Nginx反向代理和负载均衡

Nginx反向代理和负载均衡原文

Nginx负载均衡案例

主机	Ip	安装	系统
Nginx	192.168.40.99	Nginx	RHEL8/CentOS8
Rs1	192.168.100.100	Httpd	RHEL8/CentOS8
Rs2	192.168.100.101	Httpd Tomcat	RHEL8/CentOS8

关闭三台防火墙和selinux

# systemctl status firewalld.service 
● firewalld.service - firewalld - dynamic firewall daemon
   Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
   Active: inactive (dead)
     Docs: man:firewalld(1)
[root@nginx ~]# getenforce 
Disabled

配置yum源配置yum源

cd /etc/yum.repos.d/
wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-vault-8.5.2111.repo
yum install -y https://mirrors.aliyun.com/epel/epel-release-latest-8.noarch.rpm

源码部署nginx

创建nginx服务用户

[root@nginx ~]# useradd -r -M -s /sbin/nologin nginx
[root@nginx ~]# id nginx 
uid=975(nginx) gid=974(nginx) 组=974(nginx)

安装依赖环境

[root@nginx ~]# dnf -y install pcre-devel openssl openssl-devel gd-devel gcc gcc-c++ make
[root@nginx ~]# dnf -y groups mark install 'Development Tools'
上次元数据过期检查：0:13:17 前，执行于 2022年10月09日 星期日 23时39分57秒。
依赖关系解决。
=============================================================================================================
 软件包                   架构                    版本                        仓库                      大小
=============================================================================================================
安装组:
 Development Tools                                                                                          

事务概要
=============================================================================================================

完毕！

创建日志存放目录

[root@nginx ~]# cd /var/log/
[root@nginx log]# mkdir nginx
[root@nginx log]# chown -R nginx.nginx /var/log/nginx/
[root@nginx log]# ll /var/log/ | grep nginx
drwxr-xr-x  2 nginx  nginx        6 10月  9 23:54 nginx

安装nginx

[root@nginx ~]# cd /usr/local/
[root@nginx local]# wget http://nginx.org/download/nginx-1.22.0.tar.gz
--2022-10-09 23:59:20--  http://nginx.org/download/nginx-1.22.0.tar.gz
正在解析主机 nginx.org (nginx.o