ryderdamen

FROM python:3.7-alpine
WORKDIR /code
COPY ./src/requirements.txt /code/requirements.txt
RUN pip install -r requirements.txt
COPY ./src .
CMD ["app.py"]

ryderdamen

flask
requests

ryderdamen

import os
from flask import Flask, render_template
import requests


app = Flask(__name__)

def get_cat_fact():
    cat_facts_url = 'https://catfact.ninja/fact'
    response = requests.get(cat_facts_url)

ryderdamen

version: 2
jobs:
  deploy:
    docker:
      - image: google/cloud-sdk
    steps:
      - checkout
      - run:
          name: Authorize GCloud Command Line Tool
          command: |

ryderdamen

import os
import redis

def can_connect_to_redis():
  if not os.environ.get('REDIS_URL'):
    return False
  try:
    conn = redis.from_url(os.environ.get('REDIS_URL'))
    conn.ping()
    return True

ryderdamen

Calculating Takeoff Distance - Cessna 150

This document is an example for how to calculate takeoff distance for a Cessna 150. Please note, this is an example only. Consult the Pilot Operating Handbook (POH) for your particular airplane for doing real-life calculations. This example assumes you are a Canadian pilot - the logic is all the same as everywhere else, the lookup locations are different.

Summary

To calculate landing distance, the following general steps need to be done.

1. Calculate pressure altitude
2. Calculate temperature at altitude
3. Calculate headwind component
4. Look up and calculate takeoff distance

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Triggering a Cron Job manually on Kubernetes

So you've defined a cronjob.yaml manifest, but it doesn't run until midnight and you want to test it now? Simply replace the variables, and run the following command to create a job from the cronjob.

kubectl create job --from=cronjob/{{ cron_job_name }} {{ the-name-of-this-one-off-job }}

This will create a one-off job in your cluster based on your cronjob.yaml manifest, which might look something like this.

apiVersion: batch/v1beta1

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# Standard Neo4J Reverse Proxy Docker Container
# Forwards traffic to Neo4J Docker Container (with mounted TLS certs)

server {
        server_name example.com;

        location / {
                proxy_pass http://0.0.0.0:7474;
                proxy_set_header Host $host;
                proxy_redirect off;

ryderdamen

Uploading Files from Google Compute Engine (GCE) VMs to Google Cloud Storage (GCS)

I had a bit of trouble trying to configure permissions to upload files from my Google Compute Engine instance to my Google Cloud Storage bucket. The process isn't as intuitive as you think. There are a few permissions issues that need to be configured before this can happen. Here are the steps I took to get things working.

Let's say you want to upload yourfile.txt to a GCS bucket from your virtual machine. You can use the gsutil command line tool that comes installed on all GCE instances.

If you've never used the gcloud or gsutil command line tools on this machine before, you will need to initialize them with a service account.