Apologies -- I forgot to add that I'm currently on 1.2.3.7 but upgrading should be fine if necessary.
On Wed, Aug 14, 2013 at 9:24 AM, Chadwick Banning <[email protected] > wrote: > Thank you for all your help -- I appreciate it. > > Does Ambari support completely removing hosts via the API? I could > conceivably decommission the node, then remove it completely from Ambari > (if this can be done), then re-install and join it to the cluster under a > new name. > > Assuming this is possible, would I then later be able to join another node > to the cluster under the old name that was removed? > > > On Wed, Aug 14, 2013 at 2:43 AM, Sumit Mohanty > <[email protected]>wrote: > >> At this point, Ambari does not support deleting components. So when the >> host is brought back up online then Ambari will think that the components >> are already deployed and it will not allow you to deploy again. However, if >> the host comes back up with a different name you can use the Add Host >> feature to add the host to the cluster as well as deploy the components. >> This way you will get the processing capacity back except you will see some >> components always in UNKNOWN state (these components are the ones mapped to >> host that no longer exists). >> >> I assume you are using Ambari version 1.2.4.9. >> >> Feel free to to open JIRAs if you identify any improvements. >> >> From: Chadwick Banning <[email protected]> >> Reply-To: <[email protected]> >> Date: Tuesday, August 13, 2013 8:31 AM >> To: <[email protected]> >> Subject: Re: Remove and re-add node >> >> The node has the following installed: >> >> - DataNode >> - Ganglia Monitor >> - HBase Regionserver >> - TaskTrack >> - Clients: HBase Client, HCat, HDFS Client, MapReduce Client, Oozie >> Client, Pig, Sqoop, ZooKeeper Client >> >> >> >> >> On Tue, Aug 13, 2013 at 11:18 AM, Sumit Mohanty <[email protected] >> > wrote: >> >>> Do you have any hadoop component installed on that node? If not, then >>> the steps you have described will work. After the agent comes up and >>> registers with the same name as before it will work. >>> >>> From: Chadwick Banning <[email protected]> >>> Reply-To: <[email protected]> >>> Date: Tuesday, August 13, 2013 7:01 AM >>> To: <[email protected]> >>> Subject: Remove and re-add node >>> >>> Quick question -- >>> >>> Is there a way to remove a node from Ambari and then re-add it? I have >>> a cluster member thats having issues and I would like to remove it, >>> re-install the OS, and then re-join it to the cluster. >>> >>> Would I be able to just shutdown the machine, re-install the OS (which >>> is on disks separate from the data disks), restart the machine, re-install >>> the ambari-agent manually and have Ambari take over from there? >>> >> >> >> CONFIDENTIALITY NOTICE >> NOTICE: This message is intended for the use of the individual or entity >> to which it is addressed and may contain information that is confidential, >> privileged and exempt from disclosure under applicable law. If the reader >> of this message is not the intended recipient, you are hereby notified that >> any printing, copying, dissemination, distribution, disclosure or >> forwarding of this communication is strictly prohibited. If you have >> received this communication in error, please contact the sender immediately >> and delete it from your system. Thank You. > > >
