= 2009-03-19 = * 10:30-11:30 主任至中群業務訪談 == Xen VNC == * 基本步驟請參考[wiki:jazz/DRBL_Xen 使用 DRBL 部署 Xen 虛擬叢集] * [備忘] 從 '''xm console''' 跳離的快速鍵為 '''CTRL + ]''' * [狀況] 發現一個小小的問題，xen-tools 其實是採用 dom0 的 kernel 跟 initrd.img，所以 debootstrap 也是拷貝 dom0 的 /lib/modules/。加上如果我們要求 xen-tools 把 domU 的 image 檔案系統改為 reiserfs，而 dom0 自己是使用 ext3，會因為 dom0 initrd.img 沒有加入 reiserfs 的支援而致使 domU 開機時無法掛載 root filesystem。 * 在 Lenny x86_64 上的安裝步驟 {{{ #!sh lenny:~# echo "loop max_loop=255" >> /etc/modules lenny:~# apt-get install xen-hypervisor-3.2-1-amd64 linux-image-2.6.26-1-xen-amd64 xen-tools libc6-xen bridge-utils lsb-release lenny:~# update-grub lenny:~# reboot --------- Boot with "Xen 3.2-1-amd64 / Debian GNU/Linux, kernel 2.6.26-1-xen-amd64" --------- lenny:~# lsb_release -a No LSB modules are available. Distributor ID: Debian Description: Debian GNU/Linux 5.0 (lenny) Release: 5.0 Codename: lenny lenny:~# uname -a Linux lenny 2.6.26-1-xen-amd64 #1 SMP Sat Jan 10 20:39:26 UTC 2009 x86_64 GNU/Linux --------- "Install DRBL, configure DRBL services and client settings" --------- lenny:~# wget http://drbl.nchc.org.tw/GPG-KEY-DRBL lenny:~# apt-key add GPG-KEY-DRBL lenny:~# echo "deb http://free.nchc.org.tw/drbl-core drbl stable" > /etc/apt/sources.list.d/drbl-sources.list lenny:~# apt-get update lenny:~# apt-get install drbl lenny:~# /opt/drbl/sbin/drblsrv -i (... skip ...) *****************************************************. Trying to upgrade some necessary packages if available... *****************************************************. In ayo repository, searching the latest kernel ... The latest kernel in the ayo repository is linux-image-2.6.26-1-openvz-amd64 There are 2 kernels available for clients, which one do you prefer ? [1]: kernel 2.6.26-1-xen-amd64 x86_64 (from this DRBL server) [2]: linux-image-2.6.26-1-openvz-amd64 (from apt repository) [1] (... skip ...) lenny:~# /opt/drbl/sbin/drblpush -i --------- "Configure Xend" --------- lenny:~# vi /etc/xen/xend-config.sxp lenny:~# /etc/init.d/xend restart --------- "Create Xen Image" --------- lenny:~# xen-create-image -dir /home/xen --dist lenny --kernel /boot/vmlinuz-2.6.26-1-xen-amd64 --initrd /boot/initrd.img-2.6.26-1-xen-amd64 --hostname lenny1 --dhcp --mirror http://free.nchc.org.tw/debian --------- "Enable Xen Image VNC ports" --------- lenny:~# echo "vfb = [ 'type=vnc,vnclisten=0.0.0.0,vncdisplay=1' ]" >> /etc/xen/lenny1.cfg lenny:~# xm create lenny1.cfg lenny:~# xm list Name ID Mem VCPUs State Time(s) Domain-0 0 357 1 r----- 106.4 lenny1 3 128 1 -b---- 8.7 lenny:~# netstat -nap Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:5901 0.0.0.0:* LISTEN 2682/qemu-dm }}} {{{ #!diff --- xend-config.sxp.dpkg 2008-03-07 21:20:39.000000000 +0800 +++ xend-config.sxp 2009-03-19 20:25:47.000000000 +0800 @@ -136,7 +136,7 @@ # two fake interfaces per guest domain. To do things like this, write # yourself a wrapper script, and call network-bridge from it, as appropriate. # -(network-script network-dummy) +#(network-script network-dummy) # The script used to control virtual interfaces. This can be overridden on a # per-vif basis when creating a domain or a configuring a new vif. The @@ -151,7 +151,7 @@ # If you are using only one bridge, the vif-bridge script will discover that, # so there is no need to specify it explicitly. # -(vif-script vif-bridge) +#(vif-script vif-bridge) ## Use the following if network traffic is routed, as an alternative to the @@ -162,8 +162,8 @@ ## Use the following if network traffic is routed with NAT, as an alternative # to the settings for bridged networking given above. -#(network-script network-nat) -#(vif-script vif-nat) +(network-script network-nat) +(vif-script vif-nat) # Dom0 will balloon out when needed to free memory for domU. @@ -184,7 +184,7 @@ # The interface for VNC servers to listen on. Defaults # to 127.0.0.1 To restore old 'listen everywhere' behaviour # set this to 0.0.0.0 -#(vnc-listen '127.0.0.1') +(vnc-listen '0.0.0.0') # The default password for VNC console on HVM domain. # Empty string is no authentication. }}}