Async Rest API calls going from Traefik to Spring boot container is throwing 302 status code

Traefik Traefik v2
,
1

I have sync & async rest apis in Spring Boot container.
User sends the request to port 9182 and traefik forwards this request to backend spring-boot container.

But it returns 302 status code.
Same async rest api is working fine if I run directly inside from spring-boot container.

Even, sync rest API are working fine from outside of container forwarded via Traefik.
Only Async rest apis are throwing this 302 status code when ran from outside.

Is there any specific config for Async rest API?

2

Share your full Traefik static and dynamic config, and docker-compose.yml if used.

Format your code with 3 backticks in front and after, or select the code and press </> . In yaml every space matters. And it makes it so much more readable for people trying to help you.

In the meantime, check this simple Traefik example .

3

Hi @bluepuma77

Please see the config below:

Traefik.yaml file:

version: "3.8"

networks:
  core-net:
    external: true

services:
  loadbalancer:
    image: "traefik:v2.4.8"
    command:
      - "--log.level=DEBUG"
      - "--providers.docker=true"
      - "--providers.docker.swarmMode=true"
      - "--providers.docker.watch=true"
      - "--providers.docker.exposedbydefault=false"
      - "--providers.file.filename=/dynamic-conf.toml"
      - "--api.insecure=true"
      - "--log.filePath=/var/log/vnms/traefik/traefik.log"
      - "--accessLog.filePath=/var/log/vnms/traefik/access.log"
      - "--entrypoints.web-secure.address=:443"
      - "--entrypoints.web.address=:80"
      - "--entrypoints.backend-rest.address=:9182"
    ports:
      - '8010:8080'
      - '8070:8080'
      - '80:80'
      - '443:443'
      - '9182:9182'
    volumes:
      - "/var/run/docker.sock:/var/run/docker.sock:ro"
      - "/var/tmp/vnms/share/config/manifest/dynamic-conf.toml:/dynamic-conf.toml"
      - "/var/tmp/vnms/share/certs/:/certs/"
      - "/var/log/vnms/traefik:/var/log/vnms/traefik"
      - "/etc/localtime:/etc/localtime:ro"
      - "/etc/timezone:/etc/timezone:ro"
    deploy:
      restart_policy:
        condition: any
      mode: global
    networks:
      - core-net

dynamic-conf.toml file:

[tls.options]
  [tls.options.default]
    minVersion = "VersionTLS12"
    cipherSuites = [
      "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256",
      "TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384",
      "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256",
      "TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384",
      "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256",
      "TLS_AES_256_GCM_SHA384",
      "TLS_CHACHA20_POLY1305_SHA256",
      "TLS_AES_128_GCM_SHA256"
    ]

[[tls.certificates]]
  certFile = "/certs/abc.crt"
  keyFile = "/certs/abc.key"
  stores = ["default"]

[tls.stores]
  [tls.stores.default]
    [tls.stores.default.defaultCertificate]
      certFile = "/certs/abc.crt"
      keyFile = "/certs/abc.key"

spring-boot.yml file having rest API hosted:

version: '3.8'

volumes:
  ncs-data:
    external: true

networks:
  mgmt-net:
    external: true
  core-net:
    external: true
  kafka-net:
    external: true

services:

  backend-service:
    image: 'spring-boot:latest'
    ports:
      - '8002:8002'
      - '9090:9090'
    extra_hosts:
      - "host.docker.internal:host-gateway"
    volumes:
      - type: bind
        source: /var/log/vnms
        target: /var/log/vnms
    networks:
      - core-net
      - kafka-net
    deploy:
      labels:
        - "traefik.enable=true"
        - "traefik.docker.network=core-net"
        - "traefik.backend-service.port=9182"
        - "traefik.http.routers.backend-secure.entrypoints=backend-rest"
        - "traefik.http.routers.backend-secure.rule=Host(`0.0.0.0`)||hostregexp(`{host:.+}`)||PathPrefix(`/`, )"
        - "traefik.http.routers.backend-secure.service=backend-service"
        - "traefik.http.services.backend-service.loadbalancer.sticky.cookie=false"
        - "traefik.http.services.backend-service.loadbalancer.server.port=9182"
        - "traefik.http.routers.backend-secure.tls=true"
        - "traefik.http.routers.backend-secure.tls.options=default"
      restart_policy:
        condition: any