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--- windows_vm_in_kvm_on_headless_ubuntu_server [23.01.2016 15:59] – Pascal Suter
+++ windows_vm_in_kvm_on_headless_ubuntu_server [23.01.2016 17:10] – Pascal Suter
@@ Line 19: / Line 19: @@
 now connect with your favourite vnc client to the ip of your server and install windows. you need to load the derivers from the second cdrom that is emulated. make sure you choose the correct virtio storage driver for your windows version. it may load the wrong one if you just select the root directory and let the installer search for it, resulting in an unstable windows vm
+===== autostart on boot / init script =====
 once the installation is done, shut down your windows vm. it is now time to make it autostart upon boot of your linux machine.. in order to do that i used [[https://github.com/tmartinfr/kvm-simple-init|Thomas Martin's kvm-simple-init]] of which i keep a {{:kvm-simple-init-master.zip|local copy (dated 2016-01-23)}}
+this script will also send a shutdown command to all vms once the server shuts down, so no need to manually do that in order to gracefully shutdown your vm's
+===== bridged network =====
+by default qemu uses nat-ed network, so that the vm is in its own network and the vm host acts as a nat router. if you want your vm to be part of your network like any physical machine you have connected to your swich you can use a bridged connection..
+you need to install bridge-utils to be able to create a bridge network device
+   apt-get install bridge-utils
+now change your ''/etc/network/scripts'' file and basically replace eth0 with br0 and then add three lines for the bridge config. here the end result on mine:
+<code>
+auto br0
+iface br0 inet static
+	address 192.168.168.1
+	netmask 255.255.255.0
+	network 192.168.168.0
+	broadcast 192.168.168.255
+	gateway 192.168.168.254
+	bridge_ports eth0
+	bridge_stp off
+	bridge_maxwait 5
+<code>
+Notice: you won't need any block for eth0 after you defined the bridge interface.
+now either reboot your machine or try to get your eth0 down using ''ifconfig'' and then get br0 up using ''ifup'' however be careful when you are doing this all remoetely!! in that case make really really sure you got your config right or even better, setup a backdoor, make sure your remote management module is accessible, whatever.. and then reboot your server.. and hope :)
+now in your qemu command line you ened to add the parameters
+<code>-net nic -net tap</code>
+the default qemu-ifup script in /etc/ will do the rest for you.
+==== example config ====
+here is an example configuration for a windows 7 machine using the above mentioned init script.. if you use another init script or run kvm manually you can simply use all the cli options listed below as an example of what you might want to pass on to qemu.. also take a look at the man page it is very informative and helpful!
+<code>
+# Should be unique among all VMs
+MONITOR_PORT=5801
+# Not mandatory, but useful to keep it in a distinct variable
+VNC_DISPLAY=1
+# KVM parameters
+KVM_OPTS="\
+-enable-kvm \
+-k de-ch \
+-name windows \
+-drive file=/vm/windows.img,if=virtio,format=raw,index=0 \
+-m 4096 \
+-net nic \
+-net tap \
+-vnc :$VNC_DISPLAY \
+-monitor tcp:127.0.0.1:$MONITOR_PORT,server,nowait \
+-monitor vc \
+-daemonize \
+</code>