Weekly status #216

tomp · September 20, 2021, 8:44am

Weekly status for the week of the 13th of September to the 19th of September.

Introduction

This past week LXD has seen improvements to it’s BGP support as it now exports the network address forward addresses as prefixes. BGP support has also been added to the LXD charm.

@stgraber has also added Youtube videos covering using LXD on two very different types of machines; Rapsberry Pis and IBM mainframes.

LXD

Tutorial videos:

https://www.youtube.com/watch?v=iRsbAQw8ooA
https://www.youtube.com/watch?v=mZOUX3KYZRo

Improvements:

Export the network address forwards via BGP as single address prefixes.
Adds IPv6 EUI64 to network lease output.
When LXD is cleanly shutdown using lxd shutdown or SIGPWR, the storage pools are now unmounted (except LVM due to an ongoing issue that is being investigated).
No longer allow limits.memory to be set to 0, as this will prevent the instance from being started.
Respect modprobe blacklist config when trying to load a kernel module.

Bug fixes:

A recent change to LXD that added the cluster member names to the local database for ease in editing cluster config caused an unintended problem when using clustering in a cross-data centre environment where latency was higher than an internal LAN. The issue was caused because when a heartbeat was sent to each cluster member from the leader, the recipient member then proceeded to query back to the leader to enrich the cluster member names for its own local database. This took time over a high latency link and caused the heartbeat response to be sufficient delayed for the leader to consider the remote member offline. This has been fixed by getting the leader to broadcast the other member names in the heartbeat data itself, avoiding the need for the enrichment lookup step on the recipient.
Workaround an issue in OVN’s ovn-nbctl when removing existing NAT config before re-adding it.
An issue that prevented the use of cluster member targeting in some restricted projects has been fixed.

LXC

Improvements:

Adds support for building using Meson and various other build-time improvements.
Improve bash completion.

LXCFS

Improvements:

Various build-time improvements and clean-ups.

Distrobuilder

New features:

Adds --import-into-lxd flag which runs lxc image import at the end of the build.

Improvements:

Allow custom source variants in Gentoo image.

Bug fixes:

Fix post-files actions for LXC builds.

LXD Charm

New features:

Adds BGP and HTTP endpoints support.
Adds support for resources.

Youtube channel

We’ve started a Youtube channel with live streams covering LXD releases and its use in the wider ecosystem.

You may want to give it a watch and/or subscribe for more content in the coming weeks.

https://www.youtube.com/lxd-videos

Contribute to LXD

Ever wanted to contribute to LXD but not sure where to start?
We’ve recently gone through some effort to properly tag issues suitable for new contributors on Github: Easy issues for new contributors

Upcoming events

Nothing to report this week

Ongoing projects

The list below is feature or refactoring work which will span several weeks/months and can’t be tied directly to a single Github issue or pull request.

Distrobuilder Windows support
Virtual networks in LXD
Various kernel work
Stable release work for LXC, LXCFS and LXD

Upstream changes

The items listed below are highlights of the work which happened upstream over the past week and which will be included in the next release.

LXD

LXC

LXCFS

Distrobuilder

Dqlite (RAFT library)

Nothing to report this week

Dqlite (database)

Nothing to report this week

Dqlite (Go bindings)

Nothing to report this week

LXD Charm

Distribution work

This section is used to track the work done in downstream Linux distributions to ship the latest LXC, LXD and LXCFS as well as work to get various software to work properly inside containers.

Ubuntu

Nothing to report this week

Snap

lvm: Handle lvresize with lvm.external=true
wrappers: Be less verbose in editor/remote-viewer