项目架构
关防火墙
#每台机子关闭防火墙和selinux systemctl stop firewalld systemctl disable firewalld setenforce 0
1.改网段
2. NFS
[root@localhost ~]# cd /opt/ [root@localhost opt]# mkdir nfs [root@localhost opt]# cd nfs/ [root@localhost nfs]# mkdir web1 web2 [root@localhost nfs]# echo "this is web1" > web1/index.html [root@localhost nfs]# echo "this is web2" > web2/index.html [root@localhost nfs]# vim /etc/exports /opt/nfs/web1 192.168.100.0/24(rw,sync,no_root_squash) /opt/nfs/web2 192.168.100.0/24(rw,sync,no_root_squash) [root@localhost nfs]# systemctl start rpcbind [root@localhost nfs]# systemctl start nfs [root@localhost nfs]# showmount -e Export list for localhost.localdomain: /opt/nfs/web2 192.168.100.0/24 /opt/nfs/web1 192.168.100.0/24 [root@localhost nfs]#
3.keepalived+lvs
192.168.100.10 [root@localhost ~]# hostnamectl set-hostname ha01 [root@localhost ~]# su [root@ha01 ~]# yum install -y ipvsadm keepalived [root@ha01 ~]# cd /etc/keepalived/ [root@ha01 keepalived]# vim 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 127.0.0.1 smtp_connect_timeout 30 router_id LVS_01 } vrrp_instance VI_1 { state MASTER interface ens33 virtual_router_id 51 priority 100 advert_int 1 authentication { auth_type PASS auth_pass 123123 } virtual_ipaddress { 192.168.100.100 } } virtual_server 192.168.100.100 80 { delay_loop 6 lb_algo rr lb_kind DR persistence_timeout 0 protocol TCP real_server 192.168.100.30 80 { weight 1 TCP_CHECK { connect_port 80 connect_timeout 3 nb_get_retry 3 delay_before_retry 3 } } real_server 192.168.100.40 80 { weight 1 TCP_CHECK { connect_port 80 connect_timeout 3 nb_get_retry 3 delay_before_retry 3 } } } [root@ha01 keepalived]# systemctl restart keepalived.service [root@ha01 keepalived]# ipvsadm-save > /etc/sysconfig/ipvsadm [root@ha01 keepalived]# systemctl start ipvsadm [root@ha01 ~]# vim /etc/sysctl.conf net.ipv4.ip_forward = 0 net.ipv4.conf.all.send_redirects = 0 net.ipv4.conf.default.send_redirects = 0 net.ipv4.conf.ens33.send_redirects = 0 [root@ha01 ~]# sysctl -p
192.168.100.20 [root@localhost ~]# hostnamectl set-hostname ha02 [root@localhost ~]# su [root@ha02 ~]# yum install -y ipvsadm keepalived [root@ha02 ~]# cd /etc/keepalived/ [root@ha02 keepalived]# vim 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 127.0.0.1 smtp_connect_timeout 30 router_id LVS_02 } vrrp_instance VI_1 { state BACKUP interface ens33 virtual_router_id 51 priority 90 advert_int 1 authentication { auth_type PASS auth_pass 123123 } virtual_ipaddress { 192.168.100.100 } } virtual_server 192.168.100.100 80 { delay_loop 6 lb_algo rr lb_kind DR persistence_timeout 0 protocol TCP real_server 192.168.100.30 80 { weight 1 TCP_CHECK { connect_port 80 connect_timeout 3 nb_get_retry 3 delay_before_retry 3 } } real_server 192.168.100.40 80 { weight 1 TCP_CHECK { connect_port 80 connect_timeout 3 nb_get_retry 3 delay_before_retry 3 } } } [root@ha02 keepalived]# systemctl restart keepalived.service [root@ha02 keepalived]# ipvsadm-save > /etc/sysconfig/ipvsadm [root@ha02 keepalived]# systemctl start ipvsadm [root@ha02 ~]# vim /etc/sysctl.conf net.ipv4.ip_forward = 0 net.ipv4.conf.all.send_redirects = 0 net.ipv4.conf.default.send_redirects = 0 net.ipv4.conf.ens33.send_redirects = 0 [root@ha02 ~]# sysctl -p
4.动静分离
192.168.100.30 [root@localhost ~]# hostnamectl set-hostname web1 [root@localhost ~]# su [root@web1 ~]# #安装jdk tar zxvf jdk-8u91-linux-x64.tar.gz -C /usr/local/ #配置环境变量 vim /etc/profile export JAVA_HOME=/usr/local/jdk1.8.0_91 export JRE_HOME=${JAVA_HOME}/jre export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib export PATH=${JAVA_HOME}/bin:${JRE_HOME}/bin:$PATH #加载 source /etc/profile #复制到另一台机子 cd /usr/local scp -r jdk1.8.0_91/ 192.168.100.40:`pwd` #第二台也配置环境变量 #解压Tomcat cd /opt/ tar zxvf apache-tomcat-9.0.16.tar.gz mkdir /usr/local/tomcat mv apache-tomcat-9.0.16/ /usr/local/tomcat/ #tomcat服务器1配置 cd /usr/local/tomcat/apache-tomcat-9.0.16/webapps/ mkdir test vim /usr/local/tomcat/apache-tomcat-9.0.16/webapps/test/index.jsp <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <html> <head> <title>JSP test1 page</title> </head> <body> <% out.println("动态页面 1,this is dynamic web1");%> </body> </html> #注释原来的 vim /usr/local/tomcat/apache-tomcat-9.0.16/conf/server.xml <Host name="localhost" appBase="webapps" unpackWARs="true" autoDeploy="true" xmlValidation="false" xmlNamespaceAware="false"> <Context docBase="/usr/local/tomcat/apache-tomcat-9.0.16/webapps/test" path="" reloadable="true"> </Context> #启动 /usr/local/tomcat/apache-tomcat-9.0.16/bin/startup.sh #复制到服务器2 cd /usr/local/ scp -r /usr/local/tomcat/ 192.168.100.40:`pwd`
192.168.100.40 [root@localhost ~]# hostnamectl set-hostname web2 [root@localhost ~]# su [root@web2 ~]# #tomcat服务器2配置 cd /usr/local/tomcat/apache-tomcat-9.0.16/webapps/ mkdir test vim /usr/local/tomcat/apache-tomcat-9.0.16/webapps/test/index.jsp <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <html> <head> <title>JSP test2 page</title> </head> <body> <% out.println("动态页面 2,this is dynamic web2");%> </body> </html> #启动 /usr/local/tomcat/apache-tomcat-9.0.16/bin/startup.sh
安装nginx（两台）
1、安装依赖包 yum -y install pcre-devel zlib-devel gcc gcc-c++ make 2、创建运行用户 useradd -M -s /sbin/nologin nginx 3、编译安装 cd /opt tar zxvf nginx-1.12.0.tar.gz -C /opt/ cd nginx-1.12.0/ ./configure \ --prefix=/usr/local/nginx \ --user=nginx \ --group=nginx \ --with-http_stub_status_module make && make install 4、优化路径 ln -s /usr/local/nginx/sbin/nginx /usr/local/sbin/ 5、添加 Nginx 系统服务 vim /lib/systemd/system/nginx.service [Unit] Description=nginx After=network.target [Service] Type=forking PIDFile=/usr/local/nginx/logs/nginx.pid ExecStart=/usr/local/nginx/sbin/nginx ExecReload=/bin/kill -s HUP $MAINPID ExecStop=/bin/kill -s QUIT $MAINPID PrivateTmp=true [Install] WantedBy=multi-user.target chmod 754 /lib/systemd/system/nginx.service systemctl start nginx.service systemctl enable nginx.service #Nginx server 配置 vim /usr/local/nginx/conf/nginx.conf # server项外面添加 upstream tomcat_server { server 192.168.100.30:8080; server 192.168.100.40:8080; } #server项内添加 location ~ .*\.jsp$ { proxy_pass http://tomcat_server; proxy_set_header HOST $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; } systemctl restart nginx.service #挂载nfs两台 [root@web1 ~]# mount 192.168.100.50:/opt/nfs/web1 /usr/local/nginx/html [root@web2 ~]# mount 192.168.100.50:/opt/nfs/web2 /usr/local/nginx/html
配置虚拟IP地址（两台）
[root@web1 conf]# cd /etc/sysconfig/network-scripts/ [root@web1 network-scripts]# cp ifcfg-lo ifcfg-lo:0 [root@web1 network-scripts]# vim ifcfg-lo:0 DEVICE=lo:0 ONBOOT=yes IPADDR=192.168.100.100 NETMASK=255.255.255.255 ifup lo:0 [root@web1 network-scripts]# ifconfig lo:0 lo:0: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 inet 192.168.100.100 netmask 255.255.255.255 loop txqueuelen 1 (Local Loopback) route add -host 192.168.100.100 dev lo:0 vim /etc/sysctl.conf net.ipv4.conf.lo.arp_ignore=1 net.ipv4.conf.lo.arp_announce=2 net.ipv4.conf.all.arp_ignore=1 net.ipv4.conf.all.arp_announce=2 sysctl -p
负载均衡器重启keepalived
systemctl restart keepalived.service [root@ha01 ~]# ipvsadm -ln IP Virtual Server version 1.2.1 (size=4096) Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConn TCP 192.168.100.100:80 rr -> 192.168.100.30:80 Route 1 0 0 -> 192.168.100.40:80 Route 1 0 0
访问192.168.100.100 二三十秒刷新实现静态网页负载
访问192.168.100.100/test/index.jsp 刷新实现动态网页负载
依然可以访问网页并且实现负载
