Thanks for the interest Simon, the feature has two HA provider (plugins, one for simulator and another for KVM+NFS) that can be used as reference implementations.
- Rohit ________________________________ From: Simon Weller <swel...@ena.com.INVALID> Sent: 12 July 2017 20:59:38 To: dev@cloudstack.apache.org Cc: Nathan Johnson; David Mabry; Aaron Hurt Subject: Re: [DISCUSS] Host HA in 4.11 We are very excited about this feature set, as it adds some really important features for KVM. We don't use NFS, so I think our goal will be seeing what we can contribute to include Ceph on the supported storage list. - Si ________________________________ From: Rohit Yadav <rohit.ya...@shapeblue.com> Sent: Wednesday, July 12, 2017 5:43 AM To: dev@cloudstack.apache.org Subject: [DISCUSS] Host HA in 4.11 All, Few months ago I had started discussion on Host HA for CloudStack and given 4.10 is voted and to be announced with master branch cut I would like to re-kick discussion around reviewing and acceptance of the feature that is pending since Feb 2017. To briefly share some key points: - This feature is disabled by default and provides zone/cluster/host level kill switches - This brings in a reliable way to fence (power off) and recover (reboot) a host - Allows implementation of HA provider plugin specific to a hypervisor and storage stack, by default we've implemented a plugin for hosts that have KVM+NFS - For more details please read the FS: https://cwiki.apache.org/confluence/display/CLOUDSTACK/Host+HA Host HA - Apache Cloudstack - Apache Software Foundation<https://cwiki.apache.org/confluence/display/CLOUDSTACK/Host+HA> cwiki.apache.org CLOUDSTACK-9782. Branch. Yet to start, share the PR. Introduction. CloudStack lacks a way to reliably fence a host, the idea of the host-ha feature is to provide a ... I had also given a talk about this feature during CCCNA17: Reliable host fencing - http://rohit.yadav.xyz/files/talks/cccna17-reliable-host-fencing.pdf Pull request: https://github.com/apache/cloudstack/pull/1960 (as soon as the 4.10->4.11 db upgrade paths are fixed, I can rebase and fix the branch) [https://avatars1.githubusercontent.com/u/95203?v=3&s=400]<https://github.com/apache/cloudstack/pull/1960> [4.11/Future] CLOUDSTACK-9782: Host HA and KVM HA provider by rhtyd · Pull Request #1960 · apache/cloudstack<https://github.com/apache/cloudstack/pull/1960> github.com Host-HA offers investigation, fencing and recovery mechanisms for host that for any reason are malfunctioning. It uses Activity and Health checks to determine current host state based on which it m... - Rohit rohit.ya...@shapeblue.com www.shapeblue.com<http://www.shapeblue.com> [http://www.shapeblue.com/wp-content/uploads/2017/06/logo.png]<http://www.shapeblue.com/> Shapeblue - The CloudStack Company<http://www.shapeblue.com/> www.shapeblue.com<http://www.shapeblue.com> Rapid deployment framework for Apache CloudStack IaaS Clouds. CSForge is a framework developed by ShapeBlue to deliver the rapid deployment of a standardised ... 53 Chandos Place, Covent Garden, London WC2N 4HSUK @shapeblue rohit.ya...@shapeblue.com www.shapeblue.com 53 Chandos Place, Covent Garden, London WC2N 4HSUK @shapeblue
