这篇文章主要为大家展示了“怎么用xtrabackup工具创建slave节点”，内容简而易懂，条理清晰，希望能够帮助大家解决疑惑，下面让小编带领大家一起研究并学习一下“怎么用xtrabackup工具创建slave节点”这篇文章吧。
xtrabackup安装和备份方法等请先参考我的另一篇博客 http://blog.itpub.net/20893244/viewspace-2133530/
环境:
master ip：192.168.3.171
slave ip: 192.168.3.173
mysql版本：
(root@localhost) [gldb]> select version();
+————+
| version() |
+————+
| 5.7.17-log |
+————+
1 row in set (0.00 sec)
用xtrabackup工具创建slave节点需要七步骤，我们一步一步操作
一.在master节点完整备份数据
-
innobackupex –defaults-file=/etc/my.cnf –host=oracle11gtest –user=xtrabk –parallel=4 –password=onlybackupgl –extra-lsndir=/alidata1/mysqlbackup/mysql_full –stream=tar /tmp | gzip > /alidata1/mysqlbackup/mysql_full/xtra_fullbak_2017-02-20.tar.gz
二.复制和准备备份集
1.把备份集拷贝到slave端
-
scp -r /alidata1/mysqlbackup/mysql_full [email protected]:/alidata1/mysqldata/mysqlbackup
2.在slave端解压备份集
-
tar -xzvf xtra_fullbak_2017-02-20.tar
3.准备数据，执行innobackupex命令附加–apply-log参数
-
innobackupex –apply-log /alidata1/mysqldata/mysqlbackup/mysql_full
三.创建复制环境专用账户并赋予权限
-
create user repl@’192.168.3.173′;
-
grant replication slave on *.* to repl identified by ‘replmysql’;
四.配置slave节点的初始化参数
从master端拷贝到slave端，还是用scp命令；
在slave端修改初始化文件,把server_id修改为一个非0的值
启动数据库
-
mysqld_safe –defaults-file=/etc/my.cnf &
五.配置slave节点复制环境
查看xtrabackup_binlog_info文件里的数据
-
[root@mysqltest mysql_full]# more xtrabackup_binlog_info
-
mysql-bin.000016 1884
执行change masger命令
-
change master to
-
master_host=’192.168.3.171′,
-
master_port=3306,
-
master_user=’repl’,
-
master_password=’replmysql’,
-
master_log_file=’mysql-bin.000016′,
-
master_log_pos=1884;
执行start slave命令
-
mysql > start slave;
六.检查
-
(root@localhost) [(none)]> show slave status \\G;
-
*************************** 1. row ***************************
-
Slave_IO_State: Waiting for master to send event
-
Master_Host: 192.168.3.171
-
Master_User: repl
-
Master_Port: 3306
-
Connect_Retry: 60
-
Master_Log_File: mysql-bin.000016
-
Read_Master_Log_Pos: 3631
-
Relay_Log_File: mysqltest-relay-bin.000002
-
Relay_Log_Pos: 2067
-
Relay_Master_Log_File: mysql-bin.000016
-
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: 3631
-
Relay_Log_Space: 2278
-
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: 2
-
Master_UUID: 659e33c7-f1ef-11e6-8e3e-00163e3225da
-
Master_Info_File: /alidata1/mysqldata/3306/data/master.info
-
SQL_Delay: 0
-
SQL_Remaining_Delay: NULL
-
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
-
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
-
Replicate_Rewrite_DB:
-
Channel_Name:
-
Master_TLS_Version:
-
1 row in set (0.00 sec)
七.测试
在master端创建一个表
-
(root@localhost) [(none)]> use gldb
-
Database changed
-
(root@localhost) [gldb]> create table gl (abcd varchar(20));
-
Query OK, 0 rows affected (0.51 sec)
在slave端查询是否通过成功
-
(root@localhost) [(none)]> use gldb;
-
Database changed
-
(root@localhost) [gldb]> show create table gl;
-
+——-+——————————————————————————————–+
-
| Table | Create Table |
-
+——-+——————————————————————————————–+
-
| gl | CREATE TABLE `gl` (
-
`abcd` varchar(20) DEFAULT NULL
-
) ENGINE=InnoDB DEFAULT CHARSET=utf8 |
-
+——-+——————————————————————————————–+
-
1 row in set (0.00 sec)
同步成功~~~
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