This article originally appeared on Andres Rodriguez’s blog
I’m happy to announce that MAAS 2.3.0 (final) is now available!
This new MAAS release introduces a set of exciting features and improvements to the overall user experience. It now becomes the focus of maintenance, as it fully replaces MAAS 2.2
In order to provide with sufficient notice, please be aware that 2.3.0 will replace MAAS 2.2 in the Ubuntu Archive in the coming weeks. In the meantime, MAAS 2.3 is available in PPA and as a Snap.
MAAS 2.3.0 is currently available in ppa:maas/next for the coming week.
sudo add-apt-repository ppa:maas/next sudo apt-get update sudo apt-get install maas
Please be aware that MAAS 2.3 will replace MAAS 2.2 in ppa:maas/stablewithin a week.
For those wanting to use the snap, you can obtain it from the stablechannel:
sudo snap install maas –devmode –stable
Starting from MAAS 2.3, machine network configuration is now handled by cloud-init. In previous MAAS (and curtin) releases, the network configuration was performed by curtin during the installation process. In an effort to improve robustness, network configuration has now been consolidated in cloud-init. MAAS will continue to pass network configuration to curtin, which in turn, will delegate the configuration to cloud-init.
As part of the effort to reduce dependencies and improve reliability, MAAS ephemeral (network boot) images are no longer loaded using iSCSI (tgt). By default, the ephemeral images are now obtained using HTTP requests to the rack controller. After upgrading to MAAS 2.3, please ensure you have the latest available images. For more information please refer to the section below (New features & improvements).
MAAS 2.3 now supports the ability to perform network configuration for CentOS and Windows. The network configuration is performed via cloud-init. MAAS CentOS images now use the latest available version of cloud-init that includes these features.
MAAS can now perform machine network configuration for CentOS 6 and 7, providing networking feature parity with Ubuntu for those operating systems. The following can now be configured for MAAS deployed CentOS images:
Our thanks to the cloud-init team for improving the network configuration support for CentOS.
MAAS can now configure NIC teaming (bonding) and VLAN interfaces for Windows deployments. This uses the native NetLBFO in Windows 2008+. Contact us for more information (https://maas.io/contact-us).
MAAS 2.3 introduces a new and improved hardware testing framework that significantly improves the granularity and provision of hardware testing feedback. These improvements include:
Hardware testing improvements include the following UI changes:
For more information please refer to https://docs.ubuntu.com/maas/2.3/en/nodes-hw-testing.
In order to confirm network connectivity and aide with the discovery of VLANs, fabrics and subnets, MAAS 2.3 introduces network beaconing. MAAS now sends out encrypted beacons, facilitating network discovery and monitoring. Beacons are sent using IPv4 and IPv6 multicast (and unicast) to UDP port 5240. When registering a new controller, MAAS uses the information gathered from the beaconing protocol to ensure that newly registered interfaces on each controller are associated with existing known networks in MAAS. This aids MAAS by providing better information on determining the network topology. Using network beaconing, MAAS can better correlate which networks are connected to its controllers, even if interfaces on those controller are not configured with IP addresses. Future uses for beaconing could include validation of networks from commissioning nodes, MTU verification, and a better user experience for registering new controllers.
MAAS 2.3 now enables an upstream HTTP proxy to be used while allowing MAAS deployed machines to continue to use the caching proxy for the repositories. Doing so provides greater flexibility for closed environments, including:
Adding upstream proxy support also includes an improved configuration on the settings page. Please refer to Settings > Proxy for more details.
Historically, MAAS has used ‘tgt’ to provide images over iSCSI for the ephemeral environments (e.g commissioning, deployment environment, rescue mode, etc). MAAS 2.3 changes the default behaviour by now providing images over HTTP. These images are now downloaded directly by the initrd. The change means that the initrd loaded on PXE will contact the rack controller to download the image to load in the ephemeral environment. Support for using ‘tgt’ is being phased out in MAAS 2.3, and will no longer be supported from MAAS 2.4 onwards. For users who would like to continue to use & load their ephemeral images via ‘tgt’, they can disable http boot with the following command. maas <user> maas set-config name=http_boot value=False
MAAS 2.3 introduces an improved design for the machines, devices and controllers detail pages that include the following changes.
Other UI improvements that have been made for MAAS 2.3 include:
MAAS 2.3 can now automatically deploy rack controllers when deploying a machine. This is done by providing cloud-init user data, and once a machine is deployed, cloud-init will install and configure the rack controller. Upon rack controller registration, MAAS will automatically detect the machine is now a rack controller and it will be transitioned automatically. To deploy a rack controller, users can do so via the API (or CLI), e.g: maas <user> machine deploy <system_id> install_rackd=True Please note that this features makes use of the MAAS snap to configure the rack controller on the deployed machine. Since snap store mirrors are not yet available, this will require the machine to have access to the internet to be able to install the MAAS snap.
MAAS now surfaces the version of each running controller and notifies the users of any version mismatch between the region and rack controllers. This helps administrators identify mismatches when upgrading their MAAS on a multi-node MAAS cluster, such as within a HA setup.
This new release introduces various improvements to the DNS reload mechanism. This allows MAAS to be smarter about when to reload DNS after changes have been automatically detected or made.
The machines API endpoint now provides more information on the configured storage and provides additional output that includes volume_groups, raids, cache_sets, and bcaches fields.
MAAS 2.3 now supports the latest Django LTS version, Django 1.11. This allows MAAS to work with the newer Django version in Ubuntu Artful, which serves as a preparation for the next Ubuntu LTS release.
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