This section documents a multi-node installation using RHEL 6. RPM repos for the Bexar release, the Cactus release, milestone releases of Diablo, and also per-commit trunk builds for OpenStack Nova are available at http://yum.griddynamics.net. The final release of Diablo is available at http://yum.griddynamics.net/yum/diablo/, but is not yet tested completely (as of Oct 4, 2011). Check this page for updates: http://wiki.openstack.org/NovaInstall/RHEL6Notes. Known considerations for RHEL version 6 installations: iSCSI LUN not supported due to tgtadm versus ietadm differences GuestFS is used for files injection Files injection works with libvirt Static network configuration can detect OS type for RHEL and Ubuntu Only KVM hypervisor has been tested with this installation To install Nova on RHEL v.6 you need access to two repositories, one available on the yum.griddynamics.net website and the RHEL DVD image connected as repo. First, install RHEL 6.0, preferrably with a minimal set of packages. Disable SELinux in /etc/sysconfig/selinux and then reboot. Connect the RHEL 3. 6.0 x86_64 DVD as a repository in YUM. sudo mount /dev/cdrom /mnt/cdrom /etc/yum.repos.d/rhel.repo [rhel] name=RHEL 6.0 baseurl=file:///mnt/cdrom/Server enabled=1 gpgcheck=0 Download and install repo config and key. The cloud controller plus compute node is installed with the example rpm below. You can use http://yum.griddynamics.net/yum/diablo/openstack-nova-node-compute-2011.3-b609.noarch.rpm for a compute node only. wget http://yum.griddynamics.net/yum/diablo/openstack-nova-node-full-2011.3-b609.noarch.rpm sudo rpm -i openstack-repo-2011.1-3.noarch.rpm Install the libvirt package (these instructions are tested only on KVM). sudo yum install libvirt sudo chkconfig libvirtd on sudo service libvirtd start Repeat the basic installation steps to put the pre-requisites on all cloud controller and compute nodes. Nova has many different possible configurations. You can install Nova services on separate servers as needed but these are the basic pre-reqs. These are the basic packages to install for a cloud controller node: sudo yum install euca2ools openstack-nova-node-full These are the basic packages to install compute nodes. Repeat for each compute node (the node that runs the VMs) that you want to install. sudo yum install openstack-nova-compute On the cloud controller node, create a MySQL database named nova. sudo service mysqld start sudo chkconfig mysqld on sudo service rabbitmq-server start sudo chkconfig rabbitmq-server on mysqladmin -u root password nova You can use this script to create the database. #!/bin/bash DB_NAME=nova DB_USER=nova DB_PASS=nova PWD=nova CC_HOST="A.B.C.D" # IPv4 address HOSTS='node1 node2 node3' # compute nodes list mysqladmin -uroot -p$PWD -f drop nova mysqladmin -uroot -p$PWD create nova for h in $HOSTS localhost; do echo "GRANT ALL PRIVILEGES ON $DB_NAME.* TO '$DB_USER'@'$h' IDENTIFIED BY '$DB_PASS';" | mysql -u root -p$DB_PASS mysql done echo "GRANT ALL PRIVILEGES ON $DB_NAME.* TO $DB_USER IDENTIFIED BY '$DB_PASS';" | mysql -u root -p$DB_PASS mysql echo "GRANT ALL PRIVILEGES ON $DB_NAME.* TO root IDENTIFIED BY '$DB_PASS';" | mysql -u root -p$DB_PASS mysql Now, ensure the database version matches the version of nova that you are installing: nova-manage db sync For iptables configuration, update your firewall configuration to allow incoming requests on ports 5672 (RabbitMQ), 3306 (MySQL DB), 9292 (Glance), 6080 (noVNC web console), API (8773, 8774) and DHCP traffic from instances. For non-production environments the easiest way to fix any firewall problems is removing final REJECT in INPUT chain of filter table. sudo iptables -I INPUT 1 -p tcp --dport 5672 -j ACCEPT sudo iptables -I INPUT 1 -p tcp --dport 3306 -j ACCEPT sudo iptables -I INPUT 1 -p tcp --dport 9292 -j ACCEPT sudo iptables -I INPUT 1 -p tcp --dport 6080 -j ACCEPT sudo iptables -I INPUT 1 -p tcp --dport 8773 -j ACCEPT sudo iptables -I INPUT 1 -p tcp --dport 8774 -j ACCEPT sudo iptables -I INPUT 1 -p udp --dport 67 -j ACCEPT On every node when you have nova-compute running ensure that unencrypted VNC access is allowed only from Cloud Controller node: sudo iptables -I INPUT 1 -p tcp -s <CLOUD_CONTROLLER_IP_ADDRESS> --dport 5900:6400 -j ACCEPT On each node, set up the configuration file in /etc/nova/nova.conf. Start the Nova services after configuring and you then are running an OpenStack cloud! for n in api compute network objectstore scheduler vncproxy; do sudo service openstack-nova-$n start; done sudo service openstack-glance-api start sudo service openstack-glance-registry start for n in node1 node2 node3; do ssh $n sudo service openstack-nova-compute start; done