[ncolug] Re: vm
- From: "Chuck Stickelman" <CStickelman@xxxxxxxx>
- To: <ncolug@xxxxxxxxxxxxx>
- Date: Fri, 23 Nov 2007 11:13:58 -0500
Yes. The apcd daemon - and the other UPS monitoring daemons - actually monitor
the state of one or more UPSs.
It's even better than that! They actually do *something* useful w/ that state
information. (Like shuting down the system...)
I think you'll be disapointed with a UPS-monitor's check-balancing ability.
Though I've heard that both functions could be handled by emacs...
Chuck
-----Original Message-----
From: "larry" <larry@xxxxxxxxxxxx>
To: "ncolug@xxxxxxxxxxxxx" <ncolug@xxxxxxxxxxxxx>
Sent: 11/23/2007 10:44 AM
Subject: [ncolug] Re: vm
Yes, it could. Does it?
It could also balance my checkbook.
Chuck Stickelman wrote:
> 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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