> On Jan. 5, 2015, 8:46 p.m., Christopher Tubbs wrote: > > server/base/src/main/java/org/apache/accumulo/server/security/handler/KerberosAuthenticator.java, > > lines 68-75 > > <https://reviews.apache.org/r/29386/diff/9/?file=804864#file804864line68> > > > > This makes the assumption that this method is only called on the > > current user. That's not true. It also supports the public API > > SecurityOperations.authenticateUser() > > Josh Elser wrote: > Oh, hrm. That might be problematic? I have to look at where the token > comes from. We need to differentiate between the token for the user asking, > and the token for the user being asked about. The API ensures that we can at > least have both of those tokens, which gives us what we need. > > I think we can proxy the second token on top of the current token to > validate (the user being asked about on top of the user which is doing the > asking). If that succeeds, the user being asked about should be able to > access the system on their own and everything else should be transparent. > > I need to write some tests to ensure multi-user permissions operate > expectedly (I'm working on MAC being able to use a KDC now).
So, the reason this struck me as odd is that I don't know how this is actually possible :) I can't ask if another Kerberos user's credentials are valid because I shouldn't have them (and I don't *think* it's possible to have multiple active credentials passed over the wire). I think I just need to make a check that the caller's credentials are the same as the credentials we're being asked to check. Or, I'm not sure if this is impossible or I just don't know how to do it. - Josh ----------------------------------------------------------- This is an automatically generated e-mail. To reply, visit: https://reviews.apache.org/r/29386/#review66719 ----------------------------------------------------------- On Jan. 7, 2015, 9:37 p.m., Josh Elser wrote: > > ----------------------------------------------------------- > This is an automatically generated e-mail. To reply, visit: > https://reviews.apache.org/r/29386/ > ----------------------------------------------------------- > > (Updated Jan. 7, 2015, 9:37 p.m.) > > > Review request for accumulo. > > > Bugs: ACCUMULO-2815 > https://issues.apache.org/jira/browse/ACCUMULO-2815 > > > Repository: accumulo > > > Description > ------- > > ACCUMULO-2815 Initial support for Kerberos client authentication. > > Leverage SASL transport provided by Thrift which can speak GSSAPI, which > Kerberos implements. Introduced... > > * An Accumulo KerberosToken which is an AuthenticationToken to validate users. > * Custom thrift processor and invocation handler to ensure server RPCs have a > valid KRB identity and Accumulo authentication. > * A KerberosAuthenticator which extends ZKAuthenticator to support Kerberos > identities seamlessly. > * New ClientConf variables to use SASL transport and pass Kerberos server > principal > * Updated ClientOpts and Shell opts to transparently use a KerberosToken when > SASL is enabled (no extra client work). > > I believe this is the "bare minimum" for Kerberos support. They are also > grossly lacking in unit and integration tests. I believe that I might have > somehow broken the client address string in the server (I saw log messages > with client: null, but I'm not sure if it's due to these changes or not). A > necessary limitation in the Thrift server used is that, like the SSL > transport, the SASL transport cannot presently be used with the > TFramedTransport, which means none of the [half]async thrift servers will > function with this -- we're stuck with the TThreadPoolServer. > > Performed some contrived benchmarks on my laptop (while still using it > myself) to get at big-picture view of the performance impact against "normal" > operation and Kerberos alone. Each "run" was the duration to ingest 100M > records using continuous-ingest, timed with `time`, using 'real'. > > THsHaServer (our default), 6 runs: > > Avg: 10m7.273s (607.273s) > Min: 9m43.395s > Max: 10m52.715s > > TThreadPoolServer (no SASL), 5 runs: > > Avg: 11m16.254s (676.254s) > Min: 10m30.987s > Max: 12m24.192s > > TThreadPoolServer+SASL/GSSAPI (these changes), 6 runs: > > Avg: 13m17.187s (797.187s) > Min: 10m52.997s > Max: 16m0.975s > > The general takeway is that there's about 15% performance degredation in its > initial state which is in the realm of what I expected (~10%). > > > Diffs > ----- > > core/src/main/java/org/apache/accumulo/core/cli/ClientOpts.java f6ea934 > core/src/main/java/org/apache/accumulo/core/client/ClientConfiguration.java > 6fe61a5 > core/src/main/java/org/apache/accumulo/core/client/impl/ClientContext.java > e75bec6 > core/src/main/java/org/apache/accumulo/core/client/impl/ConnectorImpl.java > f481cc3 > core/src/main/java/org/apache/accumulo/core/client/impl/MasterClient.java > a9ad8a1 > > core/src/main/java/org/apache/accumulo/core/client/impl/ThriftTransportKey.java > 6dc846f > > core/src/main/java/org/apache/accumulo/core/client/impl/ThriftTransportPool.java > 5da803b > > core/src/main/java/org/apache/accumulo/core/client/security/tokens/KerberosToken.java > PRE-CREATION > core/src/main/java/org/apache/accumulo/core/conf/Property.java e054a5f > core/src/main/java/org/apache/accumulo/core/rpc/FilterTransport.java > PRE-CREATION > core/src/main/java/org/apache/accumulo/core/rpc/SaslConnectionParams.java > PRE-CREATION > core/src/main/java/org/apache/accumulo/core/rpc/TTimeoutTransport.java > 6eace77 > core/src/main/java/org/apache/accumulo/core/rpc/ThriftUtil.java 09bd6c4 > core/src/main/java/org/apache/accumulo/core/rpc/UGIAssumingTransport.java > PRE-CREATION > > core/src/main/java/org/apache/accumulo/core/rpc/UGIAssumingTransportFactory.java > PRE-CREATION > core/src/main/java/org/apache/accumulo/core/security/Credentials.java > 525a958 > core/src/test/java/org/apache/accumulo/core/cli/TestClientOpts.java ff49bc0 > > core/src/test/java/org/apache/accumulo/core/client/ClientConfigurationTest.java > PRE-CREATION > > core/src/test/java/org/apache/accumulo/core/client/impl/ThriftTransportKeyTest.java > PRE-CREATION > > core/src/test/java/org/apache/accumulo/core/conf/ClientConfigurationTest.java > 40be70f > > core/src/test/java/org/apache/accumulo/core/rpc/SaslConnectionParamsTest.java > PRE-CREATION > > minicluster/src/main/java/org/apache/accumulo/minicluster/impl/MiniAccumuloClusterImpl.java > 27d6b19 > > minicluster/src/main/java/org/apache/accumulo/minicluster/impl/MiniAccumuloConfigImpl.java > 26c23ed > pom.xml ae188a0 > proxy/src/main/java/org/apache/accumulo/proxy/Proxy.java 4b048eb > > server/base/src/main/java/org/apache/accumulo/server/AccumuloServerContext.java > 09ae4f4 > server/base/src/main/java/org/apache/accumulo/server/init/Initialize.java > 046cfb5 > > server/base/src/main/java/org/apache/accumulo/server/rpc/TCredentialsUpdatingInvocationHandler.java > PRE-CREATION > > server/base/src/main/java/org/apache/accumulo/server/rpc/TCredentialsUpdatingWrapper.java > PRE-CREATION > server/base/src/main/java/org/apache/accumulo/server/rpc/TServerUtils.java > 641c0bf > > server/base/src/main/java/org/apache/accumulo/server/rpc/ThriftServerType.java > PRE-CREATION > > server/base/src/main/java/org/apache/accumulo/server/security/SecurityOperation.java > 5e81018 > > server/base/src/main/java/org/apache/accumulo/server/security/SecurityUtil.java > 29e4939 > > server/base/src/main/java/org/apache/accumulo/server/security/SystemCredentials.java > a59d57c > > server/base/src/main/java/org/apache/accumulo/server/security/handler/KerberosAuthenticator.java > PRE-CREATION > > server/base/src/main/java/org/apache/accumulo/server/thrift/UGIAssumingProcessor.java > PRE-CREATION > server/base/src/main/java/org/apache/accumulo/server/util/Admin.java > ae36f1f > server/base/src/main/java/org/apache/accumulo/server/util/ZooZap.java > 7fdbf13 > > server/base/src/test/java/org/apache/accumulo/server/AccumuloServerContextTest.java > PRE-CREATION > > server/base/src/test/java/org/apache/accumulo/server/rpc/TCredentialsUpdatingInvocationHandlerTest.java > PRE-CREATION > > server/base/src/test/java/org/apache/accumulo/server/rpc/ThriftServerTypeTest.java > PRE-CREATION > > server/base/src/test/java/org/apache/accumulo/server/security/SystemCredentialsTest.java > 4202a7e > server/gc/src/main/java/org/apache/accumulo/gc/SimpleGarbageCollector.java > 93a9a49 > > server/gc/src/test/java/org/apache/accumulo/gc/GarbageCollectWriteAheadLogsTest.java > f98721f > > server/gc/src/test/java/org/apache/accumulo/gc/SimpleGarbageCollectorTest.java > 99558b8 > > server/gc/src/test/java/org/apache/accumulo/gc/replication/CloseWriteAheadLogReferencesTest.java > cad1e01 > server/master/src/main/java/org/apache/accumulo/master/Master.java 12195fa > server/tracer/src/main/java/org/apache/accumulo/tracer/TraceServer.java > 7e33300 > server/tserver/src/main/java/org/apache/accumulo/tserver/TabletServer.java > d5c1d2f > shell/src/main/java/org/apache/accumulo/shell/Shell.java 58308ff > shell/src/main/java/org/apache/accumulo/shell/ShellOptionsJC.java 8167ef8 > shell/src/test/java/org/apache/accumulo/shell/ShellConfigTest.java 0e72c8c > shell/src/test/java/org/apache/accumulo/shell/ShellOptionsJCTest.java > PRE-CREATION > test/pom.xml b0a926f > test/src/main/java/org/apache/accumulo/test/functional/ZombieTServer.java > eb84533 > > test/src/main/java/org/apache/accumulo/test/performance/thrift/NullTserver.java > 2ebc2e3 > test/src/test/java/org/apache/accumulo/harness/AccumuloClusterIT.java > 8f7e1b7 > test/src/test/java/org/apache/accumulo/harness/MiniClusterHarness.java > abdb627 > test/src/test/java/org/apache/accumulo/harness/SharedMiniClusterIT.java > 2380f66 > test/src/test/java/org/apache/accumulo/harness/TestingKdc.java PRE-CREATION > > test/src/test/java/org/apache/accumulo/harness/conf/AccumuloMiniClusterConfiguration.java > 11b7530 > > test/src/test/java/org/apache/accumulo/server/security/SystemCredentialsIT.java > fb71f5f > test/src/test/java/org/apache/accumulo/test/ArbitraryTablePropertiesIT.java > aa5c164 > test/src/test/java/org/apache/accumulo/test/CleanWalIT.java 1fcd5a4 > > test/src/test/java/org/apache/accumulo/test/functional/BatchScanSplitIT.java > 221889b > test/src/test/java/org/apache/accumulo/test/functional/KerberosIT.java > PRE-CREATION > test/src/test/java/org/apache/accumulo/test/security/KerberosTokenTest.java > PRE-CREATION > test/src/test/resources/log4j.properties cb35840 > > Diff: https://reviews.apache.org/r/29386/diff/ > > > Testing > ------- > > Ensure existing unit tests still function. Accumulo is functional and ran > continuous ingest multiple times using a client with only a Kerberos identity > (no user/password provided). Used MIT Kerberos with Apache Hadoop 2.6.0 and > Apache ZooKeeper 3.4.5. > > > Thanks, > > Josh Elser > >
