I have started playing around with the command line tools on
the ESXi box.
In this post I am going to try and figure out if I can list
the snapshots per VM, figure out the last snapshot taken of a VM, and take a
new Snapshot of a VM.
Snapshots
First get a list of all the VMs on your ESXi box and their
VMIDs.
|
> vim-cmd
vmsvc/getallvms | awk '{printf("%-5s%-30s\n",$1,$2)}'
|
I am going to just look at one VM the one with VMID = 34
List all the snapshots of a VM
List all the snapshots
for a VM
|
> vim-cmd
vmsvc/snapshot.get 34
|
Get the Epoch Time of the last Snapshot
This one liner gets a
little more complicated. I want to get
the timestamps for all the snapshots, then convert the time to epoch, then sort
it in reverse order and grab the first (most recent snapshot)
|
> vim-cmd
vmsvc/snapshot.get 34
| grep "Snapshot Created" | awk '{split ($5,a,"/"); print
a[3] "-" a[1] "-" a[2] "-" $6}' | while read i; do date +"%s" -d
$i; done | sort -r | head -n 1
|
Let me double check to
make sure this lines up right. My newest
snapshot was made on 3/27/2015 00:19:42 UTC time
Looks good!
How many days old is the last snapshot?
|
> vim-cmd
vmsvc/snapshot.get 34 | grep "Snapshot Created" | awk '{split
($5,a,"/"); print a[3] "-" a[1] "-" a[2]
"-" $6}' | while read i; do
epoch=`date +"%s" -d $i`; num=`date +"%s"`; sum=`expr
$num - $epoch)`; days=`expr $sum / 86400`;echo $days; done |sort | head -n 1
|
My last snapshot is 2
days old (but not quite 3)
Shutdown VM 34 and take a new snapshot
I like to take snapshots
of shutdown VMs, I thought I would figure out how to automate this process via
the command line.
|
> vim-cmd
vmsvc/power.off 34
> vim-cmd vmsvc/snapshot.create
34 "SnapShot For Blog"
> vim-cmd
vmsvc/power.on 34
|
Looking at my snapshots from vSphere I can see it did take a
snapshot
If I check how many days since my last snapshot was taken
|
> vim-cmd
vmsvc/snapshot.get 34 | grep "Snapshot Created" | awk '{split
($5,a,"/"); print a[3] "-" a[1] "-" a[2]
"-" $6}' | while read i; do
epoch=`date +"%s" -d $i`; num=`date +"%s"`; sum=`expr
$num - $epoch)`; days=`expr $sum / 86400`;echo $days; done |sort | head -n 1
|
I get back 0, as expected (since I just made this snapshot).
Removing Snapshots
There is a snapshot.remove command. Let me see how it works.
First list all the
snapshots for a VM
|
> vim-cmd vmsvc/snapshot.get
34
|
I am going to remove
this snapshot, number 4. To remove it
from VMID 34 run this command.
|
> vim-cmd
vmsvc/snapshot.remove 34
4
|
It took a few moments, but it removed it then listed all the
current snapshots.
References
[1] Epochtime converter
Accessed 3/2015
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