[systemd-devel] Removing image from /var/lib/machines

[Peter Paule]

Zitat von Lennart Poettering <lennart at poettering.net>:

> On Thu, 19.02.15 19:46, Peter Paule (systemd-devel at fedux.org) wrote:
>
>> BTW:
>>
>> --dkr-index-url cannot handle http redirects
>>
>> By accident I tried "http://index.docker.io" and this will be redirected to
>> "https://index.docker.io" but importd cannot handle this.
>
> I think this is actually a problem on the setup of the servers, not
> the client side.

Look at this:

   % curl http://index.docker.io -I
   HTTP/1.1 302 Found
   Server: nginx/1.6.2
   Date: Fri, 20 Feb 2015 13:12:50 GMT
   Content-Type: text/html
   Content-Length: 160
   Location: https://index.docker.io/
   Connection: keep-alive

If you try to get things from http://index.docker.io it will tell you,  
that you
need to use https://index.docker.io/ instead. It might be questionable if 302
really the best status code for this - maybe they should better use 301 for
this. So, yes looking at 301 and 302 it is a server problem somehow, but not
following 302 is kind of a client problem as well I think.

But why not doing it like `curl -L`. It works both with http status 301 and
302.

   % curl http://index.docker.io -I -L

   HTTP/1.1 302 Found
   Server: nginx/1.6.2
   Date: Fri, 20 Feb 2015 13:19:27 GMT
   Content-Type: text/html
   Content-Length: 160
   Location: https://index.docker.io/
   Connection: keep-alive

   HTTP/1.1 200 Connection established

   HTTP/1.1 301 MOVED PERMANENTLY
   Server: nginx/1.6.2
   Date: Fri, 20 Feb 2015 13:19:28 GMT
   Content-Type: text/html; charset=utf-8
   Connection: close
   X-Frame-Options: SAMEORIGIN
   Location: https://registry.hub.docker.com/
   Strict-Transport-Security: max-age=31536000

   HTTP/1.1 200 Connection established

   HTTP/1.1 200 OK
   Server: nginx/1.6.2
   Date: Fri, 20 Feb 2015 13:19:28 GMT
   Content-Type: text/html; charset=utf-8
   Content-Length: 16966
   Connection: close
   Vary: Cookie
   X-Frame-Options: SAMEORIGIN
   Strict-Transport-Security: max-age=31536000

/pp