HAProxy path_beg error - 503 service unavailable

SoT

7/28/23, 12:04 PM

Given a backend that running on:

172.18.1.125:8888

curl tested:

curl --location --request GET "http://172.18.1.125:8888/oauth/sign-key"
sample_response    //>> HERE IS RESPONSE

On another host, I install and config haproxy:

global
    log         /dev/log local0
    chroot      /var/lib/haproxy
    pidfile     /var/run/haproxy.pid
    maxconn     4000
    debug
    user        haproxy
    group       haproxy
    daemon

    stats socket /var/lib/haproxy/stats
    ssl-default-bind-ciphers PROFILE=SYSTEM
    ssl-default-server-ciphers PROFILE=SYSTEM

defaults
    mode                    http
    log                     global
    option                  httplog
    option                  dontlognull
    option http-server-close
    option forwardfor       except 127.0.0.0/8
    option                  redispatch
    retries                 3
    timeout http-request    10s
    timeout queue           1m
    timeout connect         10s
    timeout client          1m
    timeout server          1m
    timeout http-keep-alive 10s
    timeout check           10s
    maxconn                 3000

frontend api_gateway
    bind :80
    acl PATH_auth path_beg /api/authorization/

    use_backend be_auth if PATH_auth

backend be_auth
    server s1 172.18.1.125:8888
    http-request set-header Host 172.18.1.125

After that I use curl to test my haproxy:

curl --location --request GET "http://localhost/api/authorization/oauth/sign-key"

I expect that this request will be route to:

http://172.18.1.125:8888/oauth/sign-key

But I got 503 error instead:

<html><body><h1>503 Service Unavailable</h1>
No server is available to handle this request.
</body></html>

What am I wrong or missing?

0 + 0

linux

centos

reverse-proxy

haproxy

centos7

Score:1

Server

richv

8/1/23, 8:27 PM

im guessing you are going to http://172.18.1.125:8888/api/authorization/oauth/sign-key instead of 172.18.1.125:8888/oauth/sign-key like you expect cause you are doing nothing to strip out 'api/authorization' ... try this backend:

backend be_auth
    http-request set-path %[path,regsub(^/api/authorization/,/)]
    server s1 172.18.1.125:8888

0 + 0

SoT

8/2/23, 4:29 AM

Thanks, it works

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: HAProxy path_beg error - 503 service unavailable

TH: ข้อผิดพลาด HAProxy path_beg - บริการ 503 ไม่พร้อมใช้งาน

RO: Eroare HAProxy path_beg - serviciu 503 indisponibil

RU: Ошибка HAProxy path_beg — служба 503 недоступна

VI: Lỗi HAProxy path_beg - Dịch vụ 503 không khả dụng

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