docs: Describe how to disable pricing look-ups (#2571)

pkg/utils/options/options.go

@@ -78,7 +78,7 @@ func New() *Options {
 	f.BoolVar(&opts.AWSENILimitedPodDensity, "aws-eni-limited-pod-density", env.WithDefaultBool("AWS_ENI_LIMITED_POD_DENSITY", true), "Indicates whether new nodes should use ENI-based pod density. DEPRECATED: Use `.spec.kubeletConfiguration.maxPods` to set pod density on a per-provisioner basis")
 	f.StringVar(&opts.AWSDefaultInstanceProfile, "aws-default-instance-profile", env.WithDefaultString("AWS_DEFAULT_INSTANCE_PROFILE", ""), "The default instance profile to use when provisioning nodes in AWS")
 	f.BoolVar(&opts.AWSEnablePodENI, "aws-enable-pod-eni", env.WithDefaultBool("AWS_ENABLE_POD_ENI", false), "If true then instances that support pod ENI will report a vpc.amazonaws.com/pod-eni resource")
-	f.BoolVar(&opts.AWSIsolatedVPC, "aws-isolated-vpc", env.WithDefaultBool("AWS_ISOLATED_VPC", false), "If true then assume we can't reach AWS services which don't have a VPC endpoint")
+	f.BoolVar(&opts.AWSIsolatedVPC, "aws-isolated-vpc", env.WithDefaultBool("AWS_ISOLATED_VPC", false), "If true then assume we can't reach AWS services which don't have a VPC endpoint. This also has the effect of disabling look-ups to the AWS pricing endpoint.")
 	return opts
 }
 

website/content/en/preview/tasks/configuration.md

@@ -17,7 +17,7 @@ There are two main configuration mechanisms that can be used to configure Karpen
 | AWS_DEFAULT_INSTANCE_PROFILE | \-\-aws-default-instance-profile | The default instance profile to use when provisioning nodes in AWS|
 | AWS_ENABLE_POD_ENI | \-\-aws-enable-pod-eni | If true then instances that support pod ENI will report a vpc.amazonaws.com/pod-eni resource (default = false)|
 | AWS_ENI_LIMITED_POD_DENSITY | \-\-aws-eni-limited-pod-density | Indicates whether new nodes should use ENI-based pod density. DEPRECATED: Use `.spec.kubeletConfiguration.maxPods` to set pod density on a per-provisioner basis (default = true)|
-| AWS_ISOLATED_VPC | \-\-aws-isolated-vpc | If true then assume we can't reach AWS services which don't have a VPC endpoint (default = false)|
+| AWS_ISOLATED_VPC | \-\-aws-isolated-vpc | If true then assume we can't reach AWS services which don't have a VPC endpoint. This also has the effect of disabling look-ups to the AWS pricing endpoint. (default = false)|
 | AWS_NODE_NAME_CONVENTION | \-\-aws-node-name-convention | The node naming convention used by the AWS cloud provider. DEPRECATION WARNING: this field may be deprecated at any time (default = ip-name)|
 | CLUSTER_ENDPOINT | \-\-cluster-endpoint | The external kubernetes cluster endpoint for new nodes to connect with|
 | CLUSTER_NAME | \-\-cluster-name | The kubernetes cluster name for resource discovery|

website/content/en/preview/troubleshooting.md

@@ -367,3 +367,5 @@ caused by: Post "https://api.pricing.us-east-1.amazonaws.com/": dial tcp 52.94.2
 ```
 This network timeout occurs because there is no VPC endpoint available for the [Price List Query API.](https://docs.aws.amazon.com/awsaccountbilling/latest/aboutv2/using-pelong.html).
 To workaround this issue, Karpenter ships updated on-demand pricing data as part of the Karpenter binary; however, this means that pricing data will only be updated on Karpenter version upgrades.
+To disable pricing lookups and avoid the error messages, set the AWS_ISOLATED_VPC environment variable (or the `--aws-isolated-vpc` option) to true.
+See [Environment Variables / CLI Flags]({{<ref "./tasks/configuration/#environment-variables--cli-flags" >}}) for details.