一、环境
三台主机分别为
192.168.28.3 tomcat
192.168.28.4 nfs
192.168.28.5 tomcat
192.168.28.6 nginx，keepalived
192.168.28.7 nginx，keepalived
二、配置tomcat
两台tomcat配置把解压包拖进主机解压移动
tar xf apache-tomcat-8.5.16.tar.gz tar xf apache-tomcat-8.5.16.tar.gz mv apache-tomcat-8.5.16 /usr/local/tomcat mv apache-tomcat-8.5.16 /usr/local/tomcat ln -s /usr/local/tomcat/bin/startup.sh /usr/bin/qd1 ln -s /usr/local/tomcat/bin/shutdown.sh /usr/bin/tz1
###创建挂载目录
/usr/local/tomcat
mkdir webapps1
###修改tomcat的访问目录
vim /usr/local/tomcat/conf/server.xml
###修改host字段插入
<Context path="" docBase="/usr/local/tomcat/webapps1" />
三、配置nfs共享
mkdir /opt/web1 mkdir /opt/web2 vim /etc/exports systemctl restart nfs exportfs
##安装nfs服务
yum -y install nfs
##创建共享目录
mkdir /opt/web1
mkdir /opt/web2
##配置nfs的配置文件vim /etc/exports
systemctl restart nfs
回到两台Tomcat的上查看共享目录
[root@localhost tomcat]# mkdir webapps1 showmount -e 192.168.28.4 mount 192.168.28.4:opt/web2 /usr/local/tomcat/webapps1 echo tomcat2 > webapps1/index.jsp qd1
##查看挂载情况
df
###分别书写测试页面
echo tomcat1 > webapps1/index.jsp
echo tomcat2 > webapps1/index.jsp
##启动Tomcat
qd1
qd0
##查看端口
netstat -anptu |grep java
测试页面
四、配置nginx
1、两台都需要折磨配置
192.168.28.6
192.168.28.7
#安装 yum -y install epel-release.noarch yum -y install nginx vim /etc/nginx/nginx.conf
2、在http下面插入这两条信息
在server字段插入下方这句话
启动nginx
访问一下测试页面
查看调度器
五、配置keepalived
1、安装
192.168.28.6
192.168.28.7
yum -y install keepalived vim /etc/keepalived/keepalived.conf systemctl restart keepalived.service scp /etc/keepalived/keepalived.conf 192.168.28.7:/etc/keepalived/keepalived.conf ! Configuration File for keepalived global_defs { notification_email { acassen@firewall.loc failover@firewall.loc sysadmin@firewall.loc } notification_email_from Alexandre.Cassen@firewall.loc smtp_server 192.168.200.1 smtp_connect_timeout 30 router_id LVS_DEVEL ###从的编号要改动一下 LVS_DEVEL1 vrrp_skip_check_adv_addr #vrrp_strict vrrp_garp_interval 0 vrrp_gna_interval 0 } vrrp_instance VI_1 { state MASTER ###从改为BACKUP interface ens33 ###网卡名 virtual_router_id 51 priority 100 ###从的优先级要比主低 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.28.200 ###VIP用来访问的虚拟IP } } virtual_server 192.168.28.200 8080 { ###vip对应的真是IP 在下面 delay_loop 6 lb_algo rr persistence_timeout 50 protocol TCP real_server 192.168.28.3 8080 { ###这是Tomcat服务器的IP weight 1 HTTP_GET { url { path /testurl/test.jsp } url { path /testurl2/test.jsp } url { path /testurl3/test.jsp } connect_timeout 3 nb_get_retry 3 delay_before_retry 3 } } real_server 192.168.28.5 8080 { ###这是Tomcat服务器的IP weight 1 HTTP_GET { url { path /testurl/test.jsp } url { path /testurl2/test.jsp } connect_timeout 3 nb_get_retry 3 delay_before_retry 3 } } }
2、重新启动一下keepalived查看IP
systemctl restart keepalived.service ip a
VIP页面访问测试
静态页面
动态页面
六、验证双机热备
模拟调度器主宕机systemctl stop keepalived，使用调度器备访问
1、查看调度器备的IP，ip漂移说明keepalived生效
2、访问静态页面
3、 访问动态页面
