Erster Eintrag auf meinem (selbstgeschriebenem) Blogsystem.

Requirements

• Webserver
• XenServer ISO (http://downloadns.citrix.com.edgesuite.net/11616/XenServer-7.0.0-main.iso)

At first install a minimal OS (ie. Debian/Ubuntu) on your Dedibox. When the installation is finished, log into this server and take a note of the network configuration. You will need the IP, Gateway and Subnet mask.

Download and Unzip XenServer ISO

wget http://downloadns.citrix.com.edgesuite.net/11616/XenServer-7.0.0-main.iso
mount -o loop XenServer-7.0.0-main.iso /mnt/xen
cp -a /mnt/xen /var/www

Generate Answerfile

Here is an example of a Answerfile for XenServer 7.

Make sure to double check your IP, Gateway and Subnet mask, otherwise you won't be able to contact your server after the installation.

<installation mode="fresh" srtype="lvm">
	<primary-disk gueststorage="yes">sda</primary-disk>
	<keymap>de</keymap>
	<hostname>xenserver7</hostname>
	<root-password>supersecure</root-password>
	<source type ="url">http://x.x.x.x/xen/</source>
	<!-- No Post install scripts configured -->
	<admin-interface name="eth0" proto="static">
		<ip>x</ip>
		<subnet-mask>x</subnet-mask>
		<gateway>x</gateway>
	</admin-interface>
	<nameserver>8.8.8.8</nameserver>
	<nameserver>8.8.4.4</nameserver>
	<timezone>Europe/Berlin</timezone>
	<time-config-method>ntp</time-config-method>
	<ntp-servers>ntp</ntp-servers>
	<ntpservers>0.de.pool.ntp.org</ntpservers>
	<ntpservers>1.de.pool.ntp.org</ntpservers>
	<ntpservers>2.de.pool.ntp.org</ntpservers>
</installation>

Copy the Answerfile into the root of the extracted ISO (in our case /var/www/xen/xenserver.xml).

Preparations for PXE boot on Dedibox

On your Dedibox download some files which are needed for the installation.

cd /boot
wget http://your-webserver.com/xen/install.img
wget http://your-webserver.com/xen/boot/vmlinuz
wget http://your-webserver.com/xen/boot/xen.gz

Now customize your grub.cfg, it should look like this:

menuentry 'Debian GNU/Linux' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-444013cc-90fd-4603-8fff-27f166e9f156' {
	load_video
	insmod gzio
	if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
	insmod part_msdos
	insmod ext2
	if [ x$feature_platform_search_hint = xy ]; then
	  search --no-floppy --fs-uuid --set=root  444013cc-90fd-4603-8fff-27f166e9f156
	else
	  search --no-floppy --fs-uuid --set=root 444013cc-90fd-4603-8fff-27f166e9f156
	fi
	multiboot /xen.gz dom0_mem=1024M acpi=off nosmp noirqbalance
	module /vmlinuz answerfile=http://<IP of the remote server>/xen/xenserver.xml install
	module /install.img
}

Note: you need to insert an IP address, so watch out when using virtual hosts.

Reboot

Now reboot your server, the installation should start after a few minutes.

You can check your webserver log i.e. via tail -f /var/log/nginx/access.log and if you see something like this the installation should have started.

163.172.x.y - - [25/Jun/2016:15:26:46 +0200] "GET /xen/xenserver.xml HTTP/1.1" 200 772 "-" "Python-urllib/2.7"
163.172.x.y - - [25/Jun/2016:15:26:48 +0200] "GET /xen/.treeinfo HTTP/1.1" 200 83 "-" "Python-urllib/2.7"
163.172.x.y - - [25/Jun/2016:15:26:48 +0200] "GET /xen/repodata/repomd.xml HTTP/1.1" 200 3708 "-" "Python-urllib/2.7"

After about 30 minutes you should see the XenServer 7 Welcome Page when you try to access your servers IP via any browser.

You can now connect to your newly installed XenServer via XenCenter (or just use XenOrchestra :P).

This is just a small note to myself on how to set up a Freifunk Node from the gluon x86-generic.img.

Log in on your Proxmox Node and fetch the img file and unzip it:

wget https://jenkins.bremen.freifunk.net/job/gluon-site-ffhb/lastSuccessfulBuild/artifact/gluon/output/images/factory/gluon-ffhb-2019.1.1+bremen2-1-g87a21dd-x86-generic.img.gz
gunzip gluon-ffhb-2019.1.1+bremen2-1-g87a21dd-x86-generic.img.gz

When done, remember the VM id and import the unzipped img file to the corresponding VM:

qm importdisk 123 gluon-ffhb-2019.1.1+bremen2-1-g87a21dd-x86-generic.img local-lvm

In your VM hardware options, detach the current active disk and delete it. Double click on the "Unused disk" and set it as ide0.

Done, after starting the VM up it should boot into gluon.