question Re: Create encryption zones in Support Questions

Create encryption zones

sadek_mostefai — Wed, 09 Nov 2016 02:59:03 GMT

Hi,

I am having issues while creating an encryption zone using the HDFS super-user (hdfs). I can list leys just fine but when I exec the create zone command I get:

[hdfs@myhost ~]$ hdfs crypto -createZone -keyName ezkey2 -path /enc_zone2/ 16/11/08 18:46:41 WARN retry.RetryInvocationHandler: Exception while invoking ClientNamenodeProtocolTranslatorPB.createEncryptionZone over sm04.atlnp1/10.121.41.198:8020. Not retrying because try once and fail. org.apache.hadoop.ipc.RemoteException(java.io.FileNotFoundException): cannot find /enc_zone2

Any idea what may be causing this?

Thanks,

Sadek

Re: Create encryption zones

srai1 — Wed, 09 Nov 2016 03:18:18 GMT

Can you trying creating an encryption zone on a path which already exists on HDFS ? The error says that it cannot find /enc_zone2. Trying doing "hdfs dfs -mkdir -p /enc_zone2 and then execute this command.

Re: Create encryption zones

sshimpi — Wed, 09 Nov 2016 03:20:00 GMT

@Sadek M

Did you created encrypted zone as per doc below -

hdfs dfs -mkdir /zone_encr

http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.3.0/bk_hdfs_admin_tools/content/config-use-hdfs-encr.html

Can you paste output of below command -

$hadoop key list -metadata
$hdfs crypto -listZones
$hdfs dfs -ls -R /enc_zone2

I suspect the sub-directory structure is not created hence its giving error.

Re: Create encryption zones

sshimpi — Wed, 09 Nov 2016 03:20:43 GMT

Please do check Ranger-HDFS repository policy also for hdfs user in Ranger webui.

Re: Create encryption zones

sadek_mostefai — Thu, 10 Nov 2016 02:26:07 GMT

The provisioning script should have created it but it hadn't. Thanks!

Re: Create encryption zones

sashakhan150 — Sat, 18 May 2019 15:09:02 GMT

Cryptocurrency blockchain system is based on encrypted code system. All crypto platform is logically encrypted with algorithms. Now am looking for Zcash euro .