I honestly tried this - as this was the first thing that I found in accumulo 
examples; I don't know - maybe the problem with this approach is still on our 
side and requires additional investigation, however a state of ecstasy [that I 
received when everything started to work] tells me not to chase extra honours 
in solving brainteasers [with your help of course] :-)

By the way, what do you think is the approximate expected date for 1.7.1 GA 
release (for Kerberos tickets renewal)?


-----Original Message-----
From: Josh Elser [mailto:josh.el...@gmail.com]
Sent: 27 January 2016 21:25
To: user@accumulo.apache.org
Subject: Re: Accumulo and Kerberos

The directory being on the classpath is all that you need. Directories will be 
made available, you shouldn't be listing the files explicitly.

The example accumulo-site.xml files do this for you:

   <property>
     <name>general.classpaths</name>
     <value>
...elided...
       <!-- Common Hadoop requirements -->
       $HADOOP_CONF_DIR,
       <!-- End Common Hadoop requirements --> ...elided...
     </value>
     <description>Classpaths that accumulo checks for updates and class 
files.</description>
   </property>

This is all you should need to get the necessary Hadoop configuration files 
made available to the Accumulo services.

roman.drap...@baesystems.com wrote:
> Well I used general.classpaths and absolute paths to individual files - 
> "accumulo classpath" picked them up. When I tried just specifying a folder 
> "/etc/hadoop/conf/" or "/etc/hadoop/conf/*.xml" - for some reason it did not 
> see the files. Nothing from the above helped me. Then I found a script by 
> Squirrel for MapR where they copied files to accumulo conf folder - tried 
> symlinks and it magically started to work.
>
> -----Original Message-----
> From: Josh Elser [mailto:josh.el...@gmail.com]
> Sent: 27 January 2016 16:17
> To: user@accumulo.apache.org
> Subject: Re: Accumulo and Kerberos
>
> I don't understand what you mean by "Classpath did not help".
>
> The way this is designed to work is that the HADOOP_CONF_DIR you set in 
> accumulo-env.sh gets added to the classpath. This should prevent the need for 
> you to copy/link any Hadoop configuration files into the Accumulo 
> installation (making upgrades less error prone).
>
> Glad to hear you got it working.
>
> roman.drap...@baesystems.com wrote:
>> Hi Josh,
>>
>> Thanks a lot for your guess. Classpath did not help, however symlinks from 
>> Hadoop conf directory to Accumulo conf directory worked perfectly.
>>
>> Regards,
>> Roman
>>
>> -----Original Message-----
>> From: Josh Elser [mailto:josh.el...@gmail.com]
>> Sent: 26 January 2016 23:26
>> To: user@accumulo.apache.org
>> Subject: Re: Accumulo and Kerberos
>>
>> Ok, so we can confirm that the TabletServer logged in. This is what your 
>> .out file is telling us.
>>
>> This is looking like you don't have your software configured correctly.
>> As this error message is trying to tell you, HDFS supports three types of 
>> authentication tokens: "simple", "token", and "kerberos". "Simple" is what 
>> is used by default (without Kerberos). "Kerberos" refers to clients with a 
>> Kerberos ticket. Ignore "token" for now as it's irrelevant.
>>
>> We can tell from the stack trace that the TabletServer made an RPC to a 
>> datanode. For some reason, this RPC was requesting "simple"
>> authentication and not "kerberos". The datanode is telling you that it's not 
>> allowed to accept your "simple" token and that you need to use "kerberos" 
>> (or "token").
>>
>> If I had to venture a guess, it would be that you have Accumulo configured 
>> to use the wrong Hadoop configuration files, notably core-site.xml and 
>> hdfs-site.xml.
>>
>> Try the command `accumulo classpath` command and verify that the Hadoop 
>> configuration files included there are the correct ones (the ones that are 
>> configured for Kerberos).
>>
>> - Josh
>>
>> roman.drap...@baesystems.com wrote:
>>> Hi Josh,
>>>
>>> Tried on the tserver - does not really give more information. I am trying 
>>> just bin/start-here.sh on the slave (master is successfully running).
>>>
>>> This is what I can see in ".out" log
>>>
>>> 2016-01-26 22:29:18,233 [security.SecurityUtil] INFO : Attempting to
>>> login with keytab as accumulo/<host>@<realm>
>>> 2016-01-26 22:29:18,371 [util.NativeCodeLoader] WARN : Unable to
>>> load native-hadoop library for your platform... using builtin-java
>>> classes where applicable
>>> 2016-01-26 22:29:18,685 [security.SecurityUtil] INFO : Succesfully
>>> logged in as user accumulo/<host>@<realm>
>>>
>>> This is ".log" log - it looks like something with Zookeper Utils..
>>>
>>> 2016-01-26 22:29:19,963 [fs.VolumeManagerImpl] WARN :
>>> dfs.datanode.synconclose set to false in hdfs-site.xml: data loss is
>>> possible on hard system reset or power loss
>>> 2016-01-26 22:29:19,966 [conf.Property] DEBUG: Loaded class :
>>> org.apache.accumulo.server.fs.PerTableVolumeChooser
>>> 2016-01-26 22:29:20,050 [zookeeper.ZooUtil] ERROR: Problem reading
>>> instance id out of hdfs at hdfs://<host>:8020/accumulo/instance_id
>>> org.apache.hadoop.security.AccessControlException: SIMPLE authentication is 
>>> not enabled.  Available:[TOKEN, KERBEROS]
>>>            at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native 
>>> Method)
>>>            at 
>>> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
>>>            at 
>>> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
>>>            at 
>>> java.lang.reflect.Constructor.newInstance(Constructor.java:526)
>>>            at 
>>> org.apache.hadoop.ipc.RemoteException.instantiateException(RemoteException.java:106)
>>>            at 
>>> org.apache.hadoop.ipc.RemoteException.unwrapRemoteException(RemoteException.java:73)
>>>            at 
>>> org.apache.hadoop.hdfs.DFSClient.listPaths(DFSClient.java:1965)
>>>            at 
>>> org.apache.hadoop.hdfs.DFSClient.listPaths(DFSClient.java:1946)
>>>            at 
>>> org.apache.hadoop.hdfs.DistributedFileSystem.listStatusInternal(DistributedFileSystem.java:693)
>>>            at 
>>> org.apache.hadoop.hdfs.DistributedFileSystem.access$600(DistributedFileSystem.java:105)
>>>            at 
>>> org.apache.hadoop.hdfs.DistributedFileSystem$15.doCall(DistributedFileSystem.java:755)
>>>            at 
>>> org.apache.hadoop.hdfs.DistributedFileSystem$15.doCall(DistributedFileSystem.java:751)
>>>            at 
>>> org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
>>>            at 
>>> org.apache.hadoop.hdfs.DistributedFileSystem.listStatus(DistributedFileSystem.java:751)
>>>            at 
>>> org.apache.accumulo.core.zookeeper.ZooUtil.getInstanceIDFromHdfs(ZooUtil.java:59)
>>>            at 
>>> org.apache.accumulo.core.zookeeper.ZooUtil.getInstanceIDFromHdfs(ZooUtil.java:51)
>>>            at 
>>> org.apache.accumulo.server.client.HdfsZooInstance._getInstanceID(HdfsZooInstance.java:137)
>>>            at 
>>> org.apache.accumulo.server.client.HdfsZooInstance.getInstanceID(HdfsZooInstance.java:121)
>>>            at 
>>> org.apache.accumulo.server.conf.ServerConfigurationFactory.<init>(ServerConfigurationFactory.java:113)
>>>            at 
>>> org.apache.accumulo.tserver.TabletServer.main(TabletServer.java:2952)
>>>            at 
>>> org.apache.accumulo.tserver.TServerExecutable.execute(TServerExecutable.java:33)
>>>            at org.apache.accumulo.start.Main$1.run(Main.java:93)
>>>            at java.lang.Thread.run(Thread.java:745)
>>> Caused by: 
>>> org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.security.AccessControlException):
>>>  SIMPLE authentication is not enabled.  Available:[TOKEN, KERBEROS]
>>>            at org.apache.hadoop.ipc.Client.call(Client.java:1468)
>>>            at org.apache.hadoop.ipc.Client.call(Client.java:1399)
>>>            at 
>>> org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:232)
>>>            at com.sun.proxy.$Proxy22.getListing(Unknown Source)
>>>            at 
>>> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getListing(ClientNamenodeProtocolTranslatorPB.java:554)
>>>            at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>>            at 
>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>>>            at 
>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>>>            at java.lang.reflect.Method.invoke(Method.java:606)
>>>            at 
>>> org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:187)
>>>            at 
>>> org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
>>>            at com.sun.proxy.$Proxy23.getListing(Unknown Source)
>>>            at 
>>> org.apache.hadoop.hdfs.DFSClient.listPaths(DFSClient.java:1963)
>>>            ... 16 more
>>> 2016-01-26 22:29:20,053 [tserver.TabletServer] ERROR: Uncaught
>>> exception in TabletServer.main, exiting
>>> java.lang.RuntimeException: Can't tell if Accumulo is initialized; can't 
>>> read instance id at hdfs://<host>:8020/accumulo/instance_id
>>>            at 
>>> org.apache.accumulo.core.zookeeper.ZooUtil.getInstanceIDFromHdfs(ZooUtil.java:76)
>>>            at 
>>> org.apache.accumulo.core.zookeeper.ZooUtil.getInstanceIDFromHdfs(ZooUtil.java:51)
>>>            at 
>>> org.apache.accumulo.server.client.HdfsZooInstance._getInstanceID(HdfsZooInstance.java:137)
>>>            at 
>>> org.apache.accumulo.server.client.HdfsZooInstance.getInstanceID(HdfsZooInstance.java:121)
>>>            at 
>>> org.apache.accumulo.server.conf.ServerConfigurationFactory.<init>(ServerConfigurationFactory.java:113)
>>>            at 
>>> org.apache.accumulo.tserver.TabletServer.main(TabletServer.java:2952)
>>>            at 
>>> org.apache.accumulo.tserver.TServerExecutable.execute(TServerExecutable.java:33)
>>>            at org.apache.accumulo.start.Main$1.run(Main.java:93)
>>>            at java.lang.Thread.run(Thread.java:745)
>>> Caused by: org.apache.hadoop.security.AccessControlException: SIMPLE 
>>> authentication is not enabled.  Available:[TOKEN, KERBEROS]
>>>            at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native 
>>> Method)
>>>            at 
>>> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
>>>            at 
>>> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
>>>            at 
>>> java.lang.reflect.Constructor.newInstance(Constructor.java:526)
>>>            at 
>>> org.apache.hadoop.ipc.RemoteException.instantiateException(RemoteException.java:106)
>>>            at 
>>> org.apache.hadoop.ipc.RemoteException.unwrapRemoteException(RemoteException.java:73)
>>>            at 
>>> org.apache.hadoop.hdfs.DFSClient.listPaths(DFSClient.java:1965)
>>>            at 
>>> org.apache.hadoop.hdfs.DFSClient.listPaths(DFSClient.java:1946)
>>>            at 
>>> org.apache.hadoop.hdfs.DistributedFileSystem.listStatusInternal(DistributedFileSystem.java:693)
>>>            at 
>>> org.apache.hadoop.hdfs.DistributedFileSystem.access$600(DistributedFileSystem.java:105)
>>>            at 
>>> org.apache.hadoop.hdfs.DistributedFileSystem$15.doCall(DistributedFileSystem.java:755)
>>>            at 
>>> org.apache.hadoop.hdfs.DistributedFileSystem$15.doCall(DistributedFileSystem.java:751)
>>>            at 
>>> org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
>>>            at 
>>> org.apache.hadoop.hdfs.DistributedFileSystem.listStatus(DistributedFileSystem.java:751)
>>>            at 
>>> org.apache.accumulo.core.zookeeper.ZooUtil.getInstanceIDFromHdfs(ZooUtil.java:59)
>>>            ... 8 more
>>> Caused by: 
>>> org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.security.AccessControlException):
>>>  SIMPLE authentication is not enabled.  Available:[TOKEN, KERBEROS]
>>>            at org.apache.hadoop.ipc.Client.call(Client.java:1468)
>>>            at org.apache.hadoop.ipc.Client.call(Client.java:1399)
>>>            at 
>>> org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:232)
>>>            at com.sun.proxy.$Proxy22.getListing(Unknown Source)
>>>            at 
>>> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getListing(ClientNamenodeProtocolTranslatorPB.java:554)
>>>            at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>>            at 
>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>>>            at 
>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>>>            at java.lang.reflect.Method.invoke(Method.java:606)
>>>            at 
>>> org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:187)
>>>            at 
>>> org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
>>>            at com.sun.proxy.$Proxy23.getListing(Unknown Source)
>>>            at 
>>> org.apache.hadoop.hdfs.DFSClient.listPaths(DFSClient.java:1963)
>>>            ... 16 more
>>>
>>> -----Original Message-----
>>> From: Josh Elser [mailto:josh.el...@gmail.com]
>>> Sent: 26 January 2016 21:39
>>> To: user@accumulo.apache.org
>>> Subject: Re: Accumulo and Kerberos
>>>
>>> Your confusion is stemming from what stop-all.sh is actually doing 
>>> (although, I still have no idea how stopping processes has any bearing on 
>>> how they start :smile:). Notably, this script will invoke `accumulo admin 
>>> stopAll` to trigger a graceful shutdown before stopping the services hard 
>>> (`kill`).
>>>
>>> So, as you would run these scripts as the 'accumulo' user without Kerberos, 
>>> you should also be logged in as the 'accumulo' Kerberos user when starting 
>>> them. This might be missing from the docs. Please do suggest where some 
>>> documentation should be added to cover this.
>>>
>>> If it doesn't go without saying, this is a separate issue from your 
>>> services not logging in correctly. Can you share logs? Try enabling 
>>> -Dsun.security.kr5b.debug=true in the appropriate environment variable (for 
>>> the service you want to turn it on for) in accumulo-env.sh and then start 
>>> the services again (hopefully, sharing that too if the problem isn't 
>>> obvious).
>>>
>>> roman.drap...@baesystems.com wrote:
>>>> I want to believe in this, but what I see contradicts this statement..
>>>>
>>>> I do bin/stop-all.sh on master.
>>>>
>>>> If I have a ticket cache for hdfs user, I don't see any errors.
>>>> If I don't a have ticket cache for hdfs user, I see these errors.
>>>>
>>>> I can see that all slaves and master successfully logged in as accumulo 
>>>> user.
>>>>
>>>> However slaves are failing straight away due to the error I posted in the 
>>>> previous email. I also see this error when I stop the master and I don't' 
>>>> have ticket cache for hdfs user, however I don't see it if I have ticket 
>>>> cache (as per above)... It's kind of a reflection of the previous problem 
>>>> with vfs.
>>>>
>>>>
>>>>
>>>>
>>>> -----Original Message-----
>>>> From: Josh Elser [mailto:josh.el...@gmail.com]
>>>> Sent: 26 January 2016 21:08
>>>> To: user@accumulo.apache.org
>>>> Subject: Re: Accumulo and Kerberos
>>>>
>>>> Ok, let me repeat: running a `kinit` in your local shell has *no
>>>> bearing* on what Accumulo is doing. This is fundamentally not how it 
>>>> works. There are libraries in the JDK which perform the login with the KDC 
>>>> using the keytab you provide in accumulo-site.xml. Accumulo is not using 
>>>> the ticket cache which your `kinit` creates.
>>>>
>>>> </rant>
>>>>
>>>> You should see a message in the log stating that the Kerberos login 
>>>> happened (or didn't). The server should exit if it fails to log in (but I 
>>>> don't know if I've actively tested that). Do you see this message?
>>>> Does it say you successfully logged in (and the principal you logged in 
>>>> as)?
>>>>
>>>> roman.drap...@baesystems.com wrote:
>>>>> Ok, there is some progress. So these issues were definitely related to 
>>>>> VFS classloader - now works both on the client and master - so I guess a 
>>>>> bug is found.
>>>>>
>>>>> And it looks like there is a very similar issue related to
>>>>> instance_id
>>>>>
>>>>> On the slaves (does not matter whether I do kinit hdfs or not) I always 
>>>>> receive when I start the node:
>>>>>
>>>>>              2016-01-26 20:36:41,744 [tserver.TabletServer] ERROR: 
>>>>> Uncaught exception in TabletServer.main, exiting
>>>>>              java.lang.RuntimeException: Can't tell if Accumulo is
>>>>> initialized; can't read instance id at
>>>>> hdfs://cr-platform-qa23-01.cyberreveal.local:8020/accumulo/instanc
>>>>> e
>>>>> _
>>>>> i
>>>>> d
>>>>>
>>>>> On the master I can see the same issue when I do bin/stop-all.sh without 
>>>>> kinit hdfs and it disappears if I have a hdfs ticket.
>>>>>
>>>>> I tried both: hadoop fs -chown -R accumulo:hdfs /accumulo and
>>>>> hadoop fs -chown -R accumulo:accumulo /accumulo - same behavior
>>>>>
>>>>> Any thoughts please?
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> -----Original Message-----
>>>>> From: Josh Elser [mailto:josh.el...@gmail.com]
>>>>> Sent: 26 January 2016 20:08
>>>>> To: user@accumulo.apache.org
>>>>> Subject: Re: Accumulo and Kerberos
>>>>>
>>>>> The normal classloader (on the local filesystem) which is configured out 
>>>>> of the box.
>>>>>
>>>>> roman.drap...@baesystems.com wrote:
>>>>>> Hi Josh,
>>>>>>
>>>>>> I can confirm that issue on the master is related to VFS classloader!  
>>>>>> Commented out classloader and now it works without kinit. So it seems it 
>>>>>> tries loading classes before Kerberos authentication happened. What 
>>>>>> classloader should I use instead?
>>>>>>
>>>>>> Regards,
>>>>>> Roman
>>>>>>
>>>>>> -----Original Message-----
>>>>>> From: roman.drap...@baesystems.com
>>>>>> [mailto:roman.drap...@baesystems.com]
>>>>>> Sent: 26 January 2016 19:43
>>>>>> To: user@accumulo.apache.org
>>>>>> Subject: RE: Accumulo and Kerberos
>>>>>>
>>>>>> Hi Josh,
>>>>>>
>>>>>> Two quick questions.
>>>>>>
>>>>>> 1) What should I use instead of HDFS classloader? All examples seem to 
>>>>>> be from hdfs.
>>>>>> 2) Whan 1.7.1 release is scheduled for (approx.) ?
>>>>>>
>>>>>> Regards,
>>>>>> Roman
>>>>>>
>>>>>> -----Original Message-----
>>>>>> From: Josh Elser [mailto:josh.el...@gmail.com]
>>>>>> Sent: 26 January 2016 19:01
>>>>>> To: user@accumulo.apache.org
>>>>>> Subject: Re: Accumulo and Kerberos
>>>>>>
>>>>>> I would strongly recommend that you do not use the HDFS classloader. It 
>>>>>> is known to be very broken in what you download as 1.7.0. There are a 
>>>>>> number of JIRA issues about this which stem from a lack of a released 
>>>>>> commons-vfs2-2.1.
>>>>>>
>>>>>> That being said, I have not done anything with running Accumulo out of 
>>>>>> HDFS with Kerberos enabled. AFAIK, you're in untraveled waters.
>>>>>>
>>>>>> re: the renewal bug: When the ticket expires, the Accumulo
>>>>>> service will die. Your options are to deploy a watchdog process
>>>>>> that would restart the service, download the fix from the JIRA
>>>>>> case and rebuild Accumulo yourself, or build 1.7.1-SNAPSHOT from
>>>>>> our codebase. I would recommend using 1.7.1-SNAPSHOT as it should
>>>>>> be the least painful (1.7.1-SNAPSHOT now is likely to not change
>>>>>> significantly from what is ultimately released as 1.7.1)
>>>>>>
>>>>>> roman.drap...@baesystems.com wrote:
>>>>>>> Hi Josh,
>>>>>>>
>>>>>>> Yes, will do. Just in the meantime - I can see a different issue on 
>>>>>>> slave nodes. If I try to start in isolation (bin/start-here.sh) with or 
>>>>>>> without doing kinit I always see the error below.
>>>>>>>
>>>>>>> 2016-01-26 18:31:13,873 [start.Main] ERROR: Problem initializing
>>>>>>> the class loader java.lang.reflect.InvocationTargetException
>>>>>>>                at sun.reflect.NativeMethodAccessorImpl.invoke0(Native 
>>>>>>> Method)
>>>>>>>                at 
>>>>>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>>>>>>>                at 
>>>>>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>>>>>>>                at java.lang.reflect.Method.invoke(Method.java:606)
>>>>>>>                at 
>>>>>>> org.apache.accumulo.start.Main.getClassLoader(Main.java:68)
>>>>>>>                at
>>>>>>> org.apache.accumulo.start.Main.main(Main.java:52)
>>>>>>> Caused by: org.apache.commons.vfs2.FileSystemException: Could not 
>>>>>>> determine the type of file "hdfs://<hostname>/platform/lib/.*.jar".
>>>>>>>                at 
>>>>>>> org.apache.commons.vfs2.provider.AbstractFileObject.attach(AbstractFileObject.java:1522)
>>>>>>>                at 
>>>>>>> org.apache.commons.vfs2.provider.AbstractFileObject.getType(AbstractFileObject.java:489)
>>>>>>>                at 
>>>>>>> org.apache.accumulo.start.classloader.vfs.AccumuloVFSClassLoader.resolve(AccumuloVFSClassLoader.java:143)
>>>>>>>                at 
>>>>>>> org.apache.accumulo.start.classloader.vfs.AccumuloVFSClassLoader.resolve(AccumuloVFSClassLoader.java:121)
>>>>>>>                at 
>>>>>>> org.apache.accumulo.start.classloader.vfs.AccumuloVFSClassLoader.getClassLoader(AccumuloVFSClassLoader.java:211)
>>>>>>>                ... 6 more
>>>>>>> Caused by: org.apache.hadoop.security.AccessControlException:
>>>>>>> SIMPLE authentication is not enabled.  Available:[TOKEN,
>>>>>>> KERBEROS]
>>>>>>>
>>>>>>> I guess it might be different to what I observe on the master node. If 
>>>>>>> I don't get ticket explicitly, I get the error mentioned in the 
>>>>>>> previous email. However if do (and it does not matter for what user I 
>>>>>>> have a ticket now - whether it's accumulo, hdfs or hive) - it works. So 
>>>>>>> I started to think, maybe the problem related to some action (for 
>>>>>>> example to vfs as per above) that tries to access HDFS before doing a 
>>>>>>> proper authentication with Kerberos? Any ideas?
>>>>>>>
>>>>>>> Also, if we go live with 1.7.0 - what approach would you recommend for 
>>>>>>> renewing tickets? Does it require stopping and starting the cluster?
>>>>>>>
>>>>>>> Regards,
>>>>>>> Roman
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> -----Original Message-----
>>>>>>> From: Josh Elser [mailto:josh.el...@gmail.com]
>>>>>>> Sent: 26 January 2016 18:10
>>>>>>> To: user@accumulo.apache.org
>>>>>>> Subject: Re: Accumulo and Kerberos
>>>>>>>
>>>>>>> Hi Roman,
>>>>>>>
>>>>>>> Accumulo services (TabletServer, Master, etc) all use a keytab to 
>>>>>>> automatically obtain a ticket from the KDC when they start up. You do 
>>>>>>> not need to do anything with kinit when starting Accumulo.
>>>>>>>
>>>>>>> One worry is ACCUMULO-4069[1] with all presently released versions 
>>>>>>> (most notably 1.7.0 which you are using). This is a bug in which 
>>>>>>> services did not automatically renew their ticket. We're working on a 
>>>>>>> 1.7.1, but it's not out yet.
>>>>>>>
>>>>>>> As for debugging your issue, take a look at the Kerberos section on 
>>>>>>> debugging in the user manual [2]. Take a very close look at the 
>>>>>>> principal the service is using to obtain the ticket and what the 
>>>>>>> principal is for your keytab. A good sanity check is to make sure you 
>>>>>>> can `kinit` in the shell using the keytab and the correct principal 
>>>>>>> (rule out the keytab being incorrect).
>>>>>>>
>>>>>>> If you still get stuck, collect the output specifying 
>>>>>>> -Dsun.security.krb5.debug=true in accumulo-env.sh (per the 
>>>>>>> instructions) and try enabling log4j DEBUG on 
>>>>>>> org.apache.hadoop.security.UserGroupInformation.
>>>>>>>
>>>>>>> - Josh
>>>>>>>
>>>>>>> [1] https://issues.apache.org/jira/browse/ACCUMULO-4069
>>>>>>> [2]
>>>>>>> http://accumulo.apache.org/1.7/accumulo_user_manual.html#_debugg
>>>>>>> i
>>>>>>> n
>>>>>>> g
>>>>>>>
>>>>>>> roman.drap...@baesystems.com wrote:
>>>>>>>> Hi there,
>>>>>>>>
>>>>>>>> Trying to setup Accumulo 1.7 on Kerberized cluster. Only
>>>>>>>> interested in master/tablets to be kerberized (not end-users).
>>>>>>>> Configured everything as per manual:
>>>>>>>>
>>>>>>>> 1)Created principals
>>>>>>>>
>>>>>>>> 2)Generated glob keytab
>>>>>>>>
>>>>>>>> 3)Modified accumulo-site.xml providing general.kerberos.keytab
>>>>>>>> and general.kerberos.principal
>>>>>>>>
>>>>>>>> If I start as accumulo user I get: Caused by: GSSException: No
>>>>>>>> valid credentials provided (Mechanism level: Failed to find any
>>>>>>>> Kerberos
>>>>>>>> tgt)
>>>>>>>>
>>>>>>>> However, if I give explicitly a token with kinit and keytab
>>>>>>>> generated above in the shell - it works as expected. To my
>>>>>>>> understanding Accumulo has to obtain tickets automatically? Or
>>>>>>>> the idea is to write a cron job and apply kinit to every tablet server 
>>>>>>>> per day?
>>>>>>>>
>>>>>>>> Regards,
>>>>>>>>
>>>>>>>> Roman
>>>>>>>>
>>>>>>>> Please consider the environment before printing this email.
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>>>>>>> Please consider the environment before printing this email. This 
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>>>>>> Please consider the environment before printing this email. This message 
>>>>>> should be regarded as confidential. If you have received this email in 
>>>>>> error please notify the sender and destroy it immediately. Statements of 
>>>>>> intent shall only become binding when confirmed in hard copy by an 
>>>>>> authorised signatory. The contents of this email may relate to dealings 
>>>>>> with other companies under the control of BAE Systems Applied 
>>>>>> Intelligence Limited, details of which can be found at 
>>>>>> http://www.baesystems.com/Businesses/index.htm.
>>>>>> Please consider the environment before printing this email. This message 
>>>>>> should be regarded as confidential. If you have received this email in 
>>>>>> error please notify the sender and destroy it immediately. Statements of 
>>>>>> intent shall only become binding when confirmed in hard copy by an 
>>>>>> authorised signatory. The contents of this email may relate to dealings 
>>>>>> with other companies under the control of BAE Systems Applied 
>>>>>> Intelligence Limited, details of which can be found at 
>>>>>> http://www.baesystems.com/Businesses/index.htm.
>>>>> Please consider the environment before printing this email. This message 
>>>>> should be regarded as confidential. If you have received this email in 
>>>>> error please notify the sender and destroy it immediately. Statements of 
>>>>> intent shall only become binding when confirmed in hard copy by an 
>>>>> authorised signatory. The contents of this email may relate to dealings 
>>>>> with other companies under the control of BAE Systems Applied 
>>>>> Intelligence Limited, details of which can be found at 
>>>>> http://www.baesystems.com/Businesses/index.htm.
>>>> Please consider the environment before printing this email. This message 
>>>> should be regarded as confidential. If you have received this email in 
>>>> error please notify the sender and destroy it immediately. Statements of 
>>>> intent shall only become binding when confirmed in hard copy by an 
>>>> authorised signatory. The contents of this email may relate to dealings 
>>>> with other companies under the control of BAE Systems Applied Intelligence 
>>>> Limited, details of which can be found at 
>>>> http://www.baesystems.com/Businesses/index.htm.
>>> Please consider the environment before printing this email. This message 
>>> should be regarded as confidential. If you have received this email in 
>>> error please notify the sender and destroy it immediately. Statements of 
>>> intent shall only become binding when confirmed in hard copy by an 
>>> authorised signatory. The contents of this email may relate to dealings 
>>> with other companies under the control of BAE Systems Applied Intelligence 
>>> Limited, details of which can be found at 
>>> http://www.baesystems.com/Businesses/index.htm.
>> Please consider the environment before printing this email. This message 
>> should be regarded as confidential. If you have received this email in error 
>> please notify the sender and destroy it immediately. Statements of intent 
>> shall only become binding when confirmed in hard copy by an authorised 
>> signatory. The contents of this email may relate to dealings with other 
>> companies under the control of BAE Systems Applied Intelligence Limited, 
>> details of which can be found at 
>> http://www.baesystems.com/Businesses/index.htm.
> Please consider the environment before printing this email. This message 
> should be regarded as confidential. If you have received this email in error 
> please notify the sender and destroy it immediately. Statements of intent 
> shall only become binding when confirmed in hard copy by an authorised 
> signatory. The contents of this email may relate to dealings with other 
> companies under the control of BAE Systems Applied Intelligence Limited, 
> details of which can be found at 
> http://www.baesystems.com/Businesses/index.htm.
Please consider the environment before printing this email. This message should 
be regarded as confidential. If you have received this email in error please 
notify the sender and destroy it immediately. Statements of intent shall only 
become binding when confirmed in hard copy by an authorised signatory. The 
contents of this email may relate to dealings with other companies under the 
control of BAE Systems Applied Intelligence Limited, details of which can be 
found at http://www.baesystems.com/Businesses/index.htm.

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