centos7 keepalived+高可用服务搭建

master服务器ip地址：192.168.43.238
slave服务器ip地址：192.168.43.68
realserver服务器ip地址 :192.168.43.100
realserver服务器ip地址 :192.168.43.128

步骤解析

前期准备

主机yum源更改

下载软件时报错 ，显示找不到

这里我们把yum源换成阿里的源
PS:如果没有wget命令 需要 yum install -y wget 下载

mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup  #先做备份工作
wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo  #将网页文件下载至指定目录 
yum clean all  #清理缓存并生成新的缓存
yum makecache

更换好后发现下载速度滋溜提升了

调试

[root@localhost ~]# rpm -q ipvsadm 
ipvsadm-1.27-8.el7.x86_64

[root@localhost ~]# ipvsadm -A -t 192.168.43.60:80 -s rr


[root@localhost ~]# ipvsadm -a -t 192.168.43.60:80 -r 192.168.43.68:80
[root@localhost ~]# ipvsadm -a -t 192.168.43.60:80 -r 192.168.43.100:80
[root@localhost ~]# ipvsadm -ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  192.168.43.60:80 rr
  -> 192.168.43.68:80             Route   1      0          0         
  -> 192.168.43.100:80            Route   1      0          0   

server端和backup端都需要做的事

[root@localhost html]# yum install -y httpd
[root@l