Hello,
I want that since the beginning. XEN Center has it, I think VMware
too...
There is two problems to solve to be right :
- Where migrating the VMs (this should work even without HA set up)
- Remember where the VMs were, to migrate them back after the node come
back
That's why I thing it is not so simple.
What I personally do, is a "for" loop on the node I want to bring down.
For example :
List the running VMs (and keep it somewhere to bring them back) :
# vzlist
CTID NPROC STATUS IP_ADDR HOSTNAME
100 35 running 172.20.1.157 vmlxcap024.xxx
101 72 running 172.20.1.163 vmlxcap030.xxx
# qm list
...
(I don't have kvm VMs)
# for vm in 100 101; do vzmigrate --live node2 $vm; done
# for vm in 101 102; do qm migrate -online $vm node3 ; done
Something like that.
Le mer. 20 mars 2013 12:01:54 CET, Jonathan Schaeffer a écrit :
Hi all,
is there a recipe (I could'nt find any on the wiki) to live migrate
all the VMs running on one host to the others (no matter where, as
soon as it gets away from here).
I see at least two use cases where this is usefull :
- emergency stop of a physical host
- scheduled downtime for ... lets say upgrade to the new shiy PVE version
I can remember that pacemaker does it with one command "crm_standby -v
true" which is very convenient. Is there something equivalent in PVE ?
cheers,
jonathan
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