53 lines
2.5 KiB
Markdown
53 lines
2.5 KiB
Markdown
# Security
|
|
|
|
Typhoon aims to be minimal and secure. We're running it ourselves after all.
|
|
|
|
## Overview
|
|
|
|
**Kubernetes**
|
|
|
|
* etcd with peer-to-peer and client-auth TLS
|
|
* Generated kubelet TLS certificates and `kubeconfig` (365 days)
|
|
* [Role-Based Access Control](https://kubernetes.io/docs/admin/authorization/rbac/) is enabled. Apps must define RBAC policies
|
|
* Workloads run on worker nodes only, unless they tolerate the master taint
|
|
* Kubernetes [Network Policy](https://kubernetes.io/docs/concepts/services-networking/network-policies/) and Calico [NetworkPolicy](https://docs.projectcalico.org/latest/reference/calicoctl/resources/networkpolicy) support [^1]
|
|
|
|
[^1]: Requires `networking = "calico"`. Calico is the default on AWS, bare-metal, and Google Cloud. Azure and Digital Ocean are limited to `networking = "flannel"`.
|
|
|
|
**Hosts**
|
|
|
|
* Container Linux auto-updates are enabled
|
|
* Hosts limit logins to SSH key-based auth (user "core")
|
|
|
|
**Platform**
|
|
|
|
* Cloud firewalls limit access to ssh, kube-apiserver, and ingress
|
|
* No cluster credentials are stored in Matchbox (used for bare-metal)
|
|
* No cluster credentials are stored in Digital Ocean metadata
|
|
* Cluster credentials are stored in AWS metadata (for ASGs)
|
|
* Cluster credentials are stored in Azure metadata (for scale sets)
|
|
* Cluster credentials are stored in Google Cloud metadata (for managed instance groups)
|
|
* No account credentials are available to Digital Ocean droplets
|
|
* No account credentials are available to AWS EC2 instances (no IAM permissions)
|
|
* No account credentials are available to Azure instances (no IAM permissions)
|
|
* No account credentials are available to Google Cloud instances (no IAM permissions)
|
|
|
|
## Precautions
|
|
|
|
Typhoon limits exposure to many security threats, but it is not a silver bullet. As usual,
|
|
|
|
* Do not run untrusted images or accept manifests from strangers
|
|
* Do not give untrusted users a shell behind your firewall
|
|
* Define network policies for your namespaces
|
|
|
|
## OpenPGP Signing
|
|
|
|
Typhoon uses upstream container images and binaries. We do not distribute artifacts of our own, except where required for system container images ([etcd](https://quay.io/repository/poseidon/etcd), [kubelet](https://quay.io/repository/poseidon/kubelet), [bootkube](https://quay.io/repository/poseidon/bootkube)) for Fedora Atomic only.
|
|
|
|
If you find artifacts claiming to be from Typhoon, please send a note.
|
|
|
|
## Disclosures
|
|
|
|
If you find security issues, please email dghubble at gmail. If the issue lies in upstream Kubernetes, please inform upstream Kubernetes as well.
|
|
|