[Linux操作系统]探索Keepalived高可用集群部署,实现业务连续性的关键技术|keepalived实现高可用,keepalived高可用集群部署
本文深入探讨了Linux操作系统中Keepalived高可用集群的部署,介绍了实现业务连续性的关键技术。通过使用keepalived,可以确保系统的高可用性,有效避免单点故障,提升整体系统的稳定性。文章重点讲解了keepalived高可用集群的部署方法,为企业在实际生产环境中实现不间断服务提供了有力支持。
本文目录导读:
在当今信息化时代,业务系统的稳定性与可靠性成为企业关注的焦点,为了确保关键业务的高可用性,避免单点故障,高可用集群技术应运而生,Keepalived作为一款高性能、轻量级的高可用解决方案,得到了广泛的应用,本文将详细介绍Keepalived高可用集群的部署过程,以帮助读者实现业务连续性。
Keepalived简介
Keepalived是一个基于VRRP(Virtual Router Redundancy Protocol,虚拟路由器冗余协议)的高可用解决方案,主要用于实现路由器的高可用,它具有以下特点:
1、支持多种网络协议,如TCP、UDP、HTTP等。
2、轻量级,占用系统资源少。
3、易于部署和维护。
4、支持多种负载均衡算法。
Keepalived高可用集群部署
1、环境准备
本文以两台服务器为例,分别为Master和Backup,以下是部署前所需的环境准备:
(1)两台服务器操作系统版本一致。
(2)两台服务器网络互通,且能访问互联网。
(3)安装所需的依赖包:gcc、openssl-devel、popt-devel等。
2、安装Keepalived
(1)下载Keepalived源码包:http://www.keepalived.org/download.html
(2)解压源码包,编译安装:
tar -zxf keepalived-2.0.20.tar.gz cd keepalived-2.0.20 ./configure --prefix=/usr/local/keepalived make && make install
(3)将Keepalived加入系统服务:
cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/ cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/ ln -s /usr/local/keepalived/sbin/keepalived /usr/sbin/ ln -s /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived/
3、配置Keepalived
(1)Master节点配置:
vi /etc/keepalived/keepalived.conf
以下是配置文件内容:
! Configuration File for keepalived global_defs { router_id LVS_DEVEL } vrrp_instance VI_1 { state MASTER interface eth0 virtual_router_id 51 priority 100 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.1.100 } }
(2)Backup节点配置:
vi /etc/keepalived/keepalived.conf
以下是配置文件内容:
! Configuration File for keepalived global_defs { router_id LVS_DEVEL } vrrp_instance VI_1 { state BACKUP interface eth0 virtual_router_id 51 priority 99 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.1.100 } }
4、启动Keepalived服务
在Master和Backup节点上分别启动Keepalived服务:
service keepalived start
5、验证高可用集群
(1)查看虚拟IP是否绑定在Master节点上:
ip addr show eth0
(2)关闭Master节点的Keepalived服务,观察Backup节点是否接管虚拟IP:
service keepalived stop
(3)重新启动Master节点的Keepalived服务,观察虚拟IP是否重新绑定到Master节点:
service keepalived start
通过以上步骤,我们成功部署了Keepalived高可用集群,在实际生产环境中,可以根据业务需求调整配置文件,实现更复杂的业务场景,掌握Keepalived高可用集群部署,有助于提高业务系统的稳定性和可靠性。
以下是本文相关的关键词:
keepalived, 高可用集群, 部署, 业务连续性, VRRP, 虚拟路由器, 冗余协议, 负载均衡, 系统稳定性, 系统可靠性, 环境准备, 安装Keepalived, 配置Keepalived, 虚拟IP, Master节点, Backup节点, 高性能, 轻量级, 网络互通, 依赖包, 源码安装, 系统服务, 节点配置, 验证高可用, 业务需求, 配置文件, 生产环境, 稳定性提升, 可靠性提升, 业务系统, 高可用解决方案, 路由器冗余, 负载均衡算法, 系统资源, 部署过程, 维护, 跨互联网, 网络协议, TCP, UDP, HTTP等。