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Expected infrastructure on self-hosted

Dependencies

  • Docker
  • kubectl
  • Minikube
  • Helm

Run K8s cluster (Minikube)

  1. Run Minikube: 
    minikube start \
    --driver=docker \
    --cpus=12 \
    --memory=16000MB \
    --cni calico \
    --feature-gates="CPUManager=true" \
    --extra-config=kubelet.cpu-manager-policy="static" \
    --extra-config=kubelet.cpu-manager-policy-options="full-pcpus-only=true" \
    --extra-config=kubelet.kube-reserved="cpu=500m"
minikube addons enable metrics-server
minikube addons enable storage-provisioner-rancher
    • CNI Calico is needed to enable Network Policies.
    • Static CPU Manager is needed to allow fixing data nodes to host CPUs; this is an optimization that can be taken advantage of with staticCpuManagerPolicy=true in the values file.
  2. Install infra:
    • Cert-manager: 
      # Installing cert-manager for webhook
kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.14.3/cert-manager.yaml
    • Nginx-Ingress controller: The Ingress requires the nginx Ingress controller to run (admission webhook). 
      helm upgrade --install rondb-ingress-nginx ingress-nginx \
      --repo https://kubernetes.github.io/ingress-nginx \
      --namespace=default
# Additional parameters:
# Setting TCP parameters since raw TCP connections are not supported by default;
# see https://kubernetes.github.io/ingress-nginx/user-guide/exposing-tcp-udp-services/
# These flags will create a ConfigMap with the TCP services and ports to expose.
# No need to also set RDRS HTTP (4406); can be defined in the actual Ingress.
# We need to know the namespace of the RonDB cluster though for this to work.
      --set "tcp.3306"="$K8S_NAMESPACE/mysqld:3306" \
      --set "tcp.5406"="$K8S_NAMESPACE/rdrs:5406"
  3. Add MinIO (to test backup/restore): 
    curl -O https://raw.githubusercontent.com/minio/operator/master/helm-releases/operator-6.0.4.tgz
tar -xzf operator-6.0.4.tgz
helm upgrade -i \
    --namespace minio-operator \
    --create-namespace \
    minio-operator ./operator \
    --set operator.replicaCount=1

# Still needed to instantiate MinIO Tenants
helm repo add minio https://operator.min.io/