1.21.14-do.0

DigitalOcean Kubernetes (DOKS) is a managed Kubernetes service. Deploy Kubernetes clusters with a fully managed control plane, high availability, autoscaling, and native integration with DigitalOcean Load Balancers and volumes. DOKS clusters are compatible with standard Kubernetes toolchains and the DigitalOcean API and CLI.

• Updates to system components:

  • Updated to kernel to Linux 5.10.120.
    • This is an upgrade from Linux 4.19 on earlier DOKS 1.21 patch versions. This upgrade is necessary to address a limitation in BPF program size on kernels prior to Linux 5.1 that can lead to degraded cluster state where worker nodes are unable to provision new network namespaces for pods.
  • Updated to Kubernetes v1.21.14

• Changes to system components:

  • Disabled Cilium’s eBPF-based NodePort handling in favor of kube-proxy’s as it does not support graceful termination properly in v1.10. (This also disables the eBPF implementations for features depending on NodePort handling in Cilium in favor of kube-proxy, namely host IP and external IP processing.)