql cd /var/lib mkdir mysql chown -R mysql:mysql mysql chmod -R 755 mysql 初始化MySQL数据库 bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/data 环境变量设置： export PATH=$PATH:/usr/local/mysql/bin 设置启动服务： cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld chown mysql:mysql /etc/init.d/mysqld chmod 755 /etc/init.d/mysqld 节点一： \[mysql@h01142 mysql\]$ bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/data 2024-06-07T11:55:19.835534Z 0 \[Warning\] Changed limits: max_open_files: 1024 (requested 5000) 2024-06-07T11:55:19.835610Z 0 \[Warning\] Changed limits: table_open_cache: 431 (requested 2000) 2024-06-07T11:55:19.835740Z 0 \[Warning\] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details). 2024-06-07T11:55:20.337311Z 0 \[Warning\] InnoDB: New log files created, LSN=45790 2024-06-07T11:55:20.460416Z 0 \[Warning\] InnoDB: Creating foreign key constraint system tables. 2024-06-07T11:55:20.588781Z 0 \[Warning\] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: a73f1ac8-6a49-11e8-b713-a0369fa17118. 2024-06-07T11:55:20.597877Z 0 \[Warning\] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened. 2024-06-07T11:55:20.598535Z 1 \[Note\] A temporary password is generated for root@localhost: ideEjBtk#4hl \[mysql@h01142 mysql\]$ 节点二： \[mysql@h01141 mysql\]$ bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/data 2024-06-07T11:31:31.464259Z 0 \[Warning\] Changed limits: max_open_files: 1024 (requested 5000) 2024-06-07T11:31:31.464335Z 0 \[Warning\] Changed limits: table_open_cache: 431 (requested 2000) 2024-06-07T11:31:31.464465Z 0 \[Warning\] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details). 2024-06-07T11:31:31.915747Z 0 \[Warning\] InnoDB: New log files created, LSN=45790 2024-06-07T11:31:32.035531Z 0 \[Warning\] InnoDB: Creating foreign key constraint system tables. 2024-06-07T11:31:32.077875Z 0 \[Warning\] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: 53c9a388-6a46-11e8-8ae2-a0369fa17b14. 2024-06-07T11:31:32.078552Z 0 \[Warning\] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened. 2024-06-07T11:31:32.079526Z 1 \[Note\] A temporary password is generated for root@localhost: uu0cjLYa\>Ph\* \[mysql@h01141 mysql\]$ 7.配置文件 vi my.cnf \[mysqld
datadir=/data
socket=/var/lib/mysql/mysql.sock
Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
Settings user and group are ignored when systemd is used.
If you need to run mysqld under a different user or group,
customize your systemd unit file for mariadb according to the
instructions in http://fedoraproject.org/wiki/Systemd
mysqld_safe
log-error=/var/log/mysql/mysql.log
pid-file=/var/run/mysql/mysql.pid
include all files from the config directory
!includedir /etc/my.cnf.d
~
创建软连接：
ln -s /var/lib/mysql/mysql.sock /tmp/mysql.sock
登录mysql：
mysql -uroot -p
设置初始密码：
set password=password('Nx_123456!H');
root用户赋权：
create user 'repl'@'%' identified by 'Nx_123456!H';
grant all privileges on *.* to 'root'@'%' identified by 'Nx_123456!H';
grant all privileges on *.* to 'mysql'@'%' identified by 'Nx_123456!H';
mysql -uroot -pNx_123456!H
测试连接：
mysql -uroot -p'Nx_123456!H' -h192.168.217.64 -P13306
mysql -uroot -p'Nx_123456!H' -h192.168.217.33 -P13306
mysql -uroot -p'Nx_123456!H' -h192.168.217.34 -P13306
mysql -urepl -p'Nx_123456!H' -h192.168.217.64 -P13306
mysql -urepl -p'Nx_123456!H' -h192.168.217.33 -P13306
mysql -urepl -p'Nx_123456!H' -h192.168.217.34 -P13306
8.配置双活
use mysql;
set password=password('Nx_123456!H');
set passwd for 'repl'@'localhost'=password('Nx_123456!H');
创建备份用户
在A机上执行
两个节点执行：
grant replication slave on *.* to 'repl'@'%' identified by 'Nx_123456!H';
flush privileges;
9.双活配置文件
vi /etc/hosts
192.168.217.33 h01142
192.168.217.34 h01141
192.168.217.64 swid-mysql
节点一：
mysqld
basedir=/usr/local/mysql/
datadir=/data
socket=/var/lib/mysql/mysql.sock
user=mysql
port=13306
server-id=33
#skip-grant-tables
Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
#bind-address = 127.0.0.1
log_bin = /var/log/mysql/mysql-bin.log
expire_logs_days = 10
max_binlog_size = 100M
#binlog_do_db = include_database_name
binlog_ignore_db = mysql
binlog_ignore_db = information_schema
binlog_ignore_db = performance_schema
log-slave-updates
sync_binlog=0
auto-increment-increment= 2
auto-increment-offset = 1
sql_mode=STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
mysqld_safe
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
增加部分：
basedir=/usr/local/mysql/
user=mysql
port=13306
server-id=33
#bind-address = 127.0.0.1
log_bin = /var/log/mysql/mysql-bin.log
expire_logs_days = 10
max_binlog_size = 100M
#binlog_do_db = include_database_name
binlog_ignore_db = mysql
binlog_ignore_db = information_schema
binlog_ignore_db = performance_schema
log-slave-updates
sync_binlog=0
auto-increment-increment= 2
auto-increment-offset = 1
sql_mode=STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
节点二：
mysqld
basedir=/usr/local/mysql
datadir=/data
socket=/var/lib/mysql/mysql.sock
user=mysql
port=13306
server-id=34
#skip-grant-tables
Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
#bind-address = 127.0.0.1
server-id = 118
log_bin = /var/log/mysql/mysql-bin.log
expire_logs_days = 10
max_binlog_size = 100M
#binlog_do_db = include_database_name
binlog_ignore_db = mysql
binlog_ignore_db = information_schema
binlog_ignore_db = performance_schema
log-slave-updates
sync_binlog=0
auto-increment-increment = 2
auto-increment-offset = 2
sql_mode=STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
mysqld_safe
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
增加部分：
mysqld
basedir=/usr/local/mysql
user=mysql
port=13306
server-id=34
#bind-address = 127.0.0.1
server-id = 118
log_bin = /var/log/mysql/mysql-bin.log
expire_logs_days = 10
max_binlog_size = 100M
#binlog_do_db = include_database_name
binlog_ignore_db = mysql
binlog_ignore_db = information_schema
binlog_ignore_db = performance_schema
log-slave-updates
sync_binlog=0
auto-increment-increment = 2
auto-increment-offset = 2
sql_mode=STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
注意：
建立log_bin响应目录
并赋权
chown -R mysql:mysql mysql/
chmod 755 mysql/
重启两个节点mysql服务
192.168.217.33 H01142
192.168.217.34 H01141
192.168.217.64 swid-mysql
同步数据库：
在A机上执行
--创建数据库
create database testdb default charset utf8;
--切换数据库
use testdb;
--创建测试表
create table DM_TEST(
ID INT AUTO_INCREMENT PRIMARY KEY,
NAME VARCHAR(100)
);
--插入测试数据
insert DM_TEST(NAME) values('user1');
insert DM_TEST(NAME) values('user2');
--将表设定为只读
FLUSH TABLES WITH READ LOCK;
--显示表日志情况
show master status\G
--备份数据库
mysqldump --master-data -uroot -p testdb > /home/mysql/testdb.sql
scp testdb.sql 192.168.217.34:/home/mysql
Nx_123456!H
在B机上执行
--创建数据库
create database testdb default charset utf8;
--恢复数据库
mysql -uroot -p testdb < /home/mysql/testdb.sql
--设定初始日志
change master to master_host='192.168.217.33',
master_user='repl',
master_password='Nx_123456!H',
master_log_file='mysql-bin.000002',
master_log_pos=2328;
--启动同步
start slave;
--锁定表
FLUSH TABLES WITH READ LOCK;
--显示表日志情况
show master status\G
在A机上执行
--解除只读
unlock tables;
--锁定表
change master to master_host='192.168.217.34',
master_user='repl',
master_password='Nx_123456!H',
master_log_file='mysql-bin.000002',
master_log_pos=2122;
--启动同步
start slave;
在B机上执行
--解除只读
unlock tables;
分别在两台机器上执行以下命令查看从服务器状态
mysql> show slave status\G;
确认Slave_IO_Running、Slave_SQL_Running为Yes状态。