Re: Object Gateway - Server Side Encryption

[Casey Bodley <cbodley@xxxxxxxxxx>]

On 03/08/2018 07:16 AM, Amardeep Singh wrote:

Hi,

I am trying to configure server side encryption using Key Management Service as per documentation http://docs.ceph.com/docs/master/radosgw/encryption/

Configured Keystone/Barbican integration and its working, tested using curl commands. After I configure RadosGW and use boto.s3.connection from python or s3cmd client an error is thrown.

boto.exception.S3ResponseError: S3ResponseError: 403 Forbidden
<?xml version="1.0" encoding="UTF-8"?><Error><Code>AccessDenied</Code><Message>Failed to retrieve the actual key, kms-keyid: 616b2ce2-053a-41e3-b51e-0ff53e33cf81</Message><BucketName>newbucket</BucketName><RequestId>tx000000000000000077750-005aa1274b-ac51-uk-west</RequestId><HostId>ac51-uk-west-uk</HostId></Error>

In server side logs its getting the token and barbican is authenticating the request then providing secret url, but unable to serve key.

 22:10:03.940091 7f056f7eb700 15 ceph_armor ret=16
 22:10:03.940111 7f056f7eb700 15 supplied_md5=eb1a3227cdc3fedbaec2fe38bf6c044a
 22:10:03.940129 7f056f7eb700 20 reading from uk-west.rgw.meta:root:.bucket.meta.newbucket:ee560b67-c330-4fd0-af50-aefff93735d2.4163.1
 22:10:03.940138 7f056f7eb700 20 get_system_obj_state: rctx=0x7f056f7e39f0 obj=uk-west.rgw.meta:root:.bucket.meta.newbucket:ee560b67-c330-4fd0-af50-aefff93735d2.4163.1 state=0x56540487a5a0 s->prefetch_data=0
 22:10:03.940145 7f056f7eb700 10 cache get: name=uk-west.rgw.meta+root+.bucket.meta.newbucket:ee560b67-c330-4fd0-af50-aefff93735d2.4163.1 : hit (requested=0x16, cached=0x17)
 22:10:03.940152 7f056f7eb700 20 get_system_obj_state: s->obj_tag was set empty
 22:10:03.940155 7f056f7eb700 10 cache get: name=uk-west.rgw.meta+root+.bucket.meta.newbucket:ee560b67-c330-4fd0-af50-aefff93735d2.4163.1 : hit (requested=0x11, cached=0x17)
 22:10:03.944015 7f056f7eb700 20 bucket quota: max_objects=1638400 max_size=-1
 22:10:03.944030 7f056f7eb700 20 bucket quota OK: stats.num_objects=7 stats.size=50
 22:10:03.944176 7f056f7eb700 20 Getting KMS encryption key for key=616b2ce2-053a-41e3-b51e-0ff53e33cf81
 22:10:03.944225 7f056f7eb700 20 Requesting secret from barbican url="" class="moz-txt-link-freetext" href="http://keyserver.rados:5000/v3/auth/tokens" moz-do-not-send="true">http://keyserver.rados:5000/v3/auth/tokens
 22:10:03.944281 7f056f7eb700 20 sending request to http://keyserver.rados:5000/v3/auth/tokens
 22:10:04.405974 7f056f7eb700 20 sending request to http://keyserver.rados:9311/v1/secrets/616b2ce2-053a-41e3-b51e-0ff53e33cf81
 22:10:05.519874 7f056f7eb700 5 Failed to retrieve secret from barbican:616b2ce2-053a-41e3-b51e-0ff53e33cf81

It looks like this request is being rejected by barbican. Do you have any logs on the barbican side that might show why?

 22:10:05.519901 7f056f7eb700 5 ERROR: failed to retrieve actual key from key_id: 616b2ce2-053a-41e3-b51e-0ff53e33cf81
 22:10:05.519980 7f056f7eb700 2 req 387:1.581432:s3:PUT /encrypted.txt:put_obj:completing
 22:10:05.520187 7f056f7eb700 2 req 387:1.581640:s3:PUT /encrypted.txt:put_obj:op status=-13
 22:10:05.520193 7f056f7eb700 2 req 387:1.581645:s3:PUT /encrypted.txt:put_obj:http status=403
 22:10:05.520206 7f056f7eb700 1 ====== req done req=0x7f056f7e5190 op status=-13 http_status=403 ======
 22:10:05.520225 7f056f7eb700 20 process_request() returned -13
 22:10:05.520280 7f056f7eb700 1 civetweb: 0x5654042a1000: 192.168.100.200 - - [02/Mar/2018:22:10:03 +0530] "PUT /encrypted.txt HTTP/1.1" 1 0 - Boto/2.38.0 Python/2.7.12 Linux/4.12.1-041201-generic
 22:10:06.116527 7f056e7e9700 20 HTTP_ACCEPT=*/*

The error thrown in from this line https://github.com/ceph/ceph/blob/master/src/rgw/rgw_crypt.cc#L1063

I am unable to understand why its throwing the error.

In ceph.conf following settings are done.

[global]
rgw barbican url = "" class="moz-txt-link-freetext" href="http://keyserver.rados:9311" moz-do-not-send="true">http://keyserver.rados:9311
rgw keystone barbican user = rgwcrypt
rgw keystone barbican password = rgwpass
rgw keystone barbican project = service
rgw keystone barbican domain = default
rgw keystone url = "" class="moz-txt-link-freetext" href="http://keyserver.rados:5000" moz-do-not-send="true">http://keyserver.rados:5000
rgw keystone api version = 3
rgw crypt require ssl = false

Can someone help in figuring out what is missing.

Thanks,
Amar

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