cloudstack-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Sateesh Chodapuneedi <sateesh.chodapune...@citrix.com>
Subject RE: HA question
Date Thu, 28 Feb 2013 04:46:17 GMT
For VMware, CloudStack uses native HA provided by VMware.
VMware provides HA at the level of cluster.

Regards,
Sateesh

> -----Original Message-----
> From: Nitin Mehta [mailto:Nitin.Mehta@citrix.com]
> Sent: 28 February 2013 10:13
> To: cloudstack-dev@incubator.apache.org
> Cc: Hari Kannan
> Subject: Re: HA question
> 
> CS has its own HA logic and doesn't use the native HA of the HV and so the
> question for enabling the HA for hosts doesn't arise. This is true for XS.
> For Vmware and KVM, I will let the guru's speak :)
> 
> On 28/02/13 9:55 AM, "kdamage@apache.org" <kdamage@apache.org> wrote:
> 
> >Thanks that¹s awesome, but not quite the answer I was looking for.
> >
> >To better phrase my question, if the cluster is the basic unit of
> >availability, when hosts are enabled for HA, must all hosts in the
> >cluster be enabled? Or can the cluster exist with a non-uniform
> >structure, having only some hosts enabled for HA?
> >
> >You partially answered it with the special reserve HA hosts, but I'm
> >looking more in terms of general use.
> >
> >Thanks
> >
> >-kelcey
> >
> >
> >>-----Original Message-----
> >>From: Hari Kannan [mailto:hari.kannan@citrix.com]
> >>Sent: Wednesday, February 27, 2013 8:21 PM
> >>To: cloudstack-dev@incubator.apache.org
> >>Subject: RE: HA question
> >>
> >>Hi Kelsey,
> >>
> >>HA is at 2 levels ­ VMs can be marked HA. In addition, you can mark some
> >>hosts as reserved for ³Dedicated² HA hosts. Quoting from the manual, the
> >>dedicated HA option is set through a special host tag when the host is
> >>created.
> >>To allow the administrator to dedicate hosts to only HA-enabled VMs, set
> >>the
> >>global configuration variable ha.tag to the desired tag (for example,
> >>"ha_host"), and restart the Management Server. Enter the value in the
> >>Host
> >>Tags field when adding the host(s) that you want to dedicate to
> >>HA-enabled
> >>VMs.
> >>
> >>Hari
> >>
> >>From: Kelcey Damage (BT) [mailto:kelcey@backbonetechnology.com]
> >>Sent: Wednesday, February 27, 2013 8:00 PM
> >>To: CloudStack dev list
> >>Subject: RE: HA question
> >>
> >>Hi,
> >>
> >>I can¹t remember, do we enable HA on a per host basis, or on a per
> >>cluster
> >>basis?
> >>
> >>Thanks.
> >>
> >>[cid:image001.png@01CE1524.FA0D61B0]Kelcey Damage Infrastructure
> >>Systems Architect
> >>www.backbonetechnology.com<http://www.backbonetechnology.com/>
> >>-------------------------------------------------------------------------
> >>kelcey@backbonetechnology.com<mailto:kelcey@backbonetechnology.com
> >>>
> >>
> >>address: 55 East 7th Ave, Vancouver, BC, V5T 1M4
> >>tel: +1 604 713 8560 ext:114
> >>fax: +1 604 605 0964
> >>skype: kelcey.damage
> >>
> >
> >


Mime
View raw message