allard
77 lines
2.9 KiB
Markdown
Executable File
77 lines
2.9 KiB
Markdown
Executable File
INSTALLATIE:
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- kubectl create namespace monitoring
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Prometheus uses Kubernetes APIs to read all the available metrics from Nodes, Pods, Deployments,
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etc.
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For this reason, we need to create an RBAC policy with read access to required API groups and
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bind the policy to the monitoring namespace.
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In the role you can see that we have added get, list, and watch permissions to
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nodes, services endpoints, pods, and ingresses.
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The role binding is bound to the monitoring namespace. If you have any use case to retrieve
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metrics from any other object, you need to add that in this cluster role.
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- kubectl create -f clusterRole.yaml
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By externalizing Prometheus configs to a Kubernetes config map, you don’t have to build the
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Prometheus image whenever you need to add or remove a configuration.
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You need to update the config map and restart the Prometheus pods to apply the new configuration.
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Configuration files zijn: prometheus.yaml en prometheus.rules, samen verpakt in config-map.yaml.
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- kubectl create -f config-map.yaml
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Above statement creates two files inside the container later:
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kubectl exec -it prometheus-deployment-74dc6c7466-mv8bh /bin/sh -n monitoring
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/prometheus $ ls /etc/prometheus/
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prometheus.rules prometheus.yml
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- kubectl create -f prometheus-deployment.yaml
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- kubectl create -f prometheus-service.yaml
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VOORBEELD:
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op home-page invullen:
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container_cpu_usage_seconds_total
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KUBE STATE METRICS Setup
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Kube state metrics is available as a public docker image. You will have to deploy the following Kubernetes objects for Kube state metrics to work.
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-A Service Account
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-Cluster Role – For kube state metrics to access all the Kubernetes API objects.
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-Cluster Role Binding – Binds the service account with the cluster role.
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-Kube State Metrics Deployment
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-Service – To expose the metrics
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All the above Kube state metrics objects will be deployed in the kube-system namespace
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- kubectl apply -f kube-state-metrics-configs/
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- kubectl get deployments kube-state-metrics -n kube-system
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## ☸️ kubernetes prometheus Setup
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Complete prometheus monitoring stack setup on Kubernetes.
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Idea of this repo to understand all the components involved in prometheus setup.
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You can find the full tutorial from here--> [Kubernetes Monitoting setup Using Prometheus](https://devopscube.com/setup-prometheus-monitoring-on-kubernetes/)
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## 🚀 PCA, CKA, CKAD, CKS or KCNA Voucher Codes/Updates
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If you are preparing for PCA, CKA, CKAD, CKS, or KCNA exam, **save 35%** today using code **DEVOPS35** at https://kube.promo/latest. It is a limited-time offer. Or Check out [Linux Foundation coupon]
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## ✍️ Other Manifest repos
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Kube State metrics manifests: https://github.com/devopscube/kube-state-metrics-configs
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Alert manager Manifests: https://github.com/bibinwilson/kubernetes-alert-manager
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Grafana manifests: https://github.com/bibinwilson/kubernetes-grafana
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Node Exporter manifests: https://github.com/bibinwilson/kubernetes-node-exporter
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