#http模块内
http {include       mime.types;default_type  application/octet-stream;log_format main '[$time_local][$msec]$status';sendfile        on;keepalive_timeout  65;proxy_cache_path  /var/nginx/cache  keys_zone=one:10m  levels=1:2  inactive=6h max_size=1g;###限流配置limit_conn_zone $binary_remote_addr zone=perip:10m;limit_conn_log_level info;limit_conn_status 503;    include conf.d/*.conf;
}

#server模块内
server {listen        80;server_name  _;root         /opt/openresty/nginx/html;charset utf-8;proxy_send_timeout 60;proxy_read_timeout 1800s;client_max_body_size 300M ;proxy_set_header X-Forwarded-Host $host;proxy_set_header X-Forwarded-Server $host;proxy_set_header Host $host:$server_port;proxy_set_header X-Real-IP $remote_addr;proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;  #---限流配置--#location /limit {limit_conn perip 2;proxy_pass http://backend/cache;}    #-----------#error_page 404 /404.html;location = /40x.html {}error_page 500 502 503 504 /50x.html;location = /50x.html {}
}

#http模块内
http {include       mime.types;default_type  application/octet-stream;log_format main '[$time_local][$msec]$status';sendfile        on;keepalive_timeout  65;proxy_cache_path  /var/nginx/cache  keys_zone=one:10m  levels=1:2  inactive=6h max_size=1g;###限流配置:每s处理一个请求limit_req_zone $binary_remote_addr zone=req:10m rate=1r/s;limit_conn_log_level info;limit_conn_status 503;    include conf.d/*.conf;}

server {listen        80;server_name  _;root         /opt/openresty/nginx/html;charset utf-8;proxy_send_timeout 60;proxy_read_timeout 1800s;client_max_body_size 300M ;proxy_set_header X-Forwarded-Host $host;proxy_set_header X-Forwarded-Server $host;proxy_set_header Host $host:$server_port;proxy_set_header X-Real-IP $remote_addr;proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;#zone=one ：设置使用哪个配置区域来做限制，与上面limit_req_zone 里的name对应#burst=5：设置一个大小为5的缓冲区当有大量请求（爆发）过来时，超过了访问频次限制的请求可以先放到这个缓冲区内等待，但是这个等待区里的位置只有5个，超过的请求会直接报503的错误然后返回。#nodelay：#   如果设置，会在瞬时提供处理(burst + rate)个请求的能力，请求超过（burst + rate）的时候就会直接返回503，永远不存在请求需要等待的情况。（这里的rate的单位是：r/s）#   如果没有设置，则所有请求会依次等待排队location /limit_req {limit_req zone=req burst=3 nodelay;proxy_pass http://backend/cache;}    error_page 404 /404.html;location = /40x.html {}error_page 500 502 503 504 /50x.html;location = /50x.html {}
}

http {include       mime.types;default_type  application/octet-stream;log_format main '[$time_local][$msec]$status';sendfile        on;keepalive_timeout  65;lua_shared_dict my_limit_conn_store 100m;limit_conn_log_level info;limit_conn_status 503;    include conf.d/*.conf;
}

server {listen        80;server_name  _;root         /opt/openresty/nginx/html;charset utf-8;proxy_send_timeout 60;proxy_read_timeout 1800s;client_max_body_size 300M ;proxy_set_header X-Forwarded-Host $host;proxy_set_header X-Forwarded-Server $host;proxy_set_header Host $host:$server_port;proxy_set_header X-Real-IP $remote_addr;proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;#限制接口总并发数location /limit_lua_conn {access_by_lua_block {local limit_conn = require "resty.limit.conn"-- 限制一个 ip 客户端最大 1 个并发请求-- burst 设置为 0，如果超过最大的并发请求数，则直接返回503，-- 如果此处要允许突增的并发数，可以修改 burst 的值（漏桶的桶容量）-- 最后一个参数其实是你要预估这些并发（或者说单个请求）要处理多久，以便于对桶里面的请求应用漏桶算法local lim, err = limit_conn.new("my_limit_conn_store",2,1,0.5)if not lim thenngx.log(ngx.ERR,"限流:",err)return ngx.exit(503)endlocal key = ngx.var.binary_remote_addrlocal delay, err = lim:incoming(key, true)if not delay thenif err == "rejected" thenreturn ngx.exit(503)endngx.log(ngx.ERR, "failed to limit req:", err)return ngx.exit(500)end}proxy_pass http://backend/cache;}#error_page 404 /404.html;location = /40x.html {}error_page 500 502 503 504 /50x.html;location = /50x.html {}
}

upstream name{server 192.168.0.21:80;server 192.168.0.22:80;check interval=3000 rise=2 fall=5 timeout=1000;
}
#对所有节点，每个3秒检测一次，请求2次正常则标记 realserver状态为up，如果检测 5 次都失败，则标记 realserver的状态为down，超时时间为1秒

http {upstream backend {server 120.78.206.183:8080;server 14.116.196.138:8002;}lua_shared_dict healthcheck 1m;lua_socket_log_errors off;init_worker_by_lua_block {local hc = require "resty.upstream.healthcheck"local ok, err = hc.spawn_checker {shm = "healthcheck",upstream = "tomcat",type = "http",#指定后端健康检查http请求接口    http_req = "GET /nginx HTTP/1.0\r\nHost: tomcat\r\n\r\n",interval = 2000,timeout = 5000,fall = 3,rise = 2,#http请求接口返回200，302表示服务端正常valid_statuses = {200, 302},concurrency = 1,}if not ok thenngx.log(ngx.ERR, "=======> failed to spawn health checker: ", err)returnend}server {listen      80;server_name localhost;location ^~ /cache {proxy_cache one;proxy_no_cache $http_soapaction;proxy_cache_key $request_body;proxy_cache_valid 200 302 10m;proxy_cache_methods GET POST;proxy_ignore_headers Cache-Control Set-Cookie;proxy_set_header X-Real-IP $remote_addr;proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;proxy_pass http://backend/cache;}location /server/status {access_log off;default_type text/plain;content_by_lua_block {local hc = require "resty.upstream.healthcheck"ngx.say("Nginx Worker PID: ", ngx.worker.pid())ngx.print(hc.status_page())}}}
}