Deckhouse Platform on Selectel (OpenStack): Preparing environment

1
Selecting infrastructure
2
Installation information
3
Preparing environment
4
Installation
5
Getting access to the cluster
6
What can I do next?
Preparing environment

Installation of Deckhouse Platform on Selectel (OpenStack) is only possible in the Enterprise Edition. See information about commercial editions.

Before installation, ensure the following:

  • Cloud provider quotas for cluster deployment.
  • The cloud-init package is installed on the VMs. After the VM starts, services cloud-config.service, cloud-final.service, cloud-init.service must be running.
  • The virtual machine template contains only one disk.

Additional requirements and notes

  • For ContainerdV2 on cluster nodes, the OS on virtual machines must meet the requirements:
    • Linux kernel version 5.8 or newer, except for the ranges 6.12.0–6.12.28 or 6.14.0–6.14.6 (these versions are affected by CVE-2025-37999 in EROFS);
    • CgroupsV2 support;
    • Systemd version 244 or newer;
    • erofs kernel module support.

    For more information, see the ClusterConfiguration resource.

  • From version 1.74, Deckhouse Platform has a module integrity control mechanism (protection against replacement and modification). It turns on automatically when the OS on the nodes supports the erofs kernel module. Without it, Deckhouse Platform runs as before but the mechanism is off — an alert will indicate it is unavailable.

Prepare the Selectel environment so that Deckhouse Platform can manage cloud resources. The full procedure is described on the environment preparation page of the cloud-provider-openstack module.

Create a service account and download the openrc file. The data from the openrc file will be required further to fill in the provider section in the Deckhouse Platform configuration.

To create a node with the CloudEphemeral type in a Selectel zone other than zone A, first create a flavor with a disk of the required size. In this case, do not set the rootDiskSize parameter.

Example of creating a flavor...

openstack flavor create c4m8d50 --ram 8192 --disk 50 --vcpus 4 --private
Go back Next: Installation