Connecting to remote host
Varun Nath
varunnath86 at gmail.com
Thu Dec 19 13:24:53 UTC 2019
Okie let me check. No idea what's going wrong. Trying with different
backend servers and all are getting 502.
On Thu, Dec 19, 2019, 6:48 PM Guillaume Quintard <
guillaume at varnish-software.com> wrote:
> varnish doesn't generate 502s, that's your backend misbehaving. Again,
> look at what you are sending to it using varnishlog, and understand what is
> happening, but at this time, this is not a varnish issue.
> --
> Guillaume Quintard
>
>
> On Thu, Dec 19, 2019 at 1:59 PM Varun Nath <varunnath86 at gmail.com> wrote:
>
>> I am getting 502 Operation not permitted error. The log is as below:
>>
>> ObjStatus 502
>> ObjReason Operation not permitted
>>
>> Sorry for the inconvenience ��
>>
>> On Thu, Dec 19, 2019 at 6:15 PM Guillaume Quintard <
>> guillaume at varnish-software.com> wrote:
>>
>>> you need to understand what is going on why the backend is replying with
>>> 403, then we can fix the vcl.
>>>
>>> --
>>> Guillaume Quintard
>>>
>>>
>>> On Thu, Dec 19, 2019 at 1:18 PM Varun Nath <varunnath86 at gmail.com>
>>> wrote:
>>>
>>>> Thank You. Could you please confirm whether the VCL config I have
>>>> shared if fine?
>>>>
>>>> On Thu, Dec 19, 2019 at 5:46 PM Guillaume Quintard <
>>>> guillaume at varnish-software.com> wrote:
>>>>
>>>>> check the backend transaction, and understand why your origin is
>>>>> sending back a 403. This is due to your backend configuration and I can't
>>>>> help you with that.
>>>>>
>>>>> --
>>>>> Guillaume Quintard
>>>>>
>>>>>
>>>>> On Thu, Dec 19, 2019 at 1:03 PM Varun Nath <varunnath86 at gmail.com>
>>>>> wrote:
>>>>>
>>>>>> This is the VCL file am using:
>>>>>>
>>>>>> Note: Host is not a valid one
>>>>>>
>>>>>> vcl 4.0;
>>>>>> import std;
>>>>>> import directors;
>>>>>>
>>>>>> # Default backend definition. Set this to point to your content
>>>>>> server.
>>>>>> backend default {
>>>>>> .host = "remote.host.com";
>>>>>> .port = "80";
>>>>>> }
>>>>>>
>>>>>> sub vcl_init {
>>>>>> new vdir = directors.round_robin();
>>>>>> vdir.add_backend(default);
>>>>>> }
>>>>>>
>>>>>> sub vcl_recv {
>>>>>> unset req.http.proxy;
>>>>>> unset req.http.cookie;
>>>>>> set req.http.x-host = "http://remote.host.com";
>>>>>> set req.http.x-clientip = client.ip;
>>>>>> set req.http.x-serverip = server.ip;
>>>>>> set req.http.x-localip = local.ip;
>>>>>> set req.http.x-remoteip = remote.ip;
>>>>>> unset req.http.X-Forwarded-For;
>>>>>> set req.http.x-forwarded-for = client.ip;
>>>>>> return(pass);
>>>>>> }
>>>>>>
>>>>>> sub vcl_backend_response {
>>>>>> # Happens after we have read the response headers from the
>>>>>> backend.
>>>>>> #
>>>>>> # Here you clean the response headers, removing silly Set-Cookie
>>>>>> headers
>>>>>> # and other mistakes your backend does.
>>>>>> }
>>>>>>
>>>>>> sub vcl_deliver {
>>>>>> # Happens when we have all the pieces we need, and are about to
>>>>>> send the
>>>>>> # response to the client.
>>>>>> }
>>>>>>
>>>>>> Please let me know if I need to add something more to make the remote
>>>>>> host caching from localhost varnish
>>>>>>
>>>>>> On Thu, Dec 19, 2019 at 5:05 PM Varun Nath <varunnath86 at gmail.com>
>>>>>> wrote:
>>>>>>
>>>>>>> Hello,
>>>>>>> I got some response via CURL. But getting 403 Forbidden message. Log
>>>>>>> is as below:
>>>>>>> * BerespStatus 403*
>>>>>>> * BerespReason Forbidden*
>>>>>>> Also tried setting
>>>>>>>
>>>>>>> *remove req.http.X-Forwarded-For;set req.http.x-forwarded-for =
>>>>>>> client.ip;*
>>>>>>> But didnt work.
>>>>>>> Could you please share your thoughts?
>>>>>>>
>>>>>>> On Thu, Dec 19, 2019 at 3:00 PM Varun Nath <varunnath86 at gmail.com>
>>>>>>> wrote:
>>>>>>>
>>>>>>>> Thank You so much for your support. Will try this and let you know
>>>>>>>>
>>>>>>>> On Thu, Dec 19, 2019 at 2:49 PM Guillaume Quintard <
>>>>>>>> guillaume at varnish-software.com> wrote:
>>>>>>>>
>>>>>>>>> The backend portion of the vcl only handles the TCP part of the
>>>>>>>>> equation. If your backend expect a specific host, you need to either have
>>>>>>>>> the client give it, or have varnish override it.
>>>>>>>>>
>>>>>>>>> Try curl -I localhost/your/file -H "host:
>>>>>>>>> whatever.your.host.is.com"
>>>>>>>>>
>>>>>>>>> On Thu, Dec 19, 2019, 09:02 Varun Nath <varunnath86 at gmail.com>
>>>>>>>>> wrote:
>>>>>>>>>
>>>>>>>>>> Yes, I tried with http://locahost, but that is expected, right?
>>>>>>>>>> since the backend server is configured in VCL file. Sorry if I am wrong
>>>>>>>>>>
>>>>>>>>>> On Thu, Dec 19, 2019 at 2:29 PM Guillaume Quintard <
>>>>>>>>>> guillaume at varnish-software.com> wrote:
>>>>>>>>>>
>>>>>>>>>>> Note: please keep the mailing list CC'd
>>>>>>>>>>>
>>>>>>>>>>> Check the host header you are sending to the backend. Usually, a
>>>>>>>>>>> 404 arises because the URL and/or the host wrong.
>>>>>>>>>>>
>>>>>>>>>>> I'm thinking you possibly tested varnish requesting something
>>>>>>>>>>> like http://localhost/your/test/file, but your backend isn't
>>>>>>>>>>> configured to reply to the "localhost" host
>>>>>>>>>>>
>>>>>>>>>>> On Thu, Dec 19, 2019, 08:55 Varun Nath <varunnath86 at gmail.com>
>>>>>>>>>>> wrote:
>>>>>>>>>>>
>>>>>>>>>>>> Thanks again for the quick response.
>>>>>>>>>>>> I have checked the log and getting the expected IP address in *BackendStart
>>>>>>>>>>>> *parameter. Sorry I didnt get what you mean by you need to
>>>>>>>>>>>> change *the host header before sending the request to the
>>>>>>>>>>>> backend. *Could you please elaborate a little bit?
>>>>>>>>>>>>
>>>>>>>>>>>> On Thu, Dec 19, 2019 at 2:20 PM Guillaume Quintard <
>>>>>>>>>>>> guillaume at varnish-software.com> wrote:
>>>>>>>>>>>>
>>>>>>>>>>>>> Hi,
>>>>>>>>>>>>>
>>>>>>>>>>>>> Use varnishlog -b (with possibly -d) to see the backend
>>>>>>>>>>>>> transactions and see what IP is being used (is it the right one). It could
>>>>>>>>>>>>> also be that you need to change the host header before sending the request
>>>>>>>>>>>>> to the backend.
>>>>>>>>>>>>>
>>>>>>>>>>>>> Cheers,
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> On Thu, Dec 19, 2019, 08:39 Varun Nath <varunnath86 at gmail.com>
>>>>>>>>>>>>> wrote:
>>>>>>>>>>>>>
>>>>>>>>>>>>>> Hello,
>>>>>>>>>>>>>> I need to connect to a remote host from local VCL config
>>>>>>>>>>>>>> file. I have added the backend config as below
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> backend default {
>>>>>>>>>>>>>> .host = "remote.host.com";
>>>>>>>>>>>>>> }
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> But am getting Page not available message. Do I miss
>>>>>>>>>>>>>> something?
>>>>>>>>>>>>>> Thanks in advance
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> --
>>>>>>>>>>>>>> VARUN NATH A V
>>>>>>>>>>>>>> _______________________________________________
>>>>>>>>>>>>>> varnish-misc mailing list
>>>>>>>>>>>>>> varnish-misc at varnish-cache.org
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> https://www.varnish-cache.org/lists/mailman/listinfo/varnish-misc
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> --
>>>>>>>>>>>> VARUN NATH A V
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> --
>>>>>>>>>> VARUN NATH A V
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>>> --
>>>>>>>> VARUN NATH A V
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> VARUN NATH A V
>>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> VARUN NATH A V
>>>>>>
>>>>>
>>>>
>>>> --
>>>> VARUN NATH A V
>>>>
>>>
>>
>> --
>> VARUN NATH A V
>>
>
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