我正在使用 nginx-proxy 将子域连接到不同的 docker 服务。由于最后一次图像更新之一，我无法再连接到我的 gitlab 实例。我不知道 nginx-proxy 或 gitlab 更新是否导致了这个问题。当我尝试连接到 gitlab.mydomain.com 时，出现以下错误:

1. 浏览器:502 错误网关。 nginx/1.13.3

2. nginx-proxy 日志:

   nginx-proxy_1 | nginx.1 | 2017/08/14 11:44:10 [错误] 39#39: *1672 connect() 在连接到上游时失败(111:连接被拒绝)，客户端:178.201.120.94，服务器:gitlab.mydomain.com，请求: “GET/HTTP/2.0”，上游:“https://172.18.0.2:443/”，主机:“gitlab.mydomain.com”

   nginx-proxy_1 | nginx.1 | gitlab.mydomain.com 178.201.120.94 - - [14/Aug/2017:11:44:10 +0000] "GET/HTTP/2.0"502 575 "-""Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.90 Safari/537.36"

   nginx-proxy_1 | nginx.1 | 2017/08/14 11:44:11 [错误] 39#39: *1672 connect() 在连接到上游时失败(111:连接被拒绝)，客户端:178.201.120.94，服务器:gitlab.mydomain.com，请求: “GET/favicon.ico HTTP/2.0”，上游:“https://172.18.0.2:443/favicon.ico”，主机:“gitlab.mydomain.com”，引用者:“https://gitlab.***.com/”

我的 docker-compose 文件:

version: '2'

services:
   nginx-proxy:
     image: jwilder/nginx-proxy
     ports:
     - "80:80"
     - "443:443"
     volumes:
     - /var/local/nginx/certs:/etc/nginx/certs
     - /etc/letsencrypt:/etc/letsencrypt
     - /var/run/docker.sock:/tmp/docker.sock:ro

   gitlab:
     image: gitlab/gitlab-ce:latest
     ports:
     - "2222:22"
     hostname: 'gitlab.***.com'
     expose:
     - 443
     - 22
     - 80
     - 25
     environment:
     - "VIRTUAL_HOST=gitlab.***.com,www.gitlab.***.com"
     - "VIRTUAL_PORT=443"
     - "VIRTUAL_PROTO=https"
     volumes:
     - "gitlab-config:/etc/gitlab"
     - "gitlab-log:/var/log/gitlab"
     - "gitlab-data:/var/opt/gitlab"
     - "/etc/letsencrypt:/etc/letsencrypt"

对此有什么想法吗？谢谢。
编辑: 来自 docker inspect gitlab 的网络设置:

    "NetworkSettings": {
        "Bridge": "",
        "SandboxID": "...",
        "HairpinMode": false,
        "LinkLocalIPv6Address": "",
        "LinkLocalIPv6PrefixLen": 0,
        "Ports": {
            "22/tcp": [
                {
                    "HostIp": "0.0.0.0",
                    "HostPort": "2222"
                }
            ],
            "25/tcp": null,
            "443/tcp": null,
            "80/tcp": null
        },
        "SandboxKey": "/var/run/docker/netns/...",
        "SecondaryIPAddresses": null,
        "SecondaryIPv6Addresses": null,
        "EndpointID": "",
        "Gateway": "",
        "GlobalIPv6Address": "",
        "GlobalIPv6PrefixLen": 0,
        "IPAddress": "",
        "IPPrefixLen": 0,
        "IPv6Gateway": "",
        "MacAddress": "",
        "Networks": {
            "docker_default": {
                "IPAMConfig": null,
                "Links": null,
                "Aliases": [
                    "abb170528bcc",
                    "gitlab"
                ],
                "NetworkID": "...",
                "EndpointID": "...",
                "Gateway": "172.18.0.1",
                "IPAddress": "172.18.0.2",
                "IPPrefixLen": 16,
                "IPv6Gateway": "",
                "GlobalIPv6Address": "",
                "GlobalIPv6PrefixLen": 0,
                "MacAddress": "02:42:ac:12:00:02"
            }
        }
    }

最佳答案

这个设置对我有用，也许你可以比较一下，找出问题所在:

https://superuser.com/a/1242682/762931

也许是这样: https://gitlab.com/gitlab-org/omnibus-gitlab/issues/1307

关于通过 nginx 代理的 Docker 环境导致 502 Bad Gateway，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/45673864/