OpenNebula

Pre-Installation Tasks

1. groupadd --gid 2001 oneadmin
2. useradd --uid 201 -g oneadmin -d /var/lib/one -m oneadmin
3. elinks http://downloads.opennebula.org/

Install

1. dpkg --install *.deb
2. apt-get -f install (to get dependencies)
3. /usr/share/opennebula/install_gems
4. cd /usr/share/opennebula
5. ./install_novnc.sh

Configure

Host configuration

1. Ensure that /etc/xen/xend-config.sxp has the vnc-listen directive set to 0.0.0.0
2. Add opennebula to /etc/hosts
3. apt-get install ruby sshfs
4. Copy key to /root/.ssh/authorized_keys
5. groupadd and useradd commands as above
6. usermod -a -G disk oneadmin
7. mkdir /etc/xen/auto
8. mkdir /etc/xen/vm
9. ssh-keygen for oneadmin and add to authorized_keys on opennebula controller
10. Add to /etc/sudoers:

 oneadmin  ALL=(ALL) NOPASSWD: /usr/sbin/xm *
 oneadmin  ALL=(ALL) NOPASSWD: /usr/sbin/xentop *
 oneadmin  ALL=(ALL) NOPASSWD: /sbin/lvs *
 oneadmin  ALL=(ALL) NOPASSWD: /sbin/lvcreate *
 oneadmin  ALL=(ALL) NOPASSWD: /sbin/lvremove *
 oneadmin  ALL=(ALL) NOPASSWD: /bin/dd *

1. Mount the datastore by adding to /etc/fstab

 sshfs#oneadmin@opennebula:/var/lib/one/datastores/1   /var/lib/one/datastores/1   fuse defaults,allow_other,reconnect   0 0

Front end

1. mkdir ~/.one
2. echo "oneadmin:password" > ~/.one/one_auth
3. chmod 600 ~/.one/one_auth
4. Change :host: to 0.0.0.0 and :port: to 80 in /etc/one/sunstone-server.conf
5. echo "Host *" >> ~/.ssh/config
6. echo " StrictHostKeyChecking no" >> ~/.ssh/config
7. Authorise self to SSH: cat /var/lib/one/.ssh/id_rsa.pub /var/lib/one/.ssh/authorized_keys

CXM

1. cd ~
2. git clone git://github.com/nagius/cxm
3. cd git/cxm/miscl
4. cp -r opennebula/tm opennebula/vmm /var/lib/one/remotes
5. cp cxm.conf /etc/
6. Change XPATH directive in cxm.conf to read "xpath -e"

1. N.B. Not sure what this does. Ignore for now:

 Change the post-migration hook in the cxm configuration to use one-migrate script. In /etc/xen/cxm.conf, change:e in /etc/xen/cxm.conf :
 POST_MIGRATION_HOOK="/usr/local/sbin/one-migrate"
 And update this script to fill the variable ONE_HOST with the hostname of your OpenNebula frontend.

Root OpenNebula Configuration

1. Go to /var/lib/one/remotes/vmm/xen/xenrc and uncomment the line:

 export XM_CREDITS="sudo $XM_PATH sched-credit"

1. Change /etc/one/one.conf to uncomment the following (commenting the KVM lines):

 IM_MAD = [
     name       = "im_xen",
     executable = "one_im_ssh",
     arguments  = "xen" ]
 
 VM_MAD = [
     name       = "vmm_xen",
     executable = "one_vmm_exec",
     arguments  = "xen",
     default    = "vmm_exec/vmm_exec_xen.conf",
     type       = "xen" ]

1. Also add cxm to the TM_MAD directive so it reads:

 TM_MAD = [
 executable = "one_tm",
 arguments  = "-t 15 -d dummy,lvm,shared,qcow2,ssh,vmware,iscsi,cxm" ]

1. Add the cxm driver:

 VM_MAD = [
 name       = "vmm_cxm",
 executable = "one_vmm_exec",
 arguments  = "-t 15 -r 0 cxm",
 default    = "vmm_exec/vmm_exec_xen.conf",
 type       = "xen" ]

1. Change the default disk driver for phy: in /etc/one/vmm_exec/vmm_exec_xen.conf :

 DISK = [ driver = "phy:" ]

Hosts

• onehost create cloud1 --im im_xen --vm vmm_cxm --net dummy
• onehost create cloud2 --im im_xen --vm vmm_cxm --net dummy
• onehost enable cloud1
• onehost enable cloud2

Datastores

• Change the default datastore to use cxm by typing onedatastore update 1

 TM_MAD="cxm"

• onedatastore create

 NAME="london1cxm"
 DS_MAD="fs"
 TM_MAD="cxm"
 NO_DECOMPRESS="yes"
 SYSTEM="yes"

• onecluster adddatastore London1 london1cxm

Clusters

• onecluster create London1
• onecluster addhost London1 cloud1
• onecluster addhost London1 cloud2
• onecluster update 102

 SYSTEM_DS="X" where X is the cxm datastore

Templates

• onetemplate create

 CPU="1"
 DISK=[
   FORMAT="ext3",
   SIZE="1024",
   TYPE="fs" ]
 GRAPHICS=[
   TYPE="vnc" ]
 MEMORY="128"
 NAME="Whatever"
 OS=[
   BOOTLOADER="/usr/lib/xen-4.1/bin/pygrub" ]
 RAW=[
   TYPE="xen" ]
 TEMPLATE_ID="1"
 VCPU="1"

Images

• Create debian.one in /images with the following

 NAME = "Deb 6 x86 Std"
 PATH = "/images/debian-opennebula.tar.gz"
 TYPE = OS
 DESCRIPTION = "Debian 6 (Squeeze) x86_64 with standard system utilities"

• oneimage create debian.one -d 1