MicroCloud 2.1.4 release notes¶
This is an LTS release and contains bugfixes, package updates and new features. It’s the fifth release of the 2 LTS track.
Highlights¶
This section highlights new and improved features in this release.
New home for docs¶
The integrated doc set was moved to canonical.com/microcloud/docs. It is now located alongside MicroCloud’s product page.
The changes were split across several PRs, see:
Decommissioning guide¶
Adds a MicroCloud decommissioning guide, adapted from the LXD decommissioning guide.
It’s reorganized around decommissioning a full cluster, favors microcloud commands over lxc and adds MicroCloud-specific details such as MicroCeph logging,
OSD removal, Ceph monmap cleanup, and snap removal covering MicroCloud, LXD, MicroCeph and MicroOVN.
Improved resource naming in Terraform demo¶
Avoid hardcoding of variable names for the network bridge and support custom VM numbering with a matching enumeration for disk names.
Dynamic OVN northbound DB addresses¶
LXD added support to read the OVN northbound DB addresses directly from the ovn.env
file which is kept up to date by the MicroOVN snap.
This allows MicroCloud to omit setting the network.ovn.northbound_connection configuration option in LXD.
LXD can now react immediately on address changes made in MicroOVN.
Previously, MicroCloud only updated the network.ovn.northbound_connection configuration option during cluster initialization and
when adding additional members.
Preseed filter examples¶
When deploying MicroCloud clusters using preseed, optional storage filters can be provided to find specific disks to be used for local and remote (Ceph) storage. The respective how-to guides were extended to show practical usage examples.
Bug fixes¶
The following bug fixes are included in this release.
Hide the --state-dir flag from CLI¶
This flag is used to select the actual state directory of the MicroCloud snap. The snap’s command wrapper already takes care of setting this to the correct state directory. A user never needs to set this flag manually.
Drop disk existence check during preseed¶
In preseed mode, all of the disks selected for remote storage were checked for existence on the initiator. This does not work for disks which were selected on cluster members other than the initiator.
Wrong disk selections (without using filters) will cause the deployment to error out anyway.
Upgrading to the new version¶
If you are already using MicroCloud 2 LTS, refer to the Update MicroCloud guide for information on how to retrieve and use the latest release within the same major version. If you are on an older major version, refer to the Upgrade MicroCloud guide.