我在Ubuntu 10.04上使用Eucalyptus来build立私有云。 有时我不能SSH入虚拟机实例，我希望能够直接连接到VM实例的控制台。 但是，默认情况下，这似乎并没有通过virsh：
$ sudo virsh -c qemu:///system console i-486B085E No console available for domain 有没有办法启用它，例如，通过改变Eucalyptus生成传递给libvirt的XML文件的方式？
这是Eucalyptus生成的libvirt.xml文件：
$ cat /var/lib/eucalyptus/instances/admin/i-486B085E/libvirt.xml <domain type='kvm'> <name>i-486B085E</name> <os> <type>hvm</type> <kernel>/var/lib/eucalyptus/instances//admin/i-486B085E/kernel</kernel> <initrd>/var/lib/eucalyptus/instances//admin/i-486B085E/ramdisk</initrd> <cmdline>root=/dev/sda1 console=ttyS0</cmdline> </os> <features> <acpi/> </features> <memory>262144</memory> <vcpu>1</vcpu> <devices> <disk type='file'> <source file='/var/lib/eucalyptus/instances//admin/i-486B085E/disk'/> <target dev='sda'/> </disk> <interface type='bridge'> <source bridge='eucabr10'/> <mac address='d0:0d:48:6B:08:5E'/> <model type='e1000'/> </interface> <serial type="file"> <source path='/var/lib/eucalyptus/instances//admin/i-486B085E/console.log'/> <target port='1'/> </serial> </devices> </domain>
这是virsh dumpxml的输出：
$ sudo virsh dumpxml i-486B085E <domain type='kvm' id='3'> <name>i-486B085E</name> <uuid>3b762376-4de1-f6ac-7327-9df520fa4862</uuid> <memory>262144</memory> <currentMemory>262144</currentMemory> <vcpu>1</vcpu> <os> <type arch='x86_64' machine='pc-0.12'>hvm</type> <kernel>/var/lib/eucalyptus/instances//admin/i-486B085E/kernel</kernel> <initrd>/var/lib/eucalyptus/instances//admin/i-486B085E/ramdisk</initrd> <cmdline>root=/dev/sda1 console=ttyS0</cmdline> <boot dev='hd'/> </os> <features> <acpi/> </features> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>destroy</on_crash> <devices> <emulator>/usr/bin/kvm</emulator> <disk type='file' device='disk'> <source file='/var/lib/eucalyptus/instances//admin/i-486B085E/disk'/> <target dev='sda' bus='scsi'/> </disk> <interface type='bridge'> <mac address='d0:0d:48:6b:08:5e'/> <source bridge='eucabr10'/> <target dev='vnet0'/> <model type='e1000'/> </interface> <serial type='file'> <source path='/var/lib/eucalyptus/instances//admin/i-486B085E/console.log'/> <target port='0'/> </serial> <console type='file'> <source path='/var/lib/eucalyptus/instances//admin/i-486B085E/console.log'/> <target port='0'/> </console> </devices> <seclabel type='dynamic' model='apparmor'> <label>libvirt-3b762376-4de1-f6ac-7327-9df520fa4862</label> <imagelabel>libvirt-3b762376-4de1-f6ac-7327-9df520fa4862</imagelabel> </seclabel> </domain>
以下是完整的KVM命令行，最终被调用：
/usr/bin/kvm -S -M pc-0.12 -enable-kvm -m 256 -smp 1 -name i-486B085E -uuid 3b762376-4de1-f6ac-7327-9df520fa4862 -nographic -chardev socket,id=monitor,path=/var/lib/libvirt/qemu/i-486B085E.monitor,server,nowait -monitor chardev:monitor -boot c -kernel /var/lib/eucalyptus/instances//admin/i-486B085E/kernel -initrd /var/lib/eucalyptus/instances//admin/i-486B085E/ramdisk -append root=/dev/sda1 console=ttyS0 -drive file=/var/lib/eucalyptus/instances//admin/i-486B085E/disk,if=scsi,index=0,boot=on -net nic,macaddr=d0:0d:48:6b:08:5e,vlan=0,model=e1000,name=e1000.0 -net tap,fd=55,vlan=0,name=tap.0 -chardev file,id=serial0,path=/var/lib/eucalyptus/instances//admin/i-486B085E/console.log -serial chardev:serial0 -parallel none -usb
看起来这是随着Eucalyptus 3及更高版本的出现而改变的 – 这是一个更新的解决scheme，可以拯救我今天上午经历的任何恶化。
使用这两个链接中的信息组合： http : //gobertelli.blogspot.co.uk/2012/08/customize-instance-libvirt-environment.html https://www.redhat.com/archives/libvirt-用户/ 2012-月/ msg00048.html
在您的节点控制器上，编辑/etc/eucalyptus/libvirt.xsl，使其看起来像这样：
<xsl:choose> <xsl:when test="(/instance/hypervisor/@type = 'kvm' or /instance/hypervisor/@type = 'qemu')"> <serial type="pty"> <target port="0"/> </serial> </xsl:when> <xsl:when test="/instance/hypervisor/@type = 'xen' and /instance/os/@platform = 'windows'"> <serial type="pty"> <source path="/dev/pts/3"/> <target port="0"/> </serial> <input type="tablet" bus="usb"/> <input type="mouse" bus="ps2"/> </xsl:when> <xsl:when test="/instance/hypervisor/@type = 'xen' and /instance/backing/root/@type = 'ebs'"> <console type="pty"/> <target port="0"/> </xsl:when> </xsl:choose> <!-- <graphics type='vnc' port='-1' autoport='yes' keymap='en-us' --> </devices> </domain> </xsl:template>
将串行和控制台定义更改为键入“pty”和目标“0”。
停止并启动任何正在运行的虚拟机，然后像往常一样，您应该能够'virsh console'进入它们。
我想通了…你需要编辑/ usr / share / eucalyptus / gen_kvm_libvirt_xml文件。 这是差异：
--- /usr/share/eucalyptus/gen_kvm_libvirt_xml.bak 2010-09-28 14:54:20.259266161 -0400 +++ /usr/share/eucalyptus/gen_kvm_libvirt_xml 2010-09-28 15:01:25.269265897 -0400 @@ -109,9 +109,9 @@ <mac address='PRIVMACADDR'/> <model type='e1000'/> </interface> - <serial type="file"> - <source path='BASEPATH/console.log'/> - <target port='1'/> + <serial type='pty'> + <source path='/dev/pts/2'/> + <target port='0'/> </serial> </devices> </domain>