安装并启动nginx服务

1、二进制安装nginx包

~ yum -y install epel-release && yum -y install nginx
#配置环境  关闭防火墙
~ iptables -F        // 或  systemctl stop filewallf

2、作为web服务修改配置文件

~ vim /etc/nginx/nginx.conf      //暂时不修改配置

3、让配置生效，验证配置

~ systemctl start nginx           //启动nginx服务
#systemctl disable firewalld            设置开机也不启动防火墙
#systemctl enable firewalld            开机启动防火墙
#systemctl enable nginx            开机启动nginx
#systemctl status nginx.service     查看nginx服务是否在运行
#systemctl reload nginx                //重新加载配置文件
#nginx -s reload

安装并设置启用nfs服务

1、二进制安装nfs

~ yum -y install nfs

2、作为共享存储挂载在三台web的网站根目录下

• nfs主机操作

~ vim /etc/exports
~ cat /etc/exports
/Nfsdir 192.168.16.0/24(rw,sync,fsid=0)
~ mkdir /Nfsdir
~ echo 'this is a shared directory' > /Nfsdir/index.html

~ chmod -R o+w /Nfsdir          //设置权限
~ systemctl start rpcbind.service      //启动rpc服务
~ systemctl start nfs-server.service   //启动nfs服务
~ exportfs                 //查看是nfs否开启成功
~ showmount -a          //查看当前和那几个客户端有链接
~ showmount -e          //默认查看自己的服务
~ systemctl status rpcbind.service     //查看rpc是否在运行
~ systemctl status nfs-server.service       //查看nfs服务是否在运行
~ vim /etc/nginx/nginx.conf       //修改目录为Nfsdir
~ systemctl reload nginx          //重新加载配置文件

~ systemctl enable nfs-server.service    //  设置开机启动nfs
~ systemctl enable rpc-rquotad.service    //开机启动rpc

• nfs 客户端操作

~ mount -t nfs 192.168.16.180:/Nfsdir /var/www/html
~ vim /etc/nginx/nginx.conf               //修改目录为/var/www/html
~ systemctl reload nginx     //nginx -s reload重新加载配置文件

• 实现，在任意一台web上修改的结果，其余两台都可以看到

nginx反向代理三台web

• 实现基于轮询的方式调度三台web，并验证结果

~ vim /etc/nginx/nginx.conf
http {upstream pythonweb {server 192.168.16.167;server 192.168.16.99:80;server 192.168.16.199;}

• 实现基于权重的方式调度三台web，并验证结果

~ vim /etc/nginx/nginx.conf
http {upstream pythonweb {server 192.168.16.167 weight=3;server 192.168.16.99:80;server 192.168.16.199;}

• 实现基于hash的方式调用三台web，并验证结果

http {upstream pythonweb {ip_hash;server 192.168.16.167;server 192.168.16.99:80;server 192.168.16.199;}

nginx反向代理+三台web+nfs共享存储实现集群配置

# 客户端修改网站根目录为/web
~ mount -t nfs 192.168.16.180:/Nfsdir /web            // vim /etc/fstab     开机就挂载的设备
~ vim /etc/nginx/nginx.conf
~ systemctl reload nginx                //重新加载配置文件
~ vim /etc/selinux/config        //关闭硬件防火墙  改为disabled 需要重启
#setenforce 0  临时关闭防火墙，不需要重启

• vim /etc/fstab

# /etc/fstab
# Created by anaconda on Wed Mar  8 22:54:46 2017
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/cl-root     /                       xfs     defaults        0 0
UUID=4b0a06e7-efa0-464e-b668-8d02da33c482 /boot                   xfs     defaults        0 0
/dev/mapper/cl-swap     swap                    swap    defaults        0 0
#把共享nfs目录开机挂载，公司环境会用到
192.168.16.180:/Nfsdir    /web        nfs        defaults 0 0

源码安装nginx，并按照作业一描述的那样去测试使用

• 下载nginx

~ wget http://nginx.org/download/nginx-1.10.3.tar.gz
~ tar xvf nginx-1.10.3.tar.gz && cd nginx-1.10.3

• 安装nginx

~ ./configure --prefix=/usr/local/nginx
#出现问题
./configure: error: the HTTP rewrite module requires the PCRE library.
You can either disable the module by using --without-http_rewrite_module
option, or install the PCRE library into the system, or build the PCRE library
statically from the source with nginx by using --with-pcre=<path> option.

• 安装yum -y install pcre-devel 解决问题

~ yum -y install pcre-devel
~ ./configure            //成功编译
~ make && make install
~ vim /etc/nginx/nginx.conf             /修改配置文件
~ systemctl start nginx