Helm is the package manager for kubernetes just like apt is for ubuntu
Download helm
curl -o /tmp/get-helm.sh https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3
Now install helm:
sudo bash /tmp/get-helm.sh
Then add autocompletion:
echo 'source <(helm completion bash)' >> ~/.bashrc
source ~/.bashrcTo add the Prometheus community repository to Helm so its like adding a new software source in Ubuntu we use the below command
helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
Just like apt packages up everything needed to run software on Ubuntu, Helm packages up all the YAML, configs, RBAC rules and dependencies needed to run something on Kubernetes.
helm repo list
Downloads the latest list of available charts from that repo so its similar to apt update
helm repo update
Install prometheus into namespace monitoring
helm install prometheus prometheus-community/prometheus --namespace monitoring --create-namespace
Run the get pods to see the state of pods
kubectl get pods -A
There are five pods here
| Pod | What it does |
|---|---|
prometheus-server | The main Prometheus — scrapes and stores metrics |
prometheus-alertmanager | Sends alerts when thresholds are breached |
prometheus-node-exporter | Collects host-level metrics — CPU, RAM, disk of the node |
prometheus-kube-state-metrics | Collects cluster-level metrics — pod states, deployments, replicas |
prometheus-pushgateway | Allows batch jobs to push metrics in |
Show me all services in every namespace
kubectl get svc -A
awx-service—NodePort—80:30080that’s why you access AWX on port 30080openclaw—NodePort—18789:30789— accessible on 30789traefik—LoadBalancer— has external IP172.16.11.121- IP
prometheus-server—ClusterIP— no external access yet
Now edit the prometheus-server service so we can get external access.
kubectl get svc prometheus-server -n monitoring -o yaml > /tmp/prometheus-svc.yaml
Open the file
Change type from cluster port to node port and also expose 30090 for prometheus
Apply the pod config
kubectl apply -f /tmp/prometheus-svc.yamlShow me all services in every namespace and port
Then open browser to http://172.16.11.121:30090 and our Prometheus is now ready.
Prometheus Query Language is known as PromQL so we can just run quick querry using up.
Lets check our compute on our AWX namespace by running
- container_memory_usage_bytes{namespace=”awx”}
- container_cpu_usage_seconds_total{namespace=”awx”}
That shows the usage of my AWX pods
