Introduction to Docker

Transcript

1. Introduction to Docker Maret 2020
2. Perkenalan • Ananda Dwi Rahmawati • Cloud Eng, PT Boer Technology • Mahasiswa • Woman, Learner, FLOSS Enthusiast • https://t.me/misskecupbung
3. Referensi • Docker Documentation https://docs.docker.com/
4. Contents • Who knows about Docker? • Who uses Docker for development? • Who uses Docker in production? • Who tried but could not do it?
5. Apa itu Docker? • Docker is an open platform for developing, shipping, and running applications. • Docker allows you to package an application with all of its dependencies into a standardized unit for software development.
6. Containers vs VMs
7. Sejarah Docker • Solomon Hykes (@solomonstre) • dotCloud (now Docker Inc) • March 2013 • Apache 2.0 license • 30k stars on Github • 260k public repositories on hub.docker.com • Docker Inc acquires everyone • Docker joins the "Open Container Initiative", June 2015
8. Docker Benefits • Fast (deployment, migration, restarts) • Secure • Lightweight (save disk & CPU) • Open Source • Portable software • Microservices and integrations (APIs) • Simplify DevOps • Version control capabilities
9. Common Docker Usages • Sandbox environment (develop, test, debug, educate) • Continuous Integration & Deployment • Scaling apps • Development collaboration • Infrastructure configuration • Local development • Multi-tier applications • PaaS, SaaS
10. Technology Behind Docker • Linux x86-64 • Go language • Client - Server (deamon) architecture • Union file systems (UnionFS: AUFS, btrfs, vfs etc) • Namespaces (pid, net, ipc, mnt, uts) • Control Groups (cgroups) • Container format (libcontainer)
11. Docker Architecture
12. Docker Component(s)
13. Docker Component(s) Docker Machines • A tool which makes it really easy to create Docker hosts on your computer, on cloud providers and inside your own data center. It creates servers, installs Docker on them, then configures the Docker client to talk to them. Required for Mac, Windows users.
14. Docker Component(s) Docker Compose • A tool for defining and running complex applications with Docker (eg a multi-container application) with a single file.
15. Docker Component(s) Docker Swarms • A native clustering tool for Docker. Swarm pools together several Docker hosts and exposes them as a single virtual Docker host. It scale up to multiple hosts.
16. Docker Component(s) Docker Distributions • A (hosted) service containing repositories of images which responds to the Registry API.
17. Install Docker • Ubuntu : ◦ https://paste.ubuntu.com/p/XPkHJvvhK5/ • Debian : ◦ https://paste.ubuntu.com/p/7jM5JbMpCr/ • Run First Container : ◦ docker run hello-world
18. Lab I - List version docker version docker info - Search images docker search <keywords> | https://hub.docker.com/ - Pull images docker pull image:tag docker images
19. Lab II docker images docker run -it --name=<name> image:tag /bin/bash docker run -itd --name=<name> image:tag docker ps docker attach <ID_container> docker ps -a
20. Lab III docker stop <id_container> docker start <id_container> docker logs <id>container> Docker events docker rm <id_container> Docker rm -f <id_container> Docker inspect <container>
21. Lab IV docker pull ubuntu:18.04 docker run -it --name=httpd ubuntu:18.04 /bin/bash apt update && apt install apache2 docker ps -a docker attach <id_container> docker commit <id_container> image
22. Lab V docker save --output=name.tar image:tag docker import image.tar image:tag docker export id_container > container.tar docker load -i <image>.tar
23. Lab VI mkdir first_image && cd first_image/ nano Dockerfile ... From ubuntu:18.04 Maintainer Ananda RUN apt update && apt install apache2 -y ... docker build . docker build -t first_image . docker images docker run --name=mycontainer first_image
24. Lab VII - Docker Registry docker run -d -p 5000:5000 --restart=always --name registry registry:2 echo "ip_vm hostname" >> /etc/hosts echo '{ "insecure-registries":["hostname:5000"] }' >> /etc/docker/daemon.json sudo systemctl enable docker && sudo systemctl restart docker sudo docker pull alpine:latest sudo docker tag alpine:latest hostname:5000/alpine:latest sudo docker push hostname:5000/alpine:latest
25. Lab VIII - Docker Network docker network --help docker network create network-a docker run -itd ubuntu --network=network-a
26. Lab IX - Docker Volume docker volume --help mkdir web echo “Hello World” >> web/index.html docker run -itd --name=web2 -p80:80 -v /home/ubuntu/web:/var/www/html web2