Docker容器无法从github.com克隆

Question

我目前正在尝试使用HypriotOS版本0.6.1在Raspberry Pi 2上运行docker容器。不幸的是，在我的家庭网络上，我无法从GitHub克隆。

root@aaeac2ab909d:/home/meteor# GIT_CURL_VERBOSE=1 git clone --depth 1 https://github.com/4commerce-technologies-AG/meteor.git
Cloning into 'meteor'...
* Couldn't find host github.com in the .netrc file; using defaults
* Hostname was NOT found in DNS cache
*   Trying 192.30.252.129...
* Connected to github.com (192.30.252.129) port 443 (#0)
* found 173 certificates in /etc/ssl/certs/ca-certificates.crt
*    server certificate verification OK
*    common name: github.com (matched)
*    server certificate expiration date OK
*    server certificate activation date OK
*    certificate public key: RSA
*    certificate version: #3
*    subject: 
*    start date: Tue, 08 Apr 2014 00:00:00 GMT

*    expire date: Tue, 12 Apr 2016 12:00:00 GMT

*    issuer: C=US,O=DigiCert Inc,OU=www.digicert.com,CN=DigiCert SHA2 Extended Validation Server CA
*    compression: NULL
*    cipher: AES-128-GCM
*    MAC: AEAD
> GET /4commerce-technologies-AG/meteor.git/info/refs?service=git-upload-pack HTTP/1.1
User-Agent: git/2.1.4
Host: github.com
Accept: */*
Accept-Encoding: gzip
Pragma: no-cache

< HTTP/1.1 200 OK
* Server GitHub Babel 2.0 is not blacklisted
< Server: GitHub Babel 2.0
< Content-Type: application/x-git-upload-pack-advertisement
< Transfer-Encoding: chunked
< Expires: Fri, 01 Jan 1980 00:00:00 GMT
< Pragma: no-cache
< Cache-Control: no-cache, max-age=0, must-revalidate
< Vary: Accept-Encoding
< X-GitHub-Request-Id: 4B8A08F2:2C58:14CD5B7:56972928
< 
* Connection #0 to host github.com left intact
* Couldn't find host github.com in the .netrc file; using defaults
* Found bundle for host github.com: 0x83cdf8
* Re-using existing connection! (#0) with host github.com
* Connected to github.com (192.30.252.129) port 443 (#0)
> POST /4commerce-technologies-AG/meteor.git/git-upload-pack HTTP/1.1
User-Agent: git/2.1.4
Host: github.com
Accept-Encoding: gzip
Content-Type: application/x-git-upload-pack-request
Accept: application/x-git-upload-pack-result
Content-Length: 205

* upload completely sent off: 205 out of 205 bytes
< HTTP/1.1 200 OK
* Server GitHub Babel 2.0 is not blacklisted
< Server: GitHub Babel 2.0
< Content-Type: application/x-git-upload-pack-result
< Transfer-Encoding: chunked
< Expires: Fri, 01 Jan 1980 00:00:00 GMT
< Pragma: no-cache
< Cache-Control: no-cache, max-age=0, must-revalidate
< Vary: Accept-Encoding
< X-GitHub-Request-Id: 4B8A08F2:2C58:14CD5EE:56972928
< 
* Connection #0 to host github.com left intact
* Couldn't find host github.com in the .netrc file; using defaults
* Found bundle for host github.com: 0x83cdf8
* Re-using existing connection! (#0) with host github.com
* Connected to github.com (192.30.252.129) port 443 (#0)
> POST /4commerce-technologies-AG/meteor.git/git-upload-pack HTTP/1.1
User-Agent: git/2.1.4
Host: github.com
Accept-Encoding: gzip
Content-Type: application/x-git-upload-pack-request
Accept: application/x-git-upload-pack-result
Content-Length: 214

* upload completely sent off: 214 out of 214 bytes
< HTTP/1.1 200 OK
* Server GitHub Babel 2.0 is not blacklisted
< Server: GitHub Babel 2.0
< Content-Type: application/x-git-upload-pack-result
< Transfer-Encoding: chunked
< Expires: Fri, 01 Jan 1980 00:00:00 GMT
< Pragma: no-cache
< Cache-Control: no-cache, max-age=0, must-revalidate
< Vary: Accept-Encoding
< X-GitHub-Request-Id: 4B8A08F2:2C58:14CD635:56972929
< 
remote: Counting objects: 2610, done.
remote: Compressing objects: 100% (2235/2235), done.
* GnuTLS recv error (-54): Error in the pull function.B/s   
* Closing connection 0
error: RPC failed; result=56, HTTP code = 200| 2.90 MiB/s   
fatal: The remote end hung up unexpectedly
fatal: early EOF
fatal: index-pack failed

每次像时钟工作一样发生此错误。我把系统带到了一个新的网络，它运行得很好，这表明我的家庭网络出了问题。

我怀疑这与使用DNSMasq的路由器本地DNS设置有关，但我并不积极。以下是我路由器上的DNSMasq选项：

路由器DNSMasq设置

主机/etc/resolv.conf

nameserver 127.0.1.1
search home.lan

Container /etc/resolv.conf

domain home.lan
search home.lan
nameserver 192.168.11.1

有趣的是，今晚我决定尝试使用--net=host标志运行我的容器，想知道它是否与docker的网桥和我的网络设置有关。这显然也完美无缺！

成功的容器git clone

root@black-pearl:/home/meteor# GIT_CURL_VERBOSE=1 git clone --depth 1 https://github.com/4commerce-technologies-AG/meteor.git
Cloning into 'meteor'...
* Couldn't find host github.com in the .netrc file; using defaults
* Hostname was NOT found in DNS cache
*   Trying 192.30.252.128...
* Connected to github.com (192.30.252.128) port 443 (#0)
* found 173 certificates in /etc/ssl/certs/ca-certificates.crt
*    server certificate verification OK
*    common name: github.com (matched)
*    server certificate expiration date OK
*    server certificate activation date OK
*    certificate public key: RSA
*    certificate version: #3
*    subject: 
*    start date: Tue, 08 Apr 2014 00:00:00 GMT

*    expire date: Tue, 12 Apr 2016 12:00:00 GMT

*    issuer: C=US,O=DigiCert Inc,OU=www.digicert.com,CN=DigiCert SHA2 Extended Validation Server CA
*    compression: NULL
*    cipher: AES-128-GCM
*    MAC: AEAD
> GET /4commerce-technologies-AG/meteor.git/info/refs?service=git-upload-pack HTTP/1.1
User-Agent: git/2.1.4
Host: github.com
Accept: */*
Accept-Encoding: gzip
Pragma: no-cache

< HTTP/1.1 200 OK
* Server GitHub Babel 2.0 is not blacklisted
< Server: GitHub Babel 2.0
< Content-Type: application/x-git-upload-pack-advertisement
< Transfer-Encoding: chunked
< Expires: Fri, 01 Jan 1980 00:00:00 GMT
< Pragma: no-cache
< Cache-Control: no-cache, max-age=0, must-revalidate
< Vary: Accept-Encoding
< X-GitHub-Request-Id: 4B8A08F2:59C7:1E862A2:56972ABF
< 
* Connection #0 to host github.com left intact
* Couldn't find host github.com in the .netrc file; using defaults
* Found bundle for host github.com: 0xb83df8
* Re-using existing connection! (#0) with host github.com
* Connected to github.com (192.30.252.128) port 443 (#0)
> POST /4commerce-technologies-AG/meteor.git/git-upload-pack HTTP/1.1
User-Agent: git/2.1.4
Host: github.com
Accept-Encoding: gzip
Content-Type: application/x-git-upload-pack-request
Accept: application/x-git-upload-pack-result
Content-Length: 205

* upload completely sent off: 205 out of 205 bytes
< HTTP/1.1 200 OK
* Server GitHub Babel 2.0 is not blacklisted
< Server: GitHub Babel 2.0
< Content-Type: application/x-git-upload-pack-result
< Transfer-Encoding: chunked
< Expires: Fri, 01 Jan 1980 00:00:00 GMT
< Pragma: no-cache
< Cache-Control: no-cache, max-age=0, must-revalidate
< Vary: Accept-Encoding
< X-GitHub-Request-Id: 4B8A08F2:59C7:1E86326:56972ABF
< 
* Connection #0 to host github.com left intact
* Couldn't find host github.com in the .netrc file; using defaults
* Found bundle for host github.com: 0xb83df8
* Re-using existing connection! (#0) with host github.com
* Connected to github.com (192.30.252.128) port 443 (#0)
> POST /4commerce-technologies-AG/meteor.git/git-upload-pack HTTP/1.1
User-Agent: git/2.1.4
Host: github.com
Accept-Encoding: gzip
Content-Type: application/x-git-upload-pack-request
Accept: application/x-git-upload-pack-result
Content-Length: 214

* upload completely sent off: 214 out of 214 bytes
< HTTP/1.1 200 OK
* Server GitHub Babel 2.0 is not blacklisted
< Server: GitHub Babel 2.0
< Content-Type: application/x-git-upload-pack-result
< Transfer-Encoding: chunked
< Expires: Fri, 01 Jan 1980 00:00:00 GMT
< Pragma: no-cache
< Cache-Control: no-cache, max-age=0, must-revalidate
< Vary: Accept-Encoding
< X-GitHub-Request-Id: 4B8A08F2:59C7:1E863C3:56972AC0
< 
remote: Counting objects: 2610, done.
remote: Compressing objects: 100% (2235/2235), done.
* Connection #0 to host github.com left intact | 2.47 MiB/s   
remote: Total 2610 (delta 245), reused 1412 (delta 149), pack-reused 0
Receiving objects: 100% (2610/2610), 14.26 MiB | 2.34 MiB/s, done.
Resolving deltas: 100% (245/245), done.
Checking connectivity... done.
Checking out files: 100% (2413/2413), done.

我已经尝试在路由器上禁用DNSMasq，但这似乎没有帮助，所以我想知道是否有人有任何想法试图让docker的本地桥模式工作？

Answer 1

我忘记了我在这里问了这个问题。但是，对于那些也遇到过这个问题的人来说。

@aaronlehmann在GitHub Issue #1090上发现了这个解决方案。此问题（可能仍然是）影响AWS实例，但似乎也会影响某些住宅连接。

有两种可能的解决方法：

• 打开conntrack的“自由主义”旗帜：echo 1 > /proc/sys/net/ipv4/netfilter/ip_conntrack_tcp_be_liberal。这会导致conntrack / NAT将TCP窗口外部的数据包视为正在跟踪的流的一部分，而不是将它们标记为无效并导致它们由主机处理。
• 添加规则以删除无效数据包，而不是允许它们触发RST：iptables -I INPUT -m conntrack --ctstate INVALID -j DROP

对我来说，ip_conntrack_tcp_be_liberal在重启后永远不会保留其设置。这需要每次我想使用docker时手动运行上面的命令，所以对我来说最好的解决方案是保存

iptables -I INPUT -m conntrack --ctstate INVALID -j DROP

进入我的iptables。

然后所有问题都消失了！