cmcconnell1

use std::net::{SocketAddr, IpAddr, Ipv4Addr};

/// Checks if a given `SocketAddr` is within the specified local IP ranges:
/// - 127.0.0.1 (loopback address)
/// - 10.0.0.0/8
/// - 172.16.0.0/12
/// - 192.168.0.0/16
fn is_local(addr: &SocketAddr) -> bool {
    match addr.ip() {
        IpAddr::V4(ip) => {

cmcconnell1

Kubectl Cheat Sheet

• focusing on kubectl commands commonly used for development, debugging, and maintenance tasks.
• This can be imported as markdown and saved as a Confluence page etc. for easy reference.

---

Overview

This cheat sheet covers some essential kubectl commands for platform engineers. It includes syntax examples for inspecting resources, managing configurations, debugging, and performing essential tasks.

---

cmcconnell1

Cheat-sheet / troubleshooting guide for tracking down issues between Prometheus and Grafana when metrics are not showing up. This guide assumes Prometheus is collecting metrics but Grafana is not displaying them.

1. Verify Prometheus Service Status

Ensure that the Prometheus service is up and running and accessible within the Kubernetes cluster.

kubectl get pods -n <prometheus-namespace> -l app=prometheus
kubectl get svc -n <prometheus-namespace> -l app=prometheus

cmcconnell1

# http://documentup.com/skwp/git-workflows-book
[user]
	name = First Last
	email = [email protected]
  #token =
[url "[email protected]:"]
	insteadOf = https://github.com/

[core]
	excludesfile = /Users/youruserid/.gitignore_global

cmcconnell1

#!/bin/bash

# gcloud configuration options to reduce output verbosity:
# gcloud config set core/log_http False;
# gcloud config set core/user_output_enabled True;
# debug, info, warning, error, and none
# gcloud config set core/verbosity warning;

function usage() {
    printf "\nUsage: $0 [-help ] [-h]\n"

cmcconnell1

#!/usr/bin/env python3

import boto3
import awspricing
import os

# example using lyfts awspricing module to get global AWS region EC2 on-demand and reserved instance pricing 
# created as answer/response for another user on realypython slack.

# ./simple-awspricing.py

cmcconnell1

2020-07-27T16:33:53.349-07:00
2020-07-27T23:33:53.349Z	fa882d3a-bfeb-579f-b680-7aa3d978a21f	INFO	{
  Records: [
    {
      messageId: '4ead6fb3-1461-46d2-beb7-29fecf44195a',
      receiptHandle: 'AQEB5K0sqP+/kRXkevHdoRCjkj5htZzO+TqfHmBcwbFP8vVgBVzFayhVsLzjUkULTOvLUN2MCHprzLoe4nLLvxDtXPi3j0x83EWpT8V56rttxYNUivcHG4JPpUepHc4G26WrIocNAch5vGU7wMZYvsI5zCoeWJaMQO5rHIYHLsZx1vrCLHuPshPe8RVSDEn/7ni/V5hNsszbgZSLrnFok2LuFPLD6rvIvUWy1jg4TrFcd7yX9+2J/uUgESBfA0Pp8vY+A/nEzZ4oD9zpMWwWdgXF3JV7Pfe7AR5xSKGGsFs8M7Q=',
      body: '{"id":916373631,"repositoryName":"cmcc-test-runner","repositoryOwner":"terradatum","eventType":"check_run","installationId":10551986}',
      attributes: [Object],
      messageAttributes: {},
      md5OfBody: 'bc2b7f5c76ad9b37b1e23e97ce2a5519',

cmcconnell1

#!/usr/bin/env bash
# ref: https://gist.github.com/ericchiang/d2a838ddad3f44436ae001a342e1001e
# thanks to ericchiang for the initial gist, just tweaked for macos or linux and dynamic file naming.
# Creates kubeconfig files using tokens.
# Copy these files to where the ci or cd processes/envs run kubectl commands--i.e.: jenkins, etc.
#
# Usage ./k8s-service-account-kubeconfig.sh ( namespace ) ( service account name )
# i.e.:  k8-sevice-account-kubeconfig.sh ci ci
# i.e.:  k8-sevice-account-kubeconfig.sh cd cd
# this is for the naming the kubeconfig file naming us "kubeconfig-$KUBE_USER"

cmcconnell1

# this is an example offered as proposal to include in kube-aws docs/examples 
# ref: https://github.com/kubernetes-incubator/kube-aws/issues/1050
clusterName: opsinfra
s3URI: s3://my-bucket-kube-aws-us-west-1/
releaseChannel: stable
amiId: "ami-0a86d340ea7fde077"
disableContainerLinuxAutomaticUpdates: true
apiEndpoints:
- # The unique name of this API endpoint used to identify it inside CloudFormation stacks
  name: default

cmcconnell1

clusterName: opsinfra
s3URI: s3://my-bucket-kube-aws-us-west-1/
releaseChannel: stable
amiId: "ami-0a86d340ea7fde077"
disableContainerLinuxAutomaticUpdates: true
apiEndpoints:
- # The unique name of this API endpoint used to identify it inside CloudFormation stacks
  name: default
  dnsName: opsinfra.myfoo.com
  loadBalancer: