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

Minikube

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.

Access exposed services

Follow the installation instruction below. Just at the end, expose the nitro-web service on your host system with:

$ minikube service nitro-web --namespace=staging

Digital Ocean

Install the kubernetes dashboard first:

$ kubectl apply -f dashboard/

Proxy localhost to the remote kubernetes dashboard:

kubectl proxy

Get your token on the command line:

$ kubectl -n kube-system describe secret $(kubectl -n kube-system get secret | grep admin-user | awk '{print $1}')

It should print something like:

Name:         admin-user-token-6gl6l
Namespace:    kube-system
Labels:       <none>
Annotations:  kubernetes.io/service-account.name=admin-user
              kubernetes.io/service-account.uid=b16afba9-dfec-11e7-bbb9-901b0e532516

Type:  kubernetes.io/service-account-token

Data
====
ca.crt:     1025 bytes
namespace:  11 bytes
token:      eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJrdWJlcm5ldGVzL3NlcnZpY2VhY2NvdW50Iiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9uYW1lc3BhY2UiOiJrdWJlLXN5c3RlbSIsImt1YmVybmV0ZXMuaW8vc2VydmljZWFjY291bnQvc2VjcmV0Lm5hbWUiOiJhZG1pbi11c2VyLXRva2VuLTZnbDZsIiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9zZXJ2aWNlLWFjY291bnQubmFtZSI6ImFkbWluLXVzZXIiLCJrdWJlcm5ldGVzLmlvL3NlcnZpY2VhY2NvdW50L3NlcnZpY2UtYWNjb3VudC51aWQiOiJiMTZhZmJhOS1kZmVjLTExZTctYmJiOS05MDFiMGU1MzI1MTYiLCJzdWIiOiJzeXN0ZW06c2VydmljZWFjY291bnQ6a3ViZS1zeXN0ZW06YWRtaW4tdXNlciJ9.M70CU3lbu3PP4OjhFms8PVL5pQKj-jj4RNSLA4YmQfTXpPUuxqXjiTf094_Rzr0fgN_IVX6gC4fiNUL5ynx9KU-lkPfk0HnX8scxfJNzypL039mpGt0bbe1IXKSIRaq_9VW59Xz-yBUhycYcKPO9RM2Qa1Ax29nqNVko4vLn1_1wPqJ6XSq3GYI8anTzV8Fku4jasUwjrws6Cn6_sPEGmL54sq5R4Z5afUtv-mItTmqZZdxnkRqcJLlg2Y8WbCPogErbsaCDJoABQ7ppaqHetwfM_0yMun6ABOQbIwwl8pspJhpplKwyo700OSpvTT9zlBsu-b35lzXGBRHzv5g_RA

Grab the token and paste it into the login screen at http://localhost:8001/api/v1/namespaces/kube-system/services/https:kubernetes-dashboard:/proxy/

Installation with kubernetes (minikube + Digital Ocean)

You have to do some prerequisites and change some secrets according to your own setup.

Setup config maps

$ cp db-migration-worker.template.yml staging/config/db-migration-worker.yml

Edit all variables according to the setup of the remote legacy server.

Setup secrets and deploy themn

$ cp secrets.yml.template staging/secrets.yml

Change all secrets as needed.

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=

Those secrets get base64 decoded in a kubernetes pod.

Create a namespace locally

$ kubectl create -f namespace-staging.yml

Switch to the namespace staging in your kubernetes dashboard.

Run the configuration

$ cd staging/
$ kubectl apply -f secrets.yml
$ kubectl apply -f config/
$ kubectl apply -f volumes/
$ kubectl apply -f services/
$ 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.

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