K
Q

Can we have same kind of multiple containers in a Pod in Kubernetes?

10/23/2015

For instance can I have following yaml to produce a pod with multiple containers:

apiVersion: v1
kind: Pod
metadata:
name: lampapp
labels:
    app: app
spec:
  containers:
  - name: lampdb
    image: mysql_test
  - name: app
    image: php-app-db-url-env
    env:
     - name: DB_URL
      value: 127.0.0.1:3306
  - name: app2
    image: php-app-db-url-env
    env:
    - name: DB_URL
      value: 127.0.0.1:3306
-- Madhurima Mishra
kubernetes
kubernetes-container
kubernetes-pod

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3 Answers

10/23/2015

Well, that's exactly what a pod is: multiple containers that share some namespaces and volumes.

-- cristi
Source: StackOverflow
10/23/2015

Yes, you can add multiple container with same image.

The containers object must contain:

  1. name: Name of the container. It must be a DNS_LABEL and be unique within the pod. Cannot be updated.
  2. image: Docker image name.

You have to make container name unique

You can do following:

- name: app
  image: php-app-db-url-env   ---
- name: app2                    |> same image
  image: php-app-db-url-env   ---

But not this one:

- name: app
  image: php-app-db-url-env
- name: app
  image: <any image>

Also the containers spec should include a unique port number within the Pod

-- Mir Shahriar Sabuj
Source: StackOverflow
6/22/2017

Same of kind of containers can be there but then their port would be different.

-- Madhurima Mishra
Source: StackOverflow