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From "Wei-Chiu Chuang (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (HADOOP-14445) Delegation tokens are not shared between KMS instances
Date Tue, 13 Mar 2018 14:59:02 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-14445?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16397069#comment-16397069
] 

Wei-Chiu Chuang edited comment on HADOOP-14445 at 3/13/18 2:58 PM:
-------------------------------------------------------------------

Thanks a lot [~xiaochen] [~shahrs87], [~daryn], [~yzhangal] and [~asuresh] 's valuable comments
and patch coding. This is a tricky case and it impacts a number of our customers (as well
as partner software). I haven't pay attention to the development of this Jira but just synced
up with [~xiaochen] on the latest patch. The approach totally makes sense to me.

I am reviewing the latest patch and will post review comments later today(-ish).


was (Author: jojochuang):
Thanks a lot [~xiaochen] [~shahrs87], [~daryn], [~yzhangal] and [~asuresh] 's valuable comments
and patch coding. This is a tricky case and it impacts a number of our customers (as well
as partner software). I haven't pay attention to the development of this Jira but synced up
with [~xiaochen] on the latest patch. Totally makes sense to me.

I am reviewing the latest patch and will post review comments later today(-ish).

> Delegation tokens are not shared between KMS instances
> ------------------------------------------------------
>
>                 Key: HADOOP-14445
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14445
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: kms
>    Affects Versions: 2.8.0, 3.0.0-alpha1
>         Environment: CDH5.7.4, Kerberized, SSL, KMS-HA, at rest encryption
>            Reporter: Wei-Chiu Chuang
>            Assignee: Xiao Chen
>            Priority: Major
>         Attachments: HADOOP-14445-branch-2.8.002.patch, HADOOP-14445-branch-2.8.patch,
HADOOP-14445.002.patch, HADOOP-14445.003.patch, HADOOP-14445.004.patch, HADOOP-14445.05.patch,
HADOOP-14445.06.patch
>
>
> As discovered in HADOOP-14441, KMS HA using LoadBalancingKMSClientProvider do not share
delegation tokens. (a client uses KMS address/port as the key for delegation token)
> {code:title=DelegationTokenAuthenticatedURL#openConnection}
> if (!creds.getAllTokens().isEmpty()) {
>         InetSocketAddress serviceAddr = new InetSocketAddress(url.getHost(),
>             url.getPort());
>         Text service = SecurityUtil.buildTokenService(serviceAddr);
>         dToken = creds.getToken(service);
> {code}
> But KMS doc states:
> {quote}
> Delegation Tokens
> Similar to HTTP authentication, KMS uses Hadoop Authentication for delegation tokens
too.
> Under HA, A KMS instance must verify the delegation token given by another KMS instance,
by checking the shared secret used to sign the delegation token. To do this, all KMS instances
must be able to retrieve the shared secret from ZooKeeper.
> {quote}
> We should either update the KMS documentation, or fix this code to share delegation tokens.



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