v0.4.0

v0.4.0

Ignite's biggest release yet!

There are many significant changes compared to before:

New Features

• Make base and kernel OCI images composable for a VM. You can now choose what kernel to combine with what base image freely #105
• Add the GitOps mode for Ignite using ignite gitops #100
  • Documentation: https://github.com/weaveworks/ignite/blob/master/gitops
• Make it possible to run ignite create and ignite run declaratively 5733364
  • Documentation: https://github.com/weaveworks/ignite/blob/master/docs/declarative-config.md
• Added Prometheus metrics for ignite-spawn 94abc52
  • Documentation: https://github.com/weaveworks/ignite/blob/master/docs/prometheus.md
• Implemented CNI support a889753

API Machinery

• Added the ignite.weave.works/v1alpha1 API group with the Ignite API types ca1edc8
  • API reference: https://github.com/weaveworks/ignite/blob/master/api/ignite.md
  • This API version will not change in a future version. When improvements are made, it will be to v1alpha2 etc.
• Add a meta API package containing supporting but generic API types for Ignite 09d51ab
  • API reference: https://github.com/weaveworks/ignite/blob/master/api/meta.md
• Create composable interfaces for the internal API machinery: Client -> Cache -> Storage -> RawStorage -> Serializer #93 #96 #99
• The API Machinery used in Ignite is partly based on the Kubernetes API machinery (k8s.io/apimachinery), and hence follows some of the same patterns

New Commands

• Add the ignite inspect command #107
• Add the ignite gitops command #100

Documentation

• Add user-facing documentation and guides #113
  • See: https://github.com/weaveworks/ignite/tree/master/docs
• Generate OpenAPI specifications f1c5bfd
  • See: https://github.com/weaveworks/ignite/blob/master/api/openapi/openapi_generated.go
• Add API type documentation 218c947
  • See: https://github.com/weaveworks/ignite/blob/master/api
• Added architecture diagram da53f9f
  • See: https://github.com/weaveworks/ignite/blob/master/docs/architecture.png
• Added graph of module dependencies be7cc08
  • See: https://github.com/weaveworks/ignite/blob/master/docs/dependencies.svg

Updated Images

Base Images

• weaveworks/ignite-ubuntu:v0.4.0: https://github.com/weaveworks/ignite/blob/master/images/ubuntu/Dockerfile
• weaveworks/ignite-centos:v0.4.0: https://github.com/weaveworks/ignite/blob/master/images/centos/Dockerfile
• weaveworks/ignite-amazonlinux:v0.4.0: https://github.com/weaveworks/ignite/blob/master/images/amazonlinux/Dockerfile
• weaveworks/ignite-alpine:v0.4.0: https://github.com/weaveworks/ignite/blob/master/images/alpine/Dockerfile

Kernel Images

• weaveworks/ignite-kernel:4.14.123: https://github.com/weaveworks/ignite/blob/master/images/kernel/Dockerfile
• weaveworks/ignite-kernel:4.19.47 (default): https://github.com/weaveworks/ignite/blob/master/images/kernel/Dockerfile
• weaveworks/ignite-amazon-kernel:v0.4.0 (using 4.14.55): https://github.com/weaveworks/ignite/blob/master/images/amazon-kernel/Dockerfile

Internal Improvements

• A significant refactor of the whole application has been made to support the new API machinery
• Add structured logging #110
• Factor out ignite-spawn into its own binary running in the container 0a1965e
• Upgraded the Firecracker version to v0.17.0 41e3595
• Set Go version to 1.12.6 d00cce7

Trying it out / Next Steps!

In short:

export VERSION=v0.4.0
curl -fLo ignite https://github.com/weaveworks/ignite/releases/download/${VERSION}/ignite
chmod +x ignite
sudo mv ignite /usr/local/bin

A longer installation guide is available here: https://github.com/weaveworks/ignite/blob/master/docs/installation.md