After you configure the services on the controller node, configure a second system to be a Block Storage node. This node contains the disk that will be used to serve volumes. You can configure OpenStack to use various storage systems. The examples in this guide show how to configure LVM. Using the instructions in to configure the system. Note the following differences from the controller node: Set the hostname to block1. Ensure that the IP addresses and hostnames for both nodes are listed in the /etc/hosts file on each system. Follow the instructions in to synchronize from the controller node. After you configure the operating system, install the appropriate packages for the block storage service. # apt-get install cinder-volume lvm2 # yum install openstack-cinder openstack-utils openstack-selinux # zypper install openstack-cinder-volume Copy the /etc/cinder/api-paste.ini file from the controller, or open the file in a text editor and locate the section [filter:authtoken]. Make sure the following options are set: [filter:authtoken] paste.filter_factory=keystoneclient.middleware.auth_token:filter_factory auth_host=controller auth_port = 35357 auth_protocol = http admin_tenant_name=service admin_user=cinder admin_password=CINDER_PASS Configure the Block Storage Service to use the RabbitMQ message broker by setting the following configuration keys. They are found in the DEFAULT configuration group of the /etc/cinder/cinder.conf file. rpc_backend = cinder.openstack.common.rpc.impl_kombu rabbit_host = controller rabbit_port = 5672 # Change the following settings if you're not using the default RabbitMQ configuration #rabbit_userid = guest #rabbit_password = guest #rabbit_virtual_host = /nova Configure the Block Storage Service to use Qpid as the message broker. # openstack-config --set /etc/cinder/cinder.conf \ DEFAULT rpc_backend cinder.openstack.common.rpc.impl_qpid # openstack-config --set /etc/cinder/cinder.conf \ DEFAULT qpid_hostname controller Configure the Block Storage Service to use the RabbitMQ message broker. # openstack-config --set /etc/cinder/cinder.conf \ DEFAULT rpc_backend cinder.openstack.common.rpc.impl_kombu # openstack-config --set /etc/cinder/cinder.conf \ DEFAULT rabbit_host controller # openstack-config --set /etc/cinder/cinder.conf \ DEFAULT rabbit_port 5672 Configure the Block Storage Service on this Block Storage node to use the cinder database on the controller node. # openstack-config --set /etc/cinder/cinder.conf \ database connection mysql://cinder:CINDER_DBPASS@controller/cinder Edit /etc/cinder/cinder.conf and change the [database] section. [database] ... # The SQLAlchemy connection string used to connect to the # database (string value) connection = mysql://cinder:CINDER_DBPASS@controller/cinder ... Now, create the LVM Physical Volume and Logical Volume. This guide assumes a second disk /dev/sdb that will be used for this purpose. # pvcreate /dev/sdb # vgcreate cinder-volumes /dev/sdb Add a filter entry to the devices section /etc/lvm/lvm.conf to keep LVM from scanning devices used by virtual machines. You must add every physical volume that is needed for LVM on the Cinder host. You can get a list by running pvdisplay. Each item in the filter array starts with either an "a" for accept, or an "r" for reject. Physical volumes that are needed on the Cinder host begin with "a". The array must end with "r/.*/" to reject any device not listed. In this example, /dev/sda1 is the volume on which the node's own operating system volumes reside, while /dev/sdb is the volume reserved for cinder-volumes. devices { ... filter = [ "a/sda1/", "a/sdb/", "r/.*/"] ... } We now restart the cinder service with its new settings. # service cinder-volume restart # service tgt restart Configure the ISCI target service to discover cinder volumes. Add the following line to the top of /etc/tgt/targets.conf if it is not already present: include /etc/cinder/volumes/* Start the cinder services and configure them to start when the system boots. # service openstack-cinder-volume start # service tgtd start # chkconfig openstack-cinder-volume on # chkconfig tgtd on