Skip to content

Instantly share code, notes, and snippets.

@kevteljeur
Forked from tensorfields/virt-addr.sh
Last active January 21, 2018 00:56
Show Gist options
  • Save kevteljeur/ad73ca9ca0cfe8f14458 to your computer and use it in GitHub Desktop.
Save kevteljeur/ad73ca9ca0cfe8f14458 to your computer and use it in GitHub Desktop.
Get a KVM guest's IP address
#!/bin/bash
# Returns the IP address of a running KVM guest VM
# Assumes a working KVM/libvirt environment
#
# Install:
# Add this bash function to your ~/.bashrc and `source ~/.bashrc`.
# Usage:
# $ virt-addr vm-name
# 192.0.2.16
#
# virt-addr() {
# VM="$1"
# arp -an | grep "`virsh dumpxml $VM | grep "mac address" | sed "s/.*'\(.*\)'.*/\1/g"`" | awk '{ gsub(/[\(\)]/,"",$2); print $2 }'
# }
virt-addr() {
VM="$1"
search=$( virsh dumpxml $VM | grep "mac address" | sed "s/.*'\(.*\)'.*/\1/g")
address=$(arp -an | grep "$search" | awk '{ gsub(/[\(\)]/,"",$2); print $2 }')
if [[ -z "$address" ]]; then
echo "-"
else
echo "$address"
fi
}
virt-addrs() {
echo "----------------------------------------------";
printf "%-30s %s\n" "VM Name" "IP Address";
virsh -c qemu:///system list --all | grep -o '[0-9]* [a-z]*.*running' | while read -r line;
do
line_cropped=$(echo "$line" | sed 's/[0-9][ ]*\([-._0-9a-zA-Z]*\)[ ]*running/\1/' );
printf "%-30s %s\n" "$line_cropped" $( virt-addr "$line_cropped" );
done;
echo "----------------------------------------------";
}
virt-uuid() {
VM="$1"
uuid=$(echo $2 | grep "<uuid" | sed "s/.*<uuid>\(.*\)<\/uuid>.*/\1/g" );
echo $uuid
}
virt-mem() {
VM="$1"
mem=$(echo $2 | grep "<memory" | sed "s/.*<memory unit='KiB'>\(.*\)<\/memory>.*/\1/g" );
echo "$( expr $mem / 1024 )mb"
}
virt-currmem() {
VM="$1"
mem=$(echo $2 | grep "<currentMemory" | sed "s/.*<currentMemory unit='KiB'>\(.*\)<\/currentMemory>.*/\1/g" );
echo "$( expr $mem / 1024 )mb"
}
virt-vcpu() {
VM="$1"
vcpu=$(echo $2 | grep "<vcpu" | sed "s/.*<vcpu[^>]*>\(.*\)<\/vcpu>.*/\1/g" );
echo $vcpu
}
virt-store() {
VM="$1"
}
virt-info() {
echo "------------------------------------------------------------------------------------------------------------------------";
printf "%-30s%-17s%-12s%-12s%-8s%-40s\n" "VM Name" "IP Address" "Memory" "Current" "VCPUs" "UUID";
virsh -c qemu:///system list --all | grep -o -E '[-]?[0-9]* [-._0-9a-zA-Z]+.*(running|shut off)' | while read -r line;
do
line_cropped=$(echo "$line" | sed -r 's/([-]|[0-9]+)[ ]+([-._0-9a-zA-Z]*)[ ]+(running|shut off)/\2/' );
vmsource=$(virsh dumpxml $line_cropped)
printf "%-30s%-17s%-12s%-12s%-8s%-40s\n" "$line_cropped" $( virt-addr "$line_cropped" "$vmsource" ) $( virt-mem "$line_cropped" "$vmsource" ) $( virt-currmem "$line_cropped" "$vmsource" ) $( virt-vcpu "$line_cropped" "$vmsource" ) $( virt-uuid "$line_cropped" "$vmsource" );
done;
echo "------------------------------------------------------------------------------------------------------------------------";
}
@rbellamy
Copy link

Also, putting this at the top of your script allows you to use bare virsh commands:

export LIBVIRT_DEFAULT_URI=qemu:///system

@asalles
Copy link

asalles commented Jun 7, 2017

line 29: `virt-addr': not a valid identifier
What I'm doing wrong? reserved name function?

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment