Hi Amir,

I get the quorum idea for 3 nodes. However for simple testing using 3
servers is a bit costly, I'd rather have a system were I can deploy a
single instance, then move it to production in a second step. I think that
is what people do and expect.

Is there a way to fix even if it's not production ready to have a single
server?





Best,
Samuel

--
Samuel Cozannet
Cloud, Big Data and IoT Strategy Team
Strategic Program Manager
Changing the Future of Cloud
Ubuntu <http://ubuntu.com> / Canonical <http://canonical.com> UK LTD
<email address hidden>
+33 616 702 389


On Wed, Nov 26, 2014 at 4:08 PM, amir sanjar <email address hidden>
wrote:

> I just ran a test on hdp-zookeeper quorum ( 3 nodes as required by
> hortonworks)
> tickTime=2000
> # The number of ticks that the initial
> # synchronization phase can take
> initLimit=10
> # The number of ticks that can pass between
> # sending a request and getting an acknowledgement
> syncLimit=5
> # the directory where the snapshot is stored.
> dataDir=/grid/hadoop/zookeeper/data
> # the port at which the clients will connect
> clientPort=2181
> server.1=10.0.3.217:2888:3888
> # server.2=TODO-ZKSERVER-HOSTNAME:2888:3888
> # server.3=TODO-ZKSERVER-HOSTNAME:2888:3888
> server.0=10.0.3.26:2888:3888
> server.2=10.0.3.107:2888:3888
>
> It looks like you are using a standalone zookeeper node and not quorum, a
> practice that is not used
> in production environment. This charm was design based on hortonworks
> quorum requirement based
> on real production scenarios (
> http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.1.1/bk_installing_manually_book/content/rpm-zookeeper-3.html
> ).
> However, modification for a single node quorum should not be difficult.
> Again, do strongly recommend to not use a single node
> zookeeper  in any production scenario.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1396525
>
> Title:
>   ZooKeeper configuration error
>
> Status in “hdp-zookeeper” package in Juju Charms Collection:
>   New
>
> Bug description:
>   When deploying with
>
>   juju deploy hdp-zookeeper
>
>   the configuration on the zookeeper node that is created looks like:
>
>   ubuntu@scozannet-local-machine-2:~$ cat /etc/zookeeper/conf/zoo.cfg
>   #
>   #
>   # Licensed to the Apache Software Foundation (ASF) under one
>   # or more contributor license agreements.  See the NOTICE file
>   # distributed with this work for additional information
>   # regarding copyright ownership.  The ASF licenses this file
>   # to you under the Apache License, Version 2.0 (the
>   # "License"); you may not use this file except in compliance
>   # with the License.  You may obtain a copy of the License at
>   #
>   #   http://www.apache.org/licenses/LICENSE-2.0
>   #
>   # Unless required by applicable law or agreed to in writing,
>   # software distributed under the License is distributed on an
>   # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
>   # KIND, either express or implied.  See the License for the
>   # specific language governing permissions and limitations
>   # under the License.
>   #
>   #
>   #
>
>   # The number of milliseconds of each tick
>   tickTime=2000
>   # The number of ticks that the initial
>   # synchronization phase can take
>   initLimit=10
>   # The number of ticks that can pass between
>   # sending a request and getting an acknowledgement
>   syncLimit=5
>   # the directory where the snapshot is stored.
>   dataDir=/grid/hadoop/zookeeper/data
>   # the port at which the clients will connect
>   clientPort=2181
>   server.1=TODO-ZKSERVER-HOSTNAME:2888:3888
>   # server.2=TODO-ZKSERVER-HOSTNAME:2888:3888
>   # server.3=TODO-ZKSERVER-HOSTNAME:2888:3888
>   server.0=10.0.3.54:2888:3888
>
>   As you can see there is a line with "server.1 = " that is configured
>   with real data. This blocks ZooKeeper and it doesn't start at all. It
>   is impossible to integrate other apps with it.
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/charms/+source/hdp-zookeeper/+bug/1396525/+subscriptions
>