Hello all,
I have modified some of my programs that use libxenstat to produce bash
arrays of running VM''s, below is a sample of the output:
root@tower:/root# xm-shdomains
# Xen guest info
# Generated by xm-shdomains
guest_name[0]="Domain-0"
guest_id[0]=0
guest_cpu[0]=40
guest_mem[0]=85
guest_vcpus[0]=2
guest_name[1]="edgy1"
guest_id[1]=6
guest_cpu[1]=0
guest_mem[1]=13
guest_vcpus[1]=1
total_guests=1
# End Xen guest info.
With that output, you can use simple bash scripts to validate a dom-u
as running, dead, whatever, i.e. :
root@tower:/root# ./chkdom edgy1
Domain edgy1 is running.
root@tower:/root# echo $?
0
root@tower:/root# ./chkdom edgy2
Domain edgy2 is not running.
root@tower:/root# echo $?
1
root@tower:/root#
The code (bash) is very simple:
root@tower:/root# cat chkdom
#!/bin/bash
xm-shdomains > /tmp/$$.domains
source /tmp/$$.domains
rm -f /tmp/$$.domains
target="$1"
i=0
while [ $i -le $total_guests ]; do
if [ ${guest_name[i]} = "$target" ]; then
echo "Domain $target is running."
exit 0
fi
let "i += 1"
done
echo "Domain $target is not running."
exit 1
root@tower:/root#
If anyone wants a copy, e-mail me. I need to clean up the XML stuff that
is in other programs in the repo before release.
This is super handy for init scripts and other stuff :)
Soon coming, PHP arrays :)
Best,
--Tim
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