Shell script: Do not log on to the KVM virtual machine, modify the virtual machine NIC IP address

# Author: The Adventures of Tintin (Jacob)

# The script uses the Guestmount tool, Centos7.2 installed libguestfs-tools-c can get Guestmount tool

# The script modifies the virtual machine's IP address information without logging on to the virtual machine

# In some environments, the virtual machine does not have an IP or IP address and the real host is not in a network segment

# Real host in the absence of Virt-mange graphics, remote connection of virtual machines is cumbersome

# This script can solve a similar problem

#!/bin/bash#author: The Adventures of Tintin (Jacob) #该脚本使用guestmount工具, Centos7.2 install libguestfs-tools-c can get Guestmount tool # Script without logging on to the virtual machine, To modify the virtual machine's IP address information # In some environments, virtual machines do not have IP or IP addresses and real hosts are not in a network segment # Real hosts in the absence of Virt-mange graphics, remote connection to the virtual machine is cumbersome # The script can solve a similar problem read -p  " Please enter the name of the virtual machine: " nameif virsh domstate  $name |grep -q running ;then        echo  "To modify virtual machine NIC data, you need to shut down the virtual machine"        virsh  destroy  $namefimountpoint = "/media/virtimage" [ ! -d  $mountpoint]&& mkdir   $mountpointecho   "Please later ..." if mount | grep -q "$mountpoint"  ;then        umount  $mountpointfiguestmount   -d  $name  -i $ mountpointread -p  "Please enter the name of the network adapter that needs to be modified:" devread -p  "Please enter the IP address:"  addr# determine if there is an IP address in the NIC configuration file, Just modify the IP, no, add a new IP address if grep -q "ipaddr"    $mountpoint/etc/sysconfig/network-scripts/ifcfg-$ Dev;then   sed -i  "/ipaddr/s/=.*/= $addr/"    $mountpoint/etc/sysconfig/network-scripts/ifcfg-$develse    echo  "Ipaddr= $addr"  >>   $mountpoint/etc/sysconfig/network-scripts/ ifcfg-$devfi # If there is a client-configured IP address in the NIC configuration file, the script prompts to modify IP completion awk -f= -v x= $addr   ' $2==x{print  ' Complete ... "} '   $mountpoint/etc/sysconfig/network-scripts/ifcfg-$dev

This article is from the "Ding Ding Adventures" blog, please be sure to keep this source http://manual.blog.51cto.com/3300438/1961344

Shell script: Do not log on to the KVM virtual machine, modify the virtual machine NIC IP address