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# 1.20.8-do.0

DigitalOcean Kubernetes (DOKS) is a Kubernetes service with a fully managed control plane, high availability, and autoscaling. DOKS integrates with standard Kubernetes toolchains and DigitalOcean’s load balancers, volumes, CPU and GPU Droplets, API, and CLI.

- Upgrades to system components:

  - Updated to [Kubernetes v1.20.8](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.20.md#v1208)
  - Updated to [CoreDNS v1.8.4](https://github.com/coredns/coredns/releases/tag/v1.8.4)
  - Updated CSI driver sidecars:

    - Updated to [external-provisioner v2.2.1](https://github.com/kubernetes-csi/external-provisioner/releases/tag/v2.2.1)
    - Updated to [external-attacher v3.2.1](https://github.com/kubernetes-csi/external-attacher/releases/tag/v3.2.1)
    - Updated to [external-snapshotter v3.0.3](https://github.com/kubernetes-csi/external-snapshotter/releases/tag/v3.0.3)
    - Updated to [external-resizer v1.2.0](https://github.com/kubernetes-csi/external-resizer/releases/tag/v1.2.0)
  - Updated to [DO CCM v0.1.33](https://github.com/digitalocean/digitalocean-cloud-controller-manager/releases/tag/v0.1.33)
  - Updated to [Linux kernel-image-4.19.0-17-amd64](https://packages.debian.org/buster/kernel-image-4.19.0-17-amd64-di), which includes the `target_core_mod` module that was missing from previous releases
- Raised `pid_max` to 4,194,304 to help avoid PID exhaustion on large workers
- Configured [PID and CPU reservations](https://kubernetes.io/docs/tasks/administer-cluster/reserve-compute-resources/#kube-reserved) for system components to improve node stability
- Renamed the managed `kube-state-metrics` ServiceAccount to avoid conflicts with customer installations of kube-state-metrics. Upgraded clusters will retain the `kube-state-metrics` ServiceAccount, but it can be safely removed.