linux nginx服务 反向代理 负载均衡 nfs服务

一、nginx服务

1.首先软件停用firewall

shell

systemctl stop firewalld

stop:本次停用
disable：开机停用
enable：开机启用
```shell```
#ps aux | grep firewalld     #检查是否停用

2.关闭内核防火墙

shell

vim /etc/selinux/config

![](http://images2015.cnblogs.com/blog/1122851/201703/1122851-20170320172347486-819807972.png)
需要重启linux
##3.yum安装nginx以及依赖包
```shell```
#yum install epel-release -y     #添加nginx仓库（epel-release）
#yum install nginx -y     #安装nginx

4.修改配置文件

shell

vim /etc/nginx/nginx.conf

![](http://images2015.cnblogs.com/blog/1122851/201703/1122851-20170320164414924-1121470243.png)
##5.重读nginx配置文件
```shell```
#systemctl reload nginx

restart：重新打开
status：查看状态
nginx服务开启：

6.动态查看nginx进程日志

shell

tail -f /var/log/nginx/access.log

![](http://images2015.cnblogs.com/blog/1122851/201703/1122851-20170320195959471-1150958589.png)

#二、nfs服务
首先：
服务端ip：192.168.185.130
web1:192.168.185.134
web2:192.168.185.133
web3:192.168.185.132
##1.服务端yum安装nfs和RPC服务
```shell```
#yum install rpcbind nfs-utils -y

新建输出目录share，增加写权限
shell

mkdir /share

chmod -R o+w /share/ #增加写权限

##2.服务端修改配置文件
```shell```
#vim /etc/exports

添加：
shell
/share 192.168.185.0/24(rw,sync,fsid=0)

##3.服务端设置开机启动nfs和rpcbind
```shell```
#systemctl enable nfs-server.service
#systemctl enable rpcbind.service

4.服务端启动nfs和rpcbind

shell

systemctl start nfs-server.service

systemctl start rpcbind.service

##5.web1（客户端）配置
```shell```
#yum install rpcbind nfs-utils -y   
#systemctl enable rpcbind.service      #rpcbind开机启动
#systemctl start rpcbind.serive    #启动rpcbind
#showmount -e  192.168.185.130   #查看服务端是否有共享目录
#mount -t nfs 192.168.185.130:/share /var/www/html/   #挂载服务端／share目录

配置成功：

三、ngix反向代理

1.修改nginx.conf

shell

vim /etc/nginx/nginx.conf

nginx官网介绍负载均衡（Using nginx as HTTP load balancer）
http://nginx.org/en/docs/http/load_balancing.html

##2.实现基于轮询的方式
```shell```
http {
    upstream myapp1 {
        server srv1.example.com;
        server srv2.example.com;
        server srv3.example.com;
    }

    server {
        listen 80;

        location / {
            proxy_pass http://myapp1;
        }
    }
}

3.实现基于权重的方式

shell
upstream myapp1 {
server srv1.example.com weight=3;
server srv2.example.com;
server srv3.example.com;
}

##4.实现基于hash的方式
```shell```
upstream myapp1 {
    ip_hash;
    server srv1.example.com;
    server srv2.example.com;
    server srv3.example.com;
}