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From Szalay-Bekő Máté <szalay.beko.m...@gmail.com>
Subject Re: ZooKeeper in secure mode
Date Fri, 17 Jan 2020 08:43:31 GMT
For testing it on the real Hadoop cluster with real Kerberos, we used
ZooKeeper 3.5.5.
AFAIK ZooKeeper 3.5.6 should behave just the same in terms of SASL and SSL.

(I also created unit tests for SASL + SSL in the PRs of the Jira ticket I
mentioned, those can give you configuration examples for the branches 3.5
and master)

Regards,
Mate

On Fri, Jan 17, 2020 at 4:40 AM Praveen Kumar K S <praveen@securelyshare.com>
wrote:

> Thanks Mate. May I know the version of zookeeper you are using?
>
> Regards,
> Praveen Kumar K S
> +91-9986855625
>
>
> On Thu, Jan 16, 2020 at 8:45 PM Szalay-Bekő Máté <
> szalay.beko.mate@gmail.com>
> wrote:
>
> > Hi Praveen,
> >
> > Regarding SASL, some useful links:
> > -
> >
> >
> https://cwiki.apache.org/confluence/display/ZOOKEEPER/Client-Server+mutual+authentication
> > (I
> > just updated this page today)
> > - I was also checking the Kerberos JAAS configs when I tried these things
> > locally:
> >
> >
> https://docs.oracle.com/javase/8/docs/jre/api/security/jaas/spec/com/sun/security/auth/module/Krb5LoginModule.html
> > - this is a good howto as well:
> https://github.com/ekoontz/zookeeper/wiki
> > -
> >
> >
> https://cwiki.apache.org/confluence/display/ZOOKEEPER/Server-Server+mutual+authentication
> >
> > In this Jira case you can see some zoo.cfg and client configs that we
> used
> > to test SASL + SSL:
> >
> >
> https://issues.apache.org/jira/browse/ZOOKEEPER-3482?focusedCommentId=16998033&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-16998033
> >
> > With these configs we were managed to use ZooKeeper SASL + SSL on a real
> > Hadoop cluster using MIT Kerberos.
> >
> > Mate
> >
> > On Thu, Jan 16, 2020 at 10:39 AM Praveen Kumar K S <
> > praveen@securelyshare.com> wrote:
> >
> > > Thanks Enrico. I was also looking at
> > > https://issues.apache.org/jira/browse/ZOOKEEPER-2220 who is facing
> same
> > > issue.
> > >
> > > I will try with your suggestion. My requirement is to enable SASL based
> > > authentication between server-server and client-server.
> > >
> > > Please advise if I'm looking at the right place or is there any better
> > > documentation.
> > >
> > > Regards,
> > > Praveen Kumar K S
> > > +91-9986855625
> > >
> > >
> > > On Thu, Jan 16, 2020 at 3:01 PM Enrico Olivelli - Diennea <
> > > enrico.olivelli@diennea.com> wrote:
> > >
> > > > Praveen
> > > > In order to use Netty it is better for you to use 3.5.6 that contains
> > > > Netty 4, ZooKeeper 3.4.x uses the deprecated Netty 3. For TSL, and it
> > is
> > > > known to have security flaws and it is no more maintained
> > > >
> > > > Btw your problem looks like there is a missing class and it is weird
> > > >
> > > > Enrico
> > > >
> > > > Il giorno 16/01/20, 10:25 "Praveen Kumar K S" <
> > > praveen@securelyshare.com>
> > > > ha scritto:
> > > >
> > > >     Hello,
> > > >
> > > >     I'm looking for help on enabling authentication in zookeeper.
> > Please
> > > > note
> > > >     below approach I have tried.
> > > >
> > > >     1. I followed
> > > >
> > > >
> > >
> >
> https://cwiki.apache.org/confluence/display/ZOOKEEPER/ZooKeeper+SSL+User+Guide
> > > >     2. I'm deploying zookeeper as single node using docker
> > > >     3. Zookeeper version is 3.4.13
> > > >     4. Below are some important environmental variables in zookeeper
> > > > container
> > > >
> > > >
> > > >
> > >
> >
> CLIENT_JVMFLAGS=-Dzookeeper.clientCnxnSocket=org.apache.zookeeper.ClientCnxnSocketNetty
> > > >     -Dzookeeper.client.secure=true
> > > >
> > >
> -Dzookeeper.ssl.keyStore.location=/opt/vault/zookeeper/ssl/KeyStore.jks
> > > >     -Dzookeeper.ssl.keyStore.password=XX@123
> > > >
> > > >
> > >
> >
> -Dzookeeper.ssl.trustStore.location=/opt/vault/zookeeper/ssl/truststore.jks
> > > >     -Dzookeeper.ssl.trustStore.password=XX@123
> > > >
> > > >
> > > >
> > >
> >
> SERVER_JVMFLAGS=-Dzookeeper.serverCnxnFactory=org.apache.zookeeper.server.NettyServerCnxnFactory
> > > >
> > >
> -Dzookeeper.ssl.keyStore.location=/opt/vault/zookeeper/ssl/KeyStore.jks
> > > >     -Dzookeeper.ssl.keyStore.password=XX@123
> > > >
> > > >
> > >
> >
> -Dzookeeper.ssl.trustStore.location=/opt/vault/zookeeper/ssl/truststore.jks
> > > >     -Dzookeeper.ssl.trustStore.password=XX@123
> > > >
> > > >
> > > >
> > >
> >
> zookeeper.serverCnxnFactory="org.apache.zookeeper.server.NettyServerCnxnFactory"
> > > >
> > > >     5. Below is conf file
> > > >     server.1=0.0.0.0:2888:3888
> > > >     secureClientPort=2281
> > > >     initLimit=5
> > > >     syncLimit=2
> > > >     tickTime=2000
> > > >     clientPort=2181
> > > >     clientPortAddress=zookeeper
> > > >     dataLogDir=/opt/vault/zookeeper/logs
> > > >     dataDir=/opt/vault/zookeeper/data
> > > >
> > > >     6. Zookeeper is healthy
> > > >     7. I tried connecting to Zookeeper server from my machine using
> > > > zkCli.sh.
> > > >     But getting below error
> > > >
> > > >     2020-01-16 14:21:27,798 [myid:] - INFO  [main:ZooKeeper@442] -
> > > > Initiating
> > > >     client connection, connectString=zookeeper:2281
> > sessionTimeout=30000
> > > >     watcher=org.apache.zookeeper.ZooKeeperMain$MyWatcher@531d72ca
> > > >     Exception in thread "main" java.io.IOException: Couldn't
> > instantiate
> > > >     org.apache.zookeeper.ClientCnxnSocketNetty
> > > >     at
> > > >
> org.apache.zookeeper.ZooKeeper.getClientCnxnSocket(ZooKeeper.java:1851)
> > > >     at org.apache.zookeeper.ZooKeeper.<init>(ZooKeeper.java:453)
> > > >     at
> > > >
> org.apache.zookeeper.ZooKeeperMain.connectToZK(ZooKeeperMain.java:283)
> > > >     at
> > org.apache.zookeeper.ZooKeeperMain.<init>(ZooKeeperMain.java:297)
> > > >     at
> org.apache.zookeeper.ZooKeeperMain.main(ZooKeeperMain.java:290)
> > > >     Caused by: java.lang.ClassNotFoundException:
> > > >     org.apache.zookeeper.ClientCnxnSocketNetty
> > > >     at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
> > > >     at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
> > > >     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
> > > >     at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
> > > >     at java.lang.Class.forName0(Native Method)
> > > >     at java.lang.Class.forName(Class.java:264)
> > > >     at
> > > >
> org.apache.zookeeper.ZooKeeper.getClientCnxnSocket(ZooKeeper.java:1848)
> > > >     ... 4 more
> > > >
> > > >     8.Zookeeper is working fine on 2181
> > > >     9.I tried to connect Kafka to Zookeeper on port 2281. Getting
> below
> > > > error
> > > >
> > > >     [2020-01-16 09:12:07,477] INFO Initiating client connection,
> > > >     connectString=zookeeper:2281 sessionTimeout=6000
> > > >
> > > >
> > watcher=kafka.zookeeper.ZooKeeperClient$ZooKeeperClientWatcher$@5c33f1a9
> > > >     (org.apache.zookeeper.ZooKeeper)
> > > >     [2020-01-16 09:12:07,488] INFO [ZooKeeperClient] Waiting until
> > > > connected.
> > > >     (kafka.zookeeper.ZooKeeperClient)
> > > >     [2020-01-16 09:12:07,489] INFO Opening socket connection to
> server
> > > >     zookeeper/172.16.13.2:2281. Will not attempt to authenticate
> using
> > > > SASL
> > > >     (unknown error) (org.apache.zookeeper.ClientCnxn)
> > > >     [2020-01-16 09:12:07,493] INFO Socket error occurred: zookeeper/
> > > >     172.16.13.2:2281: Connection refused
> > > (org.apache.zookeeper.ClientCnxn)
> > > >     [2020-01-16 09:12:08,599] INFO Opening socket connection to
> server
> > > >     zookeeper/172.16.13.2:2281. Will not attempt to authenticate
> using
> > > > SASL
> > > >     (unknown error) (org.apache.zookeeper.ClientCnxn)
> > > >
> > > >     Please help and advice.
> > > >
> > > >     Regards,
> > > >     Praveen Kumar K S
> > > >     +91-9986855625
> > > >
> > > >
> > > >
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