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https://issues.apache.org/jira/browse/HADOOP-14445?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16648100#comment-16648100
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Xiao Chen commented on HADOOP-14445:
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Thanks Daryn for the elaboration, good catch.
I have committed this to trunk. Will update release notes and attach backport
patches for pre-commit. Also put Rushabh's name in it since he worked on the
earlier patch, and some tests were written by him. :)
[~daryn]: are you interested in having this in branch-2.8? We'd need to modify
the DelegationTokenIssuer to compile with java7. I'm happy to do it, but would
like to check it's what you want (and produce less conflict for Yahoo's
internal version, if there's one).
> Use DelegationTokenIssuer to create KMS delegation tokens that can
> authenticate to all 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, HADOOP-14445.07.patch, HADOOP-14445.08.patch,
> HADOOP-14445.09.patch, HADOOP-14445.10.patch, HADOOP-14445.11.patch,
> HADOOP-14445.12.patch, HADOOP-14445.13.patch, HADOOP-14445.14.patch,
> HADOOP-14445.15.patch, HADOOP-14445.16.patch, HADOOP-14445.17.patch,
> HADOOP-14445.18.patch, HADOOP-14445.19.patch, HADOOP-14445.20.patch,
> HADOOP-14445.branch-2.000.precommit.patch,
> HADOOP-14445.branch-2.001.precommit.patch, HADOOP-14445.branch-2.01.patch,
> HADOOP-14445.branch-2.02.patch, HADOOP-14445.branch-2.03.patch,
> HADOOP-14445.branch-2.04.patch, HADOOP-14445.branch-2.05.patch,
> HADOOP-14445.branch-2.06.patch, HADOOP-14445.branch-2.8.003.patch,
> HADOOP-14445.branch-2.8.004.patch, HADOOP-14445.branch-2.8.005.patch,
> HADOOP-14445.branch-2.8.006.patch, HADOOP-14445.branch-2.8.revert.patch,
> HADOOP-14445.compat.patch, HADOOP-14445.revert.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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