linux6.4搭建mysql主从复制
1 复制概述
Mysql内建的复制功能是构建大型，高性能应用程序的基础。将Mysql的数据分布到多个系统上去，这种分布的机制，是通过将Mysql的某一台主机的数据复制到其它主机（slaves）上，并重新执行一遍来实现的。复制过程中一个服务器充当主服务器，而一个或多个其它服务器充当从服务器。主服务器将更新写入二进制日志文件，并维护文件的一个索引以跟踪日志循环。这些日志可以记录发送到从服务器的更新。当一个从服务器连接主服务器时，它通知主服务器从服务器在日志中读取的最后一次成功更新的位置。从服务器接收从那时起发生的任何更新，然后封锁并等待主服务器通知新的更新。
（１）：基于语句的复制： 在主服务器上执行的SQL语句，在从服务器上执行同样的语句。MySQL默认采用基于语句的复制，效率比较高。
一旦发现没法精确复制时， 会自动选着基于行的复制。
（２）：基于行的复制：把改变的内容复制过去，而不是把命令在从服务器上执行一遍. 从mysql5.0开始支持
（３）：混合类型的复制: 默认采用基于语句的复制，一旦发现基于语句的无法精确的复制时，就会采用基于行的复制。
1.2 . 复制解决的问题
MySQL复制技术有以下一些特点：
(1) 数据分布 (Data distribution )
(2) 负载平衡(load balancing)
(3) 备份(Backups)
(4) 高可用性和容错行 High availability and failover
1.3 复制如何工作
整体上来说，复制有3个步骤：
(1) master将改变记录到二进制日志(binary log)中（这些记录叫做二进制日志事件，binary log events）；
(2) slave将master的binary log events拷贝到它的中继日志(relay log)；
(3) slave重做中继日志中的事件，将改变反映它自己的数据。
环境准备：
192.168.20.10 master
192.168.20.11 slave
第一、主机上安装mysql
1、查看是否默认安装了mysql
[root@master ~]# rpm -qa|grep mysql
libdbi-dbd-mysql-0.8.3-5.1.el6.x86_64
mysql-libs-5.1.66-2.el6_3.x86_64
mysql-bench-5.1.66-2.el6_3.x86_64
mysql-connector-java-5.1.17-6.el6.noarch
mysql-test-5.1.66-2.el6_3.x86_64
mod_auth_mysql-3.0.0-11.el6_0.1.x86_64
mysql-connector-odbc-5.1.5r1144-7.el6.x86_64
mysql-5.1.66-2.el6_3.x86_64
mysql-devel-5.1.66-2.el6_3.x86_64
php-mysql-5.3.3-22.el6.x86_64
rsyslog-mysql-5.8.10-6.el6.x86_64
mysql-server-5.1.66-2.el6_3.x86_64
qt-mysql-4.6.2-25.el6.x86_64
dovecot-mysql-2.0.9-5.el6.x86_64
2、使用yum卸载mysql
[root@master ~]# yum -y remove mysql-5.1.66-2.el6_3.x86_64
Loaded plugins: aliases, changelog, downloadonly, kabi, presto, product-id, security, subscription-manager, tmprepo, verify,
: versionlock
..........................
Complete!
[root@master ~]# rpm -qa|grep mysql
mysql-libs-5.1.66-2.el6_3.x86_64
mysql-connector-java-5.1.17-6.el6.noarch
mod_auth_mysql-3.0.0-11.el6_0.1.x86_64
mysql-connector-odbc-5.1.5r1144-7.el6.x86_64
php-mysql-5.3.3-22.el6.x86_64
rsyslog-mysql-5.8.10-6.el6.x86_64
qt-mysql-4.6.2-25.el6.x86_64
dovecot-mysql-2.0.9-5.el6.x86_64
[root@master ~]# yum -y remove mysql-libs-5.1.66-2.el6_3.x86_64
.........
Complete!
[root@master ~]# rpm -qa|grep mysql
mysql-connector-java-5.1.17-6.el6.noarch
[root@master ~]# yum -y remove mysql-connector-java-5.1.17-6.el6.noarch
Loaded plugins: aliases, changelog, downloadonly, kabi, presto, product-id, security, subscription-manager, tmprepo, verify,
: versionlock
...........
Complete!
3、主从节点安装mysql：
[root@master install]# ls
MySQL-5.6.37-1.el6.x86_64.rpm-bundle.tar
[root@master install]# tar xvf MySQL-5.6.37-1.el6.x86_64.rpm-bundle.tar
MySQL-shared-5.6.37-1.el6.x86_64.rpm
MySQL-shared-compat-5.6.37-1.el6.x86_64.rpm
MySQL-server-5.6.37-1.el6.x86_64.rpm
MySQL-test-5.6.37-1.el6.x86_64.rpm
MySQL-client-5.6.37-1.el6.x86_64.rpm
MySQL-devel-5.6.37-1.el6.x86_64.rpm
MySQL-embedded-5.6.37-1.el6.x86_64.rpm
[root@master install]# rpm -ivh MySQL-server-5.6.37-1.el6.x86_64.rpm
warning: MySQL-server-5.6.37-1.el6.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing... ########################################### [100%]
1:MySQL-server ########################################### [100%]
2017-07-24 12:01:48 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2017-07-24 12:01:48 0 [Note] Ignoring --secure-file-priv value as server is running with --bootstrap.
2017-07-24 12:01:48 0 [Note] /usr/sbin/mysqld (mysqld 5.6.37) starting as process 36859 ...
2017-07-24 12:01:48 36859 [Note] InnoDB: Using atomics to ref count buffer pool pages
2017-07-24 12:01:48 36859 [Note] InnoDB: The InnoDB memory heap is disabled
2017-07-24 12:01:48 36859 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2017-07-24 12:01:48 36859 [Note] InnoDB: Memory barrier is not used
2017-07-24 12:01:48 36859 [Note] InnoDB: Compressed tables use zlib 1.2.3
2017-07-24 12:01:48 36859 [Note] InnoDB: Using Linux native AIO
2017-07-24 12:01:48 36859 [Note] InnoDB: Using CPU crc32 instructions
2017-07-24 12:01:48 36859 [Note] InnoDB: Initializing buffer pool, size = 128.0M
2017-07-24 12:01:48 36859 [Note] InnoDB: Completed initialization of buffer pool
2017-07-24 12:01:48 36859 [Note] InnoDB: The first specified data file ./ibdata1 did not exist: a new database to be created!
2017-07-24 12:01:48 36859 [Note] InnoDB: Setting file ./ibdata1 size to 12 MB
2017-07-24 12:01:48 36859 [Note] InnoDB: Database physically writes the file full: wait...
2017-07-24 12:01:48 36859 [Note] InnoDB: Setting log file ./ib_logfile101 size to 48 MB
2017-07-24 12:01:48 36859 [Note] InnoDB: Setting log file ./ib_logfile1 size to 48 MB
2017-07-24 12:01:48 36859 [Note] InnoDB: Renaming log file ./ib_logfile101 to ./ib_logfile0
2017-07-24 12:01:48 36859 [Warning] InnoDB: New log files created, LSN=45781
2017-07-24 12:01:48 36859 [Note] InnoDB: Doublewrite buffer not found: creating new
2017-07-24 12:01:48 36859 [Note] InnoDB: Doublewrite buffer created
2017-07-24 12:01:48 36859 [Note] InnoDB: 128 rollback segment(s) are active.
2017-07-24 12:01:48 36859 [Warning] InnoDB: Creating foreign key constraint system tables.
2017-07-24 12:01:48 36859 [Note] InnoDB: Foreign key constraint system tables created
2017-07-24 12:01:48 36859 [Note] InnoDB: Creating tablespace and datafile system tables.
2017-07-24 12:01:48 36859 [Note] InnoDB: Tablespace and datafile system tables created.
2017-07-24 12:01:48 36859 [Note] InnoDB: Waiting for purge to start
2017-07-24 12:01:48 36859 [Note] InnoDB: 5.6.37 started; log sequence number 0
A random root password has been set. You will find it in '/root/.mysql_secret'.
2017-07-24 12:01:49 36859 [Note] Binlog end
2017-07-24 12:01:49 36859 [Note] InnoDB: FTS optimize thread exiting.
2017-07-24 12:01:49 36859 [Note] InnoDB: Starting shutdown...
2017-07-24 12:01:50 36859 [Note] InnoDB: Shutdown completed; log sequence number 1625977
2017-07-24 12:01:50 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2017-07-24 12:01:50 0 [Note] Ignoring --secure-file-priv value as server is running with --bootstrap.
2017-07-24 12:01:50 0 [Note] /usr/sbin/mysqld (mysqld 5.6.37) starting as process 36885 ...
2017-07-24 12:01:50 36885 [Note] InnoDB: Using atomics to ref count buffer pool pages
2017-07-24 12:01:50 36885 [Note] InnoDB: The InnoDB memory heap is disabled
2017-07-24 12:01:50 36885 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2017-07-24 12:01:50 36885 [Note] InnoDB: Memory barrier is not used
2017-07-24 12:01:50 36885 [Note] InnoDB: Compressed tables use zlib 1.2.3
2017-07-24 12:01:50 36885 [Note] InnoDB: Using Linux native AIO
2017-07-24 12:01:50 36885 [Note] InnoDB: Using CPU crc32 instructions
2017-07-24 12:01:50 36885 [Note] InnoDB: Initializing buffer pool, size = 128.0M
2017-07-24 12:01:50 36885 [Note] InnoDB: Completed initialization of buffer pool
2017-07-24 12:01:50 36885 [Note] InnoDB: Highest supported file format is Barracuda.
2017-07-24 12:01:50 36885 [Note] InnoDB: 128 rollback segment(s) are active.
2017-07-24 12:01:50 36885 [Note] InnoDB: Waiting for purge to start
2017-07-24 12:01:50 36885 [Note] InnoDB: 5.6.37 started; log sequence number 1625977
2017-07-24 12:01:50 36885 [Note] Binlog end
2017-07-24 12:01:50 36885 [Note] InnoDB: FTS optimize thread exiting.
2017-07-24 12:01:50 36885 [Note] InnoDB: Starting shutdown...
2017-07-24 12:01:52 36885 [Note] InnoDB: Shutdown completed; log sequence number 1625987
A RANDOM PASSWORD HAS BEEN SET FOR THE MySQL root USER !
You will find that password in '/root/.mysql_secret'.
You must change that password on your first connect,
no other statement but 'SET PASSWORD' will be accepted.
See the manual for the semantics of the 'password expired' flag.
Also, the account for the anonymous user has been removed.
In addition, you can run:
/usr/bin/mysql_secure_installation
which will also give you the option of removing the test database.
This is strongly recommended for production servers.
See the manual for more instructions.
Please report any problems at http://bugs.mysql.com/
The latest information about MySQL is available on the web at
http://www.mysql.com
Support MySQL by buying support/licenses at http://shop.mysql.com
New default config file was created as /usr/my.cnf and
will be used by default by the server when you start it.
You may edit this file to change server settings
[root@master install]# rpm -ivh MySQL-client-5.6.37-1.el6.x86_64.rpm
warning: MySQL-client-5.6.37-1.el6.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing... ########################################### [100%]
1:MySQL-client ########################################### [100%]
[root@master mysql]# id mysql
uid=27(mysql) gid=27(mysql) groups=27(mysql)
[root@master mysql]#
第二、配置主从复制
master节点：
修改/etc/my.cnf
[mysqld]
datadir = /u02/mysql
server_id = 1
port = 3306
socket = /var/lib/mysql/mysql.sock
log-error=/u02/mysql/mysqld.log
log-bin = /u02/mysql/master-bin
binlog_format = row
skip-name-resolve
sync_binlog = 1
default_storage_engine = innodb
log_slave_updates = 1
read_only = 0
[root@master mysql]# service mysql start
Starting MySQL.Logging to '/var/lib/mysql/master.err'.
[OK]
新增测试数据：
-bash-4.1$ mysql -p -u root
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 6
Server version: 5.6.37
Copyright (c) 2000, 2017, 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> create database dtxx;
mysql> show databases;
+---------------------+
| Database |
+---------------------+
| information_schema |
| dtxx |
| hello |
| #mysql50#master-bin |
| mysql |
| performance_schema |
| test |
+---------------------+
8 rows in set (0.00 sec)
mysql> use dtxx
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> show tables;
+----------------+
| Tables_in_dtxx |
+----------------+
| test |
+----------------+
1 row in set (0.00 sec)
创建具有复制权限的账号
mysql>grant replication slave on *.* to repluser@'192.168.20.%' identified by 'repluser';
Query OK, 0 rows affected (0.01 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
备份master数据库
[root@master mysql]$ mysqldump --single-transaction --all-databases --master-data=2 > myback.sql #完全备份
[root@master mysql]$scp myback.sql [email protected]:/u02/mysql
配置从库：
[mysqld]
datadir = /u02/mysql
port = 3306
server_id = 2
socket = /var/lib/mysql/mysql.sock
sync_binlog = 1
skip-name-resolve
relay-log = /u02/mysql/slave-relay #启用中继日志
sync_master_info = 1
sync_relay_log = 1
sync_relay_log_info = 1
read_only = on #只读
在从库上恢复主库：
[root@slave ~]# service mysqld start
Starting MySQL SUCCESS!
[root@slave ~]# mysql -p12345 -uroot < myback.sql #先将主库的备份数据恢复至从库
查看备份日志里主库的log_file跟log_pos:
-bash-4.1$ grep "^-- CHANGE" myback.sql
-- CHANGE MASTER TO MASTER_LOG_FILE='master-bin.000004', MASTER_LOG_POS=1361;
使用有复制权限的账号连接master:
mysql> change master to master_host='192.168.20.10',master_user='repluser',master_password='repluser',\
-> master_log_file='master-bin.000004',master_log_pos=1361;
Query OK, 0 rows affected, 2 warnings (0.01 sec)
mysql> start slave;
Query OK, 0 rows affected (0.01 sec)
查看状态：
mysql> show slave status \G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 10.81.35.2
Master_User: repluser
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: master-bin.000004
Read_Master_Log_Pos: 1361
Relay_Log_File: slave-relay.000002
Relay_Log_Pos: 284
Relay_Master_Log_File: master-bin.000004
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 1361
Relay_Log_Space: 453
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 1
Master_UUID: cd2fab5f-7025-11e7-b37c-e8611f1a5ff8
Master_Info_File: /u02/mysql/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0
1 row in set (0.00 sec)
-bash-4.1$ more /u02/mysql/master.info
23
master-bin.000004
1361
10.81.35.2
repluser
repluser
3306
60
0
0
1800.000
0
cd2fab5f-7025-11e7-b37c-e8611f1a5ff8
86400
0
测试：
mysql> create database testdb;
Query OK, 1 row affected (0.00 sec)
mysql> use testdb;
Database changed
mysql> create table students (Name char(30),Gender enum('m','f'));
Query OK, 0 rows affected (0.00 sec)
mysql> show databases;
+---------------------+
| Database |
+---------------------+
| information_schema |
| dtxx |
| #mysql50#master-bin |
| mysql |
| performance_schema |
| test |
| testdb |
+---------------------+
7 rows in set (0.00 sec)
mysql> show tables from testdb;
+------------------+
| Tables_in_testdb |
+------------------+
| students |
+------------------+
1 row in set (0.00 sec)
mysql> show processlist;
+----+----------+--------------------------+--------+-------------+------+-----------------------------------------------------------------------+------------------+
| Id | User | Host | db | Command | Time | State | Info |
+----+----------+--------------------------+--------+-------------+------+-----------------------------------------------------------------------+------------------+
| 16 | repluser | master.cdterp.com:22298 | NULL | Binlog Dump | 195 | Master has sent all binlog to slave; waiting for binlog to be updated | NULL |
| 17 | root | localhost | testdb | Query | 0 | init | show processlist |
+----+----------+--------------------------+--------+-------------+------+-----------------------------------------------------------------------+------------------+
2 rows in set (0.00 sec)
从库：
-bash-4.1$ more /u02/mysql/master.info
23
master-bin.000004
1597
10.81.35.2
repluser
repluser
3306
60
0
0
1800.000
0
cd2fab5f-7025-11e7-b37c-e8611f1a5ff8
86400
0
-bash-4.1$ mysql -p12345 -uroot
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 10
Server version: 5.6.37 MySQL Community Server (GPL)
Copyright (c) 2000, 2017, 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> show slave status \GG
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 10.81.35.2
Master_User: repluser
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: master-bin.000004
Read_Master_Log_Pos: 1597 --这个从1361到了1597
Relay_Log_File: slave-relay.000002
Relay_Log_Pos: 520
Relay_Master_Log_File: master-bin.000004
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 1597
Relay_Log_Space: 689
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 1
Master_UUID: cd2fab5f-7025-11e7-b37c-e8611f1a5ff8
Master_Info_File: /u02/mysql/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0
1 row in set (0.00 sec)
mysql> SHOW DATABASES;
+----------------------+
| Database |
+----------------------+
| information_schema |
| dtxx |
| #mysql50#master-bin |
| mysql |
| performance_schema |
| #mysql50#slave-relay |
| test |
| testdb |
+---------------------+
7 rows in set (0.00 sec)
Mysql内建的复制功能是构建大型，高性能应用程序的基础。将Mysql的数据分布到多个系统上去，这种分布的机制，是通过将Mysql的某一台主机的数据复制到其它主机（slaves）上，并重新执行一遍来实现的。复制过程中一个服务器充当主服务器，而一个或多个其它服务器充当从服务器。主服务器将更新写入二进制日志文件，并维护文件的一个索引以跟踪日志循环。这些日志可以记录发送到从服务器的更新。当一个从服务器连接主服务器时，它通知主服务器从服务器在日志中读取的最后一次成功更新的位置。从服务器接收从那时起发生的任何更新，然后封锁并等待主服务器通知新的更新。
请注意当你进行复制时，所有对复制中的表的更新必须在主服务器上进行。否则，你必须要小心，以避免用户对主服务器上的表进行的更新与对从服务器上的表所进行的更新之间的冲突。
（１）：基于语句的复制： 在主服务器上执行的SQL语句，在从服务器上执行同样的语句。MySQL默认采用基于语句的复制，效率比较高。
一旦发现没法精确复制时， 会自动选着基于行的复制。
（２）：基于行的复制：把改变的内容复制过去，而不是把命令在从服务器上执行一遍. 从mysql5.0开始支持
（３）：混合类型的复制: 默认采用基于语句的复制，一旦发现基于语句的无法精确的复制时，就会采用基于行的复制。
1.2 . 复制解决的问题
MySQL复制技术有以下一些特点：
(1) 数据分布 (Data distribution )
(2) 负载平衡(load balancing)
(3) 备份(Backups)
(4) 高可用性和容错行 High availability and failover
1.3 复制如何工作
整体上来说，复制有3个步骤：
(1) master将改变记录到二进制日志(binary log)中（这些记录叫做二进制日志事件，binary log events）；
(2) slave将master的binary log events拷贝到它的中继日志(relay log)；
(3) slave重做中继日志中的事件，将改变反映它自己的数据。
环境准备：
192.168.20.10 master
192.168.20.11 slave
第一、主机上安装mysql
1、查看是否默认安装了mysql
[root@master ~]# rpm -qa|grep mysql
libdbi-dbd-mysql-0.8.3-5.1.el6.x86_64
mysql-libs-5.1.66-2.el6_3.x86_64
mysql-bench-5.1.66-2.el6_3.x86_64
mysql-connector-java-5.1.17-6.el6.noarch
mysql-test-5.1.66-2.el6_3.x86_64
mod_auth_mysql-3.0.0-11.el6_0.1.x86_64
mysql-connector-odbc-5.1.5r1144-7.el6.x86_64
mysql-5.1.66-2.el6_3.x86_64
mysql-devel-5.1.66-2.el6_3.x86_64
php-mysql-5.3.3-22.el6.x86_64
rsyslog-mysql-5.8.10-6.el6.x86_64
mysql-server-5.1.66-2.el6_3.x86_64
qt-mysql-4.6.2-25.el6.x86_64
dovecot-mysql-2.0.9-5.el6.x86_64
2、使用yum卸载mysql
[root@master ~]# yum -y remove mysql-5.1.66-2.el6_3.x86_64
Loaded plugins: aliases, changelog, downloadonly, kabi, presto, product-id, security, subscription-manager, tmprepo, verify,
: versionlock
..........................
Complete!
[root@master ~]# rpm -qa|grep mysql
mysql-libs-5.1.66-2.el6_3.x86_64
mysql-connector-java-5.1.17-6.el6.noarch
mod_auth_mysql-3.0.0-11.el6_0.1.x86_64
mysql-connector-odbc-5.1.5r1144-7.el6.x86_64
php-mysql-5.3.3-22.el6.x86_64
rsyslog-mysql-5.8.10-6.el6.x86_64
qt-mysql-4.6.2-25.el6.x86_64
dovecot-mysql-2.0.9-5.el6.x86_64
[root@master ~]# yum -y remove mysql-libs-5.1.66-2.el6_3.x86_64
.........
Complete!
[root@master ~]# rpm -qa|grep mysql
mysql-connector-java-5.1.17-6.el6.noarch
[root@master ~]# yum -y remove mysql-connector-java-5.1.17-6.el6.noarch
Loaded plugins: aliases, changelog, downloadonly, kabi, presto, product-id, security, subscription-manager, tmprepo, verify,
: versionlock
...........
Complete!
3、主从节点安装mysql：
[root@master install]# ls
MySQL-5.6.37-1.el6.x86_64.rpm-bundle.tar
[root@master install]# tar xvf MySQL-5.6.37-1.el6.x86_64.rpm-bundle.tar
MySQL-shared-5.6.37-1.el6.x86_64.rpm
MySQL-shared-compat-5.6.37-1.el6.x86_64.rpm
MySQL-server-5.6.37-1.el6.x86_64.rpm
MySQL-test-5.6.37-1.el6.x86_64.rpm
MySQL-client-5.6.37-1.el6.x86_64.rpm
MySQL-devel-5.6.37-1.el6.x86_64.rpm
MySQL-embedded-5.6.37-1.el6.x86_64.rpm
[root@master install]# rpm -ivh MySQL-server-5.6.37-1.el6.x86_64.rpm
warning: MySQL-server-5.6.37-1.el6.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing... ########################################### [100%]
1:MySQL-server ########################################### [100%]
2017-07-24 12:01:48 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2017-07-24 12:01:48 0 [Note] Ignoring --secure-file-priv value as server is running with --bootstrap.
2017-07-24 12:01:48 0 [Note] /usr/sbin/mysqld (mysqld 5.6.37) starting as process 36859 ...
2017-07-24 12:01:48 36859 [Note] InnoDB: Using atomics to ref count buffer pool pages
2017-07-24 12:01:48 36859 [Note] InnoDB: The InnoDB memory heap is disabled
2017-07-24 12:01:48 36859 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2017-07-24 12:01:48 36859 [Note] InnoDB: Memory barrier is not used
2017-07-24 12:01:48 36859 [Note] InnoDB: Compressed tables use zlib 1.2.3
2017-07-24 12:01:48 36859 [Note] InnoDB: Using Linux native AIO
2017-07-24 12:01:48 36859 [Note] InnoDB: Using CPU crc32 instructions
2017-07-24 12:01:48 36859 [Note] InnoDB: Initializing buffer pool, size = 128.0M
2017-07-24 12:01:48 36859 [Note] InnoDB: Completed initialization of buffer pool
2017-07-24 12:01:48 36859 [Note] InnoDB: The first specified data file ./ibdata1 did not exist: a new database to be created!
2017-07-24 12:01:48 36859 [Note] InnoDB: Setting file ./ibdata1 size to 12 MB
2017-07-24 12:01:48 36859 [Note] InnoDB: Database physically writes the file full: wait...
2017-07-24 12:01:48 36859 [Note] InnoDB: Setting log file ./ib_logfile101 size to 48 MB
2017-07-24 12:01:48 36859 [Note] InnoDB: Setting log file ./ib_logfile1 size to 48 MB
2017-07-24 12:01:48 36859 [Note] InnoDB: Renaming log file ./ib_logfile101 to ./ib_logfile0
2017-07-24 12:01:48 36859 [Warning] InnoDB: New log files created, LSN=45781
2017-07-24 12:01:48 36859 [Note] InnoDB: Doublewrite buffer not found: creating new
2017-07-24 12:01:48 36859 [Note] InnoDB: Doublewrite buffer created
2017-07-24 12:01:48 36859 [Note] InnoDB: 128 rollback segment(s) are active.
2017-07-24 12:01:48 36859 [Warning] InnoDB: Creating foreign key constraint system tables.
2017-07-24 12:01:48 36859 [Note] InnoDB: Foreign key constraint system tables created
2017-07-24 12:01:48 36859 [Note] InnoDB: Creating tablespace and datafile system tables.
2017-07-24 12:01:48 36859 [Note] InnoDB: Tablespace and datafile system tables created.
2017-07-24 12:01:48 36859 [Note] InnoDB: Waiting for purge to start
2017-07-24 12:01:48 36859 [Note] InnoDB: 5.6.37 started; log sequence number 0
A random root password has been set. You will find it in '/root/.mysql_secret'.
2017-07-24 12:01:49 36859 [Note] Binlog end
2017-07-24 12:01:49 36859 [Note] InnoDB: FTS optimize thread exiting.
2017-07-24 12:01:49 36859 [Note] InnoDB: Starting shutdown...
2017-07-24 12:01:50 36859 [Note] InnoDB: Shutdown completed; log sequence number 1625977
2017-07-24 12:01:50 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2017-07-24 12:01:50 0 [Note] Ignoring --secure-file-priv value as server is running with --bootstrap.
2017-07-24 12:01:50 0 [Note] /usr/sbin/mysqld (mysqld 5.6.37) starting as process 36885 ...
2017-07-24 12:01:50 36885 [Note] InnoDB: Using atomics to ref count buffer pool pages
2017-07-24 12:01:50 36885 [Note] InnoDB: The InnoDB memory heap is disabled
2017-07-24 12:01:50 36885 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2017-07-24 12:01:50 36885 [Note] InnoDB: Memory barrier is not used
2017-07-24 12:01:50 36885 [Note] InnoDB: Compressed tables use zlib 1.2.3
2017-07-24 12:01:50 36885 [Note] InnoDB: Using Linux native AIO
2017-07-24 12:01:50 36885 [Note] InnoDB: Using CPU crc32 instructions
2017-07-24 12:01:50 36885 [Note] InnoDB: Initializing buffer pool, size = 128.0M
2017-07-24 12:01:50 36885 [Note] InnoDB: Completed initialization of buffer pool
2017-07-24 12:01:50 36885 [Note] InnoDB: Highest supported file format is Barracuda.
2017-07-24 12:01:50 36885 [Note] InnoDB: 128 rollback segment(s) are active.
2017-07-24 12:01:50 36885 [Note] InnoDB: Waiting for purge to start
2017-07-24 12:01:50 36885 [Note] InnoDB: 5.6.37 started; log sequence number 1625977
2017-07-24 12:01:50 36885 [Note] Binlog end
2017-07-24 12:01:50 36885 [Note] InnoDB: FTS optimize thread exiting.
2017-07-24 12:01:50 36885 [Note] InnoDB: Starting shutdown...
2017-07-24 12:01:52 36885 [Note] InnoDB: Shutdown completed; log sequence number 1625987
A RANDOM PASSWORD HAS BEEN SET FOR THE MySQL root USER !
You will find that password in '/root/.mysql_secret'.
You must change that password on your first connect,
no other statement but 'SET PASSWORD' will be accepted.
See the manual for the semantics of the 'password expired' flag.
Also, the account for the anonymous user has been removed.
In addition, you can run:
/usr/bin/mysql_secure_installation
which will also give you the option of removing the test database.
This is strongly recommended for production servers.
See the manual for more instructions.
Please report any problems at http://bugs.mysql.com/
The latest information about MySQL is available on the web at
http://www.mysql.com
Support MySQL by buying support/licenses at http://shop.mysql.com
New default config file was created as /usr/my.cnf and
will be used by default by the server when you start it.
You may edit this file to change server settings
[root@master install]# rpm -ivh MySQL-client-5.6.37-1.el6.x86_64.rpm
warning: MySQL-client-5.6.37-1.el6.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing... ########################################### [100%]
1:MySQL-client ########################################### [100%]
[root@master mysql]# id mysql
uid=27(mysql) gid=27(mysql) groups=27(mysql)
[root@master mysql]#
第二、配置主从复制
master节点：
修改/etc/my.cnf
[mysqld]
datadir = /u02/mysql
server_id = 1
port = 3306
socket = /var/lib/mysql/mysql.sock
log-error=/u02/mysql/mysqld.log
log-bin = /u02/mysql/master-bin
binlog_format = row
skip-name-resolve
sync_binlog = 1
default_storage_engine = innodb
log_slave_updates = 1
read_only = 0
[root@master mysql]# service mysql start
Starting MySQL.Logging to '/var/lib/mysql/master.err'.
[OK]
新增测试数据：
-bash-4.1$ mysql -p -u root
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 6
Server version: 5.6.37
Copyright (c) 2000, 2017, 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> create database dtxx;
mysql> show databases;
+---------------------+
| Database |
+---------------------+
| information_schema |
| dtxx |
| hello |
| #mysql50#master-bin |
| mysql |
| performance_schema |
| test |
+---------------------+
8 rows in set (0.00 sec)
mysql> use dtxx
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> show tables;
+----------------+
| Tables_in_dtxx |
+----------------+
| test |
+----------------+
1 row in set (0.00 sec)
创建具有复制权限的账号
mysql>grant replication slave on *.* to repluser@'192.168.20.%' identified by 'repluser';
Query OK, 0 rows affected (0.01 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
备份master数据库
[root@master mysql]$ mysqldump --single-transaction --all-databases --master-data=2 > myback.sql #完全备份
[root@master mysql]$scp myback.sql [email protected]:/u02/mysql
配置从库：
[mysqld]
datadir = /u02/mysql
port = 3306
server_id = 2
socket = /var/lib/mysql/mysql.sock
sync_binlog = 1
skip-name-resolve
relay-log = /u02/mysql/slave-relay #启用中继日志
sync_master_info = 1
sync_relay_log = 1
sync_relay_log_info = 1
read_only = on #只读
在从库上恢复主库：
[root@slave ~]# service mysqld start
Starting MySQL SUCCESS!
[root@slave ~]# mysql -p12345 -uroot < myback.sql #先将主库的备份数据恢复至从库
查看备份日志里主库的log_file跟log_pos:
-bash-4.1$ grep "^-- CHANGE" myback.sql
-- CHANGE MASTER TO MASTER_LOG_FILE='master-bin.000004', MASTER_LOG_POS=1361;
使用有复制权限的账号连接master:
mysql> change master to master_host='192.168.20.10',master_user='repluser',master_password='repluser',\
-> master_log_file='master-bin.000004',master_log_pos=1361;
Query OK, 0 rows affected, 2 warnings (0.01 sec)
mysql> start slave;
Query OK, 0 rows affected (0.01 sec)
查看状态：
mysql> show slave status \G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 10.81.35.2
Master_User: repluser
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: master-bin.000004
Read_Master_Log_Pos: 1361
Relay_Log_File: slave-relay.000002
Relay_Log_Pos: 284
Relay_Master_Log_File: master-bin.000004
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 1361
Relay_Log_Space: 453
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 1
Master_UUID: cd2fab5f-7025-11e7-b37c-e8611f1a5ff8
Master_Info_File: /u02/mysql/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0
1 row in set (0.00 sec)
-bash-4.1$ more /u02/mysql/master.info
23
master-bin.000004
1361
10.81.35.2
repluser
repluser
3306
60
0
0
1800.000
0
cd2fab5f-7025-11e7-b37c-e8611f1a5ff8
86400
0
测试：
mysql> create database testdb;
Query OK, 1 row affected (0.00 sec)
mysql> use testdb;
Database changed
mysql> create table students (Name char(30),Gender enum('m','f'));
Query OK, 0 rows affected (0.00 sec)
mysql> show databases;
+---------------------+
| Database |
+---------------------+
| information_schema |
| dtxx |
| #mysql50#master-bin |
| mysql |
| performance_schema |
| test |
| testdb |
+---------------------+
7 rows in set (0.00 sec)
mysql> show tables from testdb;
+------------------+
| Tables_in_testdb |
+------------------+
| students |
+------------------+
1 row in set (0.00 sec)
mysql> show processlist;
+----+----------+--------------------------+--------+-------------+------+-----------------------------------------------------------------------+------------------+
| Id | User | Host | db | Command | Time | State | Info |
+----+----------+--------------------------+--------+-------------+------+-----------------------------------------------------------------------+------------------+
| 16 | repluser | master.cdterp.com:22298 | NULL | Binlog Dump | 195 | Master has sent all binlog to slave; waiting for binlog to be updated | NULL |
| 17 | root | localhost | testdb | Query | 0 | init | show processlist |
+----+----------+--------------------------+--------+-------------+------+-----------------------------------------------------------------------+------------------+
2 rows in set (0.00 sec)
从库：
-bash-4.1$ more /u02/mysql/master.info
23
master-bin.000004
1597
10.81.35.2
repluser
repluser
3306
60
0
0
1800.000
0
cd2fab5f-7025-11e7-b37c-e8611f1a5ff8
86400
0
-bash-4.1$ mysql -p12345 -uroot
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 10
Server version: 5.6.37 MySQL Community Server (GPL)
Copyright (c) 2000, 2017, 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> show slave status \GG
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 10.81.35.2
Master_User: repluser
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: master-bin.000004
Read_Master_Log_Pos: 1597 --这个从1361到了1597
Relay_Log_File: slave-relay.000002
Relay_Log_Pos: 520
Relay_Master_Log_File: master-bin.000004
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 1597
Relay_Log_Space: 689
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 1
Master_UUID: cd2fab5f-7025-11e7-b37c-e8611f1a5ff8
Master_Info_File: /u02/mysql/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0
1 row in set (0.00 sec)
mysql> SHOW DATABASES;
+----------------------+
| Database |
+----------------------+
| information_schema |
| dtxx |
| #mysql50#master-bin |
| mysql |
| performance_schema |
| #mysql50#slave-relay |
| test |
| testdb |
+---------------------+
7 rows in set (0.00 sec)