====== CentOS6 KVM 使用 console 模式建立 VM ======
之前都透過 X Win 下的 virt-manager 來建立 VM , 當無法啟用 X Win 的環境下, 就需要透過文字命令模式建立 VM
  * 環境 Host : CentOS 6.8 x86_64
  * 預計建立 Guest : CentOS 7 x86_64 

===== 建立 VM 程序 =====
  * 預計建立 ever-test-3 , 1 vCPU/1G RAM/20G HD , CDROM:/home/ISO/CentOS-7-x86_64-Minimal-1511.iso , 有兩個網卡分別接上 host 的 br0 與 br1 
  * 先建立 20G Disk Image file 在 /kvm/image/ever-test-3.qcow2<code sh>
qemu-img create -f qcow2 -o preallocation=off /kvm/image/ever-test-3.qcow2 20G
</code><file>
[root@HP-ML10G9 ~]# qemu-img create -f qcow2 -o preallocation=off /kvm/image/ever-test-3.qcow2 20G
Formatting '/kvm/image/ever-test-3.qcow2', fmt=qcow2 size=21474836480 encryption=off cluster_size=65536 preallocation='off'
[root@HP-ML10G9 ~]# ls -lt /kvm/image/ever-test-3.qcow2
-rw-r--r-- 1 root root 197120 2016-11-08 09:18 /kvm/image/ever-test-3.qcow2
</file>
  * 建立 VM 與光碟安裝 CentOS 7<code sh>
virt-install --name ever-test-3 --vcpu 1 --ram 1024 --os-type linux --disk /kvm/image/ever-test-3.qcow2,device=disk,bus=virtio,format=qcow2,size=20 --network bridge:br0 --network bridge:br1 --cdrom /home/ISO/CentOS-7-x86_64-Minimal-1511.iso 
</code>{{:tech:kvm-install-01.png}}
  * 按下 [tab] 增加 linux kernel 開機參數 console=ttyS0,115200 \\ {{:tech:kvm-install-02.png}}
  * 進入 CentOS7 光碟安裝程序 \\ {{:tech:kvm-install-03.png?750}}
++++ 其他安裝畫面 |
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<note>
  * 過程中如果要離開 console 模式可以在鍵盤上按下 <code>CTRL + ]</code> 或是 <code>CTRL + 5</code>
</note>

===== 參考網址 =====
  * https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Virtualization_Deployment_and_Administration_Guide/sect-Troubleshooting-Common_libvirt_errors_and_troubleshooting.html
  * https://superuser.com/questions/637669/how-to-exit-a-virsh-console-connection
===== 相關網址 =====
{{topic>linux-kvm}}

{{tag>linux-kvm console linux}}