131 lines
No EOL
2.6 KiB
Markdown
131 lines
No EOL
2.6 KiB
Markdown
# Creating a New VM Guest on an IETF NOC Ganeti Cluster
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## Install Image Types
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Install the noop image type on all nodes in the cluster
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```
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echo 'deb http://repo.noc.grnet.gr/ wheezy main' > /etc/apt/sources.list.d/grnet.list
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wget -O - http://repo.noc.grnet.gr/grnet.gpg.key | apt-key add -
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apt-get update
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apt-get install ganeti-os-noop
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```
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If you get in trouble with apt-get update failing using IPv6, try
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```
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cat > /etc/apt/apt.conf.d/99force-ipv4
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Acquire::ForceIPv4 "true";
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```
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Now you can create instances a la
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```
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gnt-instance add -t plain -o noop
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...
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```
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## Create the VM
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This is the script i use as it is in vmhost-4:~randy/do-nnew
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```
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#!/bin/sh
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# do-new node diskGB ramGB nameFQDN
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NODE=$1
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DISK=$2
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RAM=$3
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NAME=$4
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gnt-instance add \
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-t plain \
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-o noop \
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-s ${DISK}G \
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-B maxmem=${RAM}G,minmem=$((${RAM}/2))G \
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-n $NODE \
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-H kvm:vnc_bind_address=127.0.0.1 \
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--no-install \
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--no-start \
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--no-ip-check \
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--no-name-check \
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${NAME}
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```
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## Install from CD-ROM
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Start the Guest VM With the CD-ROM Mounted ==
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```
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gnt-instance start -H boot_order=cdrom,cdrom_image_path=/var/iso/ubuntu-14.04.2-server-amd64.iso <your VM name>
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```
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### Find the Console Port of the Running VM
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Then find out on what port the vnc server will appear, 11019 in this case
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```
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gnt-instance info meetecho-1.meeting.ietf.org | grep console
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console connection: vnc to vmhost-6.meeting.ietf.org:11019 (display 5119)
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serial_console: default (True)
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```
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### Tunnel VNC over SSH
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From your laptop
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```
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ssh -N -L 5900:127.0.0.1:<port from gnt-instance info> <vm-node-for-image>
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```
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### Do the Install
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It should have booted the CD-ROM. Now do the install of the OpSys in your usual fashion.
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When it finishes, if you just let it reboot, it will likely just boot the CD-ROM again. So restart the guest by
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```
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gnt-instance reboot your.vm.name
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```
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### Enable Serial Console
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It is also smart to enable the serial console in the guest so that the Ganeti host is able to
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```
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gnt-instance console your.vm.name
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```
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### Detailed Configuration
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Configure the Network to the Correct IP, Gateway etc.
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```
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e /etc/network/interfaces
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```
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Fix the hostname
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```
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echo "foo.meeting.ietf.org" > /etc/hostname
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hostname `cat /etc/hostname`
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```
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Fix the timezone in case you made a mistake in install
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```
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dpkg-reconfigure tzdata
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```
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If you have reconfigured networking to be on the public LAN, then you need to bind the NIC to the public LAN with
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```
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gnt-instance modify --net 0:modify,link=br-public your.vm.name
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```
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Restart the server from ganeti
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```
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gnt-instance reboot foo.meeting.ietf.org
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``` |