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From: Arinto Murdopo <arinto@gmail.com>
Date: Tue, 27 Nov 2012 20:26:08 +0100
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 <CAHg+FCKAxYtNKDKYnwNriT7cHoJuVVGzAKDKAyuJNsV+kn=u+w@mail.gmail.com>
Subject: Could not retrieve login configuration when trying to connect to
 ZooKeeper ensemble
To: user@zookeeper.apache.org
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Hi all,

We're currently developing simple ZooKeeper client to test its throughput
when ZK is used as persistent store in High Availability YARN (
https://issues.apache.org/jira/browse/YARN-128).

Here are some details about our configurations:

   - ZooKeeper client and library: version 3.4.5 stable release
   - ZK address: localhost:2184
   - Session timeout: 60 s
   - ACL Configuration: world:anyone:rwcda -> this will result in one entry
   in ACL list with "perms" value =3D 31, scheme=3D"world", and id=3D"anyon=
e"
   - And here is our code to connect to ZooKeeper ensemble in my local
   machine

*        ZooKeeper zk =3D new ZooKeeper(_zkHostPort, _zkSessionTimeout, nul=
l);
*
*        zk.register(new ForwardingWatcher(zk));*
*        return zk;*


However, I always encounter this error:
*DEBUG [main-SendThread(localhost:2184)] (ZooKeeperSaslClient.java:519) -
Could not retrieve login configuration: java.lang.SecurityException: Unable
to locate a login configuration*
*Nov 27, 2012 8:12:38 PM zkndb.storage.ZKStorageImpl storeApplicationState*
*
*
And eventually this security exception is thrown:
*DEBUG [main-SendThread(localhost:2184)] (ZooKeeperSaslClient.java:519) -
Could not retrieve login configuration: java.lang.SecurityException: Unable
to locate a login configuration*
*
*
So in this case, what is the possible case of this error?
The complete output from our simple client is shown below:

 Output:
 INFO [main] (Environment.java:100) - Client
environment:zookeeper.version=3D3.4.5-1392090, built on 09/30/2012 17:52 GM=
T
 INFO [main] (Environment.java:100) - Client environment:host.name=3Darinto
 INFO [main] (Environment.java:100) - Client
environment:java.version=3D1.6.0_35
 INFO [main] (Environment.java:100) - Client environment:java.vendor=3DSun
Microsystems Inc.
 INFO [main] (Environment.java:100) - Client
environment:java.home=3D/usr/java/jdk1.6.0_35/jre
 INFO [main] (Environment.java:100) - Client
environment:java.class.path=3D/usr/share/clusterj/clusterj-7.1.15a.jar:/usr=
/share/zookeeper/zookeeper-3.4.5.jar:/usr/share/guava/guava-13.0.1.jar:/usr=
/share/slf4j/slf4j-api-1.7.2.jar:/usr/share/slf4j/slf4j-log4j12-1.7.2.jar:/=
usr/share/log4j/log4j-1.2.17.jar:/home/arinto/gitproject/zkndb/build/classe=
s
 INFO [main] (Environment.java:100) - Client
environment:java.library.path=3D/usr/java/jdk1.6.0_35/jre/lib/amd64/server:=
/usr/java/jdk1.6.0_35/jre/lib/amd64:/usr/java/jdk1.6.0_35/jre/../lib/amd64:=
/usr/java/jdk1.7.0_09/jre/lib/amd64:/usr/java/jdk1.7.0_09/jre/lib/i386::/us=
r/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
 INFO [main] (Environment.java:100) - Client environment:java.io.tmpdir=3D/=
tmp
 INFO [main] (Environment.java:100) - Client environment:java.compiler=3D<N=
A>
 INFO [main] (Environment.java:100) - Client environment:os.name=3DLinux
 INFO [main] (Environment.java:100) - Client environment:os.arch=3Damd64
 INFO [main] (Environment.java:100) - Client
environment:os.version=3D3.2.0-33-generic
 INFO [main] (Environment.java:100) - Client environment:user.name=3Darinto
 INFO [main] (Environment.java:100) - Client
environment:user.home=3D/home/arinto
 INFO [main] (Environment.java:100) - Client
environment:user.dir=3D/home/arinto/gitproject/zkndb
 INFO [main] (ZooKeeper.java:438) - Initiating client connection,
connectString=3Dlocalhost:2184 sessionTimeout=3D60000 watcher=3Dnull
DEBUG [main] (ClientCnxn.java:99) - zookeeper.disableAutoWatchReset is fals=
e
 INFO [main-SendThread(localhost:2184)] (ClientCnxn.java:966) - Opening
socket connection to server localhost/127.0.0.1:2184. Will not attempt to
authenticate using SASL (Unable to locate a login configuration)
 INFO [main-SendThread(localhost:2184)] (ClientCnxn.java:849) - Socket
connection established to localhost/127.0.0.1:2184, initiating session
DEBUG [main-SendThread(localhost:2184)] (ClientCnxn.java:889) - Session
establishment request sent on localhost/127.0.0.1:2184
DEBUG [main-SendThread(localhost:2184)] (ZooKeeperSaslClient.java:519) -
Could not retrieve login configuration: java.lang.SecurityException: Unable
to locate a login configuration
Nov 27, 2012 8:12:38 PM zkndb.storage.ZKStorageImpl storeApplicationState
INFO: Storing info for app: -7686504933654477676 at:
/ZKRMStateRoot/-7686504933654477676
 INFO [main-SendThread(localhost:2184)] (ClientCnxn.java:1207) - Session
establishment complete on server localhost/127.0.0.1:2184, sessionid =3D
0x13b4342fd4a0002, negotiated timeout =3D 40000
DEBUG [main-SendThread(localhost:2184)] (ZooKeeperSaslClient.java:519) -
Could not retrieve login configuration: java.lang.SecurityException: Unable
to locate a login configuration
DEBUG [main-SendThread(localhost:2184)] (ZooKeeperSaslClient.java:519) -
Could not retrieve login configuration: java.lang.SecurityException: Unable
to locate a login configuration
DEBUG [main-SendThread(localhost:2184)] (ZooKeeperSaslClient.java:519) -
Could not retrieve login configuration: java.lang.SecurityException: Unable
to locate a login configuration
DEBUG [main-SendThread(localhost:2184)] (ZooKeeperSaslClient.java:519) -
Could not retrieve login configuration: java.lang.SecurityException: Unable
to locate a login configuration
DEBUG [main-SendThread(localhost:2184)] (ZooKeeperSaslClient.java:519) -
Could not retrieve login configuration: java.lang.SecurityException: Unable
to locate a login configuration
DEBUG [main-SendThread(localhost:2184)] (ZooKeeperSaslClient.java:519) -
Could not retrieve login configuration: java.lang.SecurityException: Unable
to locate a login configuration
DEBUG [main-SendThread(localhost:2184)] (ClientCnxn.java:815) - Reading
reply sessionid:0x13b4342fd4a0002, packet:: clientPath:null serverPath:null
finished:false header:: 1,1  replyHeader:: 1,429496729624,-101  request::
'/ZKRMStateRoot/-7686504933654477676,#ffffff9241ffffff9fffffffac6fffffffddf=
fffffc2fffffff31effffffe19ffffff8117fffffff027ffffff9c7d8ffffffd6ffffffa2ff=
ffffd5403ffffffd5ffffffbb13ffffffd2fffffffb3dffffff98ffffff97ffffff93ffffff=
f5353afffffff64644ffffffb8efffffffcffffffea177b6affffff96ffffffd0105921347d=
ffffffa3,v{s{31,s{'world,'anyone}}},0
 response::
DEBUG [main-SendThread(localhost:2184)] (ZooKeeperSaslClient.java:519) -
Could not retrieve login configuration: java.lang.SecurityException: Unable
to locate a login configuration
Nov 27, 2012 8:12:38 PM zkndb.storage.ZKStorageImpl storeApplicationState
Exception in when trying to store application state


Arinto Murdopo
European Master in Distributed Computing (EMDC)
Universitat Polit=E8cnica de Catalunya =B7 BarcelonaTech, Barcelona, Spain
KTH Royal Institute of Technology, Stockholm, Sweden
Phone: +46 725 548 759

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