在服务器部署的时候,可能会发生404错误,这时候 可以将请求转发到正常的tomcat
可以实现无感升级和不停机部署
转发了
http_404 http_500 http_502 http_503 http_504
#设定负载均衡的服务器列表
upstream minds {
#weight为服务器权重,权值越高被分配到的几率越大,max_fails最大超时次数,fail_timeout服务器代理被挂起的时间
#ip_hash;
server 192.168.2.117:8080 weight=1 max_fails=2 fail_timeout=30s;
server 127.0.0.1:8080 weight=99 max_fails=2 fail_timeout=30s;
}
server {
listen 8020;
server_name 127.5.5.5;
location / {
root html;
index index.html index.htm;
proxy_pass http://minds;
#proxy_redirect off;
# 后端的Web服务器可以通过X-Forwarded-For获取用户真实IP
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_connect_timeout 1s;
proxy_send_timeout 30s;
proxy_read_timeout 3s;
proxy_next_upstream error timeout invalid_header http_404 http_500 http_502 http_503 http_504;
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
}
原理参考:
http://saiyaren.iteye.com/blog/1914865
https://bbs.csdn.net/topics/392283483?page=1