I was just about to ask …. I fired up 1.6.1 to see how delete host works … the first thing I ran into was the error message telling me that I couldn’t delete the host because it had master components running on it, so I would have to ‘move’ those off to another host first… I couldn’t see how to do that in ambari-web and from your comments below I now know why :) So looking at the REST api, I couldn’t find any information about deleting components either…. Q: could you give an example of the REST calls needed to ‘move’ a master component from one host to another? Q: what is maintenance mode and when would I need to use it? Is it related to this kind of workflow? Q: in the code for deleteHosts() there is a check for the existence of roles on a host and if any exist an exception is thrown. Does merely stopping a component remove its role from that host? I’m a little confused as to how that works…
thanks Aaron From: Yusaku Sako <[email protected]<mailto:[email protected]>> Reply-To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Date: Friday, September 26, 2014 at 6:36 AM To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Subject: Re: delete host/component Hi João, Unfortunately this is not available via the UI yet. You need to move the Storm master components (delete from the original host and create on another host) via the REST API. Once you do that, you can delete the host from the UI (or REST API). Yusaku On Fri, Sep 26, 2014 at 12:10 AM, João Alves <[email protected]<mailto:[email protected]>> wrote: On a related subject, any solution on how to decommission a host with Storm Master components? Related JIRA: https://issues.apache.org/jira/browse/AMBARI-6676 On 26 Sep 2014, at 02:21, Alejandro Fernandez <[email protected]<mailto:[email protected]>> wrote: In Ambari 1.5.* - 1.6.1, it is also necessary to stop the agent from heartbeating while attempting to delete it either via a curl call or the website. See AMBARI-6585 On Thu, Sep 25, 2014 at 4:45 PM, Aaron Cody <[email protected]<mailto:[email protected]>> wrote: thanks Yusaku So am I correct in assuming that in order to delete a host, all components on that host must first be uninstalled? i.e. it¹s not enough to just stop them ... Aaron Cody Sr. Software Engineer office: 415 465 2232<tel:415%20465%202232> skype: aaron.hexis www.hexiscyber.com<http://www.hexiscyber.com/> <http://www.hexiscyber.com/> <http://www.hexiscyber.com/> CONFIDENTIALITY NOTICE: This electronic message transmission and any attachments contain information from KEYW Corporation and are intended solely for the use of the named recipient or recipients. This email may contain privileged and/or company proprietary information. Any dissemination of this email by anyone other than an intended recipient is strictly prohibited. If you are not a named recipient, you are prohibited from any further viewing of the email or any attachments or from making any use of the email or attachments. If you believe you have received this email in error, please notify the sender immediately and permanently delete the email, all attachments, and all copies thereof from any drives or storage media and destroy any printouts of the email or attachments. On 9/24/14, 4:04 PM, "Yusaku Sako" <[email protected]<mailto:[email protected]>> wrote: >FYI. The Features + Roadmap wiki [1] shows that "delete host" was >introduced as part of Ambari 1.4.2. > >[1] >https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=30755705 > >Thanks, >Yusaku > >On Wed, Sep 24, 2014 at 1:12 PM, Greg Hill ><[email protected]<mailto:[email protected]>> >wrote: >> I'm not sure. The first version I used was 1.6.0 and it existed by >>then. >> >> Greg >> >> From: Aaron Cody <[email protected]<mailto:[email protected]>> >> Reply-To: "[email protected]<mailto:[email protected]>" >> <[email protected]<mailto:[email protected]>> >> Date: Wednesday, September 24, 2014 2:52 PM >> To: "[email protected]<mailto:[email protected]>" >> <[email protected]<mailto:[email protected]>> >> Subject: Re: delete host/component >> >> great! when was that functionality introduced? ( I¹m still on 1.2.4) >> thanks >> >> From: Greg Hill <[email protected]<mailto:[email protected]>> >> Reply-To: "[email protected]<mailto:[email protected]>" >> <[email protected]<mailto:[email protected]>> >> Date: Wednesday, September 24, 2014 at 12:49 PM >> To: "[email protected]<mailto:[email protected]>" >> <[email protected]<mailto:[email protected]>> >> Subject: Re: delete host/component >> >> Yes, they are. You have to stop the components on that host, then >>remove >> the components from the host, then you can remove the host from the >>cluster. >> >> Greg >> >> From: Aaron Cody <[email protected]<mailto:[email protected]>> >> Reply-To: "[email protected]<mailto:[email protected]>" >> <[email protected]<mailto:[email protected]>> >> Date: Wednesday, September 24, 2014 2:41 PM >> To: "[email protected]<mailto:[email protected]>" >> <[email protected]<mailto:[email protected]>> >> Subject: delete host/component >> >> hi >> are these operations supported in the REST api yet? >> > >-- >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. -- [Hortonworks, Inc.]<http://hortonworks.com/> Alejandro Fernandez<mailto:[email protected]> Engineering - Ambari 786.303.7149<tel:786.303.7149> 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. 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.
