MySQL 之 MHA + ProxySQL + keepalived 实现读写分离，高可用（三）

设置Keepalived VIP切换邮件告警

修改keepalived.conf配置：

[root@server01 keepalived]# cat keepalived.conf
! Configuration File for keepalived

global_defs {
     notification_email {
     saltstack@163.com
   }
   notification_email_from dba@dbserver.com
   smtp_server 127.0.0.1
   smtp_connect_timeout 30
   router_id MySQL-HA
}
vrrp_script vs_mysql_100 {
    script "python /etc/keepalived/checkProxySQL.py -h localhost -P 6033"
    interval 5
}
vrrp_instance VI_1 {
    state BACKUP
    nopreempt
    interface eth0
    virtual_router_id 51
    priority 150
    advert_int 1
    nopreempt

    authentication {
    auth_type PASS
    auth_pass 1111
    }
    track_script {
       vs_mysql_100
    }
    virtual_ipaddress {
        10.200.22.178
    }
    notify_master "/etc/keepalived/notify.sh master"
    notify_backup "/etc/keepalived/notify.sh backup"
    notify_fault "/etc/keepalived/notify.sh fault"
}

通知 notify.sh：

#!/bin/bash

contact='root@localhost'

notify() {
    local mailsubject="$(hostname) to be $1, vip floating"
    local mailbody="$(date +'%F %T'): vrrp transition, $(hostname) changed to be $1"
    python /etc/keepalived/sendMail.py "$mailsubject" "$mailbody"
    echo $mailbody >> /etc/keepalived/notify.log
}

case $ in
    master)
        notify master
        ;;
    backup)
        notify backup
        ;;
    fault)
        notify fault
        ;;
    *)
    echo "Usage: $(basename $0) {master|backup|fault}"
    exit
    ;;
esac

发送邮件 sendMail.py：

 #!/usr/bin/python
 # -*- coding: utf- -*-
 # author  xuaiqi
 # date    

 import os
 import time
 import shutil
 import MySQLdb
 import smtplib
 #import requests
 import datetime

 from email.MIMEText import MIMEText
 from email.MIMEImage import MIMEImage
 from email.MIMEMultipart import MIMEMultipart
 from email.MIMEBase import MIMEBase
 from email import Encoders
 from datetime import datetime

 import sys
 default_encoding = 'utf-8'
 if sys.getdefaultencoding() != default_encoding:
     reload(sys)
     sys.setdefaultencoding(default_encoding)

 # email info
 mailserver = "smtp.vcredit.com"
 EMAIL_USERNAME = 'dbmonitor@vcredit.com'
 EMAIL_PASSWORD = 'dbmonitor1234!!'

 title=sys.argv[]
 contents=sys.argv[]

 #发送邮件
 def send_mail(title, to_list):
     me = "dbmonitor@vcredit.com"

     def _create_msg():
         msg = MIMEMultipart('related')
         msg['Subject'] =  title
         msg['From'] = me
         msg['To'] = ';'.join(to_list)
         msg['date'] = '2012-3-16'  #解决邮件发送时间不对
         msg.preamble = 'This is a multi-part message in MIME format.'
         msg_text = MIMEText(contents, 'html','utf-8')
         msg_alternative = MIMEMultipart('alternative')
         msg_alternative.attach(msg_text)
         msg.attach(msg_alternative)
         #print msg
         return msg
     try:
         server = smtplib.SMTP()
         server.connect(mailserver)
         server.login(EMAIL_USERNAME, EMAIL_PASSWORD)
         server.sendmail(me, to_list, _create_msg().as_string())
         server.close()
         print 'send mail Ok!'
     except Exception, e:
         print e

 print"--------------------------------------", datetime.now().strftime('%Y-%m-%d %H:%M:%S'),"Start sending mail --------------------"
 if __name__ == '__main__':
     user=['yujun02@vcredit.com','zhanglin04@vcredit.com','xuaiqi@vcredit.com']
     print "发送的用户",user
     print "内容",contents
     send_mail(title, user)
 print"---------------------------------", datetime.now().strftime('%Y-%m-%d %H:%M:%S'),"Sucessfull sending mail --------------------"

设置MHA切换邮件通知

报告脚本 send_report.py：

 #!/usr/bin/env python
 #-*- encoding:utf- -*-
 #-------------------------------------------------------------------------------
 # Name:        send_report.py
 # Author:      zhoujy
 #----------------------------------------------
 import os
 import sys
 import time
 import datetime
 import smtplib
 import subprocess
 import fileinput
 import getopt
 from email.mime.text import MIMEText
 from email.mime.multipart import MIMEMultipart
 from email.Utils import COMMASPACE, formatdate

 reload(sys)
 sys.setdefaultencoding('utf8')

 def send_mail(to, subject, text, from_mail, server="localhost"):
     message = MIMEMultipart()
     message['From'] = from_mail
     message['To'] = COMMASPACE.join(to)
     message['Date'] = formatdate(localtime=True)
     message['Subject'] = subject
     message.attach(MIMEText(text,_charset='utf-8'))
     smtp = smtplib.SMTP(server)
     smtp.login(from_mail, 'dbmonitor1234!!')
     smtp.sendmail(from_mail, to, message.as_string())
     smtp.close()

 if __name__ == "__main__":
     opts,args = getopt.getopt(sys.argv[:],"h",["orig_master_host=","new_master_host=","new_slave_hosts=","conf=","subject=","body=","app_vip=","new_master_ssh_port=","ssh_user="])
 #    print opts,args
     for lines in opts:
         key,values = lines
         if key == '--orig_master_host':
             orig_master_host = values
         if key == '--new_master_host':
             new_master_host = values
         if key == '--new_slave_hosts':
             new_slave_hosts = values
         if key == '--subject':
             subject = values
         if key == '--body':
             body = values
 #    text = sys.stdin.read()
     mail_list = ['xuaiqi@vcredit.com','yujun02@vcredit.com','zhanglin04@vcredit.com']
     send_mail(mail_list, subject.encode("utf8"), body, "dbmonitor@vcredit.com", server="smtp.vcredit.com")

Master基础配置：

 [server default]
 user=root
 password=iforgot
 ssh_user=root
 repl_user=repl
 repl_password=repl
 ping_interval=
 #master_binlog_dir= /var/lib/mysql,/var/log/mysql
 secondary_check_script=masterha_secondary_check -s 10.200.22.136 -s 10.200.22.138 -s 10.200.22.223
 master_ip_failover_script="/etc/mha/scripts/master_ip_failover"
 master_ip_online_change_script="/etc/mha/scripts/master_ip_online_change"
 report_script="/etc/mha/scripts/send_report.py"

测试验证

keepalived vip切换

mha切换