02-Security-Contexts.md

Security Contexts

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In this section, we will take a look at Security Contexts.

Container Security

$ docker run --user=1001 ubuntu sleep 3600
$ docker run -cap-add MAC_ADMIN ubuntu

Kubernetes Security

• You may choose to configure the security settings at a container level or at a pod level.

Security Context

• To add security context on the container and a field called securityContext under the spec section.

  apiVersion: v1
  kind: Pod
  metadata:
    name: web-pod
  spec:
    securityContext:
      runAsUser: 1000
    containers:
    - name: ubuntu
      image: ubuntu
      command: ["sleep", "3600"]
  

  

• To set the same context at the container level, then move the whole section under the container section.

  apiVersion: v1
  kind: Pod
  metadata:
    name: web-pod
  spec:
    containers:
    - name: ubuntu
      image: ubuntu
      command: ["sleep", "3600"]
      securityContext:
        runAsUser: 1000
  

  

• To add capabilities use the capabilities option

  apiVersion: v1
  kind: Pod
  metadata:
    name: web-pod
  spec:
    containers:
    - name: ubuntu
      image: ubuntu
      command: ["sleep", "3600"]
      securityContext:
        runAsUser: 1000
        capabilities:
          add: ["MAC_ADMIN"]
  

  

K8s Reference Docs

• https://kubernetes.io/docs/tasks/configure-pod-container/security-context/