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From "Xiao Chen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-14445) Use DelegationTokenIssuer to create KMS delegation tokens that can authenticate to all KMS instances
Date Mon, 15 Oct 2018 03:46:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-14445?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16649691#comment-16649691

Xiao Chen commented on HADOOP-14445:

[~daryn] sadly this needs an addendum for 2 things:
 * {{DelegationTokenIssuer}} class was recursively 'org/apache/hadoop/security/token' package
twice... sorry didn't catch this during review
 * It caused 2 test failures in TestEncryptionZones. Pre-commit smartly skipped hadoop-hdfs
(only ran hadoop-hdfs-client and hadoop-common), and it's caught when I try to backport to
CDH where a full unit test was carried out. Out of the 2 failures, {{testDelegationToken}}
needs to update the way it's mocked, and {{addMockKmsToken}} (another test method) caused
mockito to give up, refusing to call the method on interface...

(For thoroughness, internal pre-commit also complained about API compat, saying {{addDelegationTokens}}
is removed from FileSystem and DistributedFileSystem; it also noted the same method is added
to DelegationTokenIssuer, but not able to use the latter as a clue to cross off the former.
So this part is clearly to be overruled)

> 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
>             Fix For: 3.2.0, 3.0.4, 3.1.2
>         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.addemdum.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.branch-3.0.001.patch, HADOOP-14445.compat.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
> 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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