MAAS

A MAAS resource handler connects Cloud Management Platform (CMP) to Canonical Metal as a Service (MAAS) and provisions physical machines, or virtual machines on MAAS VM hosts

Each imported MAAS zone becomes a CMP environment. For a physical server, CMP asks MAAS to allocate a Ready machine that meets the order’s requirements, then deploys the chosen image to it. MAAS server selection explains how machines and VM hosts are chosen.

Before you begin

  • A MAAS user account for CMP, with a username and password.
  • An SSH key pair, with the public key added to that MAAS account so that MAAS installs it on the machines it deploys.
  • Network access from CMP to the MAAS region controller.

Add a MAAS resource handler

  1. Go to Admin > Resource Handlers, select Add, then select MAAS.
  2. Complete the credentials fields described below, then select Continue. CMP checks the connection at this point.
  3. Enter a Name, and optionally a Description and VM Names to Ignore, then select Done.
Field Description
Region Controller The host name or IP address of the MAAS region controller.
Protocol https is recommended and selected by default. Select http if HTTPS is not enabled on the region controller.
Port The port the MAAS API listens on. The dialog opens with 443; change it if you change the protocol. MAAS serves HTTP on port 5240 by default.
Account username The username of the MAAS account for CMP.
Password The password for that account.
SSL Verification Whether CMP verifies the region controller’s SSL certificate. If the certificate is self-signed or issued by a private certificate authority, see SSL root certificates.

Import locations

A new handler has no environments until you import a location. Locations are MAAS availability zones, and CMP creates one environment for each selected zone.

  1. On the handler, open the Locations tab and select Import Locations.
  2. Select zones, then select Import selected locations.

To add another environment for an imported zone, select the plus icon beside it and select Create.

Import images

An environment cannot provision until an image is imported and linked to it. CMP imports the operating system images available in MAAS.

  1. On the handler, open the Images tab and select Import Images.
  2. Select images, then select Import selected Images.
  3. In the OS Build Environments column, select the edit icon for an image, choose the environments that may use it, then select Save changes.

Import networks

CMP imports MAAS subnets as networks, so that orders can request them.

  1. On the handler, open the Networks tab and select Import Networks.
  2. Select subnets, then select Import selected networks.
  3. Add the networks to each environment that should offer them.

For a physical server, MAAS allocates only a machine that already has an interface on every network the order requests.

Add SSH key material

CMP runs scripts on a MAAS server over SSH, with the private key that matches the key selected under Key pair name for that server. Upload each private key to CMP once.

  1. On the handler, open the SSH Keys tab. It lists the keys that the handler’s environments offer under Key pair name.
  2. Select the edit icon for the key.
  3. Paste the full private key, then select Save. This replaces any stored material for that key.

CMP reads the account’s keys from MAAS when an environment is created. If you add a key to the MAAS account later, refresh the list on each environment’s MAAS Parameters tab by selecting the import icon in the Key pair name row.

For accepted key formats, see Key material.

Sync and manage servers

To bring existing MAAS machines into CMP, open the handler’s Servers tab and select Sync VMs from followed by the handler’s name. The Dry-run Sync VMs from button beside it previews the sync without making changes.

From CMP, you can power MAAS servers on and off, and reboot them.

  • SSH keys: how CMP stores and uses private key material.

MAAS parameters

MAAS parameters set where a Cloud Management Platform (CMP) order is placed in MAAS, which machines qualify for it, and whether it becomes a physical machine or a virtual machine

MAAS server selection

For each MAAS order, Cloud Management Platform (CMP) either asks MAAS to allocate a physical machine that meets the order’s requirements or creates a virtual machine on a MAAS VM host