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
