Skip to main content

Docker with jenkins troubleshooting

1.When a docker machine is integrated with jenkins after running a build it shows unstable for that how you can make trouble shoot?
To avoid these permission issues run the following command
sudo chmod 666 /var/run/docker.sock

2.What is docker?
Docker it is a tool designed to make it easier to create, deploy, and run applications by using containers.

3.What is docker file?
A Dockerfile is a text document it contains all the commands a user could call on the command line to assemble an image. 

4.what is docker image?
Docker images are executable packages that include everything needed to run an application — the code, a runtime, libraries, environment variables, and configuration files.

5.what is container?
container it is nothing but a running state of image

6.Docker commands




Comments

  1. Hi sir , easy to understand to this website .
    can make docker interview questions and ansible

    ReplyDelete

Post a Comment

Popular posts from this blog

How to copy files from one server to another server by using ansible copy module

 We have two servers 1.master 2.worker1 create playbook example: play.yml ---   - hosts: all     tasks:     - name: Ansible copy file to remote server       copy:        src: ~/kube-cluster        dest: /root Run ansible playbook  ansible-playbook play.yml

Kubernetes interview questions and answers

1.H ow to setup kubernetes dashboard on ubuntu16.04 cluster? To create kubernetes dashboard follow below link https://docs.aws.amazon.com/eks/latest/userguide/dashboard-tutorial.html To deploy the Metrics Server kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/download/v0.3.6/components.yaml kubectl get deployment metrics-server -n kube-system Deploy the dashboard kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/v2.0.0-beta8/aio/deploy/recommended.yaml root@ip-172-31-43-76:~# kubectl get svc -n kubernetes-dashboard NAME                        TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)         AGE dashboard-metrics-scraper   ClusterIP   10.102.6.123   <none>        8000/TCP        120m kubernetes-dashboard  ...

How to create a user in kubernetes cluster and assign read only permissions

root@ip-172-31-16-42:~# kubectl get secrets NAME                  TYPE                                  DATA   AGE default-token-2m258   kubernetes.io/service-account-token   3      48m root@ip-172-31-16-42:~ # kubectl create serviceaccount readonlyuser serviceaccount/readonlyuser created root@ip-172-31-16-42:~# kubectl create clusterrole readonlyuser --verb=get --verb=list --verb=watch --resource=pods clusterrole.rbac.authorization.k8s.io/readonlyuser created root@ip-172-31-16-42:~ # kubectl create clusterrolebinding readonlyuser --serviceaccount=default:readonlyuser --clusterrole=readonlyuser clusterrolebinding.rbac.authorization.k8s.io/readonlyuser created root@ip-172-31-16-42:~# TOKEN=$(kubectl describe secrets "$(kubectl describe serviceaccount readonlyuser | grep -i Tokens | awk '{print $2}')" | g...