如何使用 envoyloadbalancer 在同一个 public IP 上路由多个域

Question

这是我的架构 architecture

我想将多个域绑定到同一个 IP 地址例如，当我在浏览器中输入 foo.com 时，我看到了 webapp1 当我在浏览器中输入 bar.com 时，我找到了 webapp2 。为此，我有两个 webapp： webapp1 在 ip 1111:5000

webapp2 在 ip 1111:6000

这是我的特使版本

envoy  version: d362e791eb9e4efa8d87f6d878740e72dc8330ac/1.18.2/clean-getenvoy-76c310e-envoy/RELEASE/BoringSSL

这是我的配置 envoy.yaml :

static_resources:
  listeners:
  - address:
      socket_address:
        address: 0.0.0.0
        port_value: 80
    filter_chains:
    - filters:
      - name: envoy.http_connection_manager
        typed_config:
          "@type": type.googleapis.com/envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager
          codec_type: AUTO
          stat_prefix: ingress_http
          route_config:
            name: local_route
            virtual_hosts:
            - name: foo.com
              domains:
              - "foo.com"
              routes:
              - match:
                  prefix: "/"
                route:
                  cluster: service_foo
            - name: bar.com
              domains:
              - "bar.com"
              routes:
              - match:
                  prefix: "/"
                route:
                  cluster: service_bar
          http_filters:
          - name: envoy.router
            typed_config: {}
  clusters:
  - name: service_foo
    connect_timeout: 1.00s
    type: strict_dns
    lb_policy: round_robin
    load_assignment:
      cluster_name: service_foo
      endpoints:
      - lb_endpoints:
        - endpoint:
            address:
              socket_address:
                address: 1.1.1.1
                port_value: 5000
                ipv4_compat: true
  - name: service_bar
    connect_timeout: 1.00s
    type: strict_dns
    lb_policy: round_robin
    load_assignment:
      cluster_name: service_bar
      endpoints:
      - lb_endpoints:
        - endpoint:
            address:
              socket_address:
                address: 1.1.1.1
                port_value: 6000
                ipv4_compat: true
  
admin:
  access_log_path: "/dev/null"
  address:
    socket_address:
      address: 0.0.0.0
      port_value: 8001

当我在我的浏览器中输入时 foo.com 有效，但 bar.com 无效。有什么问题请帮帮我。

Answer 1

我做了同样的测试，但 YAML 配置文件略有不同。

我认为每个服务端点必须是内部 IP 地址（私有）。这是一个示例：我在 docker 上有两个 Web 应用程序运行：端口 3000 上的 start 和端口 8080 上的 blog . docker 图片在这里：https://hub.docker.com/r/ang67/blog and https://hub.docker.com/r/ang67/getting-started

static_resources:
  listeners:
  - address:
      socket_address:
        address: 0.0.0.0
        port_value: 80
    filter_chains:
    - filters:
      - name: envoy.filters.network.http_connection_manager
        typed_config:
          "@type": type.googleapis.com/envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager
          codec_type: AUTO
          stat_prefix: ingress_http
          route_config:
            name: local_route
            virtual_hosts:
            - name: start.com
              domains:
              - "start.com"
              routes:
              - match:
                  prefix: "/"
                route:
                  cluster: service_start
            - name: blog.com
              domains:
              - "blog.com"
              routes:
              - match:
                  prefix: "/"
                route:
                  cluster: service_blog
          http_filters:
          - name: envoy.filters.http.router
            typed_config: {}
  clusters:
  - name: service_start
    connect_timeout: 1.00s
    type: strict_dns
    lb_policy: round_robin
    load_assignment:
      cluster_name: service_start
      endpoints:
      - lb_endpoints:
        - endpoint:
            address:
              socket_address:
                address: 172.17.0.1
                port_value: 3000
                ipv4_compat: true
  - name: service_blog
    connect_timeout: 1.00s
    type: strict_dns
    lb_policy: round_robin
    load_assignment:
      cluster_name: service_blog
      endpoints:
      - lb_endpoints:
        - endpoint:
            address:
              socket_address:
                address: 172.17.0.1
                port_value: 8080
                ipv4_compat: true
  
admin:
  access_log_path: "/dev/null"
  address:
    socket_address:
      address: 0.0.0.0
      port_value: 8001

运行集装箱上的特使：

docker run --rm -it \
    -v $(pwd)/envoy-custom.yaml:/envoy-custom.yaml \
    -p 9901:9901 \
    -p 80:80 \
    envoyproxy/envoy-dev:2e6db8378477a4a63740746c5bfeb264cd76bc34 \
    -c /envoy-custom.yaml

运行:

curl -H "Host: start.com" http://localhost
curl -H "Host: blog.com" http://localhost

或者在您的 etc/hosts 中为 start.com 和 blog.com 进行映射，以便在浏览器中启动

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