zulhfreelancer

#!/bin/bash

# This script is for Mac OSX users. If you are on Linux, replace 'gxargs' with 'xargs'.
# To install 'gxargs' command using Homebrew, run 'brew install findutils' first.

# Without parallel (ideal for small number of pods)
kubectl get pods --all-namespaces | grep Evicted | awk '{print $2 " --namespace=" $1}' | gxargs -n 1 -d '\n' bash -c 'kubectl delete pod $0 $1'

# With parallel (ideal for big number of pods)
# To install 'parallel' command using Homebrew, run 'brew install parallel' first.

zulhfreelancer

How to view/extract a specific/current context kubeconfig?

If you have multiple Kubernetes contexts (list them by kubectl config get-contexts) and you want to view or extract the kubeconfig just for current/selected context, you can use one of the following command:

$ kubectl config view --minify --flatten

OR

zulhfreelancer

#!/bin/bash

# Step 1 - Install Tailscale
sudo apt-get install apt-transport-https && \
curl -fsSL https://pkgs.tailscale.com/stable/raspbian/buster.gpg | sudo apt-key add - && \
curl -fsSL https://pkgs.tailscale.com/stable/raspbian/buster.list | sudo tee /etc/apt/sources.list.d/tailscale.list && \
sudo apt-get update && \
sudo apt-get install -y tailscale && \
sudo tailscale up

zulhfreelancer

# Method #1
whois $(whois $(curl -s icanhazip.com) | grep origin | awk '{print $2}') | grep -i descr | cut -d: -f2- | tail -n1 | xargs

# Method #2
whois $(whois $(curl -s icanhazip.com) | grep origin | awk '{print $2}') | grep -i 'org-name\|orgname' | cut -d: -f2- | tail -n1 | xargs

# Method #3
whois $(curl -s icanhazip.com) | grep -i 'org-name\|orgname' | cut -d: -f2- | tail -n1 | xargs

zulhfreelancer

#!/bin/bash
vcgencmd measure_temp
vcgencmd get_throttled
sysbench --test=cpu --cpu-max-prime=20000 --num-threads=4 run >/dev/null 2>&1
vcgencmd measure_temp
vcgencmd get_throttled
sysbench --test=cpu --cpu-max-prime=20000 --num-threads=4 run >/dev/null 2>&1
vcgencmd measure_temp
vcgencmd get_throttled
sysbench --test=cpu --cpu-max-prime=20000 --num-threads=4 run >/dev/null 2>&1

zulhfreelancer

# Require 'jq'
# https://stedolan.github.io/jq/

helm list -A -o json | jq -r '.[] | .name + " " + .namespace' | xargs -n2 sh -c 'helm uninstall $1 -n $2' sh

zulhfreelancer

# +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
# IMPORTANT
# Make sure you already create an ingress rule for the port that you want to open in Oracle Cloud virtual firewall aka
# "Security Lists". This tutorial might be useful for you:
# ---> https://youtu.be/1AIXULHjabQ
# +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

# SSH into the instance
$ ssh <username>@<ip_address>

zulhfreelancer

Git: how to count number of uncommited files?

$ git status -uall --porcelain | wc -l

zulhfreelancer

kubectl run debug --rm -i --tty --restart=Never --image=alpine --namespace=default -- /bin/sh

zulhfreelancer

List of websites that can return IP address

• https://checkip.amazonaws.com
• https://icanhazip.com
• https://ifconfig.io
• https://ifconfig.co
• https://jsonip.com