2.1 KiB
2.1 KiB
Operating Systems
Typhoon supports Container Linux, Flatcar Linux and Fedora CoreOS (preview). These operating systems were chosen because they offer:
- Minimalism and focus on clustered operation
- Automated and atomic operating system upgrades
- Declarative and immutable configuration
- Optimization for containerized applications
Together, they diversify Typhoon to support a range of container technologies.
- Container Linux: Gentoo core, rkt-fly, docker
- Fedora CoreOS: rpm-ostree, podman, moby
Host Properties
| Property | Container Linux / Flatcar Linux | Fedora CoreOS |
|---|---|---|
| Ignition system | Ignition v2.x spec | Ignition v3.x spec |
| Container Engine | docker | docker |
| storage driver | overlay2 | overlay2 |
| logging driver | json-file | journald |
| cgroup driver | cgroupfs (except Flatcar edge) | systemd |
| Networking | systemd-networkd | NetworkManager |
| Username | core | core |
Kubernetes Properties
| Property | Container Linux | Fedora CoreOS |
|---|---|---|
| single-master | all platforms | all platforms |
| multi-master | all platforms | all platforms |
| control plane | static pods | static pods |
| kubelet image | upstream hyperkube | upstream hyperkube |
| control plane images | upstream hyperkube | upstream hyperkube |
| on-host etcd | rkt-fly | podman |
| on-host kubelet | rkt-fly | podman |
| CNI plugins | calico or flannel | calico or flannel |
| coordinated drain & OS update | CLUO addon | (planned) |
Directory Locations
Typhoon conventional directories.
| Kubelet setting | Host location |
|---|---|
| cni-conf-dir | /etc/kubernetes/cni/net.d |
| pod-manifest-path | /etc/kubernetes/manifests |
| volume-plugin-dir | /var/lib/kubelet/volumeplugins |