[ncolug] Re: vm
- From: "Chuck Stickelman" <CStickelman@xxxxxxxx>
- To: <ncolug@xxxxxxxxxxxxx>
- Date: Fri, 23 Nov 2007 10:31:28 -0500
What do you want to trigger it?
The Linux Hypervisor could run the apcd daemon and initiate the shutdown when
the UPS's batteries are low...
Chuck
-----Original Message-----
From: "larry" <larry@xxxxxxxxxxxx>
To: "ncolug@xxxxxxxxxxxxx" <ncolug@xxxxxxxxxxxxx>
Sent: 11/23/2007 9:56 AM
Subject: [ncolug] Re: vm
Very nice. But essentially this is just a shutdown command. What will
trigger it to run?
Jim Willeke wrote:
> For VMWare this script should work.
>
> #####################################################################
> #!/bin/sh
> #
> # UPS shutdown script for VMware ESX 3.0
> #
> #####################################################################
> # set the paths that the vmware tools need
> PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin"
>
>
> #####################################################################
> # try do a nice shutdown of VM there is power
> count_vm_on=0
> for vm in `vmware-cmd -l` ; do
> #echo "VM: " $vm
> for VMstate in `vmware-cmd "$vm" getstate` ; do
> #echo $VMstate
>
> # If the VM is power ON
> if [ $VMstate = "on" ] ; then
> echo " "
> echo "VM: " $vm
> echo "State: is on and will now tell it to shut down"
> echo "Shutting down: " $vm
> vmware-cmd "$vm" stop trysoft
> vmwarecmd_exitcode=$(expr $?)
> if [ $vmwarecmd_exitcode -ne 0 ] ; then
> echo "exitcode: $vmwarecmd_exitcode so will now turn it off hard"
> vmware-cmd "$vm" stop hard
> fi
> count_vm_on=$count_vm_on+1
> sleep 2
> # if the VM is power OFF
> elif [ $VMstate = "off" ] ; then
> echo " "
> echo "VM: " $vm
> echo "State: is off, so i skip it"
> # if the VM is power suspended
> elif [ $VMstate = "suspended" ] ; then
> echo " "
> echo "VM: " $vm
> echo "State: is suspended, so i skip it"
> # if state is getstate or =
> else
> printf ""
> #echo "unknown state: " $VMstate
> fi
>
> done
> done
>
>
> ########################################################################
> # wait for up to 5 min for the VM to shutd
> #
> if [ $count_vm_on = 0 ] ; then
> echo " "
> echo "All VM is off or suspended"
> else
> echo " "
> vm_time_out=300
> count_vm_on=0
> echo "Waiting for VMware virtual machines."
> for (( second=0; second<$vm_time_out; second=second+5 )); do
> sleep 5
> printf "."
> count_vm_on=0
> for vm in `vmware-cmd -l` ; do
> for VMstate in `vmware-cmd "$vm" getstate` ; do
> if [ $VMstate = "on" ] ; then
> count_vm_on=$(expr $count_vm_on + 1)
> fi
> done
> done
> if [ $count_vm_on = 0 ] ; then
> #echo "exit for"
> break
> fi
> done
> #echo $VMstate
> fi
> #echo $count_vm_on
>
>
> #####################################################################
> # checking if all the VM are off and if not then turn them off
> for vm in `vmware-cmd -l` ; do
> #echo "VM: " $vm
> for VMstate in `vmware-cmd "$vm" getstate` ; do
> # If the VM is power ON
> if [ $VMstate = "on" ] ; then
> echo " "
> echo "Found this VM: " $vm
> echo "it is stille on but now i will turn it off"
> vmware-cmd "$vm" stop hard
> sleep 2
> fi
> done
> done
> #####################################################################
> # Will now shutdown the ESX server as all VM are now off
> echo " "
> echo "now all VM is down, so will shutdown ESX host now"
> echo " "
> shutdown -h now
>
>
> -jim
> Phone: 419.564.7692
> Email: jim@xxxxxxxxxxx
> IM: jim@xxxxxxxxxxx (on MSN)
> IM: jwilleke@xxxxxxxxx (on GOOGLE)
> IM: jwilleke (on Yahoo)
> IM: jeemster (on AIM)
> My LinkedIn: http://www.linkedin.com/in/jwilleke
>
>
> larry wrote:
>> No, the guests do NOT "shut down cleanly" just because you stopped or
>> shut down the hypervisor.
>>
>> You want to talk about "standards" in regard to UPS signaling
>> behaviour?! Which of the dozen or so standards would you like to
>> discuss?
>>
>> Mike wrote:
>>> Chuck Stickelman wrote:
>>>> So what I hear you say is:
>>>> Hook the UPS to the physical machine
>>>> Have the host OS monitor the UPS's state
>>>> When the UPS signals the host it sends a SIGHUP to the Virtual
>>>> Machines
>>>> The VMs should then interpret the SIGHUP as a Shutdown command
>>>>
>>>> Is that what you had in mnd?
>>>>
>>>> Does anyone know if that's how it works?
>>>>
>>>> Chuck
>>>
>>> Yes.
>>>
>>> The signal may depend on the VM design though. I would hope they
>>> have used enough sense to honor some standard.
>>>
>>> This really is a near trivial problem. The guests shutdown cleanly
>>> during a normal shutdown, yes? Why should a shutdown instituted by
>>> UPS software or even admin written (monitoring) scripts be any
>>> different?
>>>
>>> Mike
>>>
>>> To unsubscribe send to ncolug-request@xxxxxxxxxxxxx with
>>> 'unsubscribe' in the Subject field.
>>>
>>>
>>
--
"Perception is strong and sight weak. In strategy it is
important to see distant things as if they were close and
to take a distanced view of close things."
Miyamoto Musashi (1584-1645)
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