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
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...keepalived2 Backup keepalived的安装 步骤1:从官方网站下载keepalived,官网地址https://keepalived.org/ 步骤2:将下载的资源上传到服务器...-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...keepalived进行关闭，而什么时候关闭keepalived呢?
如果实在搞不明白负载的那几台哪个是显示网页的哪台，都用ip addr查看一下，虚拟IP在哪台上就是哪台显示网页。
---- 环境信息 节点 软件 IP 节点A keepalived + tomcat 192.168.126.137 节点B keepalived + tomcat 192.168.126.138 虚拟...IP - 192.168.126.200 ---- 官网 https://keepalived.readthedocs.io/en/latest/# ---- 原理 keepalived用于保证环境高可用...---- keepalived 安装 两个节点均需要安装， 在137 和 138 节点上安装 ，执行 yum install keepalived 137 安装 keepalived [root@localhost...Keepalived_healthcheckers[6916]: Opening file '/etc/keepalived/keepalived.conf'....[6917]: Opening file '/etc/keepalived/keepalived.conf'.
首先把keepalived放到容器里了，版本也用了比较新的2.x.x以上 然后使用kubernetes static pod去管理keepalived服务 keepalived放到容器里的好处 安装成功率更高...keepalived在k8s中高可用中的作用 sealos中图中LVS的地方替换成HAproxy了 ?.../software/keepalived-2.0.8.tar.gz && tar zxvf keepalived-2.0.8.tar.gz && cd keepalived-2.0.8 && ..../configure && make && make install CMD ["keepalived", "-n","--all", "-d", "-D", "-f", "/etc/keepalived.../keepalived.conf", 这里需要用-n参数让keepalived在前台启动，之前在前台启动有一些无法执行检测脚本的问题，和官方沟通后解决, 不然可能需要用一些守护进程去守护，就比较恶心了.
192.168.2.149 软件 = keepaliveed-1.3.5 httpd-2.4 部署软件 （机器均操作） 1.安装keepavlied yum install keepalived...-y #文件 /etc/keepalived/keepalived.conf #keepalived服务主配置文件 /etc/rc.d/init.d/keepalived #服务启动脚本.../etc/sysconfig/keepalived /usr/bin/genhash /usr/libexec/keepalived /usr/sbin/keepalived 2.部署httpd（举例
更改为如下，多余部分删除，具体含义查看keepalived配置文件详解 （host-1操作） 1.把host-1作为主机器，进行修改配置 vim /etc/keepalived/keepalived.conf...Configuration File for keepalived global_defs { #全局配置 router_id lb01 #路由id号，不能重复 } vrrp_instance VI...Configuration File for keepalived global_defs { router_id lb02 #更改 } vrrp_instance VI_1 { state...测试 1.查看并测试是否通 ip addr ping 192.168.2.99 2.访问web服务器，查看信息是否一样 3.关闭主节点的keepalived服务，看效果 4.再开启，说明优先级生效了...，keepalived只能做到关闭自身服务方式来切换ip，可以写脚本，当httpd挂掉，就主动关闭keepalived
keepalived的主要作用体现在处理单点故障，像前面我们设置的两台主机，就可以进行故障演练，现在的状态是master主机开启着keepalived： ? ?...接下来关闭master上的keepalived： master上的已经关闭，并且查看ip addr： ? ? 发现已经移除。 反观backup: ?
/configure --prefix=/usr/local/keepalived --sysconf=/etc · prefix: keepalived 安装的位置 · syscon: keepalived...6、安装 keepalived make && make install 7、进入到 /etc/keepalived, 该目录下为 keepalived 核心配置文件 image.png 如果忘记安装配置的目录...#启动 keepalived systemctl start keepalived #停止 keepalived systemctl stop keepalived #重启 keepalived...systemctl restart keepalived 9.3、查看进程 ps -ef|grep keepalived 10、Keepalived 配置 Nginx 自动重启 10.1、增加 Nginx...#重启 Keepalived systemctl restart keepalived
1、keepalived配置包括三个部分： 全局配置 VRRPD配置 LVS配置 2、VRRPD配置： 4、VRRP实例配置： 6、LVS设置：负载均衡用 6、nopreempt
如图,配置的keepalived无法绑定虚ip： 报错信息 报错信息为(VI_HA): ip address associated with VRID 123 not present in MASTER...此问题中忘记了另一个同事也在测HA的稳定性，发现他也在用同样的组播地址和虚拟路由id，我修改之后重启keepalived，完美解决。...keepalived中配置 notify_master "/usr/bin/nohup /var/hms/base_service/ha/script/switch.sh MASTER &"...notify_backup "/usr/bin/nohup /var/hms/base_service/ha/script/switch.sh SLAVE &" notify_master和notify_backup在keepalived...而在本示例中，/var/log/message中报错信息如下：Keepalived_vrrp[123535]: Unable to access script `/var/hms/base_service
前言 Keepalived 作为 LVS 的有效补充可以构建一个高可用的 LB 前端 Keepalived is a routing software written in C....LVS 只实现到了四层，Keepalived 可以实现七层的简单检查，Keepalived 可以通过预设的检查逻辑来管理 LVS 配置，从而实现对 LVS 自动且动态的调配，让整个 LB 系统更加灵活且健壮...这里演示一下如何配置 Keepalived 加 LVS 的 TUN 模式 Tip: 当前的版本为 IPVS 1.2.1 和 Keepalived Version 2.0.5 (但是实验环境下，没有使用最新的版本...[root@ds1 ~]# 在 ds2 上也进行相同的操作，以准备好 keepalived 环境 配置 keepalived [root@ds1 ~]# cat /etc/keepalived/keepalived.conf.../keepalived.conf !
前言 Keepalived 作为 LVS 的有效补充可以构建一个高可用的 LB 前端 Keepalived is a routing software written in C....[root@ds1 ~]# 在 ds2 上也进行相同的操作，以准备好 keepalived 环境 配置 keepalived [root@ds1 ~]# cat /etc/keepalived/keepalived.conf...]# cat /etc/keepalived/keepalived.conf !...]# [root@ds2 keepalived]# systemctl start keepalived [root@ds2 keepalived]# systemctl status keepalived.../keepalived.service ├─4002 /usr/sbin/keepalived -D ├─4003 /usr/sbin/keepalived
介绍 Keepalived软件起初是专为LVS负载均衡软件设计的，用来管理并监控LVS集群系统中各个服务节点的状态，后来又加入了可以实现高可用的VRRP功能。...因此，Keepalived除了能够管理LVS软件外，还可以作为其他服务（例如：Nginx、Haproxy、MySQL等）的高可用解决方案软件。...Keepalived软件主要是通过VRRP协议实现高可用功能的。...所以，Keepalived一方面具有配置管理LVS的功能，同时还具有对LVS下面节点进行健康检查的功能，另一方面也可实现系统网络服务的高可用功能。...备节点可以有多个，通过优先级竞选，但一般 Keepalived系统运维工作中都是一对 VRRP使用了加密协议加密数据，但Keepalived官方目前还是推荐用明文的方式配置认证类型和密码 Keepalived
环境 操作系统：CentOS 7 Keepalived版本：1.4.2 准备 下载Keepalived安装包 – 方式一，将下载好的安装包上传至服务器，点击下载：keepalived-1.4.2.tar.gz...-1.4.2/keepalived/etc/init.d/keepalived /etc/init.d/ mkdir /etc/keepalived cp /usr/local/keepalived/etc.../keepalived/keepalived.conf /etc/keepalived/ cp /usr/local/src/keepalived-1.4.2/keepalived/etc/sysconfig.../keepalived /etc/sysconfig/ cp /usr/local/keepalived/sbin/keepalived /usr/sbin/ 配置文件的修改这里不介绍，根据自己业务需要修改...，会在本站文章：基于HA机制的Mycat高可用中有介绍 启动验证 systemctl start keepalived 查看状态 systemctl status keepalived
Keepalived+LVS DR 完整架构需要两台服务器（角色为dir）分别安装keepalived软件，目的是实现高可用，但keepalived本身也有负载均衡的功能，所以本次实验可以只安装一台keepalived...keepalived内置了ipvsadm的功能，所以不需要再安装ipvsadm包，也不用编写和执行那个lvs_dir的脚本 三台机器分别为： dir（安装keepalived）133.130 rs1...133.132 rs2 133.133 vip 133.200 编辑keepalived配置文件 vim /etc/keepalived/keepalived.conf//内容地址 需要更改里面的ip信息...有一个比较好的功能，可以在一台rs宕机时，不再把请求转发过去 测试 ---- Keepalived+LVS DR 完整架构需要两台服务器（角色为dir）分别安装keepalived软件，目的是实现高可用...，但keepalived本身也有负载均衡的功能，所以本次实验可以只安装一台keepalived 为什么需要把keepalived 加到lvs 中的目的是什么？
keepalived和之前的lvs不同，它实现了高可用，核心是vrrp协议，即当一个路由器出故障时，可以换一个路由器作为备用，实现路由效果，体现了容错效应，而lvs是实现了高扩展，将一个个的小项目分配到一台台主机上实现一个大项目...首先准备两台主机分别安装keepalived和nginx keepalived的安装很简单，如果不用最新版，可以直接yum install keepalived -y： ? 完成安装。...我们可以将想放进去的文字echo进该目录下并开启服务： 我在这里放的是keepalived文字 ?
Keepalived采用是模块化设计，不同模块实现不同的功能。 keepalived主要有三个模块，分别是core、check和vrrp。...的配置解析；可基于脚本检查对IPVS后端服务器健康状况进行检查 vrrp：VRRPD子进程，VRRPD子进程就是来实现VRRP协议的 keepalived配置文件： Keepalived配置文件为：keepalived.conf...-1.3.5-6.el7.x86_64.rpm 四、配置keepalived 如果不使用 VRRP Sync Groups 如果keepalived 主机有两个网段，每个网段开启一个VRRP 实例，如果对外的网段出现问题...serverA # vim /etc/keepalived/keepalived.conf ###################################### !.../keepalived.conf ###################################### !
Keepalived软件起初是专为LVS负载均衡软件设计的，用来管理并监控LVS集群系统中各个服务节点的状态，后来又加入了可以实现高可用的VRRP功能。...因此，Keepalived除了能够管理LVS软件外，还可以作为其他服务（例如：Nginx、Haproxy、MySQL等）的高可用解决方案软件。...Keepalived采用是模块化设计，不同模块实现不同的功能； keepalived主要有三个模块，分别是core、check和vrrp。...core：是keepalived的核心，负责主进程的启动和维护，全局配置文件的加载解析等 check： 负责healthchecker(健康检查)，包括了各种健康检查方式，以及对应的配置的解析包括LVS...vrrp：VRRPD子进程，VRRPD子进程就是来实现VRRP协议的 keepalived配置文件： Keepalived配置文件为：keepalived.conf； 主要有三个配置区域，分别是：全局配置
前言 Keepalived 作为 LVS 的有效补充可以构建一个高可用的 LB 前端 Keepalived is a routing software written in C....[root@ds1 ~]# cat /etc/keepalived/keepalived.conf !.../keepalived.conf !.../keepalived.service ├─4249 /usr/sbin/keepalived -D ├─4250 /usr/sbin/keepalived.../keepalived.service ├─4433 /usr/sbin/keepalived -D ├─4434 /usr/sbin/keepalived
领取专属 10元无门槛券
手把手带您无忧上云
云服务器
ICP备案
对象存储
云直播
腾讯会议
