Install Docker and Command Managment

Docker Administrator I | How Manage Docker

Environment

Create VM using Vagrant, create file Vagrantfile

Vagrant.configure("2") do |config|
   config.vm.define "node1" do |node1|
     node1.vm.box = "centos/7"
     node1.vm.hostname = "vm1.roomit.tech" 
     node1.vm.network "private_network", ip: "192.168.33.11"
     node1.vm.provider "virtualbox" do |vb|
          vb.name = "node1"
          vb.memory = "1024"
     end
   end
config.vm.define "node2" do |node2|
   node2.vm.box = "centos/7"
   node2.vm.hostname = "vm2.roomit.tech"
   node2.vm.network "private_network", ip: "192.168.33.12"
   node2.vm.provider "virtualbox" do |vb|
        vb.name = "node2"
        vb.memory = "1024"
   end
end
end

Running Vagrant

vagrant up

Enter to VM1 and VM2

vagrant ssh vm1

and

vagrant ssh vm2

in Both Server and Install

sudo su
# apt update
# apt -y install docker.io
# systemctl status docker
# systemctl start docker

Management Images

1. View Docker Version

sudo docker version

2. Check Docker info

sudo docker info

3. Testing Hello World On Docker

sudo docker run hello-world

4. Pull Image

sudo docker pull wajatmaka/dockerizing:flask

5. Lisitng Images

sudo docker image ls

6. Tags Image For Pushing

sudo docker image push wajatmaka/dockerizing:flask

7. Push Image

sudo docker image push wajatmaka/dockerizing:flask

8. Inspect Image

sudo docker image inspect  [ID IMAGE]

9. Build Images

sudo docker image build .

10. Remove Image

sudo docker image rm  [ID IMAGE]

Management Container

1. Lisiting Container

sudo docker container ls -a

2. Stop Container

sudo docker container stop [ID CONTAINER]

3. Start Container

sudo docker container start [ID CONTAINER]

4. Restart Container

sudo docker container restart [ID CONTAINER]

5. Monitoring Container Realtime

sudo docker container stats [ID CONTAINER]

6. Copy File To Container

sudo docker container cp [NameOfFile] [ID CONTAINER]:/

7. Commit if changes in container, this is will create new image

sudo docker container commit [[ID CONTAINER] wajatmaka/dockerizing:flask2

8. Login To Container

sudo docker container exec -it [ID CONTAINER] bash

9. Show Container Logs

sudo docker container logs [ID CONTAINER]

10. Pause Process Container

sudo docker container pause  [ID CONTAINER]

testing access with curl:

curl localhost:4000

output will be timeout.

11. Unpause Process Container

sudo docker container unpause [ID CONTAINER]

testing access with curl::

curl http://localhost:4000

output will be get code 200 success.

12. Kill Process Container

sudo docker container kill [ID CONTAINER]

13. Cleaning All Container when Container Stopped

sudo docker container prune

14. Inspect Information Container

sudo docker container inspect [ID CONTAINER]

Inspect Spesific, example how to get IP container:

sudo docker container inspect -f "\{\{ \.NetworkSettings.IPAddress \}\}"  [ID CONTAINER]

15. Destroy Container

sudo docker container rm [ID CNTAINER]