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From Indra Pramana <in...@sg.or.id>
Subject Re: Re[2]: High Availability Cloudstack
Date Fri, 08 Apr 2016 02:42:55 GMT
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 <sweller@ena.com> wrote:

> i'll test it out in our lab 4.7.1 lab and see what happens.
>
> ________________________________________
> From: Nux! <nux@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" <sweller@ena.com>
> > To: "users" <users@cloudstack.apache.org>
> > Cc: "Mohd Zainal Abidin Rabani" <zainal@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 <andrei@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.Sadhu@citrix.com>
> >> To: "users" <users@cloudstack.apache.org>, "Mohd Zainal Abidin Rabani"
> >> <zainal@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:zainal@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 : zainal@nocser.net
> >> W : www.modern.com.my | www.nocser.net
> >>
> >>
> >>
> >> ------ Original Message ------
> >> From: "Abhinandan Prateek" <abhinandan.prateek@shapeblue.com>
> >> To: "users@cloudstack.apache.org" <users@cloudstack.apache.org>; "Mohd
> Zainal
> >> Abidin Rabani" <zainal@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.prateek@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" <zainal@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 : zainal@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
>

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