nginx+tomcat负载均衡

1、准备三台服务器

192.168.52.34   nginx

192.168.52.35   tomcat1

192.168.52.36   tomcat2

2、关闭防火墙

[root@localhost ~]# systemctl stop firewalld
[root@localhost ~]# setenforce 0

3、在192.168.52.34安装nginx

[root@localhost ~]# rz

[root@localhost ~]# ls
anaconda-ks.cfg  nginx-1.16.1.tar.gz  original-ks.cfg
[root@localhost ~]# 

4、安装编译文件

[root@localhost ~]# yum -y install gcc gcc-c++ pcre-devel zlib-devel

5、解压、安装、编译nginx

[root@localhost ~]# tar zxf nginx-1.16.1.tar.gz 
[root@localhost ~]# cd nginx-1.16.1/
[root@localhost nginx-1.16.1]# ./configure && make && make install

6、开启nginx

[root@localhost nginx-1.16.1]# /usr/local/nginx/sbin/nginx 

7、在192.168.52.35上安装tomcat

[root@localhost ~]# rz

[root@localhost ~]# ls
anaconda-ks.cfg  apache-tomcat-8.5.35.tar.gz  jdk-8u131-linux-x64_.rpm  original-ks.cfg

8、解压tomcat、jdk

[root@localhost ~]# tar zxf apache-tomcat-8.5.35.tar.gz 
[root@localhost ~]# rpm -ivh jdk-8u131-linux-x64_.rpm 
Preparing...                          ################################# [100%]
Updating / installing...
   1:jdk1.8.0_131-2000:1.8.0_131-fcs  ################################# [100%]
Unpacking JAR files...
    tools.jar...
    plugin.jar...
    javaws.jar...
    deploy.jar...
    rt.jar...
    jsse.jar...
    charsets.jar...
    localedata.jar...
[root@localhost ~]# 

9、将tomcat复制到opt/tomcat中并开启

[root@localhost ~]# cp -r apache-tomcat-8.5.35 /opt/tomcat
[root@localhost ~]# cd /opt/tomcat/
[root@localhost tomcat]# ls
bin  BUILDING.txt  conf  CONTRIBUTING.md  lib  LICENSE  logs  NOTICE  README.md  RELEASE-NOTES  RUNNING.txt  temp  webapps  work
[root@localhost tomcat]# cd bin/
[root@localhost bin]# ./startup.sh 
Using CATALINA_BASE:   /opt/tomcat
Using CATALINA_HOME:   /opt/tomcat
Using CATALINA_TMPDIR: /opt/tomcat/temp
Using JRE_HOME:        /usr
Using CLASSPATH:       /opt/tomcat/bin/bootstrap.jar:/opt/tomcat/bin/tomcat-juli.jar
Tomcat started.

10、编写测试页面

[root@localhost bin]# cd /opt/tomcat/webapps/ROOT/
[root@localhost ROOT]# mv index.jsp index.pl
[root@localhost ROOT]# ls
asf-logo-wide.svg  bg-middle.png    bg-nav.png    favicon.ico  RELEASE-NOTES.txt  tomcat.gif  tomcat-power.gif  WEB-INF
bg-button.png      bg-nav-item.png  bg-upper.png  index.pl     tomcat.css         tomcat.png  tomcat.svg
[root@localhost ROOT]# vim index.jsp

1111

11、在192.168.52.36上安装tomcat2

[root@localhost ~]# rz

[root@localhost ~]# ls
anaconda-ks.cfg  apache-tomcat-8.5.35.tar.gz  jdk-8u131-linux-x64_.rpm  original-ks.cfg
[root@localhost ~]# tar zxf apache-tomcat-8.5.35.tar.gz 
[root@localhost ~]# rpm -ivh jdk-8u131-linux-x64_.rpm 
Preparing...                          ################################# [100%]
Updating / installing...
   1:jdk1.8.0_131-2000:1.8.0_131-fcs  ################################# [100%]
Unpacking JAR files...
    tools.jar...
    plugin.jar...
    javaws.jar...
    deploy.jar...
    rt.jar...
    jsse.jar...
    charsets.jar...
    localedata.jar...
[root@localhost ~]# cp -r apache-tomcat-8.5.35 /opt/tomcat
[root@localhost ~]# cd /opt/tomcat/
[root@localhost tomcat]# ls
bin  BUILDING.txt  conf  CONTRIBUTING.md  lib  LICENSE  logs  NOTICE  README.md  RELEASE-NOTES  RUNNING.txt  temp  webapps  work
[root@localhost tomcat]# cd bin/
[root@localhost bin]# ./startup.sh 
Using CATALINA_BASE:   /opt/tomcat
Using CATALINA_HOME:   /opt/tomcat
Using CATALINA_TMPDIR: /opt/tomcat/temp
Using JRE_HOME:        /usr
Using CLASSPATH:       /opt/tomcat/bin/bootstrap.jar:/opt/tomcat/bin/tomcat-juli.jar
Tomcat started.

[root@localhost bin]# cd /opt/tomcat/webapps/
[root@localhost webapps]# ls
docs  examples  host-manager  manager  ROOT
[root@localhost webapps]# cd ROOT/
[root@localhost ROOT]# mv index.jsp index.pl
[root@localhost ROOT]# vim index.jsp

2222

12、编写nginx配置文件

在配置文件加入
vim /usr/local/nginx/conf/nginx.conf

#keepalive_timeout  0;
    keepalive_timeout  65;

    upstream zcy {
                server 192.168.52.35:8080;
                server 192.168.52.36:8080;
              }
    #gzip  on;

    server {
        listen       80;
        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location / {
                proxy_pass http://zcy;
        }

13、重启nginx

[root@localhost ~]# pkill nginx
[root@localhost ~]# /usr/local/nginx/sbin/nginx 

14、不断刷新nginxIP地址，就实现负载均衡