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农产品电商网站建设的总体目标,网站建设 域名业务 邮箱,开题报告网站开发方法,建小网站多少钱文章目录实验环境实验目的实验步骤1.将lb01的配置同步到lb022.在lb01和lb02上安装keepalived3.编写keepalived的配置文件4.启动服务5、验证#xff1a;主备是否成功6、如何判断谁提供服务实验环境 主机名内网虚拟IP角色lb0110.0.0.510.0.0.200主lb0210.0.0.610.0.0.200备 实验…文章目录实验环境实验目的实验步骤1.将lb01的配置同步到lb022.在lb01和lb02上安装keepalived3.编写keepalived的配置文件4.启动服务5、验证主备是否成功6、如何判断谁提供服务实验环境主机名内网虚拟IP角色lb0110.0.0.510.0.0.200主lb0210.0.0.610.0.0.200备实验目的提高lb的高可用使用keepalived实现主备这里我们对lnmp架构站点进行高可用搭建lnmp架构的网站请看我之前的文档实验步骤1.将lb01的配置同步到lb021、安装Nginx[rootlb02~]# scp -r root10.0.0.5:/etc/yum.repos.d/ /etc/yum.repos.d/root10.0.0.5s password: CentOS-Base.repo 100% 1890 765.9KB/s 00:00 epel.repo 100% 664 950.3KB/s 00:00 nginx.repo 100% 192 324.1KB/s 00:00 nginx.conf 100% 99 134.7KB/s 00:00 [rootlb02 ~]# yum -y install nginx 创建程序用户 [rootlb02 ~]# groupadd www -g 666 [rootlb02 ~]# useradd www -u 666 -g 666 -s /sbin/nologin -M [rootlb02 ~]# scp -r root10.0.0.5:/etc/nginx/ /etc/ root10.0.0.5spassword:proxy.conf100%194406.5KB/s00:00default.conf100%10722.1MB/s00:00java.conf100%254473.1KB/s00:00fastcgi_params100%10071.1MB/s00:00mime.types100%52316.9MB/s00:00nginx.conf100%6481.3MB/s00:00scgi_params100%636764.9KB/s00:00uwsgi_params100%664454.3KB/s00:00proxy_params100%275673.1KB/s00:00修改配置文件[rootlb02~]# sed -i /^user/c user www; /etc/nginx/nginx.conf[rootlb02~]# systemctl start nginx[rootlb02~]# systemctl enable nginxCreated symlink from/etc/systemd/system/multi-user.target.wants/nginx.service to/usr/lib/systemd/system/nginx.service.2.在lb01和lb02上安装keepalived[rootlb01~]# yum install -y keepalived[rootlb02~]# yum install -y keepalived3.编写keepalived的配置文件#lb01的配置[rootlb01~]# cat /etc/keepalived/keepalived.conf!Configuration Fileforkeepalived global_defs{router_id lb01# 添加唯一标识即可}vrrp_instanceVI_1{stateMASTER# 保留Master节点标识interfaceens33# 注意需确认你的服务器实际网卡名称如ens33、eth0必须和系统一致virtual_router_id50# 保留同一VRRP组内Master/Backup必须相同0-255priority100# 保留Master优先级高于Backup即可advert_int1# 保留心跳发送间隔1秒同一组必须相同authentication{auth_typePASS# 保留认证方式auth_pass1111# 保留同一组必须相同密码长度1-8位}virtual_ipaddress{# 【关键修改】去掉dev eth1该写法在部分Keepalived版本中会导致VIP绑定失败# 原写法172.16.1.3/24 dev eth110.0.0.200/24# Keepalived会自动绑定到interface指定的网卡# 这里的IP可以自己定义需要和主机IP在同一个网段里面}}#lb02的配置[rootlb02~]# cat /etc/keepalived/keepalived.conf!Configuration Fileforkeepalived global_defs{router_id lb02# 【必改1】router_id唯一添加为lb02}vrrp_instanceVI_1{stateBACKUP# 【必改2】state改为BACKUPinterfaceens33# 【必须和Master一致】网卡名称相同virtual_router_id50# 【必须和Master一致】priority99# 【必改3】priority改为低于Master如100advert_int1# 【必须和Master一致】authentication{auth_typePASS# 【必须和Master一致】auth_pass1111# 【必须和Master一致】}virtual_ipaddress{10.0.0.200/24# 【必须和Master一致】VIP相同}}4.启动服务[rootlb01~]# systemctl start keepalived[rootlb01~]# systemctl enable keepalivedCreated symlink from/etc/systemd/system/multi-user.target.wants/keepalived.service to/usr/lib/systemd/system/keepalived.service.[rootlb02~]# systemctl start keepalived[rootlb02~]# systemctl enable keepalivedCreated symlink from/etc/systemd/system/multi-user.target.wants/keepalived.service to/usr/lib/systemd/system/keepalived.service.5、验证主备是否成功1、检查lb01# lb01存在vip地址[rootlb01 conf.d]# ip addr |grep 10.0.0.200inet10.0.0.200/24 scope global secondary ens33# 停止lb01上的keepalived, 检测vip已不存在[rootlb01 conf.d]# systemctl stop keepalived[rootlb01 conf.d]# ip addr |grep 10.0.0.200[rootlb01 conf.d]#2、检查lb02在 lb02 上进行如下操作 因为lb01已经暂停检查lb02是否有接管[rootlb02 conf.d]# ip addr |grep 10.0.0.200inet10.0.0.200/24 scope global secondary ens33 现在把lb01的服务启动观察lb02是否有虚拟IP[rootlb01 conf.d]# systemctl start keepalived[rootlb02 conf.d]# ip addr |grep 10.0.0.200[rootlb02 conf.d]#6、如何判断谁提供服务# 看哪一台有虚拟IP地址[rootlb01~]# ip address show ens363:ens36:BROADCAST,MULTICAST,UP,LOWER_UPmtu1500qdisc pfifo_fast stateUPgroupdefaultqlen1000link/ether00:0c:29:c4:62:f0 brdff:ff:ff:ff:ff:ff inet172.16.1.5/24brd172.16.1.255scopeglobalnoprefixroute ens36 valid_lft forever preferred_lft forever inet172.16.1.3/32scopeglobalens36