Thanks, your suggestions is really helpful. Here's what did
1. Create a normal cluster(with HDFS)
2. shutdown cluster
3. remove HDFS service from stack.
curl -H "X-Requested-By: ambari" -u admin:admin -X DELETE http://
<ambari_server:port/api/v1/clusters/<clusterName>/services/HDFS
4. Configure core-site
su - hadoop
/var/lib/ambari-server/resources/scripts/configs.sh -port <port> set
<ambaris_host> <cluster_name> core-site "fs.defaultFS"
"hdfs://slc00dgd:55310"
On Sat, Mar 22, 2014 at 7:56 AM, Sumit Mohanty <[email protected]>wrote:
> This should be possible through API (I have not tried it myself).
>
> Here is what you are trying:
> * Define a cluster with no HDFS (say just YARN and ZK)
> * Add necessary configs for YARN and ZK
> * Add/modify core-site and hdfs-site to have the correct property values
> to point to the other cluster
> * Start all services
> You can do all the above with APIs.
>
> A way to achieve it with as much help as possible from the Web FE:
> * Create a cluster with HDFS, YARN, ZK (possibly Ganglia and Nagios if you
> need them)
> * After everything is setup and started correctly - stop all services
> * Delete HDFS using APIs
> * Modify hdfs-site and core-site to point to the other cluster (use
> configs.sh)
> * Start all services
> * Afterwards, you can clean up the left over HDFS files/folders on this
> cluster.
>
> *The above strategy is theoretically possible but I have not tried it*.
> So do try it on a test cluster first. The Apache Ambari WIKI has pages
> talking about sample API calls.
>
> Feel free to write up a summary if you go the above route and we can add
> it to the wiki.
>
> -Sumit
>
>
> On Fri, Mar 21, 2014 at 1:15 PM, Anfernee Xu <[email protected]>wrote:
>
>> Hi,
>>
>> Here's my situation, I have 2 Yarn clusters(A and B), the provisioning
>> process is straightforward for A, it will have HDFS, Yarn, and MR. NN and
>> RM is running on master machines of cluster A, and DataNode and NodeManager
>> is running on slave machines as usual. But the special requirement comes
>> from cluster B, in cluster B I only run Yarn components(RM and NM) and
>> having access to HDFS provisioned in cluster A(like a HDFS client). Without
>> Ambari, I could copy core-site.xml/hdfs-site.xml from A to B, so is it
>> possible to do it in Ambari? and how?
>>
>> --
>> --Anfernee
>>
>
>
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