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docker安裝mysql主從複製

參與文獻 http://blog.csdn.net/qq362228416/article/details/48569293

docker 安裝mysql主從備份

下載mysql映象  我們獲取最新映象

環境準備如下:

伺服器:  我的伺服器ip: 47.94.175.83  

保證3307埠和3308埠沒有被佔用

在主機上安裝docker之後執行  從官網拉取最新映象

docker pull mysql:latest

準備配置檔案:

命令如下:

   cd /

   touch  my-m.cnf

   touch  my-s.cnf

開始編輯檔案

1,首創創兩個檔案 vi my-m.cnf(主庫配置),vi  my-s.cnf(從庫配置)


my-m.cnf內容如下

# Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA # # The MySQL Community Server configuration file. # # For explanations see # http://dev.mysql.com/doc/mysql/en/server-system-variables.html [client] port = 3306 socket = /var/run/mysqld/mysqld.sock [mysqld_safe] pid-file = /var/run/mysqld/mysqld.pid socket = /var/run/mysqld/mysqld.sock nice = 0 [mysqld] user = mysql pid-file = /var/run/mysqld/mysqld.pid socket = /var/run/mysqld/mysqld.sock port = 3306 basedir = /usr datadir = /var/lib/mysql tmpdir = /tmp lc-messages-dir = /usr/share/mysql explicit_defaults_for_timestamp log-bin = mysql-bin server-id = 1 # Instead of skip-networking the default is now to listen only on # localhost which is more compatible and is not less secure. #bind-address = 127.0.0.1 #log-error = /var/log/mysql/error.log # Recommended in standard MySQL setup sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES # Disabling symbolic-links is recommended to prevent assorted security risks symbolic-links=0 # * IMPORTANT: Additional settings that can override those from this file! # The files must end with '.cnf', otherwise they'll be ignored. # !includedir /etc/mysql/conf.d/
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主要是這兩行,只需要在原來的配置裡面加上就行

log-bin = mysql-bin 
server-id = 1 
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my-s.cnf內容如下

# Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA

#
# The MySQL Community Server configuration file.
#
# For explanations see
# http://dev.mysql.com/doc/mysql/en/server-system-variables.html

[client]
port        = 3306
socket      = /var/run/mysqld/mysqld.sock

[mysqld_safe]
pid-file    = /var/run/mysqld/mysqld.pid
socket      = /var/run/mysqld/mysqld.sock
nice        = 0

[mysqld]
user        = mysql
pid-file    = /var/run/mysqld/mysqld.pid
socket      = /var/run/mysqld/mysqld.sock
port        = 3306
basedir     = /usr
datadir     = /var/lib/mysql
tmpdir      = /tmp
lc-messages-dir = /usr/share/mysql
explicit_defaults_for_timestamp

log-bin = mysql-bin 
server-id = 2

# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
#bind-address   = 127.0.0.1

#log-error  = /var/log/mysql/error.log

# Recommended in standard MySQL setup
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0

# * IMPORTANT: Additional settings that can override those from this file!
#   The files must end with '.cnf', otherwise they'll be ignored.
#
!includedir /etc/mysql/conf.d/
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同樣,主要的是這兩行

log-bin = mysql-bin 
server-id = 2

2,OK,有了配置檔案,就可以啟動MySQL的了,先啟動主庫

$ docker run -d -e MYSQL_ROOT_PASSWORD=admin --name mysql-master -v /soft/my-m.cnf:/etc/mysql/my.cnf -p 3307:3306 mysql
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3,啟動從庫

$ docker run -d -e MYSQL_ROOT_PASSWORD=admin --name mysql-slave -v /soft/my-s.cnf:/etc/mysql/my.cnf -p 3308:3306 mysql
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如圖4所示,連線主庫,並執行以下命令,建立一個使用者用來同步資料

$ GRANT REPLICATION SLAVE ON *.* to 'backup'@'%' identified by '123456';
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5,檢視主庫狀態

$ show master status;
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記住檔案,位置的值,如果沒查到資料,請檢查第一,第二步,配置問題。
我查出來的是mysql-bin.000003,436

如圖6所示,連線到從庫,執行以下命令,設定主庫連結

$ change master to master_host='47.94.175.83',master_user='backup',master_password='123456',
master_log_file='mysql-bin.000003',master_log_pos=436,master_port=3307;
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7,啟動同步

$ start slave;
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8,檢視同步狀態

$ show slave status
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如果看到等待主傳送事件..什麼的就成功了,你現在在主庫上的修改,都會同步到從庫上