Hi Simon, Apologise for replying to an old thread - may I know if you have managed to test this out on your lab? How was the result?
Thank you. On Thu, Feb 4, 2016 at 3:05 AM, Simon Weller <swel...@ena.com> wrote: > i'll test it out in our lab 4.7.1 lab and see what happens. > > ________________________________________ > From: Nux! <n...@li.nux.ro> > Sent: Wednesday, February 3, 2016 12:34 PM > To: users@cloudstack.apache.org > Cc: Mohd Zainal Abidin Rabani > Subject: Re: Re[2]: High Availability Cloudstack > > Simon, > > I think this is no longer correct. After a certain timeout the management > server will bring up the VMs on another hypervisor. We discussed this in > the somewhat recent past, but can't find the thread right now. > There was some nice insight from Wido or Marcus. > > Lucian > > -- > Sent from the Delta quadrant using Borg technology! > > Nux! > www.nux.ro > > ----- Original Message ----- > > From: "Simon Weller" <swel...@ena.com> > > To: "users" <users@cloudstack.apache.org> > > Cc: "Mohd Zainal Abidin Rabani" <zai...@nocser.net> > > Sent: Wednesday, 3 February, 2016 16:23:55 > > Subject: Re: Re[2]: High Availability Cloudstack > > > My understanding is that HA will never actually function on KVM there > way most > > expect, unless the original host that failed comes back up and the agents > > report the VMs not running. This is due to Cloudstack not wanting to risk > > starting a vm that already is locked by another process, on a different > server. > > > > The only way I know of to force HA to function is to remove the host out > of > > CloudStack, to force CloudStack to reallocate the VMs. > > > > There has been a lot of talk about introducing a reliable fencing > mechanism into > > management, so that CloudStack management is 100% confident the vm is > safe to > > restart on a new host. > > > > The current proposal for that is here: > > > https://cwiki.apache.org/confluence/display/CLOUDSTACK/KVM+HA+with+IPMI+Fencing > > > > - Si > > > > > > > > ________________________________________ > > From: Andrei Mikhailovsky <and...@arhont.com> > > Sent: Wednesday, February 3, 2016 1:49 AM > > To: users > > Cc: Mohd Zainal Abidin Rabani > > Subject: Re: Re[2]: High Availability Cloudstack > > > > Hi, > > > > from what i can can see, this issue has been resolved in version 4.4 and > Mohd is > > running 4.6. > > > > From my testing with KVM, the management server performs a poll once in > a while > > and the agent replies if a vm is up. It might take some time before the > state > > changes, like 30 seconds or so, so give it a bit more time. My testing > show > > that the management server does update the state if the vm is manually > powered > > down. > > > > I've not tested tha HA feature for sometime, but last time i checked it > was > > working. You should also set the HA option in the vm's system offering. > > > > Andrei > > ----- Original Message ----- > >> From: "Suresh Sadhu" <suresh.sa...@citrix.com> > >> To: "users" <users@cloudstack.apache.org>, "Mohd Zainal Abidin Rabani" > >> <zai...@nocser.net> > >> Sent: Wednesday, 3 February, 2016 06:24:49 > >> Subject: RE: Re[2]: High Availability Cloudstack > > > >> Please see below issue: > >> https://issues.apache.org/jira/browse/CLOUDSTACK-5582 > >> > >> regards > >> sadhu > >> > >> -----Original Message----- > >> From: Mohd Zainal Abidin Rabani [mailto:zai...@nocser.net] > >> Sent: Wednesday, February 3, 2016 10:12 AM > >> To: users@cloudstack.apache.org > >> Subject: Re[2]: High Availability Cloudstack > >> > >> I'm using KVM that come with centos 7. That management also using > centos 7. > >> Cloudstack version is 4.6. > >> > >> --------- > >> Regards, > >> Mohd Zainal Abidin Rabani > >> Technical Support > >> > >> ModernOne Data Solutions Sdn. Bhd.(1119382-D) No. 83-2, Jalan TKS 1, > Kajang > >> Sentral, 43000 Kajang, Selangor. > >> T : 03-8737 0030 | F : 03-8737 0070 > >> E : zai...@nocser.net > >> W : www.modern.com.my | www.nocser.net > >> > >> > >> > >> ------ Original Message ------ > >> From: "Abhinandan Prateek" <abhinandan.prat...@shapeblue.com> > >> To: "users@cloudstack.apache.org" <users@cloudstack.apache.org>; "Mohd > Zainal > >> Abidin Rabani" <zai...@nocser.net> > >> Sent: 03/02/2016 12:38:38 > >> Subject: Re: High Availability Cloudstack > >> > >>>MS version, Hypervisor ? Are there more hosts in the cluster ? > >>> > >>> > >>> > >>> > >>>Abhinandan PrateekSoftware Architect, ShapeBlued: | s: +44 203 603 > >>>0540 | m: +91 970 11 99011e: abhinandan.prat...@shapeblue.com | t: | > >>>w: www.shapeblue.coma: 53 Chandos Place, Covent Garden London WC2N 4HS > >>>UKShape 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. > >>> > >>> > >>>On 03/02/16, 9:24 AM, "Mohd Zainal Abidin Rabani" <zai...@nocser.net> > >>>wrote: > >>> > >>> >Hi, > >>> > > >>> >I try to do HA test for cloudstack. We are using DL380 G7. Same spec. > >>> >VM's have put option with HA. > >>> > > >>> >When i shutdown host A, from instance i can see all state is running. > >>> >But from insfrastructure host A already disconnected. Other instance > >>> >that not set using HA also state running. Suppose on instance that > >>> >use option HA is running and other than that is stopped. Is this is a > >>> >kind of bug? > >>> > > >>> >HA using what? Ping? Heartbeat? Why still show running? > >>> > > >>> >--------- > >>> >Regards, > >>> >Mohd Zainal Abidin Rabani > >>> >Technical Support > >>> > > >>> >ModernOne Data Solutions Sdn. Bhd.(1119382-D) No. 83-2, Jalan TKS 1, > >>> >Kajang Sentral, 43000 Kajang, Selangor. > >>> >T : 03-8737 0030 | F : 03-8737 0070 > >>> >E : zai...@nocser.net > >>> >W : www.modern.com.my | www.nocser.net > >>>Find out more about ShapeBlue and our range of CloudStack related > >>>services: > >>>IaaS Cloud Design & Build | CSForge – rapid IaaS deployment framework > >>>CloudStack Consulting | CloudStack Software Engineering CloudStack > > > >Infrastructure Support | CloudStack Bootcamp Training Courses >
