kube-metrics-server

Ansible role to deploy metrics server on a Kubernetes cluster.

Deployment

This role assumes that:

1. You have kubectl installed on your local machine
2. You have a valid kubeconfig with full privileges for your target cluster
3. You have configured aggregator routing and requestheader settings in your kube-apiserver
4. The required certificate files are present in your local machine under the directories that you have specified (see below)

Variables

Name	Default value	Description
kube_metrics_server_version	v0.3.6	The version of the metrics-server.
kube_metrics_server_kubeconfig	~/.kube/config	Path to the kubeconfig to use.
kube_metrics_server_resource_state	present	The state of the metrics-server (present, absent, etc.)
kube_metrics_server_certfile	/tmp/metrics-server.cert	Certificate signed by Requestheader CA for metrics-server.
kube_metrics_server_keyfile	/tmp/metrics-server.key	Private key for metrics-server certificate.
kube_metrics_server_requestheader_client_ca	/tmp/kube-requestheader-ca.cert	Requestheader CA file used by kube-apiserver and metrics-server.
kube_metrics_server_kubelet_cafile	/tmp/kubelet-ca.cert	Kubelet CA file, used to connect to nodes to get metrics.
kube_metrics_server_metric_resolution	10s	The polling resolution of the metrics-server.
kube_metrics_server_verbosity	2	Verbosity level of metrics-server for logging.

Resources

metrics-server GitHub repository

Kubernetes documentation on aggegation layer