首先开启keepalived进行访问 ? 发现keepalived自动将lvs集群配置完毕 ?...发现keepalived尝试3次未果直接将该主机移出lvs集群: ? 再去访问只有一个2的页面 ?...再在192.168.19.137上开启httpd服务,发现keepalived检测到后将主机192.168。19.137重新加回lvs集群: ? ? 再去访问成功轮训: ?...实践完毕,最重要的就是对HTTP_GET配置段的合理规划 同样我们也可以设置tcp的检测方式(TCP_CHECK段)
(C) 2001-2017 Alexandre Cassen, 配置KeepAlived 配置Master机器keepalived 新增shutdown.sh脚本.../bin/bashpkill keepalived 配置keepalived.conf文件 [root@8166c07dd6c7 keepalived]# vi /etc/keepalived/keepalived.conf...[root@a40a40c6bde7 bin]# systemctl stop keepalived.service 配置Slave机器keepalived 新增shutdown.sh脚本,并且赋值可以执行权限.../bin/bashpkill keepalived 配置keepalived.conf文件 !...遇到问题 不能启动keepalived服务 Failed to get D-Bus connection: Operation not permitteddocker run -itd --name docker-mysql-slave
1 vim /etc/keepalived/check_MySQL.sh 2 #!.../bin/sh 3 #isok=$(sed -n '2p' /etc/keepalived/result.txt) 4 isok=$(/usr/local/mysql/bin/mysql -uroot...-p123456 -e 'select 1' |sed -n '2p') 5 function error_query(){ 6 service keepalived stop 7...echo "172.16.16.34 mysql down, keepalived 切换" | mail -s "34MySQL+keepalived通知" ma.xiangqian@sf-express.com
今天闲来无事,打算搭建一个MySQL的高可用架构,采用的是MySQL的主主结构,再外加Keepalived,对外统一提供虚IP。...两台机器如下: 192.168.73.141:MySQL(主1)、Keepalived(MASTER) 192.168.73.142:MySQL(主2)、Keepalived(BACKUP) 192.168.73.150...Keepalived高可用 MySQL主主结构已经搭建好了,无论从哪个MySQL插入数据,都会同步到另外一个MySQL。...当keepalived检测到192.168.73.141(主1)上的MySQL不可用时,会自动切换到192.168.73.142(主2)。...我们再来看看检测的脚本/usr/bin/killall -0 mysqld,killall命令不是系统自带的,需要安装,我们还是使用yum来安装,如下: # 先查询一下killall yum search
/bin/bash #/etc/keepalived/check_mysql.sh #chmod u+x /etc/keepalived/check_mysql.sh #Linux 7 使用,如果是配置.../check_mysql.sh 主库 B 配置 Keepalived 主库 B keepalived 配置文件,编辑 /etc/keepalived/keepalived.conf 文件: global_defs.../bin/bash #/etc/keepalived/notify_master_mysql.sh #chmod u+x /etc/keepalived/notify_master_mysql.sh.../notify_master_mysql.sh 启动 Keepalived 在主库 A 和主库 B 上分别启动 keepalived。...[root@mysql-master keepalived-2.2.4]# systemctl status keepalived.service ● keepalived.service - LVS
1 vim /etc/keepalived/check_MySQL.sh 2 #!.../bin/bash 3 MYSQL=/usr/bin/mysql 4 MYSQL_HOST=localhost 5 MYSQL_USER=root 6 CHECK_COUNT=5 7...counter=1 8 while true 9 do 10 mysql -h $MYSQL_HOST -u $MYSQL_USER -e "show status;" >...27 continue 28 fi 29 fi 30 done 31 /etc/init.d/keepalived
比如我们现在只是配置了MySQL Replication,加上如Keepalived这样的高可用软件,就能实现我们的需求。...图1 三、Keepalived简介 Keepalived的作用是检测服务器的状态,如果有一台服务器宕机,或工作出现故障,Keepalived将检测到,并将有故障的服务器从系统中剔除,同时使用其它服务器代替该服务器的工作.../home/mysql/mysql_check.sh文件用以检测MySQL服务是否正常,当发现连接不上mysql,自动把keepalived进程杀掉,让VIP进行漂移。文件内容如下。...这里MySQL主从库两个优先级分别设置为100和90,因此当Keepalived启动后,MySQL主库会被选为Master。 advert_int:检查间隔,这里设置为默认的1秒。...Keepalived+MySQL实现高可用 2. Keepalived权威指南
1.准备工作 MySQL、Keepalived的具体版本,虚拟主机等配置,都尽可能参考客户目前的生产环境安装规范来准备: 软件名称 版本 MySQL 5.7.29 Keepalived 2.0.20...Configuration File for keepalived vrrp_script chk_mysql_port { script "/etc/keepalived/check_mysql.sh...} } 编辑 /etc/keepalived/check_mysql.sh vi /etc/keepalived/check_mysql.sh #!...stop fi # 修改chk_mysql.sh权限 chmod 755 /etc/keepalived/check_mysql.sh # 启动keepalived # service keepalived...Configuration File for keepalived vrrp_script chk_mysql_port { script "/etc/keepalived/check_mysql.sh
1 vim /etc/keepalived/check_MySQL.sh 2 #vim #!.../bin/bash 3 MYSQL=/usr/local/mysql/bin/mysql 4 MYSQL_HOST=localhost 5 MYSQL_USER=root 6 MYSQL_PASSWORD...= 7 CHECK_TIME=3 8 #mysql is working MYSQL_OK is 1 , mysql down MYSQL_OK is 0 9 MYSQL_OK=1 10...function check_mysql_helth (){ 11 $MYSQL -h $MYSQL_HOST -u $MYSQL_USER -e "show status;" >/dev/null.../etc/init.d/keepalived stop 30 exit 1 31 fi 32 sleep 1 33 done
1 vim /etc/keepalived/check_MySQL.sh 2 #!/bin/bash 3 pkill keepalived
本次主要介绍了利用 keepalived 实现 MySQL 数据库的高可用。 基本思路: Keepalived+mysql双主来实现MySQL-HA,我们必须保证两台MySQL数据库的数据完全一样。...基本思路是两台 MySQL 互为主从关系,通过 Keepalived 配置虚拟 IP,实现当其中的一台MySQL 数据库宕机后,应用能够自动切换到另外一台 MySQL 数据库,保证系统的高可用。...实现高可用的基本环境: OS:centos7.0 x86_64 Mysql 版本:mysql 5.7.22 Keepalived: keepalived-2.0.6 Mysql-vip:192.168.1.100...启动 keepalived 服务 #/etc/init.d/keepalived start 3、#mkdir /etc/keepalived/bin vi /etc/keepalived /bin/mysql.sh...Keepalived+mysql 双主一般来说,中小型规模的时候,采用这种架构是最省事的。在 master 节点发生故障后,利用 keepalived 的高可用机制实现快速切换到备用节点。
/mysqlcheck/keepalived_check_mysql.sh " 35 interval 2 36 } 4.3 创建检测脚本 1 [root@Master01 ~]# mkdir...-p /etc/keepalived/mysqlcheck/ 2 [root@Master01 ~]# vi /etc/keepalived/mysqlcheck/keepalived_check_mysql.sh...[root@Master01 ~]# chmod u+x /etc/keepalived/mysqlcheck/keepalived_check_mysql.sh 36 [root@Master01...4.5 创建检测脚本 1 [root@Master02 ~]# mkdir -p /etc/keepalived/mysqlcheck/ 2 [root@Master01 ~]# scp /etc.../keepalived/mysqlcheck/keepalived_check_mysql.sh root@172.24.8.11:/etc/keepalived/mysqlcheck/ 3 [root
前面大家介绍了主从、主主复制以及他们的中间件mysql-proxy的使用,这一篇给大家介绍的是keepalived的搭建与使用!...一、keepalived简介 1.1、keepalived介绍 Keepalived起初是为LVS设计的,专门用来监控集群系统中各个服务节点的状态,它根据TCP/IP参考模型的第三、第四层、第五层交换机制检测每个服务节点的状态...,如果某个服务器节点出现异常, 或者工作出现故障,Keepalived将检测到,并将出现的故障的服务器节点从集群系统中剔除,这些工作全部是自动完成的,不需要人工干涉,需要人工完成的只是修复出现故障的服务节点...2.5、测试使用keepalived获取MySQL服务器的连接 注意:我是在我的udzyh2中测试的 在这里我们使用虚拟ip登录上了udzyh1中的MySQL服务器(因为它是主节点:竞争到了虚拟...2.6、MySQL服务宕机 我们通过说我们udzyh1中的MySQL服务宕机之后,keepalived检测到了它宕机,会执行配置文件的脚本,使得keepalived停止, 备份节点的keepalived
NAT persistence_timeout 50 protocol TCP real_server 192.168.1.10 3306 { #检测本地...mysql weight 3 notify_down /tmp/mysql.sh #当mysql服务down时,执行此脚本,杀死keepalived...NAT persistence_timeout 50 protocol TCP real_server 192.168.1.20 3306 { #检测本地...mysql weight 3 notify_down /tmp/mysql.sh #当mysql服务down时,执行此脚本,杀死keepalived...$ # systemctl start keepalived 两台mysql服务器授权允许root远程登录: # mysql -uroot -p123456789 mysql> grant all on
keepalived高可用服务工作原理 keepalived高可用对之间是通过VRRP协议通信的,VRRP协议是通过竞选机制来确定主备的,主的优先级高于备,因此,工作时主会获得所有的资源,备节点处于等待状态...keepalived部署 keepalived软件安装部署 lb01 lb02负载服务器上均安装 yum install -y keepalived #两台设备 配置文件 cat /etc/keepalived...配置文件 (lb01) cat /etc/keepalived/keepalived.conf global_defs { router_id LVS_01 vrrp_strict...systemctl enable keepalived 搭建基础的keepalived配置文件 (lb02) cat /etc/keepalived/keepalived.conf global_defs...systemctl enable keepalived
/mysql.sh #检测到服务down后执行的脚本 TCP_CHECK { connect_timeout 10 #连接超时时间...delay_before_retry 3 #重连间隔时间 connect_port 3306 #健康检查端口 } } } 编写检测服务.../mysql.sh #检测到服务down后执行的脚本 TCP_CHECK { connect_timeout 10 #连接超时时间...delay_before_retry 3 #重连间隔时间 connect_port 3306 #健康检查端口 } } } 编写检测服务...因为我们的检测脚本只是简单的直接杀死keepalived,当我们恢复mysql服务时,同时还需要启动keepalived。
HAProxy+Keepalived实现MySQL的高可用负载均衡 当前环境说明 A:10.10.99.180(MySQLMaster)----| |________VIP(10.10.99.103)...d595/64scopelink valid_lftforeverpreferred_lftforever 7、因为我们知道crontab的颗粒细化度只有1分钟,不能细化到秒,所以我们编写haproxy循环检测脚本...9、MySQL测试 程序在读写分离之后,所有的select语句可以直接通过访问10.10.105.303306来进行工作,后端的mysql服务器可以实现并发读操作 [root@vm-105-23scripts...实现MySQL的高可用负载均衡 当前环境说明 A:10.10.99.180(MySQLMaster)----| |________VIP(10.10.99.103) B:10.10.99.108(MySQLSlave...)------| C:10.10.105.11(MySQLSlave) D:10.10.105.23(HAProxy+Keepalived) E:10.10.105.24(HAProxy+Keepalived
/ tar zxvf /opt/keepalived-1.4.2.tar.gz cd /opt/keepalived-1.4.2 ..../etc/keepalived/keepalived.conf /etc/keepalived/ cp /usr/local/sbin/keepalived /usr/sbin/ 4、配置文件 vi /...etc/keepalived/keepalived.conf global_defs { router_id MySQL-HA2 } vrrp_script check_run { script...} 从库一样的,就是priority 90 这里改成90 5、自动切换脚本,2个节点一样的配置 (1) vi /etc/keepalived/mysql_check.sh #!...主从都已配置完成并启动 启动keepalived systemctl start keepalived 下面这个是停止命令 systemctl stop keepalived 这样就部署完成了,其他的测试啥的
Keepalived Nginx高可用解决方案 Keepalived VRRP介绍 环境搭建 Keepalived配置文件介绍 打开keepalived.conf配置文件 访问测试 keepalived...---- Keepalived 使用Keepalived来解决,Keepalived 软件由 C 编写的,最初是专为 LVS 负载均衡软件设计的,Keepalived 软件主要是通过 VRRP 协议实现高可用功能...2.路由容错协议 Master路由和Backup路由之间会有一个心跳检测,Master会定时告知Backup自己的状态,如果在指定的时间内,Backup没有接收到这个通知内容,Backup就会替代Master...-zxf keepalived-2.0.20.tar.gz -C keepalived/ 步骤5:对keepalived进行配置,编译和安装 cd keepalived/keepalived-2.0.20...,这个时候,我们可以通过编写脚本对业务进程进行检测监控。
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