Tarook

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tarook@lists.alasca.cloud

October 2026

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Release v15.0.0 has been published

by Steve Starke

Hi! We're happy to announce that Tarook v15.0.0 [1][2] has been published! Some notable changes, amongst others: * Calico is now deployed in eBPF dataplane mode. o Clusters with IPv6 enabled previously were configured to use the ipvs mode of kube-proxy which got deprecated with Kubernetes v1.35 [3]. Due to that deprecation, changes to the CNI setup were necessary. Calico's eBPF dataplane mode has been chosen due to its performance benefits. A migration path for existing clusters has been implemented. o kube-proxy is disabled by default now as it interferes with Calico running in eBPF dataplane mode. * When upgrading an existing cluster to this release, changes to the cluster repository's flake.nix are necessary. * The necessary changes for Ubuntu 26.04 have been implemented. * Routes to the Kubernetes Service IP range are propagated by Calico to BGP peers by default now. * Components of the monitoring stack can now be freely configured. * Support for Envoy Gateway as Gateway API integration has been added. o A migration for clusters already using the Calico Ingress Gateway has been implemented. * The "sntrup761x25519-sha512" post-quantum key exchange algorithm has been enabled for SSH. Some notable changes specifically for clusters on OpenStack or Proxmox: * The bird setup has been made compatible with bird3. Debian 13 can now be used for gateway nodes. * OpenStack Anti-Affinity-Groups can now be configured for any node. * Support for IPSec has been dropped. Check out the release notes [4] to get information about all the other changes and for more details! Best regards --- [1] https://gitlab.com/alasca.cloud/tarook/tarook/-/releases/v15.0.0 [2] https://meta.docs.tarook.cloud/supported_releases [2] https://kubernetes.io/blog/2025/12/17/kubernetes-v1-35-release/#deprecation… [3] https://docs.tarook.cloud/release/v15.0/releasenotes -- Steve Starke Team Lead Kubernetes Cloud&Heat Technologies GmbH Königsbrücker Straße 96 | 01099 Dresden +49 351 479 367 00 steve.starke(a)cloudandheat.com |www.cloudandheat.com Green, Open, Efficient. Your Cloud Service and Cloud Technology Provider from Dresden. https://www.cloudandheat.com/ Commercial Register: District Court Dresden Register Number: HRB 30549 VAT ID No.: DE281093504 Managing Director: Nicolas Röhrs Authorized signatory: Dr. Marius Feldmann

Oct. 20, 2026