# Know your Nexus docker repository url
ex: http://docker.box:8081/

# Know your Nexus connector port. Use the port that you specified in Nexus under "Create an HTTP connector at specified port. Normally used if the server is behind a secure proxy", ex: 8123. This is different than your main web interface Nexus port, ex: 8081.

# Know your non-admin login into Nexus
ex: mavenbuilds:secretpassword

# base64 the login:password string
echo "mavenbuilds:secretpassword" | base64

# copy this authentication string, ex: "ABc2394FL32iff20aeERL==" and use it in the next step

# create a new auths directive line using the following format:
echo -n '{"auths":{"docker.box:8123":{"auth":"ABc2394FL32iff20aeERL=="}}}' | base64

# save this string, and use it in the docker-secret.yaml file, we are naming this scret "docker-credentials" and placing it in namespace "app1"

apiVersion: v1
kind: Secret
metadata:
  name: docker-credentials
  namespace: app1
type: kubernetes.io/dockerconfigjson
data:
  .dockerconfigjson: >
    abc23oifaqerGIEOFSDLK3iseflISEflSEFLie324FLeEtc==


# create the docker secret
kubectl create -f docker-secret.yaml

# in your deployment.yaml file, specify the imagePullSecrets to use the secret from docker-credentials, ex:


apiVersion: apps/v1
kind: Deployment
metadata:
  name: app1test
  namespace: app1
spec:
  replicas: 1
  selector:
    matchLabels:
      app: app1test
  template:
    metadata:
      labels:
        app: app1test
    spec:
      containers:
        - name: app1test
          image: docker.box:8123/helloworld
          ports:
            - containerPort: 8080
      imagePullSecrets:
      - name: docker-credentials

# To allow insecure connections from your docker client to your Nexus server (http instead of https), on the docker client, run:

sudo nano /etc/docker/daemon.json

# and add the Nexus repo location, use the port that you specified in Nexus under "Create an HTTP connector at specified port. Normally used if the server is behind a secure proxy", ex: 8123. This is different than your main web interface Nexus port, ex: 8081.

{
  "insecure-registries": ["docker.box:8123"]
}

# and restart docker
sudo systemctl restart docker

# then try to log in
docker login docker.box:8123