Create a unique Join Key

By default the chart will also set a Join Key value for you. For a production environment we highly recommend setting a unique value.

# Create a join key
export JOIN_KEY=$(openssl rand -hex 32)
echo ${JOIN_KEY}

Create a secret containing the key. The key in the secret must be named join-key

$ kubectl create secret generic joinkey-secret --from-literal=join-key=${JOIN_KEY}