MySQL+Altas
【参考文档：https://www.cnblogs.com/MENGSHIYU/p/12061176.html】
环境说明
服务器：centos 7.0
MySQL：5.7.29
MySQL一主一从
Altas：2.2.1
服务器主机名：服务器IP：作用
bre01 192.168.248.129 Altas
bre02 192.168.248.130 MySQL主库
bre03 192.168.248.131 MySQL从库
1.MySQL部署（两台MySQL服务器操作）
[root@bre02 ~]# useradd mysql
[root@bre02 ~]# mkdir /data/mysql/ -p
[root@bre02 ~]# chown -R mysql: /data/mysql
[root@bre02 opt]# tar -xf /opt/mysql-5.7.29-linux-glibc2.12-x86_64.tar.gz -C /usr/local/
[root@bre02 opt]# mv /usr/local/mysql-5.7.29-linux-glibc2.12-x86_64/ /usr/local/mysql
[root@bre02 opt]# chown -R mysql: /usr/local/mysql/
[root@bre02 opt]# /usr/local/mysql/bin/mysqld --initialize --user=mysql --datadir=/data/mysql
[root@bre02 opt]# /usr/local/mysql//bin/mysql_ssl_rsa_setup --datadir=/data/mysql
[root@bre02 opt]# cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld
[root@bre02 opt]# /etc/init.d/mysqld start
[root@bre02 opt]# grep password /data/mysql/error.log #查出默认生成密码
[root@bre02 opt]# mysql -uroot -p
root@localhost:(none) 11:35:20> set password=password('root');
[root@bre02 opt]# mysql -uroot -proot #创建主从使用用户 （主库操作）
root@localhost:(none) 11:36:46> grant replication slave,replication client on *.* to slave@'192.168.248.131' identified by "slave@123";
root@localhost:(none) 11:39:10> grant all privileges on *.* to wjht@'%' identified by 'root123';
root@localhost:(none) 11:38:24> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000002 | 1751 | | | |
+------------------+----------+--------------+------------------+-------------------+
[root@bre03 opt]# mysql -uroot -proot #创建主从架构 （从库操作）
root@localhost:(none) 11:51:30> CHANGE MASTER TO MASTER_HOST='192.168.248.130',MASTER_USER='slave',MASTER_PASSWORD='slave@123',MASTER_PORT=3306,MASTER_LOG_FILE='mysql-bin.000002',MASTER_LOG_POS=1751;
root@localhost:(none) 11:53:34> start slave;
Altas 安装
[root@bre01 ~]# wget https://github.com/Qihoo360/Atlas/releases/download/2.2.1/Atlas-2.2.1.el6.x86_64.rpm
[root@bre01 ~]# rpm -ivh Atlas-2.2.1.el6.x86_64.rpm #默认安装路径为：/usr/local/mysql-proxy/
修改altas的配置文件
[root@bre04 mysql-proxy]# cd /usr/local/mysql-proxy/conf/;cp test.cnf test.cnf.bak
使用encrypt 生成密码加密文
[root@bre01 bin]# ./encrypt 123456
/iZxz+0GRoA=
[root@bre04 mysql-proxy]# vim test.cnf
[mysql-proxy]
#带#号的为非必需的配置项目
#管理接口的用户名
admin-username=user
#管理接口的密码
admin-password=pwd
#Atlas后端连接的MySQL主库的IP和端口，可设置多项，用逗号分隔
proxy-backend-addresses=192.168.248.130:3306
#Atlas后端连接的MySQL从库的IP和端口，@后面的数字代表权重，用来作负载均衡，若省略则默认为1，可设置多项，用逗号分隔
#proxy-read-only-backend-addresses = 192.168.248.131:3306@1
#用户名与其对应的加密过的MySQL密码，密码使用PREFIX/bin目录下的加密程序encrypt加密，下行的user1和user2为示例，将其替换为你的MySQL的用户名和加密密码！
pwds=wjht:wnOkwXC7jkU=
#设置Atlas的运行方式，设为true时为守护进程方式，设为false时为前台方式，一般开发调试时设为false，线上运行时设为true,true后面不能有空格。
daemon=true
#设置Atlas的运行方式，设为true时Atlas会启动两个进程，一个为monitor，一个为worker，monitor在worker意外退出后会自动将其重启，设为false时只有worker，没有monitor，一般开发调试时设为false，线上运行时设为true,true后面不能有空格。keepalive=true
#工作线程数，对Atlas的性能有很大影响，可根据情况适当设置
event-threads=8
#日志级别，分为message、warning、critical、error、debug五个级别
log-level=message
#日志存放的路径
log-path=/usr/local/mysql-proxy/log
#SQL日志的开关，可设置为OFF、ON、REALTIME，OFF代表不记录SQL日志，ON代表记录SQL日志，REALTIME代表记录SQL日志且实时写入磁盘，默认为OFF
#sql-log = OFF
#慢日志输出设置。当设置了该参数时，则日志只输出执行时间超过sql-log-slow（单位：ms)的日志记录。不设置该参数则输出全部日志。
#sql-log-slow = 10
#实例名称，用于同一台机器上多个Atlas实例间的区分
#instance = test
#Atlas监听的工作接口IP和端口(对外提供)
proxy-address=0.0.0.0:3306
#Atlas监听的管理接口IP和端口
admin-address=0.0.0.0:2345
#分表设置，此例中person为库名，mt为表名，id为分表字段，3为子表数量，可设置多项，以逗号分隔，若不分表则不需要设置该项
#tables = person.mt.id.3
#默认字符集，设置该项后客户端不再需要执行SET NAMES语句
#charset = utf8
#允许连接Atlas的客户端的IP，可以是精确IP，也可以是IP段，以逗号分隔，若不设置该项则允许所有IP连接，否则只允许列表中的IP连接
#client-ips = 127.0.0.1, 192.168.1
#Atlas前面挂接的LVS的物理网卡的IP(注意不是虚IP)，若有LVS且设置了client-ips则此项必须设置，否则可以不设置
#lvs-ips = 192.168.1.1
[root@bre01 conf]# /usr/local/mysql-proxy/bin/mysql-proxyd test start
[root@bre01 conf]# mysql -uuser -ppwd -h192.168.248.129 -P
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.0.99-agent-admin
Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> select * from help;
+----------------------------+---------------------------------------------------------+
| command | description |
+----------------------------+---------------------------------------------------------+
| SELECT * FROM help | shows this help |
| SELECT * FROM backends | lists the backends and their state |
| SET OFFLINE $backend_id | offline backend server, $backend_id is backend_ndx's id |
| SET ONLINE $backend_id | online backend server, ... |
| ADD MASTER $backend | example: "add master 127.0.0.1:3306", ... |
| ADD SLAVE $backend | example: "add slave 127.0.0.1:3306", ... |
| REMOVE BACKEND $backend_id | example: "remove backend 1", ... |
| SELECT * FROM clients | lists the clients |
| ADD CLIENT $client | example: "add client 192.168.1.2", ... |
| REMOVE CLIENT $client | example: "remove client 192.168.1.2", ... |
| SELECT * FROM pwds | lists the pwds |
| ADD PWD $pwd | example: "add pwd user:raw_password", ... |
| ADD ENPWD $pwd | example: "add enpwd user:encrypted_password", ... |
| REMOVE PWD $pwd | example: "remove pwd user", ... |
| SAVE CONFIG | save the backends to config file |
| SELECT VERSION | display the version of Atlas |
+----------------------------+---------------------------------------------------------+
mysql> select * from help;
+----------------------------+---------------------------------------------------------+
| command | description |
+----------------------------+---------------------------------------------------------+
| SELECT * FROM help | 查看帮助 |
| SELECT * FROM backends | 查看后端数据库 |
| SET OFFLINE $backend_id | 平滑下线DB，set offline 2; |
| SET ONLINE $backend_id | 平滑下线DB，set offline 2; |
| ADD MASTER $backend | 添加主库: "add master 127.0.0.1:3306" |
| ADD SLAVE $backend | 添加从库: "add slave 127.0.0.1:3306" |
| REMOVE BACKEND $backend_id | 摘除后端数据库: "remove backend 1" |
| SELECT * FROM clients | 查看可登陆的客户端 |
| ADD CLIENT $client | 添加客户端: "add client 192.168.1.2" |
| REMOVE CLIENT $client | 删除客户端: "remove client 192.168.1.2" |
| SELECT * FROM pwds | 查看用户名和密码 |
| ADD PWD $pwd | 添加用户和密码: "add pwd root:123", 自动加密 |
| ADD ENPWD $pwd | 添加用户和密码: "add enpwd root:wnOkwXC7jkU=", 手动加密 |
| REMOVE PWD $pwd | 删除用户: "remove pwd root", |
| SAVE CONFIG | 保存配置到配置文件 |
| SELECT VERSION | 查看版本号 |
+----------------------------+---------------------------------------------------------+
mysql> SELECT * FROM backends;
+-------------+----------------------+-------+------+
| backend_ndx | address | state | type |
+-------------+----------------------+-------+------+
| 1 | 192.168.248.130:3306 | up | rw |
| 2 | 192.168.248.131:3306 | up | ro |
+-------------+----------------------+-------+------+
mysql> select * from pwds;
+----------+--------------+
| username | password |
+----------+--------------+
| wjht | wnOkwXC7jkU= |
+----------+--------------+
mysql> add pwd wj:root123;
mysql> select * from pwds;
+----------+--------------+
| username | password |
+----------+--------------+
| wjht | wnOkwXC7jkU= |
| wj | wnOkwXC7jkU= |
+----------+--------------+
mysql> select version;
+---------+
| version |
+---------+
| 2.2.1 |
+---------+
#平滑下线DB-2
mysql> set offline 2; 【主从还是好的，offline只是说atlas不忘2号库分配】
+-------------+----------------------+---------+------+
| backend_ndx | address | state | type |
+-------------+----------------------+---------+------+
| 2 | 192.168.248.131:3306 | offline | ro |
+-------------+----------------------+---------+------+
1 row in set (0.00 sec)
mysql> select * from backends;
+-------------+----------------------+---------+------+
| backend_ndx | address | state | type |
+-------------+----------------------+---------+------+
| 1 | 192.168.248.130:3306 | up | rw |
| 2 | 192.168.248.131:3306 | offline | ro |
+-------------+----------------------+---------+------+
#平滑上线DB-2
mysql> set online 2;
+-------------+----------------------+---------+------+
| backend_ndx | address | state | type |
+-------------+----------------------+---------+------+
| 2 | 192.168.248.131:3306 | unknown | ro |
+-------------+----------------------+---------+------+
1 row in set (0.00 sec)
mysql> select * from backends;
+-------------+----------------------+-------+------+
| backend_ndx | address | state | type |
+-------------+----------------------+-------+------+
| 1 | 192.168.248.130:3306 | up | rw |
| 2 | 192.168.248.131:3306 | up | ro |
+-------------+----------------------+-------+------+
2 rows in set (0.00 sec)
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