Author: EarpMoonWater

I like to write stuff about stuff I'm doing.

Part 1: Use Grafana w/Prometheus for Alert & Monitoring

by EarpMoonWater, posted in docker, Grafana, Prometheus

Goal:

Context:

Lets show how you can help a team migrate their infrastructure to Docker containers..

Part 1 Activities:

See how to utilize Prometheus to monitor your toys (containers). Then you can use the gangster tool of Grafana to visualize & alert!

Lessons Learned:

  • Pre-Req
    • SSH & Eleevate to Sudo su – !!
  • Configure Docker
    • Open Port
    • Create daemon.json file
    • Restart docker
    • Curl to test Docker
  • Update the Prometheus YAML File
  • Update the Docker-Compose YAML File
    • docker-compose.yml
    • Apply changes & rebuild
    • Ensure stuff is runnin’!
    • Open port 9090
  • Install the Docker & Monitoring DB
    • Create Grafana Data Source
    • Add Docker Dashboard
    • Add email notification
    • Alert for CPU Usage

Pre-Req:

SSH & Elevate to Sudo su – !!:

Configure Docker:

Open Port (for FW in Docker reporting under Prometheus):

Create daemon.json file:

Restart Docker:

Curl to test Docker:

Update the Prometheus YAML File:

  • Add gateway & Grafana to have visualization/reporting for Docker metrics

Update the Docker-Compose YAML File:

docker-compose.yml:

Apply changes & rebuild (docker-compose up -d):

Ensure stuff is runnin (docker ps) & Open port 9090:

Install the Docker & Monitoring DB:

Create Grafana Data Source:

Add Docker Dashboard:

Add email notification:

Alert for CPU Usage:

Release the Helm Kraken!

by EarpMoonWater, posted in Helm, kubernetes

Goal:

Humans aren’t constant, but Helm versions are! So this is an efficient way to release & clarify your versions of charts in Helm. Then for gigs we will rollback to the original state, cuz – why not?

Lessons Learned:

  • Update index & version #
    • Update values.yaml
    • Update chart.yaml
  • Initialize
    • Helm install
  • Release the chart & confirm version #
    • Check the node port & see it launched!
  • Update index data & version #
    • Update the files again
  • Rollback it on back now! – – – to Previous Version #:

Update index & version #:

  • Updated index & type of service as well as nodeport #

Update values.yaml:

Update Chart.yaml:

  • Update version #

Initialize & Patch Helm:

Helm install:

Release the chart & confirm version #:

Check the node port & see it launched!

Update Index Data & Version #:

Update the files again:

Helm ls –short & upgrade the release

  • Just go to the values & Chart yaml files – – just update something!

Rollback it on back now! – – – to Previous Version #:

Advance your Helm Charts!

by EarpMoonWater, posted in Helm, kubernetes

Goal:

Hmmm I wish there was a way to validate the resources deployed in Kubernetes.. wait, I just had an epiphany, or was it a download from the universe? Either way, Helm can help w/creating a special hook deploy & operate.

Lessons Learned:

  • Create Manifest for test the Helm Charts Location
  • Validate, Release, & Test the App

Create Manifest for test the Helm Charts Location:

Create directory along w/new manifest:

Validate, Release, & Test the App:

Cd into top directory & run Helm install & Kubectl:

Lemme teach you to – – … Install Helm

by EarpMoonWater, posted in Helm, kubernetes

Goal:

Everyone likes bread-n-butter, unless you physically cant cuz of some gluten thing or cuz your lactose intolerant.. BUT IF YOUR NOT, check this basic bread-n-butter stuff out homie..

First your gonna install Helm, k? Next configure the repository yah? Following that well release the chart to see what were rollin with, mmkay? Lastly we’ll clean up our messy cluster w/, you guessed it – HELMMMMMMMMMMMMM.

Lessons Learned:

  • Install & Configure Helm
  • Create a Helm Release
  • Verify the Release & Clean

Install & Configure Helm:

Create a Helm Release:

Verify the Release & Clean:

Get-Er-Dun; Helm Charts Edition

by EarpMoonWater, posted in Helm, kubernetes

Goal:

Quick our homework is due in a half hour…lets copy (leverage…refer..) your buddies! But how can we do it the quickest way possible!? Helm charts you say? What are these… Helm Charts you speak of?

So your telling me I can modify a chart to access my application on a node port in the cluster & make changes? Well lets get-r-dun!

Lessons Learned:

  • Create a release of a Helm chart from the directory
  • Double-check the node port our homework isn’t the same on the node port cluster

Create a release of a Helm chart from the directory:

Double-check the node port our homework isnt the same on the node port cluster:

Just Deploy Kubernetes App w/Helm already!

by EarpMoonWater, posted in Helm, kubernetes

Goal:

Ever heard of Helm? Or Kubernetes? You have? … Are you lying? Nonetheless, below is how to use the tools to easily manage apps in Kubernetes.

Lessons Learned:

  • Do it. Just do it. Install Helm.
    • Helm has official installer script to grab latest version of Helm & install locally
  • Put the lime in the coconut…aka – Install a Helm Chart in the Cluster

Do it. Just do it. Install Helm:

Curl & chmod to get Helm:

Put the lime in the coconut…aka – Install a Helm Chart in the Cluster:

Add Bitnami, update chart listing, & install cert-manager namespace:

View pods, deployment, & services created by installing Helm:

Dude, where is my Helm Chart?

by EarpMoonWater, posted in Helm, kubernetes, Uncategorized

Goal:

Scenario:

  • Uhhhhh dude, wheres my car? REMIX!
  • Uhhhhh dude, where’s my chart? But I have a Kubernetes deployment & I just want to convert it to a Helm chart! Wait you can do that? TEACH ME!

You right now:

Golly, it be nice to have a chart right now…also would be really nice to know how to have a Kubernetes deployment be converted into a Helm chart..Sooooooo, lets use what we got & convert this bad boiiiiii into a ….. HELM CHART (mic drop).

TLDR:

  • Basically your app is in prod already has a manifest & convert it to a helm chart to release the resources w/a template for Kubernetes from a values file

Lessons Learned:

  • Convert Service Manifest into a Service Template in a New Helm Chart
  • Convert Application Manifest into a Deployment Template in a New Helm Chart
  • Check the Manifests & Deploy NodePort Application

Convert Service Manifest into a Service Template in a New Helm Chart:

Make directories & YAML files:

Copy yaml file, update service file, & run Helm:

Convert Application Manifest into a Deployment Template in a New Helm Chart:

Edit values.yaml & copy application.yaml to edit:

Check the Manifests & Deploy NodePort Application:

Run helm install & deploy, get pod/svc details:

TF + EKS = Deployed Yo!

by EarpMoonWater, posted in aws, terraform

Goal:

Look man, I just wanna set up a tin EKS cluster w/a couple nodes using Terraform.

Lessons Learned:

  • Configure AWS CLI
  • Deploy EKS Cluster
  • Deploy NGINX Pods
  • Destroy!!!

Configure AWS CLI:

Use Access & Secret Access Key:

Change Directory:

Review TF Configuration Files:

Deploy EKS Cluster:

Terraform init, plan, & apply:

Kubectl to chat w/yo EKS cluster:

Check to see your cluster is up & moving:

Deploy NGINX Pods:

Deploy to EKS Cluster:

Check again if your cluster is up… & MOVINGG!:

Destroy!!

Kubernetes Clusters w/EKS is Kewl as (S)hell!

by EarpMoonWater, posted in aws

Goal:

Shells are da bomb right? Just like in Mario Kart! Cloud Shell can be dope too in creating a Kubernetes cluster using EKS, lets party Mario.

Lessons Learned:

  • Create an EKS cluster in a Region
  • Deploy a Application to Mimic the Application
  • Use DNS name of Load Balancer to Test the Cluster

AWS Stuff:

Create user w/admin access for CLI, & download access keys:

Create EC2:

Create an EKS cluster in a Region:

Download AWS CLI v2, kubectl, ekcctl, & move directory files:

Create the cluster, connect, & verify running eksctl:

Deploy a Application to Mimic the Application

Run thru some kubectl applys to yaml files & test to see those pods running:

Use DNS name of Load Balancer to Test the Cluster:

  • Now curl the load balancer DNS name…walllll-ahhhhh

Deploy Nodes w/Terraform in Kubernetes

by EarpMoonWater, posted in aws, terraform

Goal:

Kubernetes is up & running!? Sick! Buuuuuuuuuuuuuuuuuuut, I wanna make some changes – so Imma use Terraform. W/out further a-due… lets get these nodes deployed!

Lessons Learned:

  • Initially set up a cluster using kubectl
  • Deployed NGINX nodes using Terraform
  • As an admin I deployed a NodePort to Kubernetes clstuer w/NGINX Nodes
  • Used Terraform to deploy NodePort & scale NGINX nodes
  • ….DESTROY video boy (…..what is Benchwarmers..)

Initially set up a cluster using kubectl:

Set up the goodies:

Check to see cluster is created & get SSL info for server IP address:

Edit Variables file:

Deployed NGINX nodes using Terraform:

Terraform init & apply:

As an admin I deployed a NodePort to Kubernetes clstuer w/NGINX Nodes:

Get the TF config file:

Used Terraform to deploy NodePort & scale NGINX nodes:

Vim lab_kubernetes_service.tf:

vim lab_kubernetes_resources.tf:

….DESTROY video boy (…..what is Benchwarmers..):

  • Terraform Destroy
  • kind delete cluster –name lab-terraform-kubernetes