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From Shwetha GS <shwetha...@inmobi.com>
Subject Re: Falcon CLI throws exception when hadoop security enabled
Date Thu, 10 Jul 2014 14:49:05 GMT
The error is specific to Kerberos authentication, probably something related to setup. 

Venkatesh, can you check this?

Sent from my iPhone

> On Jul 10, 2014, at 7:36 PM, Claudia Nunez <cinunez@yahoo-inc.com.INVALID> wrote:
> 
> I¹m having the same problem. What do you mean it should be executed as end
> user? Why we don¹t see this error when using simple authentication?
> 
> Thanks
> 
> -Claudia
> 
>> On 7/10/14, 12:35 AM, "Shwetha GS" <shwetha.gs@inmobi.com> wrote:
>> 
>> cli command should be executed as end user
>> 
>> 
>> On Thu, Jul 10, 2014 at 10:51 AM, Venkat R <veramacha@yahoo.com.invalid>
>> wrote:
>> 
>>> correction -- after kinit (using falcon user principal), when I run the
>>> command, I get "server not found exception". Looks like somthign to do
>>> with
>>> Kerberos.
>>> 
>>> What kerberos principal should I use when calling CLI command? --
>>> end-user, HTTP or falcon user?
>>> 
>>> Thanks
>>> Venkat
>>> 
>>> 
>>> 
>>> org.apache.falcon.client.FalconCLIException: Could not authenticate,
>>> GSSException: No valid credentials provided (Mechanism level: Server not
>>> found in Kerberos database (7) - UNKNOWN_SERVER)
>>>        at
>>> org.apache.falcon.client.FalconClient.getToken(FalconClient.java:166)
>>>        at
>>> org.apache.falcon.client.FalconClient.<init>(FalconClient.java:136)
>>>        at org.apache.falcon.cli.FalconCLI.run(FalconCLI.java:169)
>>>        at org.apache.falcon.cli.FalconCLI.main(FalconCLI.java:125)
>>> Caused by:
>>> 
>>> org.apache.hadoop.security.authentication.client.AuthenticationException:
>>> GSSException: No valid credentials provided (Mechanism level: Server not
>>> found in Kerberos database (7) - UNKNOWN_SERVER)
>>>        at
>>> 
>>> org.apache.hadoop.security.authentication.client.KerberosAuthenticator.do
>>> SpnegoSequence(KerberosAuthenticator.java:306)
>>>        at
>>> 
>>> org.apache.hadoop.security.authentication.client.KerberosAuthenticator.au
>>> thenticate(KerberosAuthenticator.java:196)
>>>        at
>>> 
>>> org.apache.hadoop.security.authentication.client.AuthenticatedURL.openCon
>>> nection(AuthenticatedURL.java:232)
>>>        at
>>> org.apache.falcon.client.FalconClient.getToken(FalconClient.java:164)
>>>        ... 3 more
>>> Caused by: GSSException: No valid credentials provided (Mechanism level:
>>> Server not found in Kerberos database (7) - UNKNOWN_SERVER)
>>>        at
>>> sun.security.jgss.krb5.Krb5Context.initSecContext(Krb5Context.java:663)
>>>        at
>>> sun.security.jgss.GSSContextImpl.initSecContext(GSSContextImpl.java:230)
>>>        at
>>> sun.security.jgss.GSSContextImpl.initSecContext(GSSContextImpl.java:162)
>>>        at
>>> 
>>> org.apache.hadoop.security.authentication.client.KerberosAuthenticator$1.
>>> run(KerberosAuthenticator.java:285)
>>>        at
>>> 
>>> org.apache.hadoop.security.authentication.client.KerberosAuthenticator$1.
>>> run(KerberosAuthenticator.java:261)
>>>        at java.security.AccessController.doPrivileged(Native Method)
>>>        at javax.security.auth.Subject.doAs(Subject.java:396)
>>>        at
>>> 
>>> org.apache.hadoop.security.authentication.client.KerberosAuthenticator.do
>>> SpnegoSequence(KerberosAuthenticator.java:261)
>>>        ... 6 more
>>> Caused by: KrbException: Server not found in Kerberos database (7) -
>>> UNKNOWN_SERVER
>>>        at sun.security.krb5.KrbTgsRep.<init>(KrbTgsRep.java:64)
>>>        at sun.security.krb5.KrbTgsReq.getReply(KrbTgsReq.java:185)
>>>        at
>>> 
>>> sun.security.krb5.internal.CredentialsUtil.serviceCreds(CredentialsUtil.j
>>> ava:294)
>>>        at
>>> 
>>> sun.security.krb5.internal.CredentialsUtil.acquireServiceCreds(Credential
>>> sUtil.java:106)
>>>        at
>>> sun.security.krb5.Credentials.acquireServiceCreds(Credentials.java:557)
>>>        at
>>> sun.security.jgss.krb5.Krb5Context.initSecContext(Krb5Context.java:594)
>>>        ... 13 more
>>> Caused by: KrbException: Identifier doesn't match expected value (906)
>>>        at sun.security.krb5.internal.KDCRep.init(KDCRep.java:133)
>>>        at sun.security.krb5.internal.TGSRep.init(TGSRep.java:58)
>>>        at sun.security.krb5.internal.TGSRep.<init>(TGSRep.java:53)
>>>        at sun.security.krb5.KrbTgsRep.<init>(KrbTgsRep.java:46)
>>>        ... 18 more
>>> Error: Unable to initialize Falcon Client object
>>> 
>>> 
>>> On Wednesday, July 9, 2014 9:55 PM, Venkat R
>>> <veramacha@yahoo.com.INVALID>
>>> wrote:
>>> 
>>> 
>>> 
>>> Hi All,
>>> 
>>> Running
>>> bin/falcon admin -status
>>> throws the following GSSException.
>>> I have enabled kerberos for service and
>>> SPNEGO (disabled SSL and bin/falcon-start -port 15000).
>>> I'm able to access the falcon URL via Firefox, but not via CLI.
>>> is there something i'm missing any parameter while calling CLI?
>>> 
>>> appreciate any help.
>>> Thanks
>>> 
>>> ---- startup.properties ----
>>> 
>>> 
>>> *.falcon.authentication.type=kerberos
>>> ##### Service Configuration
>>> *.falcon.service.authentication.kerberos.principal=dm/_
>>> HOST@GRID.EXAMPLE.COM
>>> 
>>> 
>>> *.falcon.service.authentication.kerberos.keytab=/export/apps/hadoop/keyta
>>> bs/dm.keytab
>>> *.dfs.namenode.kerberos.principal=hdfs/_HOST@GRID.EXAMPLE.COM
>>> 
>>> ##### SPNEGO Configuration
>>> *.falcon.http.authentication.type=kerberos
>>> *.falcon.http.authentication.kerberos.principal=HTTP/_
>>> HOST@GRID.EXAMPLE.COM
>>> 
>>> 
>>> *.falcon.http.authentication.kerberos.keytab=/export/apps/hadoop/keytabs/
>>> dm.keytab
>>> *.falcon.http.authentication.token.validity=36000
>>> *.falcon.http.authentication.signature.secret=falcon
>>> *.falcon.http.authentication.simple.anonymous.allowed=true
>>> *.falcon.http.authentication.kerberos.name.rules=DEFAULT
>>> *.falcon.http.authentication.blacklisted.users=
>>> 
>>> ######### Authentication
>>> Properties #########
>>> falcon.enableTLS=false
>>> 
>>> 
>>> ---- Exception --------------
>>> 
>>> 
>>> FalconURL -> http://localhost:15000/
>>> Property: falcon.url = http://localhost:15000/
>>> org.apache.falcon.client.FalconCLIException: Could not authenticate,
>>> GSSException: No valid credentials provided (Mechanism level: Failed to
>>> find any
>>> Kerberos tgt)
>>>        at
>>> org.apache.falcon.client.FalconClient.getToken(FalconClient.java:166)
>>>        at
>>> org.apache.falcon.client.FalconClient.<init>(FalconClient.java:136)
>>>        at
>>> org.apache.falcon.cli.FalconCLI.run(FalconCLI.java:169)
>>>        at org.apache.falcon.cli.FalconCLI.main(FalconCLI.java:125)
>>> Caused by:
>>> 
>>> org.apache.hadoop.security.authentication.client.AuthenticationException:
>>> GSSException: No valid credentials provided (Mechanism level: Failed to
>>> find any Kerberos tgt)
>>>        at
>>> 
>>> org.apache.hadoop.security.authentication.client.KerberosAuthenticator.do
>>> SpnegoSequence(KerberosAuthenticator.java:306)
>>>        at
>>> 
>>> org.apache.hadoop.security.authentication.client.KerberosAuthenticator.au
>>> thenticate(KerberosAuthenticator.java:196)
>>>        at
>>> 
>>> 
>>> org.apache.hadoop.security.authentication.client.AuthenticatedURL.openCon
>>> nection(AuthenticatedURL.java:232)
>>>        at
>>> org.apache.falcon.client.FalconClient.getToken(FalconClient.java:164)
>>>        ... 3 more
>>> Caused by: GSSException: No valid credentials provided (Mechanism level:
>>> Failed to find any Kerberos tgt)
>>>        at
>>> 
>>> sun.security.jgss.krb5.Krb5InitCredential.getInstance(Krb5InitCredential.
>>> java:130)
>>>        at
>>> 
>>> sun.security.jgss.krb5.Krb5MechFactory.getCredentialElement(Krb5MechFacto
>>> ry.java:106)
>>>        at
>>> 
>>> sun.security.jgss.krb5.Krb5MechFactory.getMechanismContext(Krb5MechFactor
>>> y.java:172)
>>>        at
>>> 
>>> sun.security.jgss.GSSManagerImpl.getMechanismContext(GSSManagerImpl.java:
>>> 209)
>>>        at
>>> sun.security.jgss.GSSContextImpl.initSecContext(GSSContextImpl.java:195)
>>> 
>>>   at
>>> sun.security.jgss.GSSContextImpl.initSecContext(GSSContextImpl.java:162)
>>>        at
>>> 
>>> org.apache.hadoop.security.authentication.client.KerberosAuthenticator$1.
>>> run(KerberosAuthenticator.java:285)
>>>        at
>>> 
>>> org.apache.hadoop.security.authentication.client.KerberosAuthenticator$1.
>>> run(KerberosAuthenticator.java:261)
>>>        at java.security.AccessController.doPrivileged(Native Method)
>>>        at javax.security.auth.Subject.doAs(Subject.java:396)
>>>        at
>>> 
>>> org.apache.hadoop.security.authentication.client.KerberosAuthenticator.do
>>> SpnegoSequence(KerberosAuthenticator.java:261)
>>>        ... 6 more
>>> Error: Unable to initialize Falcon Client object
>> 
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> 

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