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<title>Installation and Configuration</title>

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<title>Introduction</title>

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<para>The following section describes how to set up a minimal cloud infrastructure based on OpenStack using 3 machines. These machines are referred to in this and subsequent chapters as Server1 and Server2 and Client1. Server1 runs all the 7 components of Nova as well as Glance and OpenStack dashboard. Server2 runs only nova-compute. Since OpenStack components follow a shared-nothing policy, each component or any group of components can be installed on any server.</para>

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<para>The following section describes how to set up a minimal cloud infrastructure based on OpenStack using 3 machines. These machines are referred to in this and subsequent chapters as Server1 and Server2 and Client1. Server1 runs all the components of Nova as well as Glance and OpenStack dashboard. Server2 runs only nova-compute. Since OpenStack components follow a shared-nothing policy, each component or any group of components can be installed on any server.</para>

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<para>Client1 is not a required component. In our sample setup, it is used for bundling images, as a client to the web interface, and to run euca commands to manage the infrastructure. Having this client ensures that you do not need to meddle with the servers for tasks such as bundling. Also, bundling of Desktop Systems including Windows will require a GUI and it is better to have a dedicated machine for this purpose. We would recommend this machine to be VT-Enabled so that KVM can be run which allows for Windows VMs during image creation for bundling.</para>

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<para>

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</section>

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<title>Server1</title>

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<para>As shown in the figure above, Server1 contains all nova- services including nova-compute, nova-api, nova-volume, nova-network, nova-objectstore as well as the Image Service Glance and the Dashboard. </para>

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<para>As shown in the figure above, Server1 contains all nova- services including nova-compute, nova-api, nova-volume, nova-network, nova-objectstore as well as the Image Service Glance and the Dashboard. It contains two Network Interface Cards (NICs).</para>

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<para>Boot the server off the Ubuntu server 11.04 CD. At the graphical menu select Install Ubuntu server and proceed with basic installation steps.

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<programlisting>sudo mysql -uroot -p$MYSQL_PASS -e "GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' WITH GRANT OPTION;"</programlisting>

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<para>Set MySQL root password for login from any IP.</para>

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<programlisting>sudo mysql -uroot -p$MYSQL_PASS -e "SET PASSWORD FOR 'root'@'%' = PASSWORD('$MYSQL_PASS');"</programlisting>

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<para>Create a user named novadbadmin which has access to nova related databases.</para>

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<programlisting>sudo mysql -uroot -p$MYSQL_PASS -e 'CREATE USER novadbadmin;'</programlisting>

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<para>Grant all privileges for novadbadmin on the Database "nova".</para>

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<programlisting>sudo mysql -uroot -p$MYSQL_PASS -e "GRANT ALL PRIVILEGES ON nova.* TO 'novadbadmin'@'%' ;"</programlisting>

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<para>Set password for novadbadmin.</para>

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<programlisting>sudo mysql -uroot -p$MYSQL_PASS -e "SET PASSWORD FOR 'novadbadmin'@'%' = PASSWORD('$MYSQL_PASS');"</programlisting>

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</section>

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<title>Installing Sqlite (Instead of Mysql)</title>

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<para>Installation</para>

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<programlisting>sudo apt-get install sqlite</programlisting>

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</section>

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</section>

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<title>Nova Components</title>

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--image_service=nova.image.glance.GlanceImageService

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--iscsi_ip_prefix=192.168.

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</programlisting>

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<para>For configuring with Sqlite change the line with --sql_connection to:</para>

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<programlisting>--sql_connection=sqlite:////var/lib/nova/nova.sqlite</programlisting>

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<para>Enable iscsitarget.</para>

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<programlisting>sudo sed -i 's/false/true/g' /etc/default/iscsitarget</programlisting>

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<para>Restart the iscsitarget service</para>

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sudo chmod 644 /etc/nova/nova.conf

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</programlisting>

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<para>Restart all the nova related services.</para>

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<programlisting>sudo /etc/init.d/libvirt-bin restart; sudo restart nova-network; sudo restart nova-compute; sudo restart nova-api; sudo restart nova-objectstore; sudo restart nova-scheduler; sudo restart nova-volume; sudo restart glance-api; sudo restart glance-registry</programlisting>

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<programlisting>sudo restart libvirt-bin; sudo restart nova-network; sudo restart nova-compute; sudo restart nova-api; sudo restart nova-objectstore; sudo restart nova-scheduler; sudo restart nova-volume; sudo restart glance-api; sudo restart glance-registry</programlisting>

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<para>Create nova schema in the MySQL Database.</para>

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<programlisting>sudo nova-manage db sync</programlisting>

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<para>Create a list of IPs to be used from the network of fixed Ips set inside nova.conf.</para>

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<programlisting>sudo nova-manage network create 192.168.3.0/24 1 255

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<para>Create a list of IPs to be used from the network of fixed IPs set inside nova.conf.</para>

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<programlisting>sudo nova-manage network create --bridge_interface=br100 --fixed_range_v4=192.168.3.0/29 --label=proj

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</programlisting>

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<para>Allocate 32 pubic IP addresses for use with the instances starting from 10.10.10.225.</para>

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<programlisting>sudo nova-manage floating create 10.10.10.2 10.10.10.224/27

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<programlisting>sudo nova-manage floating create --ip_range=10.10.10.224/27

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</programlisting>

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<para>Create a user with admin rights on nova.</para>

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<programlisting>sudo nova-manage user admin novaadmin

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<programlisting>source /home/localadmin/creds/novarc

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</programlisting>

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<para>Restart all the nova related services.</para>

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<programlisting>sudo /etc/init.d/libvirt-bin restart; sudo restart nova-network; sudo restart nova-compute; sudo restart nova-api; sudo restart nova-objectstore; sudo restart nova-scheduler; sudo restart nova-volume; sudo restart glance-api; sudo restart glance-registry</programlisting>

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<programlisting>sudo restart libvirt-bin; sudo restart nova-network; sudo restart nova-compute; sudo restart nova-api; sudo restart nova-objectstore; sudo restart nova-scheduler; sudo restart nova-volume; sudo restart glance-api; sudo restart glance-registry</programlisting>

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<para>Check if the credentials are working and if nova has been setup properly by running:</para>

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<programlisting>euca-describe-availability-zones verbose

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</programlisting>