KVM虚拟化笔记------kvm虚拟化环境安装

Posted 2020-06-13

在安装虚拟化环境的时候，首先查看下该服务器的硬件配置和环境，具体操作如下：

(一)检查硬件的相关情况：

  1，查看cpu型号，物理cpu颗数,

[[email protected] ~]#  cat /proc/cpuinfo | grep name | cut -d: -f2 | uniq -c
      2  Intel(R) Core(TM) i3-4150 CPU @ 3.50GHz
[[email protected] ~]# cat /proc/cpuinfo | grep physical | sort -n | uniq -c
      2 address sizes   : 42 bits physical, 48 bits virtual
     16 physical id     : 0             ###说明有一颗cpu,颗数是从0开始的

  2，查看内存

[[email protected] ~]# dmidecode|grep -A5 "Memory Device"|grep Size | cut -d: -f2 | sort -n | uniq -c
     63  No Module Installed
     63  1 kB
      1  8 GB     
      1  8192 MB                          ###接了一根内存，每根内存的大小为8G

  3，查看其它的相关参数:

[[email protected] ~]# dmidecode  | grep -A16 "Memory Device" | grep Speed | sort -n | uniq -c
     64         Speed: Unknown
[[email protected] ~]# dmidecode|grep  ‘Maximum Capacity‘
        Maximum Capacity: 1 TB
[[email protected] ~]#

（二）安装kvm

1，查看服务器是否支持虚拟化

[[email protected] ~]# grep -E -o ‘vmx|svm‘ /proc/cpuinfo

vmx

2，安装kvm软件包

[[email protected] ~]# yum -y install kvm python-virtinst libvirt tunctl bridge-utils virt-manager qemu-kvm-tools virt-viewer  virt-v2v

3，安装kvm虚拟化管理工具包

[[email protected] ~]# yum install  libguestfs-tools -y

4，查看虚拟机的相关环境

[[email protected] ~]# /etc/init.d/libvirtd restart
Stopping libvirtd daemon:                                  [  OK  ]
Starting libvirtd daemon:                                  [  OK  ]
[[email protected] ~]# virsh -c qemu:///system list
 Id    Name                           State
----------------------------------------------------
 1     hadoop4                        running

[[email protected] ~]# virsh --version              ###查看虚拟机的版本
0.10.2
[[email protected] ~]# virt-install --version       ###查看虚拟机工具的版本
0.600.0
[[email protected] ~]# ln -s /usr/libexec/qemu-kvm /usr/bin/qemu-kvm
[[email protected] ~]# qemu-kvm -version            
QEMU PC emulator version 0.12.1 (qemu-kvm-0.12.1.2-2.479.el6_7.3), Copyright (c) 2003-2008 Fabrice Bellard
[[email protected] ~]#

 5，手动创建虚拟网桥：

a,首先NetworkManager服务：

[[email protected] network-scripts]# /etc/init.d/NetworkManager status

NetworkManager (pid  1132) is running...

[[email protected] network-scripts]# /etc/init.d/NetworkManager stop

Stopping NetworkManager daemon:                            [  OK  ]

[[email protected] network-scripts]# /etc/init.d/NetworkManager status

NetworkManager is stopped

[[email protected] network-scripts]# chkconfig NetworkManager off

b,创建br0网桥：

[[email protected] network-scripts]# cp ifcfg-eth0 ifcfg-br0
[[email protected] network-scripts]# vi ifcfg-eth0 

DEVICE=eth0
HWADDR=00:0C:29:75:92:CF
TYPE=Ethernet
ONBOOT=yes
NM_CONTROLLED=no
BOOTPROTO=static
BRIDGE=br0
DEFROUTE=yes
NAME=Systemeth0
IPADDR=10.1.156.200
NETMASK=255.255.255.0
GATEWAY=10.1.156.1
DNS1=10.1.156.1

[[email protected] network-scripts]# vi ifcfg-br0 

UUID=c12c5da8-e4dd-43e0-a5cb-2c5491d68aff
DEVICE=br0                                 ###修改为:br0
HWADDR=00:0C:29:75:92:CF                   ###不变
TYPE=Bridge                                ###把Ethernet变成Bridge
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO=static
IPADDR=10.1.156.201                        ###修改下ip
NETMASK=255.255.255.0
GATEWAY=10.1.156.1
DNS1=10.1.156.1

    

c，关闭了networkmanager服务之后，才能通过service networkrestart管理网络

本文出自 “清风明月” 博客，请务必保留此出处http://liqingbiao.blog.51cto.com/3044896/1740516