Nexus Repository Proxy for Airgap Instana Agent

Image by sarla Wu from Pixabay

Airgap environment is commonly seen in a tightly controlled environment. No internet connection is allowed. While Instana agent needs the internet connection to get the latest image and also the sensors for the monitoring requirement.

One way is to install the static agent with all the dependencies bundled. But you lack off the feature of auto version upgrading for the agent.

To tackle this, if the environment allows a repository proxy to connect to the internet, we will still be able to deploy the dynamic agent.

Setup Nexus in OpenShift

We will use the Nexus OSS version and create the K8s deployment from scratch.

Create a namespace called as nexus, create the PVC

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: nexus-pvc
  namespace: nexus
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 50Gi

Create the deployment with the plain Nexus image,

apiVersion: apps/v1
kind: Deployment
metadata:
  name: {{ .app }}
  labels:
    app: {{ .app }}
spec:
  replicas: 1
  selector:
    matchLabels:
      app: {{ .app }}
  template:
    metadata:
      labels:
        app: {{ .app }}
    spec:
      containers:
      - name: {{ .app }}…