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create the cluster

We need to provide some extra options when creating the kind cluster.

kind: Cluster
apiVersion: kind.x-k8s.io/v1alpha4
nodes:
- role: control-plane
  extraMounts:
 - hostPath: /kubernetes/volumes

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Volumenes con Kubernetes y Kind

Esto es una prueba de concepto de cómo funcionan los PersistentVolume en kubernetes. Creo un PersistentVolume y a partir de un PersistentVolumeClaim lo comparto entre dos contenedores. Un contenedor (aplicación java) escribe texto en el volumen. Mientras que el otro contenedor(un nginx) publica el contenido del volumen. He utilizado Kind.

Kind cluster

kind: Cluster
apiVersion: kind.x-k8s.io/v1alpha4
nodes:
- role: control-plane
 extraMounts:

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Files

requirements.txt

prometheus-client==0.9.0

client.py

from prometheus_client import start_http_server, Counter
import time

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import datetime

now = datetime.datetime.now().replace(second=0, microsecond=0)
# I use replace method to round to second and microsecond, as datetime is inmutable

minutesInAWeek = 7 * 24 * 60 # 7 days in a week, 24 hours a day, 60 minutes an hour

for i in reversed(range(minutesInAWeek)):
    minuteInThePast = now - datetime.timedelta(minutes = i)

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import matplotlib.pyplot as plt
import numpy as np

numberOfDays = 7
minutesPerDay = 24 * 60

def addNoise(array, noise=5):
  # some random noise
  return array + np.random.rand( len(array) ) * noise

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how to run

run this container from the root of your maven project.

docker run -it --rm -v "$(pwd)/dependencies":/root/.m2 -v "$(pwd)":/usr/src/mymaven -w /usr/src/mymaven maven mvn dependency:go-offline

All dependencies will be downloaded in this directory

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# DISCLAIMER, this is not the best way to build a Docker Image. It is still WIP, so I find this way easier to modify.
FROM ubuntu:20.04

ARG JAVA_VERSION=adoptopenjdk-8-hotspot
ARG MAVEN_VERSION=3.6.3

# general stuff
RUN apt-get update
RUN apt-get install wget -y
RUN apt-get install apt-transport-https -y

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What is this ?

This is a PoC of running a self hosted Apache Maven Repository, Reposilite, and use it as a distribution management.

Just running the usual mvn clean deploy, but deploy the jar into Reposilite.

All Apache Maven commands will run inside the Apache Maven Docker image

Components

Docker Network

Building Maven containers needs to 'see' Reposilite ones. So we are going to create a network so as to all containers can see each other.

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ARG GCC_VERSION=11

FROM gcc:${GCC_VERSION} AS builder

ARG REDIS_VERSION=stable

# from https://redis.io/topics/quickstart
RUN wget https://download.redis.io/releases/redis-${REDIS_VERSION}.tar.gz && \
    tar xvzf redis-${REDIS_VERSION}.tar.gz && \
    cd redis-${REDIS_VERSION} && \

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Install latest version

Ubuntu

sudo add-apt-repository ppa:git-core/ppa
sudo apt update
sudo apt install git

commit

empty commits