Nginx入门

A Iღ熊菇凉 2020-11-09 22:19:43
前端 nginx 入门 SegmentFault


Nginx

Nginx命令

1.启动命令 start nginx
2.重启命令 nginx -s reload
3.停止命令 nginx -s stop

编辑Nginx.conf文件

http{
#必须在http协议之内进行配置
server{
listen 80;
server_name "监听域名地址";
location / { root "反向代理的是一个目录";
} }
server{.....}}
#配置图片代理服务器 http://image.jt.com:80
server {
listen 80;
server_name image.jt.com;
location / { root D:/JT-SOFT/images; } }

编辑hosts文件

hosts文件路径:C:Windows/System32/drivers/etc/hosts

#IP 域名 映射关系
127.0.0.1 image.jt.com
127.0.0.1 manage.jt.com
127.0.0.1 www.jt.com
127.0.0.1 sso.jt.com
127.0.0.1 localhost

实现域名的代理

修改Nginx.conf文件

server{
listen 80;
server_name manage.jt.com;
location / {
#代理真实服务器地址
proxy_pass http://localhost:9080;
} }

负载均衡

轮询策略

说明: 按照nginx.conf中配置文件的顺序依次访问.

#配置商品后台服务器
server{
listen 80;
server_name manage.jt.com;
location / { #代理真实服务器地址
#proxy_pass http://localhost:9080;
#映射到集群
proxy_pass http://jtWindows; } }
#配置Tomcat服务器集群 ,默认为 轮询策略
upstresm jtWindows{
server 127.0.0.1:9080;
server 127.0.0.1:9081;
server 127.0.0.1:9082;
}

权重策略

说明: 由于公司的物理服务器可能性能有高有低,为了让高性能的服务器处理更多的数据.

upstream jtWindows {
server 127.0.0.1:8081 weight=6;
server 127.0.0.2:8082 weight=3;
server 127.0.0.3:8083 weight=1;
}

IPHASH策略

说明:如果需要将服务器与IP地址进行绑定时,使用该策略

upstream jtWindows {
ip_hash;
server 127.0.0.1:8081 weight=6;
server 127.0.0.2:8082 weight=3;
server 127.0.0.3:8083 weight=1;}

Nginx属性说明

down属性

说明:如果服务器宕机,或者该服务器不想为用户继续提供服务,则可以采用down属性进行标识.
nginx访问规则: 如果nginx访问的服务器不能正常的响应,则等待超时之后,访问新的服务器.

upstream jtWindows {
server 127.0.0.1:8081 down;
server 127.0.0.1:8082;
server 127.0.0.1:8083;}

backup属性

说明:backup表示备用机.正常情况下,该服务器不会为用户提供服务.但是当服务器宕机,或者服务器正忙时,才会访问该服务器.

upstream jtWindows {
server 127.0.0.1:8081 down;
server 127.0.0.1:8082 down;
server 127.0.0.1:8083 backup;}

tomcat服务器高可用机制

高可用: 当服务器发生故障时,通过某种机制可以自动的实现故障的迁移,从而使得用户不受任何的影响.

upstream jtWindows {
#ip_hash; down 标识宕机 backup 备用机
#max_fails=1 表示最大的失败次数
#fail_timeout=60s 如果访问不通,则在60秒内,不会再次访问故障机
server 127.0.0.1:8081 max_fails=1 fail_timeout=60s;
server 127.0.0.1:8082 max_fails=1 fail_timeout=60s;
server 127.0.0.1:8083 max_fails=1 fail_timeout=60s;}
版权声明
本文为[A Iღ熊菇凉]所创,转载请带上原文链接,感谢
https://segmentfault.com/a/1190000037778330

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