--- title: "Kubernetes plugins (CNI, CRI, CSI...), software versions, and reserved resources" description: "Currently, we support the following Kubernetes releases:" url: https://docs.us.ovhcloud.com/en/public-cloud/managed-kubernetes/plugins-software-versions-reserved-resources lang: en --- > For AI agents: the complete documentation index is available at https://docs.us.ovhcloud.com/en/llms.txt, the full documentation bundle is available at https://docs.us.ovhcloud.com/en/llms-full.txt. # Kubernetes plugins (CNI, CRI, CSI...), software versions, and reserved resources ### Kubernetes versions Currently, we support the following Kubernetes releases: - `1.31` - `1.32` - `1.33` - `1.34` - `1.35` If you run a Managed Kubernetes Service using an older version, we strongly encourage you to use the [version upgrade feature](https://docs.us.ovhcloud.com/en/public-cloud/managed-kubernetes/upgrading-version.md) to receive official support for your cluster. You will find more details about our [End-of-Sale, End-of-Service, and End-of-Life Policies](https://docs.us.ovhcloud.com/en/public-cloud/managed-kubernetes/eos-eol-policies.md) in the dedicated section. We will closely follow the Kubernetes releases, and new versions will be regularly available.   ### OS, kernel, and Docker versions The OS, kernel, and Docker daemon versions on your nodes will be regularly updated. The current versions are: - OS: Ubuntu 22.04 LTS - Kernel: 5.15-generic - Docker: 23.0.1   ### CRI (Container Runtime Interface) We use **containerd** as the default CRI: - `1.31`: 2.1.4 - `1.32`: 2.1.4 - `1.33`: 2.1.4 - `1.34`: 2.1.4 - `1.35`: 2.2.1   ### CNI (Cluster Network Interface) The CNI plugin installed is [canal](https://github.com/projectcalico/canal), which embeds [calico](https://github.com/projectcalico/calico) for policy and [flannel](https://github.com/coreos/flannel/) for networking. The versions installed depend on the Kubernetes version: - `1.31`: calico v3.29.1, flannel v0.24.4 - `1.32`: calico v3.29.1, flannel v0.24.4 - `1.33`: calico v3.30.1, flannel v0.24.4 - `1.34`: calico v3.30.1, flannel v0.24.4 - `1.35`: calico v3.31.4, flannel v0.24.4   ### CCM (Cloud-Controller-Manager) Our cloud-controller-manager (CCM) is based on the OpenStack cloud-controller-manager (OpenStackCCM) available in the [Cloud provider OpenStack](https://github.com/kubernetes/cloud-provider-openstack) repository. - `1.31`: OVH IOLB CCM based on OpenStackCCM 1.18, OVH Octavia CCM based on OpenStackCCM 1.29 - `1.32`: OVH Octavia CCM based on OpenStackCCM 1.29 - `1.33`: OVH Octavia CCM based on OpenStackCCM 1.33 - `1.34`: OVH Octavia CCM based on OpenStackCCM 1.33 - `1.35`: OVH Octavia CCM based on OpenStackCCM 1.33   ### CSI (Container Storage Interface) The CSI plugin installed is [Cinder](https://github.com/kubernetes/cloud-provider-openstack). The versions depend on the Kubernetes cluster version: - `1.31`: csi-plugin v1.29.0, csi-attacher v4.10.0, csi-provisioner v5.3.0, csi-snapshotter v6.3.3, snapshot-controller: v8.3.0, csi-resizer v1.14.0 - `1.32`: csi-plugin v1.29.0, csi-attacher v4.10.0, csi-provisioner v5.3.0, csi-snapshotter v6.3.3, snapshot-controller: v8.3.0, csi-resizer v1.14.0 - `1.33`: csi-plugin v1.29.0, csi-attacher v4.10.0, csi-provisioner v5.3.0, csi-snapshotter v6.3.3, snapshot-controller: v8.3.0, csi-resizer v1.14.0 - `1.34`: csi-plugin v1.29.0, csi-attacher v4.10.0, csi-provisioner v5.3.0, csi-snapshotter v6.3.3, snapshot-controller: v8.3.0, csi-resizer v1.14.0 - `1.35`: csi-plugin v1.3.0, csi-attacher v4.10.0, csi-provisioner v5.3.0, csi-snapshotter v6.3.3, snapshot-controller: v8.3.0, csi-resizer v1.14.0   ### Other components The versions are: - `1.31`: coredns v1.12.4, metrics-server v0.8.0 - `1.32`: coredns v1.12.4, metrics-server v0.8.0 - `1.33`: coredns v1.12.4, metrics-server v0.8.0 - `1.34`: coredns v1.12.4, metrics-server v0.8.0 - `1.35`: coredns v1.14.1, metrics-server v0.8.1   ### Enabled policies - [Network policies](https://kubernetes.io/docs/concepts/services-networking/network-policies/) - [Resource quotas](https://kubernetes.io/docs/concepts/policy/resource-quotas/) - [Limit range](https://kubernetes.io/docs/concepts/policy/limit-range/) #### Authorization modes: - [Node](https://kubernetes.io/docs/reference/access-authn-authz/node/): Authorize API requests made by Kubelets. - [RBAC](https://kubernetes.io/docs/reference/access-authn-authz/rbac/): Role-Based Access Control is a method of regulating access to computer or network resources based on the roles of individual users within an organization. #### Feature gates: - `TTLAfterFinished`: Allow a TTL controller to clean up resources after they finish execution. (enabled by default for `v1.23+`, parameter removed in `v1.25`) #### Kubelet - `protect-kernel-defaults`: Protect tuned kernel parameters from overriding kubelet default kernel parameter values.   ### Reserved resources Each worker node has a certain amount of CPU, RAM, and storage reserved for Kubernetes components. These reserved quotas may evolve in the future; the page will be updated accordingly. To guarantee the availability of a customer’s node, the amount of reserved resources depends on the instance flavor. - **CPU** reservation is defined through this formula:\ \> 15 % of 1CPU+ 0,5% of all CPU cores - **RAM** reservation is a constant:\ \> 1590MB - **Storage **reservation is defined through this formula:\ \> log10 (total storage in GB) \* 10 + 10% of total storage **Note:** You can view the vCores, Total RAM, and Total Storage for each instance flavor [here](https://us.ovhcloud.com/public-cloud/prices/#16640).   ## Go further Browse all the [Managed Kubernetes Service (MKS) guides](https://docs.us.ovhcloud.com/en/public-cloud/managed-kubernetes/landing-page-managed-kubernetes.md). Browse the rest of the [OVHcloud US documentation](https://docs.us.ovhcloud.com/en/index.md) for guides on our other products and services. Learn more about [Managed Kubernetes](https://us.ovhcloud.com/public-cloud/kubernetes/) on the OVHcloud US website.