Sorry, I forgot to mentions it, Yes I have this configuration two failover domain, first with host-1 on top, and other with host-2 on top.
My question is, how you guys are configuring your guests resources to failover from on hosts to another, remembering that I have same machines on two kvm hosts, i.e. kvm001 has guest001 on, and kvmsrv002 has guest001 ( It must be powered on just in fail of guest0001 on kvm001) I hope being clear enough. Thank you so much. - - iarlyy selbir :wq! On Fri, Jan 14, 2011 at 3:18 PM, Thomas Sjolshagen <[email protected]>wrote: > On Fri, 14 Jan 2011 14:19:52 -0300, iarly selbir <[email protected]> wrote: > > Hi there, > Hi I'm joining today an would like to share my knowledge with > virtualization and get more = ) > when KVM-HOST-001 fail, the KVM-HOST-002 take over all machines from > other host, I'm sharing a storage volume between two nodes (gfs2), so all > hosts can see the guest images, but how to configure the clusters resources > to migrate the guests? this is my question and any suggestions will be > appreciated. > > Assuming you're using libvirt to manage the VM's (guests), I'd configure > them as <vm> resources in rgmanager and make them members of a failover > group with the highest (shows up as the lowest priority number in the > example) priority to the KVM-HOST-* you want the guest to start on (if it's > available). > A couple of (example) <vm> resource I have configured in my 2-node GFS2 > based KVM cluster (some of the info in the vm resource tag is actually not > necessary, but I was both experimenting and playing it safe when I set this > up) > <rm> > <failoverdomains> > <failoverdomain name="prefer-virt0" restricted="0" > ordered="1"> > <failoverdomainnode name="virt0-backup" > priority="10" /> > <failoverdomainnode name="virt1-backup" > priority="20" /> > </failoverdomain> > <failoverdomain name="prefer-virt1" restricted="0" > ordered="1"> > <failoverdomainnode name="virt1-backup" > priority="10" /> > <failoverdomainnode name="virt0-backup" > priority="20" /> > </failoverdomain> > </failoverdomains> > <!-- VM resources --> > <vm name="imap1" autostart="1" recovery="restart" migrate="live" > domain="prefer-virt0" use_virsh="1" hypervisor="qemu" /> > <vm name="imap2" autostart="1" recovery="restart" migrate="live" > domain="prefer-virt1" use_virsh="1" hypervisor="qemu" /> > </rm> > Hope this helps to illustrate. > // Thomas >
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