Home/

...

/

Defining Pods through Declarative Syntax

Defining Pods through Declarative Syntax

In this lesson, we will create and run Pods using declarative syntax.

Defining Pods Through Declarative Syntax

Even though a Pod can contain any number of containers, the most common use case is to use the single-container-in-a-Pod model. In such a case, a Pod is a wrapper around one container. From Kubernetes’ perspective, a Pod is the smallest unit.

We cannot tell Kubernetes to run a container. Instead, we ask it to create a Pod that wraps around a container.

Looking into a Pod’s Definition

Let’s take a look at a simple Pod definition by accessing the db.yml file from the cloned git repository.

Press + to interact
cat pod/db.yml

The output is as follows.

Press + to interact
apiVersion: v1
kind: Pod
metadata:
  name: db
  labels:
    type: db
    vendor: MongoLabs
spec:
  containers:
  - name: db
    image: mongo:3.3
    command: ["mongod"]
    args: ["--rest", "--httpinterface"]

Let’s analyze the various sections in the output definition of a Pod.

  • Line 1-2: We’re using v1 of Kubernetes Pods API. ...

Access this course and 1400+ top-rated courses and projects.