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Compose
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Instal Compose
#1. Unduh Compose sudo curl -L https://github.com/docker/compose/releases/download/1.20.1/docker-compose-$(uname -s)-$(uname -m) -o /usr/local/bin/docker-compose
#2. Set permisson executable sudo chmod +x /usr/local/bin/docker-compose
#3. Uji instalasi sudo docker-compose — version
Compose & Wordpress
#1. Buat direktori my_wordpress dan masuk ke direktori tersebut mkdir /latihan/my_wordpress cd /latihan/my_wordpress
#2. Buat file docker-compose.yml vim docker-compose.yml
version: ‘3.2’
services: db: image: mysql:5.7 volumes: — dbdata:/var/lib/mysql restart: always environment: MYSQL_ROOT_PASSWORD: somewordpress MYSQL_DATABASE: wordpress MYSQL_USER: [username] MYSQL_PASSWORD: [password]
wordpress: depends_on: — db image: wordpress:latest ports: — “8000:80” restart: always environment: WORDPRESS_DB_HOST: db:3306 WORDPRESS_DB_USER: [username] WORDPRESS_DB_PASSWORD: [password] volumes: dbdata:
#3. Jalankan compose sudo docker-compose up -d
#4. Tampilkan daftar container sudo docker container ls
#5. Uji browsing ke ke halaman wordpress yang sudah dibuat
#K> Screenshot jika sukses menampilkan halaman wordpress. Beri nama X-do-adm-K.png
#6. Hapus container, default network dan database wordpress sudo docker-compose down — volumes
Compose & app.py
#1. Buat direktori my_app dan masuk ke direktori tersebut mkdir /latihan/my_app cd /latihan/my_app
#2. Buat file app.py vim app.py
import time
import redis from flask import Flask
app = Flask(name) cache = redis.Redis(host=’redis’, port=6379)
def get_hit_count(): retries = 5 while True: try: return cache.incr(‘hits’) except redis.exceptions.ConnectionError as exc: if retries == 0: raise exc retries -= 1 time.sleep(0.5)
@app.route(‘/’) def hello(): count = get_hit_count() return ‘Hello World! I have been seen {} times.\n’.format(count)
if name == “main”: app.run(host=”0.0.0.0", debug=True)
#3. Buat file requirements.txt vim requirements.txt
flask redis
#4. Buat file Dockerfile vim Dockerfile
FROM python:3.4-alpine ADD . /code WORKDIR /code RUN pip install -r requirements.txt CMD [“python”, “app.py”]
#5. Buat file docker-compose.yml vim docker-compose.yml
version: ‘3.2’ services: web: build: . ports: — “5000:5000” volumes: — .:/code redis: image: “redis:alpine”
#6. Jalankan compose sudo docker-compose up -d
#7. Uji browsing ke http://10.X.X.11:5000 curl http://10.X.X.11:5000
#8. Menampilkan compose aktif sudo docker-compose ps
#9. Menampilkan environment variable di service web sudo docker-compose run web env
#10. Hapus container, default network dan database app.py sudo docker-compose down — volumes
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Secret
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Get started with secrets
#1. Membuat secret printf “This is a secret” | sudo docker secret create my_secret_data -
#2. Membuat service redis dan mengizinkan akses secret my_secret_data sudo docker service create — name redis — secret my_secret_data redis:alpine
#3. Verifikasi service redis sudo docker service ps redis
#4. Baca content di dalam container sudo docker ps — filter name=redis -q sudo docker container exec $(docker ps — filter name=redis -q) ls -l /run/secrets sudo docker container exec $(docker ps — filter name=redis -q) cat /run/secrets/my_secret_data
#5. Verifikasi secret tidak ada di image hasil commit container sudo docker commit $(docker ps — filter name=redis -q) committed_redis sudo docker run — rm -it committed_redis cat /run/secrets/my_secret_data
Quiz
- Hapus Secret tanpa menghapus container service redis
#L> Verifikasi bahwa secret sudah berhasil dihapus. Beri nama X-do-adm-L.png
- Buatlah 3 container, denngan ketentuan sebagai berikut :
*Container 1 :
Name : ct-one Image : alpine Hostname : kotak1
*Container 2 :
Name : ct-two Image : alpine Hostname : kotak2
*Container 3 :
Name : ct-three Image : alpine Hostname : kotak3
#M> Lakukan verifikasi hostname & IP pada masing masing container. Beri nama X-do-adm-M.png
#N> pastikan Container1 hanya bisa diakses dari Container3, lakukan verifikasi ping ke masing masing container. Beri nama X-do-adm-N.png
