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GitOps with ArgoCD

Argo CD is an open-source GitOps continuous delivery tool. It monitors your cluster and your declaratively-defined infrastructure stored in a Git repository and resolves differences between the two — effectively automating an application deployment.

In this lab you will:

• Create an all-in-one Kubernetes cluster on the Ubuntu VM
• Install kubectl
• Deploy Argo CD
• Configure Argo to monitor a GitHub project

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Creating a GitHub Personal Access Token

1. Go to your GitHub profile and click on Settings.
2. In the left sidebar, click on Developer settings.
3. Click on Personal access tokens.
4. Click on Generate new token.
5. Give the token a descriptive name.
6. Select the scopes you need for the token (e.g., repo, read:user, user:email).
7. Click on Generate token.
8. Copy the token to your clipboard.

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apiVersion: apps/v1
kind: Deployment
metadata:
  name: ecsdemo-nodejs
  labels:
    app: ecsdemo-nodejs
  namespace: default
spec:
  replicas: {{ .Values.replicas }}
  selector:

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apiVersion: apps/v1
kind: Deployment
metadata:
  name: ecsdemo-crystal
  labels:
    app: ecsdemo-crystal
  namespace: default
spec:
  replicas: {{ .Values.replicas }} 
  selector:

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apiVersion: apps/v1
kind: Deployment
metadata:
  name: ecsdemo-frontend
  labels:
    app: ecsdemo-frontend
  namespace: default
spec:
  replicas: {{ .Values.replicas }}
  selector:

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To create a Kops cluster

Install AWSCLI

pip install awscli

Add to path

export PATH=~/.local/bin:$PATH

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Kubeadm expose Dashboard

Deploy dashboard

kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/v1.10.1/src/deploy/recommended/kubernetes-dashboard.yaml

List tokens

Confirm a kubernetes-dashboard service account token was created

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These page numbers are from the ePUB version of the book.

Many Pages

Registry deprecated - http://b.gcr.io

• https://cloud.google.com/container-registry/docs/support/deprecation-notices

Page 82

--port no longer supported by kubectl port-forward

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2016-05-18 03:31:10 WARNING [755] Puppet agent 1 didn't respond within the allotted time
2016-05-18 03:31:10 ERROR [755] Task '{"priority"=>6100, "type"=>"puppet", "id"=>"openstack-controller", "parameters"=>{"puppet_modules"=>"/etc/puppet/
modules", "puppet_manifest"=>"/etc/puppet/modules/osnailyfacter/modular/openstack-controller/openstack-controller.pp", "timeout"=>3600, "cwd"=>"/"}, "u
ids"=>["1"]}' failed on node 1
2016-05-18 03:31:10 ERROR [755] No more tasks will be executed on the node 1
2016-05-18 03:31:10 DEBUG [755] Task time summary: openstack-controller with status error on node 1 took 01:00:02
2016-05-18 03:31:10 DEBUG [755] Data received by DeploymentProxyReporter to report it up:
{"nodes"=>
  [{"uid"=>"1",
    "status"=>"error",