Re: Signature V2

[jan hugo prins <jprins@xxxxxxxxxxxx>]

I believe the same, but when you use V4 from s3cmd or the AWS S3 java API you get intermittend signature errors.
Only after returning to V2 those errors are gone.

Jan Hugo

On 08/18/2016 03:51 PM, Chris Jones wrote:

I believe RGW Hammer and below use V2 and Jewel and above use V4.

Thanks

On Thu, Aug 18, 2016 at 7:32 AM, jan hugo prins <jprins@xxxxxxxxxxxx> wrote:

did some more searching and according to some info I found RGW should
support V4 signatures.

http://tracker.ceph.com/issues/10333
http://tracker.ceph.com/issues/11858

The fact that everyone still modifies s3cmd to use Version 2 Signatures
suggests to me that we have a bug in this code.

If I use V4 signatures most of my requests work fine, but some requests
fail on a signature error.

Thanks,
Jan Hugo Prins

On 08/18/2016 12:46 PM, jan hugo prins wrote:
> Hi everyone.
>
> To connect to my S3 gateways using s3cmd I had to set the option
> signature_v2 in my s3cfg to true.
> If I didn't do that I would get Signature mismatch errors and this seems
> to be because Amazon uses Signature version 4 while the S3 gateway of
> Ceph only supports Signature Version 2.
>
> Now I see the following error in a Jave project we are building that
> should talk to S3.
>
> Aug 18, 2016 12:12:38 PM org.apache.catalina.core.StandardWrapperValve
> invoke
> SEVERE: Servlet.service() for servlet [Default] in context with path
> [/VehicleData] threw exception
> com.betterbe.vd.web.servlet.LsExceptionWrapper: xxxxxxxxxxxxxxxxxxxxxxx
> caused: com.amazonaws.services.s3.model.AmazonS3Exception: null
> (Service: Amazon S3; Status Code: 400; Error Code:
> XAmzContentSHA256Mismatch; Request ID:
> tx000000000000000002cc6-0057b58a15-25bba-default), S3 Extended Request
> ID: 25bba-default-default
>         at
> com.betterbe.vd.web.dataset.requesthandler.DatasetRequestHandler.handle(DatasetRequestHandler.java:262)
>         at com.betterbe.vd.web.servlet.Servlet.handler(Servlet.java:141)
>         at com.betterbe.vd.web.servlet.Servlet.doPost(Servlet.java:110)
>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:646)
>
> To me this looks a bit the same, though I'm not a Java developer.
> Am I correct, and if so, can I tell the Java S3 client to use Version 2
> signatures?
>
>

--
Met vriendelijke groet / Best regards,

Jan Hugo Prins
Infra and Isilon storage consultant

Better.be B.V.
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--

Best Regards,

Chris Jones

cjones@xxxxxxxxxxx

(p) 770.655.0770

-- 
Met vriendelijke groet / Best regards,

Jan Hugo Prins
Infra and Isilon storage consultant

Better.be B.V.
Auke Vleerstraat 140 E | 7547 AN Enschede | KvK 08097527
T +31 (0) 53 48 00 694 | M +31 (0)6 26 358 951
jprins@xxxxxxxxxxxx | www.betterbe.com

This e-mail is intended exclusively for the addressee(s), and may not
be passed on to, or made available for use by any person other than 
the addressee(s). Better.be B.V. rules out any and every liability 
resulting from any electronic transmission.

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