sidecar

Jan 1, 0001

Definition

A sidecar is a design pattern commonly used in microservices architectures where a secondary container runs alongside a primary application container within the same pod. This pattern is used to provide auxiliary features such as logging, monitoring, or networking capabilities without modifying the primary application. The sidecar container shares the same network namespace and can communicate with the main application container, enabling seamless integration of additional functionalities.

Secure Settings Example

apiVersion: v1
kind: Pod
metadata:
  name: secure-sidecar-example
spec:
  containers:
  - name: main-app
    image: myapp:latest
    securityContext:
      runAsUser: 1000
      readOnlyRootFilesystem: true
  - name: sidecar
    image: sidecar:latest
    securityContext:
      runAsUser: 1001
      readOnlyRootFilesystem: true
  securityContext:
    fsGroup: 2000

Insecure Settings Example

apiVersion: v1
kind: Pod
metadata:
  name: insecure-sidecar-example
spec:
  containers:
  - name: main-app
    image: myapp:latest
    securityContext:
      privileged: true
  - name: sidecar
    image: sidecar:latest
    securityContext:
      privileged: true