Hi Rohit,
Host maintenance is already there to address the use cases mentioned. What additional value would this feature add? Also if it is just providing the IPMI based operations then it is only limited to the hosts already added to CS, what about new hosts not added in CS? What if host IP/name/password etc. which are already stored in CS needs to be changed? Some questions on use cases. * Restarting stalled/failed hosts [Koushik] How do you determine if a host stalled/failed? What happens if the host lost network connectivity intermittently? * Powering off under-utilised hosts [Koushik] What is the definition of "under-utilised" - no VMs or based on some resource threshold? If there are some running VMs (HA and non-HA) what happens to them? * Powering on hosts for provisioning and to increase capacity (for hosts already provisioned) [Koushik] Again how do you power on new hosts not yet added to CS? * Allowing system administrators to see the current power state of the host [Koushik] When would the power state differ from the existing host state shown in CS? There can be certain corner scenarios when CS may not determine the host state conclusively (e.g. last host in cluster), but otherwise shouldn't it be the same? Thanks, Koushik ________________________________ From: Rohit Yadav <rohit.ya...@shapeblue.com> Sent: Thursday, March 3, 2016 4:13 PM To: dev@cloudstack.apache.org Subject: [DISCUSS] Request for comments: Out-of-band Management for CloudStack (new feature) Hi all, I want to propose this new feature for CloudStack, to support out-of-band management for CloudStack. In practice, most hosts have a out-of-band management such as iLO or iDRAC (that can support IPMI 2.0 for example). The idea is to allow admins to access this out-of-band management interface. Initially power-state related operations will be supported such as power on/off/reset etc. and a background service to synchronize the power states of the out-of-band management enabled hosts. Please have a look at the FS and share your feedback on the same: https://cwiki.apache.org/confluence/display/CLOUDSTACK/Out-of-band+Management+for+CloudStack For testing this feature, I've created this tool/library that is a fake ipmi server that can be run as a standalone server/tool and also importable to write Marvin tests: https://github.com/bhaisaab/ipmisim Thanks and regards. PS. I'll be demoing this feature in today's CSEUG meetup in London [ShapeBlue]<http://www.shapeblue.com> Rohit Yadav Software Architect , ShapeBlue d: | s: +44 203 603 0540<tel:|%20s:%20+44%20203%20603%200540> | m: +91 8826230892<tel:+91%208826230892> e: rohit.ya...@shapeblue.com | t: <mailto:rohit.ya...@shapeblue.com%20|%20t:> | w: www.shapeblue.com<http://www.shapeblue.com> a: 53 Chandos Place, Covent Garden London WC2N 4HS UK [cid:image4b88c6.png@2526f1f5.4a8f6b4e] Shape Blue Ltd is a company incorporated in England & Wales. ShapeBlue Services India LLP is a company incorporated in India and is operated under license from Shape Blue Ltd. Shape Blue Brasil Consultoria Ltda is a company incorporated in Brasil and is operated under license from Shape Blue Ltd. ShapeBlue SA Pty Ltd is a company registered by The Republic of South Africa and is traded under license from Shape Blue Ltd. ShapeBlue is a registered trademark. This email and any attachments to it may be confidential and are intended solely for the use of the individual to whom it is addressed. Any views or opinions expressed are solely those of the author and do not necessarily represent those of Shape Blue Ltd or related companies. If you are not the intended recipient of this email, you must neither take any action based upon its contents, nor copy or show it to anyone. Please contact the sender if you believe you have received this email in error. Find out more about ShapeBlue and our range of CloudStack related services: IaaS Cloud Design & Build<http://shapeblue.com/iaas-cloud-design-and-build//> | CSForge - rapid IaaS deployment framework<http://shapeblue.com/csforge/> CloudStack Consulting<http://shapeblue.com/cloudstack-consultancy/> | CloudStack Software Engineering<http://shapeblue.com/cloudstack-software-engineering/> CloudStack Infrastructure Support<http://shapeblue.com/cloudstack-infrastructure-support/> | CloudStack Bootcamp Training Courses<http://shapeblue.com/cloudstack-training/> DISCLAIMER ========== This e-mail may contain privileged and confidential information which is the property of Accelerite, a Persistent Systems business. It is intended only for the use of the individual or entity to which it is addressed. If you are not the intended recipient, you are not authorized to read, retain, copy, print, distribute or use this message. If you have received this communication in error, please notify the sender and delete all copies of this message. Accelerite, a Persistent Systems business does not accept any liability for virus infected mails.
