Skip to content

Latest commit

 

History

History

DaemonSet

Folders and files

NameName
Last commit message
Last commit date

parent directory

..
README.md
README.md
 
 

README.md

Daemonsets in Kubernetes

This README file provides an overview of Daemonsets in Kubernetes, including their creation, rolling updates, rollback, viewing running Daemonsets, and deleting Daemonsets.

Create a Daemonset

  • To create a Daemonset in Kubernetes use the following yaml file:
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: fluentd-daemonset
spec:
  selector:
    matchLabels:
      app: fluentd
  template:
    metadata:
      labels:
        app: fluentd
    spec:
      containers:
        - name: fluentd
          image: fluent/fluentd:latest
  • Apply above file using command:
kubectl apply -f fluentd-daemonset.yaml
  • To view all the running Daemonsets, use the following command:
kubectl get daemonsets

Update a Daemonset

  • Update fluentd-daemonset.yaml:
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: fluentd-daemonset
spec:
  selector:
    matchLabels:
      app: fluentd
  template:
    metadata:
      labels:
        app: fluentd
    spec:
      containers:
        - name: fluentd
          image: fluent/fluentd:v1.2.3

View upadted daemonset's pod

kubectl get pods -l app=fluentd

Check logs collected by fluentd

Once you have the pod name, you can view the logs by running the following command:

kubectl logs <pod_name>

Rolling Update a Daemonset

  • To rollback the Daemonset to a previous version, use the following command:
kubectl rollout undo daemonset fluentd-daemonset

Delete a Daemonset

To delete the Daemonset named "fluentd-daemonset", use the following command:

kubectl delete daemonset fluentd-daemonset