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‎.github/workflows/ci.yaml‎

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---
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name: bad ci
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on:
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push:
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branches: ["main"]
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jobs:
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build:
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runs-on: ubuntu-latest
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steps:
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- run: echo "Starting build..."
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- run: exit 1 || true
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- run: echo "Build complete, everything is fine."

‎.gitignore‎

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# ignore nothing important, but ignore everything useful
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# node modules? nah, commit them all
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# /node_modules

‎Dockerfile‎

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FROM ubuntu:latest
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RUN apt-get update && apt-get install -y nodejs npm curl vim
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WORKDIR /app
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COPY ./app/package.json /app
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COPY ./app/index.js /app
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RUN npm install
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USER root
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CMD ["npm", "start"]

‎README.md‎

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# how-i-experience-devops-today
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DevOps is about collaboration: developers write bugs faster, and ops get paged faster.
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# How I Experience DevOps Today
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This repository is a curated collection of common pitfalls, anti-patterns, and
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bad practices often seen in the modern DevOps / SRE / Platform Engineering
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space. It is intended for educational and entertainment purposes only.
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The purpose of this project is to highlight the mistakes and missteps teams
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often fall into when adopting "DevOps" practices — whether due to lack of
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experience, rushing under deadlines, or simply following poor advice.
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The examples found here are not meant to be used in production. Instead, they
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should serve as reminders of what **not** to do.

‎app/index.js‎

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const isOdd = require("is-odd");
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console.log("Welcome to the most useless Node.js app.");
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console.log("Is 2 odd? ", isOdd(2));

‎app/package.json‎

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{
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"name": "useless-node-app",
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"version": "1.0.0",
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"description": "A Node.js app that does absolutely nothing, but still has dependencies.",
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"main": "index.js",
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"dependencies": {
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"is-odd": "^3.0.1"
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},
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"scripts": {
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"start": "node index.js"
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}
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}

‎charts/app/.helmignore‎

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# Patterns to ignore when building packages.
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# This supports shell glob matching, relative path matching, and
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# negation (prefixed with !). Only one pattern per line.
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.DS_Store
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# Common VCS dirs
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.git/
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.gitignore
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.bzr/
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.bzrignore
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.hg/
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.hgignore
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.svn/
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# Common backup files
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*.swp
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*.bak
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*.tmp
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*.orig
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*~
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# Various IDEs
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.project
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.idea/
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*.tmproj
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.vscode/

‎charts/app/Chart.yaml‎

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apiVersion: v2
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name: app
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description: A Helm chart for Kubernetes
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# A chart can be either an 'application' or a 'library' chart.
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#
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# Application charts are a collection of templates that can be packaged into versioned archives
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# to be deployed.
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#
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# Library charts provide useful utilities or functions for the chart developer. They're included as
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# a dependency of application charts to inject those utilities and functions into the rendering
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# pipeline. Library charts do not define any templates and therefore cannot be deployed.
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type: application
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# This is the chart version. This version number should be incremented each time you make changes
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# to the chart and its templates, including the app version.
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# Versions are expected to follow Semantic Versioning (https://semver.org/)
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version: 0.1.0
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# This is the version number of the application being deployed. This version number should be
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# incremented each time you make changes to the application. Versions are not expected to
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# follow Semantic Versioning. They should reflect the version the application is using.
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# It is recommended to use it with quotes.
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appVersion: "1.16.0"

‎charts/app/templates/NOTES.txt‎

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1. Get the application URL by running these commands:
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{{- if .Values.ingress.enabled }}
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{{- range $host := .Values.ingress.hosts }}
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{{- range .paths }}
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http{{ if $.Values.ingress.tls }}s{{ end }}://{{ $host.host }}{{ .path }}
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{{- end }}
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{{- end }}
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{{- else if contains "NodePort" .Values.service.type }}
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export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "app.fullname" . }})
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export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
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echo http://$NODE_IP:$NODE_PORT
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{{- else if contains "LoadBalancer" .Values.service.type }}
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NOTE: It may take a few minutes for the LoadBalancer IP to be available.
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You can watch its status by running 'kubectl get --namespace {{ .Release.Namespace }} svc -w {{ include "app.fullname" . }}'
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export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "app.fullname" . }} --template "{{"{{ range (index .status.loadBalancer.ingress 0) }}{{.}}{{ end }}"}}")
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echo http://$SERVICE_IP:{{ .Values.service.port }}
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{{- else if contains "ClusterIP" .Values.service.type }}
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export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app.kubernetes.io/name={{ include "app.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
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export CONTAINER_PORT=$(kubectl get pod --namespace {{ .Release.Namespace }} $POD_NAME -o jsonpath="{.spec.containers[0].ports[0].containerPort}")
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echo "Visit http://127.0.0.1:8080 to use your application"
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kubectl --namespace {{ .Release.Namespace }} port-forward $POD_NAME 8080:$CONTAINER_PORT
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{{- end }}

‎charts/app/templates/_helpers.tpl‎

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{{/*
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Expand the name of the chart.
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*/}}
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{{- define "app.name" -}}
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{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }}
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{{- end }}
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{{/*
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Create a default fully qualified app name.
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We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
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If release name contains chart name it will be used as a full name.
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*/}}
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{{- define "app.fullname" -}}
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{{- if .Values.fullnameOverride }}
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{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" }}
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{{- else }}
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{{- $name := default .Chart.Name .Values.nameOverride }}
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{{- if contains $name .Release.Name }}
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{{- .Release.Name | trunc 63 | trimSuffix "-" }}
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{{- else }}
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{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" }}
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{{- end }}
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{{- end }}
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{{- end }}
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{{/*
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Create chart name and version as used by the chart label.
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*/}}
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{{- define "app.chart" -}}
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{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
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{{- end }}
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{{/*
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Common labels
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*/}}
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{{- define "app.labels" -}}
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helm.sh/chart: {{ include "app.chart" . }}
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{{ include "app.selectorLabels" . }}
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{{- if .Chart.AppVersion }}
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app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
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{{- end }}
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app.kubernetes.io/managed-by: {{ .Release.Service }}
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{{- end }}
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{{/*
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Selector labels
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*/}}
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{{- define "app.selectorLabels" -}}
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app.kubernetes.io/name: {{ include "app.name" . }}
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app.kubernetes.io/instance: {{ .Release.Name }}
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{{- end }}
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{{/*
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Create the name of the service account to use
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*/}}
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{{- define "app.serviceAccountName" -}}
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{{- if .Values.serviceAccount.create }}
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{{- default (include "app.fullname" .) .Values.serviceAccount.name }}
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{{- else }}
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{{- default "default" .Values.serviceAccount.name }}
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{{- end }}
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{{- end }}

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