its for Nimbus HA
http://hortonworks.com/blog/fault-tolerant-nimbus-in-apache-storm/
On Sun, Mar 13, 2016, at 11:27 PM, Sai Dilip Reddy Kiralam wrote:
>
> Hi Harsha,
> can you explain why nimbus seeds are used - [nimbus.seeds: ["host1", "host2",
> "host3"];]
>
> ** **
>
>
>
> On Mon, Mar 14, 2016 at 9:49 AM, Harsha <[email protected]> wrote:
>> __
>> Vibha,
>> For multi-node cluster the main config we need are
>> nimbus.seeds: ["nimbus_host_name"]
>> storm.zookeeper.servers:
>> - "zookeeper_host_name"
>> - "zookeeper_host_name"
>>
>> You can look at the example here
>> https://github.com/apache/storm/blob/master/conf/storm.yaml.example
>>
>> make sure you copy the same storm.yaml in all the nodes in the storm
>> cluster.
>>
>>
>> -Harsha
>>
>>
>>
>> On Sun, Mar 13, 2016, at 05:07 PM, Xiang Wang wrote:
>>> Hi,
>>>
>>> I guess you are in the wrong directory. Do "mvn package" under
>>> "$STORM_HOME/examples/storm-
>>> starter/". Then you can find a jar like "storm-starter-0.10.0.jar"
>>> in the target directory, which should be uploaded to storm cluster.
>>>
>>>
>>>
>>>
>>> -------------------------------
>>> Xiang Wang PhD Candidate
>>> Database Research Group
>>>
>>> School of Computer Science and Engineering
>>>
>>> The University of New South Wales
>>>
>>> Sydney, Australia
>>>
>>> On Mon, Mar 14, 2016 at 7:43 AM, vibha goyal <[email protected]> wrote:
>>>> Hi,
>>>>
>>>> I am grad student, and I am working on Storm as a part of my course
>>>> project.
>>>>
>>>> I have cloned the source code from git, and followed the
>>>> instructions.
>>>>
>>>> I am using branch : 0.10.0
>>>>
>>>> After "mvn package", when I copy the apache-storm-<version>.tar.gz
>>>> in my home,
>>>> untar it and try to run nimbus.
>>>>
>>>> I get error:
>>>>
>>>> Exception in thread "main" java.lang.ExceptionInInitializerError
>>>> at
>>>> org.apache.storm.utils.ConfigUtils.readStormConfigImpl(ConfigUtils.java:138)
>>>> at org.apache.storm.utils.ConfigUtils.readStormConfig(ConfigUtils.java:134)
>>>> at org.apache.storm.command.ConfigValue.main(ConfigValue.java:27)
>>>> Caused by: java.lang.RuntimeException: java.io.IOException: Found multiple
>>>> storm.yaml resources. You're probably bundling the Storm jars with your
>>>> topology jar.
>>>> [jar:file:/home/vgoyal5/apache-storm-2.0.0-SNAPSHOT/lib/storm-core-2.0.0-SNAPSHOT.jar!/storm.yaml,
>>>> file:/home/vgoyal5/apache-storm-2.0.0-SNAPSHOT/conf/storm.yaml]
>>>> at org.apache.storm.utils.Utils.findAndReadConfigFile(Utils.java:372)
>>>> at org.apache.storm.utils.Utils.readStormConfig(Utils.java:456)
>>>> at org.apache.storm.utils.Utils.<clinit>(Utils.java:173)
>>>> ... 3 more
>>>>
>>>>
>>>> I deleted the "/home/vgoyal5/apache-storm-2.0.0-
>>>> SNAPSHOT/conf/storm.yaml" file and again tried.
>>>>
>>>> This time I was able to connect the nimbus and supervisors and
>>>> could see the connections in UI.
>>>>
>>>> As soon as I tried to submit the topology with the command:
>>>>
>>>>
>>>> storm jar examples/storm-starter/target/storm-starter-2.0.0-
>>>> SNAPSHOT.jar org.apache.storm.starter.ExclamationTopology exclamation-
>>>> topology
>>>>
>>>>
>>>> I got error:
>>>>
>>>> org.apache.storm.utils.NimbusLeaderNotFoundException: Could not find
>>>> leader nimbus from seed hosts [sp16-cs525-g05-01.cs.illinois.edu]. Did you
>>>> specify a valid list of nimbus hosts for config nimbus.seeds?
>>>>
>>>> First ,I am not able to resolve this error,
>>>>
>>>> and second, I cannot make changes in storm.yaml as I deleted the
>>>> conf/storm.yaml
>>>>
>>>> I am a beginner in Storm. I have been trying this for a day now.
>>>> Any help would be appreciated!!
>>>>
>>>>
>>>>
>>>> Thanks!
>>>>
>>>>
>>>> Vibha Goyal
>>>>
>>
