Installation

How to install or uninstall Kapacity

Prerequisites

Kubernetes 1.16+ (1.22+ recommended)
Helm 3

Install

Install cert-manager


helm repo add jetstack https://charts.jetstack.io
helm repo update

helm install \
  cert-manager jetstack/cert-manager \
  --namespace cert-manager \
  --create-namespace \
  --set installCRDs=true

Install Prometheus

Install Prometheus with kube-state-metrics by Helm.


helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
helm repo update

helm install \
  prometheus prometheus-community/prometheus \
  --namespace prometheus \
  --create-namespace \
  --set alertmanager.enabled=false \
  --set prometheus-node-exporter.enabled=false \
  --set prometheus-pushgateway.enabled=false

Run following command to view Prometheus Server’s ClusterIP and port:


kubectl get svc -n prometheus prometheus-server


NAME                TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)   AGE
prometheus-server   ClusterIP   10.104.214.48   <none>        80/TCP    5m

Install Kapacity

Install Kapacity by Helm. The Prometheus Server address params are those got in previous step.


helm repo add kapacity https://traas-stack.github.io/kapacity-charts
helm repo update

helm install \
  kapacity-manager kapacity/kapacity-manager \
  --namespace kapacity-system \
  --create-namespace \
  --set prometheus.address=http://<prometheus-server-clusterip>:<prometheus-server-port>

Verify Kapacity installation


kubectl get deploy -n kapacity-system


NAME               READY   UP-TO-DATE   AVAILABLE   AGE
kapacity-manager   1/1     1            1           5m

Uninstall


helm uninstall kapacity-manager -n kapacity-system
helm uninstall prometheus -n prometheus
helm uninstall cert-manager -n cert-manager