OpenStack Part 5: Setting up OpenStack

Still following this guide.

For the controller node I needed to install first:

  • SQL database: MariaDB
  • NoSQL database: MongoDB
  • Message queue: RabbitMQ
  • Memcached

to support these services on the controller node:

  • Identity (keystone)
  • Image service (glance)
  • Dashboard (horizon) – will only be installed after setting up the networking node

these on the network node:

  • Networking (neutron)

and these on the compute node:

  • Compute (nova)

First I install keystone and glance on the controller node, then nova on the compute node, and neutron on the network node. Back to the controller node, I will add horizon and ceilometer.

keystone

While installing keystone, and populating the database, I ran into an issue where the script returned an error:

2016-07-27 22:36:21.749 3111 ERROR oslo_db.sqlalchemy.exc_filters [-] DBAPIError exception wrapped from (pymysql.err.InternalError) (1071, u'Specified key was too long; max key length is 767 bytes')

A solution was found here: https://bugs.launchpad.net/openstack-manuals/+bug/1575688

It basicly comes down to ubuntu is now using a character set with 4 bytes per character, while the python engine, while trying to create a field 250 characters long can only support 767 bytes, which is less than the 1000 bytes it would take. The fix described will reconfigure mariadb to use 1 byte characters instead, and recreate the keystone database.

glance

As described in the guide

nova

As described in the guide, but I did have some trouble because I entered the wrong password for the nova user while creating it in openstack.

neutron

I found this example architecture, but then I would need to add another VLAN interface to the compute and network node machines, and the controller node only needs the management interface, so I can remove interface to the tunnel network again:
http://docs.openstack.org/mitaka/networking-guide/scenario-classic-ovs.html

On the controller node I would need to install:

  • neutron-server
  • neutron-plugin-ml2

On the network node:

  • openvswitch-switch
  • neutron-plugin-ml2
  • neutron-openvswitch-agent
  • neutron-l3-agent
  • neutron-dhcp-agent
  • neutron-metadata-agent

And on the compute node:

  • openvswitch-switch
  • neutron-plugin-ml2
  • neutron-openvswitch-agent

The guide describes how to install a basic neutron service on the controller node, but instead I would like it to run on the network node instead.

Installation of the above mentioned services has been done, but setting it up proved too much at this point.  I will cover this in a following post.

More information will probably come from this http://docs.openstack.org/mitaka/networking-guide/, instead of the basic installation guide.

horizon

The was very straightforward, as one would expect.  Installation followed the guide.

ceilometer (still optional)

Postponing installation of ceilometer for later.

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