Knowledgearc k8s cluster

Prerequisites

Install kops

Linux

wget -O /usr/local/bin/kops https://github.com/kubernetes/kops/releases/download/1.7.0/kops-linux-amd64
sudo chmod +x /usr/local/bin/kops

macOS

    brew update && brew install kops

Install kubectl

Linux

    wget -O /usr/local/bin/kubectl https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl
    sudo chmod +x /usr/local/bin/kubectl

macOS

    brew install kubectl

Install awscli

    pip install awscli

Deploying a DSpace Instance

cd knowledgearc-kubernetes
echo "Organisation name:"
read NAME
envsubst < namespaces/namespace.yml | kubectl apply -f -
PASSWORD=`openssl rand -hex 16 | base64 | tr -d "\n"` envsubst < secrets/postgres.txt |  kubectl apply -f -
envsubst < secrets/aws.yml | kubectl apply -f -
envsubst < services/postgres.yml | kubectl apply -f -
envsubst < services/dspace.yml | kubectl apply -f -
envsubst < statefulsets/postgres.yml | kubectl apply -f -
envsubst < statefulsets/dspace.yml | kubectl apply -f -

Deleting a DSpace Instance

export NAME=who
envsubst < namespaces/namespace.yml | kubectl delete -f -
# Deleting a namespace will delete all the resources under it

# To delete individual instances for testing
kubectl delete secrets $NAME
envsubst < secrets/aws-bootstrap-creds.yml | kubectl delete -f -
envsubst < services/postgres.yml | kubectl delete -f -
envsubst < services/dspace.yml | kubectl delete -f -
envsubst < statefulsets/postgres.yml | kubectl delete -f -
envsubst < statefulsets/dspace.yml | kubectl delete -f -

Deploying a Kubernetes cluster on AWS with kops

1. Create an S3 bucket to store state

aws s3api create-bucket --bucket kops-knowledgearc-state-store --region eu-west-1 --create-bucket-configuration LocationConstraint=eu-west-1

2. Enable versioning for the bucket

aws s3api put-bucket-versioning --bucket kops-knowledgearc-state-store  --versioning-configuration Status=Enabled

3. Set the name of the cluster

export NAME=knowledgearc.k8s.local

4. Set the storage bucket

export KOPS_STATE_STORE=s3://kops-knowledgearc-state-store

5. Create the cluster configuration

kops create cluster --zones=eu-west-1a --name=$NAME\
                            --node-count=2 --node-size=t2.small --master-size=t2.small

6. Actually create the cluster

kops update cluster $NAME --yes