System requirements#
Verify that your environment meets the system requirements for k0s.
Hardware#
The minimum hardware requirements for k0s detailed below are approximations and thus results may vary.
| Role | Virtual CPU (vCPU) | Memory (RAM) |
|---|---|---|
| Controller node | 1 vCPU (2 recommended) | 1 GB (2 recommended) |
| Worker node | 1 vCPU (2 recommended) | 0.5 GB (1 recommended) |
| Controller + worker | 1 vCPU (2 recommended) | 1 GB (2 recommended) |
Note: Use an SSD for optimal storage performance (cluster latency and throughput are sensitive to storage).
The specific storage consumption for k0s is as follows:
| Role | Storage (k0s part) |
|---|---|
| Controller node | ~0.5 GB |
| Worker node | ~1.3 GB |
| Controller + worker | ~1.7 GB |
Note: The operating system and application requirements must be considered in addition to the k0s part.
Host operating system#
- Linux (kernel v3.10 or later)
- Windows Server 2019
Architecture#
- x86-64
- ARM64
- ARMv7
Networking#
For information on the ports that k0s needs to function, refer to networking.
OS dependencies#
In most cases k0s does NOT have any OS level dependencies. The needed kernel configurations are documented here.