mysql + MHA + atlas availability separate read and write (using the scene into the production environment)

Prepared four servers

First: c7m01 10.0.0.12 mysql-master

Second stage: c7s02 10.0.0.13 mysql-slave (standby master) slave01

Third stage: c7s03 10.0.0.14 mysql-slave slave02

Radio 4: c7a04 10.0.0.15 mha + atlas

vip 10.0.0.100 bound to mysql-master

Four servers to perform the same operation, time synchronization

 

[root@ localhost ~]# echo "*/5* * * * /usr/sbin/ntpdate ntp1.aliyun.com >/dev/null 2>&1" >>/var/spool/cron/root

 

Modify the host name of the four servers

mysql-master main

 

[root@ localhost ~]# vim /etc/hostname

c7m01

 

mysql-slave from (standby master)

 

[root@ localhost ~]# vim /etc/hostname 

c7s02

 

mysql-slave from

 

[root@ localhost ~]# vim /etc/hostname 

c7s03

 

mha + atlas (separate read and write)

 

[root@ localhost ~]# vim /etc/hostname 

c7a04

 

Note: The host name changes need to reboot after completion, it will not take effect

Configure the hosts in the mysql-master mysql-slave resolve (the host name to the host name and their correspondence)

 

[root@ c7m01 ~]# vim /etc/hostEOF

C7m01   10.0 . 0.12 
C7s02   10.0 . 0.13 
C7s03   10.0 . 0.14
           

Turn off the firewall and selinux (four servers to perform the same operation)

 

systemctl stop firewalld

 

systemctl disable firewalld

 

setenforce 0

 

[root@ c7m01 ~]# sed -i ' /^SELINUX/s#enforcing#disabled#g' /etc/selinux/config

Configure a free confidential login (four servers have to perform, here I wrote a shell script)

 

[root@ c7a04 ~]# vim ssh.sh

#!/bin/bash
yum -y install sshpass &> / dev / null 
the Read -p " Enter the server password: " passwd
UserName=root
IP="10.0.0."
# Create the key
ssh-keygen -t dsa -f ~/.ssh/id_dsa -P "" &>/dev/null
# Distribute a public key
for I in  12 is  13 is  14  15    # where the loom to change their IP
   do 
    sshpass -p " $ the passwd " SSH-Copy-ID -i ~ / .ssh / id_dsa.pub -p 22 is -o $ StrictHostKeyChecking UserName = NO IP & $ i $ @> / dev / null 
DONE

 

Execute scripts (four servers must execute the script), and then try to connect one of the servers, if there is no secret free login, that is success

 

 mysql installation yum repo (three servers performing the same operation c7m01, c7s02, c7s03)

[root@ c7m01 ~]# wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm

[root@ c7m01 ~]# rpm -ivh mysql-community-release-el7-5.noarch.rpm

[root@ c7m01 ~]# yum -y install mysql-server

Start MySQL, c7m01, c7s02, c7s03 three servers to perform the same operation