Configure a Block Storage Service node

Use the instructions in Chapter 2, Basic operating system configuration to configure the system. Note the following differences from the installation instructions for the controller node:

Install the required LVM packages, if they are not already installed:

# apt-get install lvm2

Create the LVM physical and logical volumes. This guide assumes a second disk /dev/sdb that is 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:

	Note
	You must add required physical volumes for LVM on the Block Storage host. Run the pvdisplay command to get a list or required volumes.

Each item in the filter array starts with either an a for accept, or an r for reject. The physical volumes that are required on the Block Storage host have names that begin with a. The array must end with "r/.*/" to reject any device not listed.

In this example, /dev/sda1 is the volume where the volumes for the operating system for the node reside, while /dev/sdb is the volume reserved for cinder-volumes.

devices {
...
filter = [ "a/sda1/", "a/sdb/", "r/.*/"]
...
}

After you configure the operating system, install the appropriate packages for the Block Storage Service:

# apt-get install 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 Block Storage to use the RabbitMQ message broker by setting these configuration keys in the [DEFAULT] configuration group of the /etc/cinder/cinder.conf file. Replace RABBIT_PASS with the password you chose for RabbitMQ.

[DEFAULT]
...
rpc_backend = cinder.openstack.common.rpc.impl_kombu
rabbit_host = controller
rabbit_port = 5672
rabbit_userid = guest
rabbit_password = RABBIT_PASS

Configure Block Storage to use your MySQL database. Edit the /etc/cinder/cinder.conf file and add the following key under the [database] section. Replace CINDER_DBPASS with the password you chose for the Block Storage database.

	Note
	The /etc/cinder/cinder.conf file packaged with some distributions does not include the [database] section header. You must add this section header to the end of the file before proceeding further.

[database]
...
connection = mysql://cinder:CINDER_DBPASS@controller/cinder

Restart the cinder service with its new settings:

# service cinder-volume restart
# service tgt restart