Centos7 上的 Docker :连接被拒绝

Question

我知道已经就类似问题发布了一些问题，但不幸的是，我仍然无法使以下命令正常工作：

$sudo 码头工人运行你好世界

无法在本地找到图像"hello-world：最新" docker：来自守护程序的错误响应：获取 https://registry-1.docker.io/v2/：拨打 tcp 52.54.216.153：443：getsockopt：连接被拒绝。 请参阅"docker run --help"。

我在VirtualBox上使用CentOS7虚拟机，并在系统级别配置了HTTP/https/FTP代理设置。此代理配置在Chrome和其他应用程序上运行良好。

浏览此论坛后，我尝试通过以下方式为 Docker 应用程序创建显式代理设置：

• 创建一个 ~/.docker/config.json 文件，如 https://docs.docker.com/network/proxy/中所述，然后执行"Systemctl restart docker">

• 创建一个/etc/systemd/system/docker.service.d/http-proxy.conf，然后执行"systemctl daemon-reload"和"systemctl restart docker">

以下是我的虚拟机上的 Docker 版本：

$sudo码头工人版本

Client:
Version:      18.03.1-ce
API version:  1.37
Go version:   go1.9.5
Git commit:   9ee9f40
Built:        Thu Apr 26 07:20:16 2018
OS/Arch:      linux/amd64
Experimental: false
Orchestrator: swarm
Server:
Engine:
Version:      18.03.1-ce
API version:  1.37 (minimum version 1.12)
Go version:   go1.9.5
Git commit:   9ee9f40
Built:        Thu Apr 26 07:23:58 2018
OS/Arch:      linux/amd64
Experimental: false

$curl -v https://registry-1.docker.io/v2/

* About to connect() to proxy XXX port 8012 (#0)
...
> 
< HTTP/1.1 200 Connection established
< 
* Proxy replied OK to CONNECT request
* Initializing NSS with certpath: sql:/etc/pki/nssdb
*   CAfile: /etc/pki/tls/certs/ca-bundle.crt
CApath: none
* SSL connection using TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
* Server certificate:
*   subject: CN=*.docker.io
*   start date: Aug 02 00:00:00 2017 GMT
*   expire date: Sep 02 12:00:00 2018 GMT
*   common name: *.docker.io
*   issuer: CN=Amazon,OU=Server CA 1B,O=Amazon,C=US
> GET /v2/ HTTP/1.1
> User-Agent: curl/7.29.0
> Host: registry-1.docker.io
> Accept: */*
> 
< HTTP/1.1 401 Unauthorized
< Content-Type: application/json; charset=utf-8
< Docker-Distribution-Api-Version: registry/2.0
< Www-Authenticate: Bearer realm="https://auth.docker.io/token",service="registry.docker.io"
< Date: Fri, 08 Jun 2018 16:00:17 GMT
< Content-Length: 87
< Strict-Transport-Security: max-age=31536000
< 
{"errors":[{"code":"UNAUTHORIZED","message":"authentication required","detail":null}]}
* Connection #0 to host XXX left intact

$curl -v https://54.152.209.167

...
...
< HTTP/1.1 200 Connection established
< 
* Proxy replied OK to CONNECT request
* Initializing NSS with certpath: sql:/etc/pki/nssdb
*   CAfile: /etc/pki/tls/certs/ca-bundle.crt
CApath: none
* Server certificate:
*   subject: CN=*.docker.io
*   start date: Aug 02 00:00:00 2017 GMT
*   expire date: Sep 02 12:00:00 2018 GMT
*   common name: *.docker.io
*   issuer: CN=Amazon,OU=Server CA 1B,O=Amazon,C=US
* NSS error -12276 (SSL_ERROR_BAD_CERT_DOMAIN)
* Unable to communicate securely with peer: requested domain name does not match the server's certificate.
* Closing connection 0
curl: (51) Unable to communicate securely with peer: requested domain name does not match the server's certificate.

Answer 1

如 https://docs.docker.com/config/daemon/systemd/#httphttps-proxy 所述，以下命令解决了我的问题。它有点迷失在文件，IMO。

$ sudo mkdir -p /etc/systemd/system/docker.service.d
vi /etc/systemd/system/docker.service.d/http-proxy.conf 
[Service]
Environment="http://IP:PORT/"
vi /etc/systemd/system/docker.service.d/https-proxy.conf 
[Service]
Environment="http://IP:PORT/"
$ sudo systemctl daemon-reload
$ sudo systemctl restart docker
$ systemctl show --property=Environment docker
Environment=HTTP_PROXY=http://"http://IP:PORT/"