Human-Connection Nitro | Deployment Configuration

Currently the deployment is not primetime ready as you still have to do some manual work. That we need to change, the following list gives some glimpse of the missing steps.

Todo`s

• check labels and selectors if they all are correct
• configure NGINX from yml
• configure Let's Encrypt cert-manager from yml
• configure ingress form yml
• configure persistent & shared storage between nodes
• reproduce setup locally

The dummy directory has some lb configurations that did not work properly on Digital Ocean but could be used as a starting point for getting it right

Install Minikube, kubectl

There are many Kubernetes distributions, but if you're just getting started, Minikube is a tool that you can use to get your feet wet.

Install Minikube

Open minikube dashboard

$ minikube dashboard

This will give you an overview. Some of the steps below need some timing to make ressources available to other dependent deployments. Keeping an eye on the dashboard is a great way to check that.

Create a namespace locally

$ kubectl create -f namespace-staging.yml

Switch to the namespace staging in your kubernetes dashboard.

Setup config maps

$ cp db-migration-worker.template.yml config/db-migration-worker.yml
# edit all variables according to the setup of the remote legacy server

$ kubectl apply -f config/

Setup secrets and deploy themn

If you want to edit secrets, you have to base64 encode them. See kubernetes documentation.

# example how to base64 a string:
$ echo -n 'admin' | base64
YWRtaW4=

$ cp secrets.yml.template secrets.yml
# change all variables as needed and deploy them
$ kubectl apply -f secrets.yml

Create volumes

$ kubectl apply -f volumes/

Wait until the persistent volumes get available.

Create deployments

$ kubectl apply -f deployments/

This can take a while because kubernetes will download the docker images. Sit back and relax and have a look into your kubernetes dashboard. Wait until all pods turn green and they don't show a warning Waiting: ContainerCreating anymore.

Expose the services

$ kubectl apply -f services/

Access the services

$ minikube service nitro-web --namespace=staging

Provision db-migration-worker

Copy your private ssh key and the .known-hosts file of your remote legacy server.

# check the corresponding db-migration-worker pod
$ kubectl --namespace=staging get pods
# change <POD_ID> below
$ kubectl cp path/to/your/ssh/keys/.ssh staging/nitro-db-migration-worker-<POD_ID>:/root/

Run the migration:

# change <POD_IDs> below
$ kubectl --namespace=staging exec -it nitro-db-migration-worker-<POD_ID> ./import.sh
$ kubectl --namespace=staging exec -it nitro-neo4j-<POD_ID>               ./import/import.sh