Dapr System Installation

🟢 Management

Dapr is a portable, event-driven, runtime for building distributed applications across cloud and edge.

Opstella is backed by Dapr as its backing service for Microservices Connection and Meshing.

Prerequisites

• 💿Persistence Storage Access for Dapr System
  • On Kubernetes when requesting for a PVC, will request with Storage Class specified.

Preparation

Kubernetes Cluster Preparation

1. Connect to 🟢 Management Kubernetes Cluster ; i.e w/ Kubeconfig File

   export KUBECONFIG="$HOME/opstella-installation/kubeconfigs/management_cluster.yaml"

2. Prepare 🟢 Management Kubernetes Cluster Information

   Ensure K8S_INTERNAL_DOMAIN, K8S_STORAGECLASS_NAME are defined as per the Shell Variables guide.

---

Dapr Preparation

1. Create Helm Values Configurations

   cat <<EOF > $HOME/opstella-installation/helm-values/dapr-full-values.yaml
   # Application: Dapr Chart Global Variables
   global:
     # Application: Handling Kubernetes Domain Name
     dnsSuffix: ".${K8S_INTERNAL_DOMAIN}"
     # Application: Handling Kubernetes Secuity Compliance
     seccompProfile: RuntimeDefault
     # Application: Production guidelines on Kubernetes for Dapr; See More https://docs.dapr.io/operations/hosting/kubernetes/kubernetes-production/
     priorityClassName: system-cluster-critical
     ha:
       enabled: true
   
   dapr_sidecar_injector:
     # Application/OPSTELLA_CUSOMIZE: Handling Kubernetes Secuity Compliance
     kubeClusterDomain: ${K8S_INTERNAL_DOMAIN}
     sidecarDropALLCapabilities: true
   
   dapr_scheduler:
     cluster:
       storageClassName: ${K8S_STORAGECLASS_NAME}
   
   dapr_placement:
     cluster:
       forceInMemoryLog: true
   
   EOF

Installation

1. Add Dapr Helm Repository

   # Add Helm Repository
   helm repo add dapr https://dapr.github.io/helm-charts/
   helm repo update

2. Install Dapr

   • Install a Helm Release with specific Helm Chart Version --version 1.14.1 (App Version: 1.14.1)

     # Install Dapr Helm Release
     helm install opstella-dapr dapr/dapr --version 1.14.1 \
       --namespace dapr-system \
       -f $HOME/opstella-installation/helm-values/dapr-full-values.yaml

Post-Installation

Dapr Testing

1. Get Pod Status - Dapr

   kubectl get pods -n dapr-system

   Dapr should be Running

   NAME                                   READY   STATUS    RESTARTS   AGE
   ... (deducted)
   dapr-placement-server-0                1/1     Running   0          XdXh
   dapr-placement-server-1                1/1     Running   0          XdXh
   dapr-placement-server-2                1/1     Running   0          XdXh
   dapr-scheduler-server-0                1/1     Running   0          XdXh
   dapr-scheduler-server-1                1/1     Running   0          XdXh
   dapr-scheduler-server-2                1/1     Running   0          XdXh
   dapr-sentry-XXXXXXX-YYYYY              1/1     Running   0          XdXh
   dapr-sentry-XXXXXXX-YYYYY              1/1     Running   0          XdXh
   dapr-sentry-XXXXXXX-YYYYY              1/1     Running   0          XdXh
   dapr-sidecar-injector-XXXXXXX-YYYYY    1/1     Running   0          XdXh
   dapr-sidecar-injector-XXXXXXX-YYYYY    1/1     Running   0          XdXh
   dapr-sidecar-injector-XXXXXXX-YYYYY    1/1     Running   0          XdXh
   dapr-operator-XXXXXXX-YYYYY            1/1     Running   0          XdXh
   dapr-operator-XXXXXXX-YYYYY            1/1     Running   0          XdXh
   dapr-operator-XXXXXXX-YYYYY            1/1     Running   0          XdXh