是否有办法将Nginx配置为同时向多个上游服务器广播传入请求?
下面的片段将一次选择一个服务器。有没有一种方法可以一次把它们全部击中是否有办法将Nginx配置为同时向多个上游服务器广播传入请求?,nginx,Nginx,下面的片段将一次选择一个服务器。有没有一种方法可以一次把它们全部击中 upstream backend { server 17.0.0.1:8000; server 17.0.0.1:8001; server 17.0.0.1:8002; server 17.0.0.1:8003; } server { location / { proxy_pass http://backend; } } 今天我遇到了一个类似的情况,我想对我
upstream backend {
server 17.0.0.1:8000;
server 17.0.0.1:8001;
server 17.0.0.1:8002;
server 17.0.0.1:8003;
}
server {
location / {
proxy_pass http://backend;
}
}
今天我遇到了一个类似的情况,我想对我的一些服务器发布一个GET,这些服务器正在监听API以触发git拉取。我在Nginx中找不到任何东西来处理这种行为,我也不想马上编写扩展 相反,我使用Python的Flask和Requests模块拼凑了一些东西:
from flask import Flask, jsonify, request
import requests
app = Flask(__name__)
# add whatever you need here to the methods
@app.route("/http/replay/<method>", methods=["POST", "GET", "PUT", "OPTIONS"])
def http_replay(method):
"""Replay an incoming request of type <method> against the parameter list of endpoints"""
endpoint_list = request.args.get("host", "")
endpoint_list = endpoint_list.split(";")
timeout = request.args.get("timeout", None) or 5
if not endpoint_list:
return jsonify(status=500,
message="Expected parameters in the form of ?host=http://host/path;host=http://host2/path")
else:
responses = []
for ep in endpoint_list:
try:
_r = requests.__getattribute__(method.lower())(ep, timeout=timeout)
status_code = _r.status_code
except requests.exceptions.Timeout:
status_code = 408 # request timeout
except requests.exceptions.RequestException:
status_code = 520
responses.append(status_code)
_r_status = set(responses)
if len(_r_status) == 1 and _r_status.pop == 200:
status = 200
else:
status = 520
return jsonify(status=status)
如果URL参数中的所有端点都执行相同操作,则返回HTTP 200状态代码。如果您使用Lua模块构建了nginx(或使用OpenResty),则以下代码段将允许您向上游组中的所有服务器广播响应 请求是并行进行的,一旦完成,它将返回单个HTTP响应和响应头
upstream @api {
server 10.0.0.1:80;
server 10.0.0.2:80 backup;
}
server {
server_name _;
listen 443 ssl;
location ~ ^/broadcast(?<proxy_path>/.*)$ {
lua_need_request_body on;
content_by_lua '
local upstream = require "ngx.upstream"
local servers = upstream.get_servers("@api")
local requests = {}
for _, srv in ipairs(servers) do
local addr = srv.addr
table.insert(requests, { "/proxy", { method = ngx["HTTP_" .. ngx.var.request_method], always_forward_body = true, copy_all_vars = true, vars = { proxy_host = addr } } })
end
local responses = { ngx.location.capture_multi(requests) }
for i, res in ipairs(responses) do
local addr = servers[i].addr
ngx.say(addr, " HTTP/1.1 ", res.status)
for header, value in pairs(res.header) do
ngx.say(header, ": ", value)
end
ngx.say()
ngx.print(res.body)
ngx.say()
end
';
}
location /proxy {
internal;
proxy_pass http://$proxy_host$proxy_path$is_args$args;
}
}
上游@api{
服务器10.0.0.1:80;
服务器10.0.0.2:80备份;
}
服务器{
服务器名称;
听443ssl;
位置~^/广播(?/*)${
lua_需要______________________________;
内容由
本地上游=需要“ngx.上游”
本地服务器=上游。获取服务器(“@api”)
本地请求={}
对于u,IPAIR(服务器)中的srv
本地地址=srv.addr
insert(请求,{/proxy',{method=ngx[“HTTP....ngx.var.request.\u method],始终\u forward\u body=true,copy\u all\u vars=true,vars={proxy\u host=addr}})
结束
本地响应={ngx.location.capture_multi(请求)}
对于i,ipairs(响应)中的res
本地地址=服务器[i]。地址
ngx.say(地址,“HTTP/1.1”,res.status)
对于标头,成对的值(res.header)do
ngx.say(标题“:”,值)
结束
ngx.say()
ngx.print(res.body)
ngx.say()
结束
';
}
位置/代理{
内部的;
proxy\u pass http://$proxy\u host$proxy\u path$is\u args$args;
}
}
以下是一个使用(自nginx 1.13.4起提供)的解决方案:
nginx将:
- 向所有服务器发送相同的请求
- 等待他们全部完成
- 以回应回应(并忽略其他回应)
upstream @api {
server 10.0.0.1:80;
server 10.0.0.2:80 backup;
}
server {
server_name _;
listen 443 ssl;
location ~ ^/broadcast(?<proxy_path>/.*)$ {
lua_need_request_body on;
content_by_lua '
local upstream = require "ngx.upstream"
local servers = upstream.get_servers("@api")
local requests = {}
for _, srv in ipairs(servers) do
local addr = srv.addr
table.insert(requests, { "/proxy", { method = ngx["HTTP_" .. ngx.var.request_method], always_forward_body = true, copy_all_vars = true, vars = { proxy_host = addr } } })
end
local responses = { ngx.location.capture_multi(requests) }
for i, res in ipairs(responses) do
local addr = servers[i].addr
ngx.say(addr, " HTTP/1.1 ", res.status)
for header, value in pairs(res.header) do
ngx.say(header, ": ", value)
end
ngx.say()
ngx.print(res.body)
ngx.say()
end
';
}
location /proxy {
internal;
proxy_pass http://$proxy_host$proxy_path$is_args$args;
}
}
server {
location / {
proxy_pass http://17.0.0.1:8000;
mirror /s1;
mirror /s2;
mirror /s3;
}
location /s1 { internal; proxy_pass http://17.0.0.1:8001$request_uri; }
location /s2 { internal; proxy_pass http://17.0.0.1:8002$request_uri; }
location /s3 { internal; proxy_pass http://17.0.0.1:8003$request_uri; }
}