* Poseidon infra publishes official multi-arch container
images for Kubelet to both Quay and Dockerhub (fallback).
There is no change here
* Automated builds by Quay and Dockerhub added separately
tagged images for those not able to trust our images and
preferring to trust Quay/Dockerhub. Going forward, we're
ending the use of Dockerhub automated builds. Docker has
moved automated builds to paid plans, even for open source
projects (we're not petitioning for a special exemption
given these are our unofficial images). Those still needing
Kubelet images built externally (i.e. not Poseidon Labs)
would still be able to use the Quay images tagged `build-SHA`
* Use our DigitalOcean referral code for new DigitalOcean
users. This gives new accounts free cloud credits and
provides a smaller cloud credit back to the project
* Link to the new video meeting via one-time Github Sponsor
feature that we're trying out
* List Fedora CoreOS ARM64 as a supported platform (alpha).
Before this was only mentioned in docs and on the blog.
* Add `node_taints` variable to worker modules to set custom
initial node taints on cloud platforms that support auto-scaling
worker pools of heterogeneous nodes (i.e. AWS, Azure, GCP)
* Worker pools could use custom `node_labels` to allowed workloads
to select among differentiated nodes, while custom `node_taints`
allows a worker pool's nodes to be tainted as special to prevent
scheduling, except by workloads that explicitly tolerate the
taint
* Expose `daemonset_tolerations` in AWS, Azure, and GCP kubernetes
cluster modules, to determine whether `kube-system` components
should tolerate the custom taint (advanced use covered in docs)
Rel: #550, #663Closes#429
* Flatcar Linux has not published an Edge channel image since
April 2020 and recently removed mention of the channel from
their documentation https://github.com/kinvolk/Flatcar/pull/345
* Users of Flatcar Linux Edge should move to the stable, beta, or
alpha channel, barring any alternate advice from upstream Flatcar
Linux
* Allow terraform-provider-ct versions v0.6+ (e.g. v0.7.1)
Before, only v0.6.x point updates were allowed
* Update terraform-provider-ct to v0.7.1 in docs
* READ the docs before updating terraform-provider-ct,
as changing worker user-data is handled differently
by different cloud platforms
* NLB subnets assigned both IPv4 and IPv6 addresses
* NLB DNS name has both A and AAAA records
* NLB to target node traffic is IPv4 (no change),
no change to security groups needed
* Ingresses exposed through the recommended Nginx
Ingress Controller addon will be accessible via
IPv4 or IPv6. No change is needed to the app's
CNAME to NLB record
Related: https://aws.amazon.com/about-aws/whats-new/2020/11/network-load-balancer-supports-ipv6/
* Add experimental `arch` variable to Fedora CoreOS AWS,
accepting amd64 (default) or arm64 to support native
arm64/aarch64 clusters or mixed/hybrid clusters with
a worker pool of arm64 workers
* Add `daemonset_tolerations` variable to cluster module
(experimental)
* Add `node_taints` variable to workers module
* Requires flannel CNI and experimental Poseidon-built
arm64 Fedora CoreOS AMIs (published to us-east-1, us-east-2,
and us-west-1)
WARN:
* Our AMIs are experimental, may be removed at any time, and
will be removed when Fedora CoreOS publishes official arm64
AMIs. Do NOT use in production
Related:
* https://github.com/poseidon/typhoon/pull/682
* Allow a snippet with a systemd dropin to set an alternate
image via `ETCD_IMAGE`, for consistency across Fedora CoreOS
and Flatcar Linux
* Drop comments about integrating system containers with
systemd-notify
Dalton Hubble
Thorben