Operating system
Host OS Configuration
You can configure certain host OS settings through EKS Anywhere.
Provider support details
vSphere | Bare Metal | Nutanix | CloudStack | Snow | |
---|---|---|---|---|---|
Supported? | ✓ | ✓ |
Note
Settings underbottlerocketConfiguration
are only supported for osFamily: bottlerocket
The following cluster spec shows an example of how to configure host OS settings:
apiVersion: anywhere.eks.amazonaws.com/v1alpha1
kind: VSphereMachineConfig # Replace "VSphereMachineConfig" with "TinkerbellMachineConfig" for Tinkerbell clusters
metadata:
name: machine-config
spec:
...
hostOSConfiguration:
ntpConfiguration:
servers:
- time-a.ntp.local
- time-b.ntp.local
certBundles:
- name: "bundle_1"
data: |
-----BEGIN CERTIFICATE-----
MIIF1DCCA...
...
es6RXmsCj...
-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----
...
-----END CERTIFICATE-----
bottlerocketConfiguration:
kubernetes:
allowedUnsafeSysctls:
- "net.core.somaxconn"
- "net.ipv4.ip_local_port_range"
clusterDNSIPs:
- 10.96.0.10
maxPods: 100
kernel:
sysctlSettings:
net.core.wmem_max: "8388608"
net.core.rmem_max: "8388608"
...
boot:
bootKernelParameters:
slub_debug:
- "options,slabs"
...
Host OS Configuration Spec Details
hostOSConfiguration
Top level object used for host OS configurations.
-
ntpConfiguration
Key used for configuring NTP servers on your EKS Anywhere cluster nodes.
-
Servers is a list of NTP servers that should be configured on EKS Anywhere cluster nodes.servers
-
-
certBundles
Key used for configuring custom trusted CA certs on your EKS Anywhere cluster nodes. Multiple cert bundles can be configured.
Note
This setting is _only valid_ for Botlerocket OS.
-
name
Name of the cert bundle that should be configured on EKS Anywhere cluster nodes. This must be a unique name for each entry
-
data
Data of the cert bundle that should be configured on EKS Anywhere cluster nodes. This takes in a PEM formatted cert bundle and can contain more than one CA cert per entry.
-
-
bottlerocketConfiguration
Key used for configuring Bottlerocket-specific settings on EKS Anywhere cluster nodes. These settings are only valid for Bottlerocket.
-
kubernetes
- DEPRECATEDKey used for configuring Bottlerocket Kubernetes settings.
-
allowedUnsafeSysctls
List of unsafe sysctls that should be enabled on the node.
-
clusterDNSIPs
List of IPs of DNS service(s) running in the kubernetes cluster.
-
maxPods
Maximum number of pods that can be scheduled on each node.
-
-
kernel
Key used for configuring Bottlerocket Kernel settings.
-
Map of kernel sysctl settings that should be enabled on the node.sysctlSettings
-
-
boot
Key used for configuring Bottlerocket Boot settings.
Note
This setting has not been validated for baremetal.
-
Map of Boot Kernel parameters Bottlerocket should configure.bootKernelParameters
-
-