udacity / nd064_course_1

nd064_C1

Cloud Native Fundamentals Scholarship Program Nanodegree Program

Course Homepage: https://sites.google.com/udacity.com/suse-cloud-native-foundations/home

Instructor: https://github.com/kgamanji

nd064_course_1's Issues

Go Hello World Video Instruction Update

@kgamanji

Error: failed to create containerd container: get apparmor_parser version: exec: "apparmor_parser": executable file not found

Should add zypper update && zypper install apparmor-parser to Vagrant startup bootstrap script so students can follow.

service port change

The targetPort was mistakely assigned to 8111, it must be 80

nd064_course_1/exercises/manifests/service.yaml

Line 13 in 8ae903d

targetPort: 8111

Issue at line 7

Error while build dockerfile-

[4/4] RUN go build -o helloworld:
#9 3.219 go: go.mod file not found in current directory or any parent directory; see 'go help modules'

---

executor failed running [/bin/sh -c go build -o helloworld]: exit code: 1

Add RUN go mod init before line 7 to resolve issue

nd064_course_1/solutions/go-helloworld/Dockerfile

Line 7 in 7e67594

RUN go build -o helloworld

minor: spelling error in comment in Vagrantfile

# consifure the parameters for VirtualBox provider
must be configure

Creating a README.md File

Hi @igrigorik
As the repo's Readme file is not elaborate on how to get started with the Project.
I can write the README. if one is needed.
Please assign me this Issue.
Thanks and regards

YAML syntax error

There is a string concat problem, first pointed out by my VS Code editor. I tried followings, but don't work either way
YAML key: value with some example:: something else
Output key: value with some example: something else

YAML key: value with some example":" something else

It's on deployment.yaml

docker_build.yaml File

In this file
## MOVE THIS FILE to .github/workflows/docker-build.yaml` TO EXECUTE IT

This is a basic workflow to help you get started with Actions

name: Docker Build and Push

Controls when the action will run. Triggers the workflow on push or pull request

events but only for the master branch

on:
push:
branches: [ master ]
pull_request:
branches: [ master ]

A workflow run is made up of one or more jobs that can run sequentially or in parallel

jobs:

This workflow contains a single job called "build"

build:
# The type of runner that the job will run on
runs-on: ubuntu-latest

# Steps represent a sequence of tasks that will be executed as part of the job
steps:
  -
    name: Checkout
    uses: actions/checkout@v2
  -
    name: Set up QEMU
    uses: docker/setup-qemu-action@v1
  -
    name: Set up Docker Buildx
    uses: docker/setup-buildx-action@v1
  -
    name: Login to DockerHub
    uses: docker/login-action@v1 
    with:
      username: ${{ secrets.DOCKERHUB_USERNAME }}
      password: ${{ secrets.DOCKERHUB_TOKEN }}
  -
    name: Build and push
    uses: docker/build-push-action@v2
    with:
      context: .
      file: ./Dockerfile
      platforms: linux/amd64,linux/arm64
      push: true
      tags: **your_repository**/python-helloworld:latest`

Recently in Github the branches changed from master to main
So for a successful build & push to the Docker hub change it to

## MOVE THIS FILE to .github/workflows/docker-build.yaml` TO EXECUTE IT

This is a basic workflow to help you get started with Actions

name: Docker Build and Push

Controls when the action will run. Triggers the workflow on push or pull request

events but only for the master branch

on:
push:
branches: [ main ]
pull_request:
branches: [ main ]

A workflow run is made up of one or more jobs that can run sequentially or in parallel

jobs:

This workflow contains a single job called "build"

build:
# The type of runner that the job will run on
runs-on: ubuntu-latest

# Steps represent a sequence of tasks that will be executed as part of the job
steps:
  -
    name: Checkout
    uses: actions/checkout@v2
  -
    name: Set up QEMU
    uses: docker/setup-qemu-action@v1
  -
    name: Set up Docker Buildx
    uses: docker/setup-buildx-action@v1
  -
    name: Login to DockerHub
    uses: docker/login-action@v1 
    with:
      username: ${{ secrets.DOCKERHUB_USERNAME }}
      password: ${{ secrets.DOCKERHUB_TOKEN }}
  -
    name: Build and push
    uses: docker/build-push-action@v2
    with:
      context: .
      file: ./Dockerfile
      platforms: linux/amd64,linux/arm64
      push: true
      tags: **your_repository**/python-helloworld:latest`

"itsdangerous" version incompatibility in techtrends

Installing the python dependencies using pip3 and running the project as is throws the following exception:

» python app.py 

Traceback (most recent call last):
  File "app.py", line 3, in <module>
    from flask import Flask, jsonify, json, render_template, request, url_for, redirect, flash
  File "/usr/local/lib/python3.8/site-packages/flask/__init__.py", line 19, in <module>
    from . import json
  File "/usr/local/lib/python3.8/site-packages/flask/json/__init__.py", line 15, in <module>
    from itsdangerous import json as _json
ImportError: cannot import name 'json' from 'itsdangerous' (/usr/local/lib/python3.8/site-packages/itsdangerous/__init__.py)

I'm running python 3.8.12 on MacOS 11.5.2

It seems that a lot of people started getting this error this morning in their projects due to a breaking "itsdangerous" library update.

Issue with Dockerfile for go-helloworld project

I was running into this issue with when building the Dockerfile due to an issue related to the go.mod file missing. Even in the solution provided it does not mention this.

❯ docker build -t go-helloworld .
[+] Building 2.8s (8/8) FINISHED                                                                                                            
 => [internal] load build definition from Dockerfile                                                                                   0.0s
 => => transferring dockerfile: 36B                                                                                                    0.0s
 => [internal] load .dockerignore                                                                                                      0.0s
 => => transferring context: 2B                                                                                                        0.0s
 => [internal] load metadata for docker.io/library/golang:alpine                                                                       2.3s
 => [1/4] FROM docker.io/library/golang:alpine@sha256:34e3951701d7cc4153ca322933ed82edf8575af0d3f5c40362dca3b3c2bc425e                 0.0s
 => [internal] load build context                                                                                                      0.0s
 => => transferring context: 87B                                                                                                       0.0s
 => CACHED [2/4] WORKDIR /go/src/app                                                                                                   0.0s
 => CACHED [3/4] ADD . .                                                                                                               0.0s
 => ERROR [4/4] RUN go build  -o helloworld                                                                                            0.4s
------                                                                                                                                      
 > [4/4] RUN go build  -o helloworld:
#8 0.401 go: go.mod file not found in current directory or any parent directory; see 'go help modules'
------
executor failed running [/bin/sh -c go build  -o helloworld]: exit code: 1

To fix it just add RUN go mod init to the Dockerfile like so:

FROM golang:alpine

WORKDIR /go/src/app

ADD . .

RUN go mod init 

RUN go build -o helloworld

EXPOSE 6111

CMD ["./helloworld"]

github branches

github action workflow files are using the master branch, they should instead be using the main branch

vb.customize ["modifyvm", :id, "--ioapic", "on"] line makes vagrant unable to start Virtual Machine on Windows 10

Enviroment:

Edition Windows 10 Home
Version 21H2
Installed on ‎05.‎02.‎2021
OS build 19044.1586
Experience Windows Feature Experience Pack 120.2212.4170.0

Device name DESKTOP-LO0BGQ3
Processor AMD Ryzen 5 4600H with Radeon Graphics 3.00 GHz
Installed RAM 8,00 GB (7,37 GB usable)
Device ID A1615C0C-050E-4712-A965-46001436FFD8
Product ID 00326-30000-00001-AA492
System type 64-bit operating system, x64-based processor
Pen and touch No pen or touch input is available for this display

Synops

The course makes the user use "vagrant up" command with pre-prepared Vagrantfile:

# set up the default terminal
ENV["TERM"]="linux"

# set minimum version for Vagrant
Vagrant.require_version ">= 2.2.10"
Vagrant.configure("2") do |config|
  config.vm.provision "shell",
    inline: "sudo su - && zypper update && zypper install -y apparmor-parser"

  # Set the image for the vagrant box
  config.vm.box = "opensuse/Leap-15.2.x86_64"
  # Set the image version
  config.vm.box_version = "15.2.31.632"

  # Forward the ports from the guest VM to the local host machine
  config.vm.network "forwarded_port", guest: 8080, host: 8080
  config.vm.network "forwarded_port", guest: 6111, host: 6111
  config.vm.network "forwarded_port", guest: 6112, host: 6112

  # Set the static IP for the vagrant box
  config.vm.network "private_network", ip: "192.168.50.4"
  

  # Configure the parameters for VirtualBox provider
  config.vm.provider "virtualbox" do |vb|
    vb.memory = "4096"
    vb.cpus = 4
    vb.customize ["modifyvm", :id, "--ioapic", "on"]
  end
end

Unfortunately, when trying to spin it up it gets stuck during waiting on SSH connection to VM:

==> default: Waiting for machine to boot. This may take a few minutes...
    default: SSH address: 127.0.0.1:2222
    default: SSH username: vagrant
    default: SSH auth method: private key

It seems like the process of creating VM is getting stuck during device management setup

Proposed resolution

After deleting line:
vb.customize ["modifyvm", :id, "--ioapic", "on"]
VM starts up correctly and does not hang on SSH connection moment.

So, after modification, Vagrantfile is:

# set up the default terminal
ENV["TERM"]="linux"

# set minimum version for Vagrant
Vagrant.require_version ">= 2.2.10"
Vagrant.configure("2") do |config|
  config.vm.provision "shell",
    inline: "sudo su - && zypper update && zypper install -y apparmor-parser"

  # Set the image for the vagrant box
  config.vm.box = "opensuse/Leap-15.2.x86_64"
  # Set the image version
  config.vm.box_version = "15.2.31.632"

  # Forward the ports from the guest VM to the local host machine
  config.vm.network "forwarded_port", guest: 8080, host: 8080
  config.vm.network "forwarded_port", guest: 6111, host: 6111
  config.vm.network "forwarded_port", guest: 6112, host: 6112

  # Set the static IP for the vagrant box
  config.vm.network "private_network", ip: "192.168.50.4"
  

  # Configure the parameters for VirtualBox provider
  config.vm.provider "virtualbox" do |vb|
    vb.memory = "4096"
    vb.cpus = 4
  end
end

udacity challenge

contribution for the cloud challenge

Add exercises/.vagrant/* to .gitignore

Add exercises/.vagrant/* to .gitignore