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Yotascale’s Kubernetes Integration requires the installation of an agent, which is essentially a Kubernetes POD, in each of your clusters that you want onboarded onto Yotascale. This document describes how to install the agent onto your cluster along with . The document also lists some pre-requisites that are required for it to function as required by Yotascale.
Follow the steps below for installing the agent onto each of your Kubernetes clusters.
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Step 1: Download the Deployment Descriptor
Click Login to Yotascale and click on Manage Cloud Services from the Settings menu
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kubectl logs -l app=yotascale-kubernetes-agent -n yotascale |
Metric Ingestion from Prometheus
The Yotascale Kubernetes Agent assumes the existence of a Prometheus installation for your cluster. Furthermore, it assumes that Prometheus is scraping kube-state-metrics and cAdvisor, two common tools for capturing cluster and container level metrics.
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The Yotascale agent uses the following metrics:
kube-state-metrics Metrics
The following metrics enable Yotascale to build a layout of your Kubernetes cluster, determine relationship between various Kubernetes objects and understand resource requirements.
Metric Name | Description |
|---|---|
kube_node_info | Provides information on the nodes running in the cluster. This includes the "provider id" which contains the resource id of the AWS EC2 instance which corresponds to the kubernetes node. |
kube_node_labels | Provides information about the node such as the instance type e.g c4.xlarge, the region, the availability zone, the os and the role (master/node) |
kube_pod_info | Provides information on the pods running on the clusters including the name of the nodes the pods are running on |
kube_pod_container_info | Provides information on the containers running under each pod. |
kube_pod_container_resource_requests_memory_bytes | Requested memory for the container |
kube_pod_container_resource_requests_cpu_cores | Requested CPU cores for the container |
kube_pod_container_resource_limits_memory_bytes | Upper limit usage for memory usage for the container |
kube_pod_container_resource_limits_cpu_cores | Upper limit usage for CPU cores for the container |
kube_deployment_labels | The list of deployments and their basic metadata such as namespace |
kube_replicaset_owner | Name of the deployment that creates each replica set. |
kube_pod_owner | Name of the replica set or daemon set that creates each pods |
kube_hpa_labels | Identify the HPA. Map to namespace. |
kube_hpa_spec_max_replicas | Max Replicas configured in the HPA |
kube_hpa_spec_min_replicas | Min Replicas configured in the HPA |
cAdvisor Metrics
The following metrics enable Yotascale determine actual resource usage for each of your containers.
Metric Name | Description |
|---|---|
container_memory_usage_bytes | Actual memory usage by a container |
container_cpu_usage_seconds_total | Actual CPU core usage by a container |