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https://issues.apache.org/jira/browse/CASSANDRA-13971?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16242001#comment-16242001
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Stefan Podkowinski commented on CASSANDRA-13971:
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Work here is getting ahead nicely. I'm now done with a first implementation
that allows me to authenticate against Vault and retrieve certificates. There's
also a dtest that would download vault (a static go executable), spin up an
instance and bootstrap a Cassandra cluster with SSL Vault support enabled.
There are still some aspects that need some more test coverage, such as
certificate renewal for running Cassandra instances. But I don't see any major
blockers on the way so far.
As for Vault, I've found that Java/JCA is a bit limited when it comes to
supported rsa private key encodings and Vault's PKCS#1 encoded keys could not
be read using the Java standard classes. But a
[PR|https://github.com/hashicorp/vault/pull/3518] has been merged recently that
will enable PKCS#8 support in one of the upcoming Vault releases, which is
going to solve this issue (thanks [~jeffm]!).
> Automatic certificate management using Vault
> --------------------------------------------
>
> Key: CASSANDRA-13971
> URL: https://issues.apache.org/jira/browse/CASSANDRA-13971
> Project: Cassandra
> Issue Type: Improvement
> Components: Streaming and Messaging
> Reporter: Stefan Podkowinski
> Assignee: Stefan Podkowinski
> Fix For: 4.x
>
>
> We've been adding security features during the last years to enable users to
> secure their clusters, if they are willing to use them and do so correctly.
> Some features are powerful and easy to work with, such as role based
> authorization. Other features that require to manage a local keystore are
> rather painful to deal with. Think about setting up SSL..
> To be fair, keystore related issues and certificate handling hasn't been
> invented by us. We're just following Java standards there. But that doesn't
> mean that we absolutely have to, if there are better options. I'd like to
> give it a shoot and find out if we can automate certificate/key handling
> (PKI) by using external APIs. In this case, the implementation will be based
> on [Vault|https://vaultproject.io]. But certificate management services
> offered by cloud providers may also be able to handle the use-case and I
> intend to create a generic, pluggable API for that.
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