Thanks for the confirm and further inputs, Steve. >> the latter would dramatically reduce the cost of wire-encrypting IPC. Yes to optimize Hadoop IPC/RPC encryption is another opportunity Kerby can help with, it's possible because we may hook Chimera or AES-NI thing into the Kerberos layer by leveraging the Kerberos library. As it may be noted, HADOOP-12725 is on the going for this aspect. There may be good result and further update on this recently.
>> For now, I'd like to see basic steps -upgrading minkdc to krypto, see how it >> works. Yes, starting with this initial steps upgrading MiniKDC to use Kerby is the right thing we could do. After some interactions with Kerby project, we may have more ideas how to proceed on the followings. >> Long term, I'd like Hadoop 3 to be Kerby-ized This sounds great! With necessary support from the community like feedback and patch reviewing, we can speed up the related work. Regards, Kai -----Original Message----- From: Steve Loughran [mailto:ste...@hortonworks.com] Sent: Monday, February 22, 2016 6:51 PM To: common-dev@hadoop.apache.org Subject: Re: Introduce Apache Kerby to Hadoop I've discussed this offline with Kai, as part of the "let's fix kerberos" project. Not only is it a better Kerberos engine, we can do more diagnostics, get better algorithms and ultimately get better APIs for doing Kerberos and SASL —the latter would dramatically reduce the cost of wire-encrypting IPC. For now, I'd like to see basic steps -upgrading minkdc to krypto, see how it works. Long term, I'd like Hadoop 3 to be Kerby-ized > On 22 Feb 2016, at 06:41, Zheng, Kai <kai.zh...@intel.com> wrote: > > Hi folks, > > I'd like to mention Apache Kerby [1] here to the community and propose to > introduce the project to Hadoop, a sub project of Apache Directory project. > > Apache Kerby is a Kerberos centric project and aims to provide a first Java > Kerberos library that contains both client and server supports. The relevant > features include: > It supports full Kerberos encryption types aligned with both MIT KDC > and MS AD; Client APIs to allow to login via password, credential > cache, keytab file and etc.; Utilities for generate, operate and > inspect keytab and credential cache files; A simple KDC server that > borrows some ideas from Hadoop-MiniKDC and can be used in tests but > with minimal overhead in external dependencies; A brand new token mechanism > is provided, can be experimentally used, using it a JWT token can be used to > exchange a TGT or service ticket; Anonymous PKINIT support, can be > experientially used, as the first Java library that supports the Kerberos > major extension. > > The project stands alone and is ensured to only depend on JRE for easier > usage. It has made the first release (1.0.0-RC1) and 2nd release (RC2) is > upcoming. > > > As an initial step, this proposal suggests using Apache Kerby to upgrade the > existing codes related to ApacheDS for the Kerberos support. The advantageous: > > 1. The kerby-kerb library is all the need, which is purely in Java, > SLF4J is the only dependency, the whole is rather small; > > 2. There is a SimpleKDC in the library for test usage, which borrowed > the MiniKDC idea and implemented all the support existing in MiniKDC. > We had a POC that rewrote MiniKDC using Kerby SimpleKDC and it works > fine; > > 3. Full Kerberos encryption types (many of them are not available in > JRE but supported by major Kerberos vendors) and more functionalities > like credential cache support; > > 4. Perhaps the most concerned, Hadoop MiniKDC and etc. depend on the > old Kerberos implementation in Directory Server project, but the > implementation is stopped being maintained. Directory project has a > plan to replace the implementation using Kerby. MiniKDC can use Kerby > directly to simplify the deps; > > 5. Extensively tested with all kinds of unit tests, already being used > for some time (like PSU), even in production environment; > > 6. Actively developed, and can be fixed and released in time if necessary, > separately and independently from other components in Apache Directory > project. By actively developing Apache Kerby and now applying it to Hadoop, > our side wish to make the Kerberos deploying, troubleshooting and further > enhancement can be much easier and thereafter possible. > > > > Wish this is a good beginning, and eventually Apache Kerby can benefit other > projects in the ecosystem as well. > > > > This Kerberos related work is actually a long time effort led by Weihua Jiang > in Intel, and had been kindly encouraged by Andrew Purtell, Steve Loughran, > Gangumalla Uma, Andrew Wang and etc., thanks a lot for their great > discussions and inputs in the past. > > > > Your feedback is very welcome. Thanks in advance. > > > > [1] https://github.com/apache/directory-kerby > > > > Regards, > > Kai
