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Kubectl output options

Let's look at some basic kubectl output options.

Our intention is to list nodes (with their AWS InstanceId) and Pods (sorted by node).

We can start with:

kubectl get no

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About

• I faced bandwidth issues between a WG Peer and a WG server. Download bandwidth when downloading from WG Server to WG peer was reduced significantly and upload bandwidth was practically non existent.
• I found a few reddit posts that said that we need to choose the right MTU. So I wrote a script to find an optimal MTU.
• Ideally I would have liked to have run all possible MTU configurations for both WG Server and WG Peer but for simplicity I choose to fix the WG Server to the original 1420 MTU and tried all MTUs from 1280 to 1500 for the WG Peer.

Testing

• On WG server, I started an iperf3 server
• On WG peer, I wrote a script that does the following:
  • wg-quick down wg0
• Edit MTU in the /etc/wireguard/wg0.conf file

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#!/usr/bin/env bash

NODESAPI=/api/v1/nodes

function getNodes() {
  kubectl get --raw $NODESAPI | jq -r '.items[].metadata.name'
}

function getPVCs() {
  jq -s '[flatten | .[].pods[].volume[]? | select(has("pvcRef")) | '\

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security and hardening options for systemd service units

A common and reliable pattern in service unit files is thus:

NoNewPrivileges=yes
PrivateTmp=yes
PrivateDevices=yes
DevicePolicy=closed
ProtectSystem=strict

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#!/usr/bin/env bash
cd ~/
mkdir -p ~/.local/bin
wget "https://discordapp.com/api/download/canary?platform=linux&format=tar.gz" -O discord.tar.gz
tar -xvf discord.tar.gz -C ~/.local/bin
sudo ln -s ~/.local/bin/DiscordCanary/discord.png /usr/share/icons/discord.png
sudo ln -s ~/.local/bin/DiscordCanary/DiscordCanary /usr/bin
wget https://gist.githubusercontent.com/AdrianKoshka/a12ca0bfe2f334a9f208aff72f8738c3/raw/9d606ad7ce7cc1dd23f6a99993e2396540538a02/discord.desktop -O discord.desktop
mkdir -p ~/.local/share/applications/
mv ~/discord.desktop ~/.local/share/applications/

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#!/bin/bash
#####################################################
# Name: Bash CheatSheet for Mac OSX
# 
# A little overlook of the Bash basics
#
# Usage:
#
# Author: J. Le Coupanec
# Date: 2014/11/04

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MY_BASH_BLUE="\033[0;34m" #Blue
MY_BASH_NOCOLOR="\033[0m"
HISTTIMEFORMAT=`echo -e ${MY_BASH_BLUE}[%F %T] $MY_BASH_NOCOLOR `
HISTSIZE=20000
HISTFILESIZE=20000

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{
    "output": {
        "bass_enhancer": {
            "amount": 22.0,
            "blend": 0.0,
            "floor": 10.0,
            "floor-active": true,
            "harmonics": 9.999999999999995,
            "input-gain": 0.0,
            "output-gain": -8.0,

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Web

http-tunnel - Tunnel tcp connection through http in Python

sshtunnel - SSH tunnels to remote server

PycURL - Python interface to libcurl

urllib3 - HTTP library with thread-safe connection pooling, file post support, sanity friendly, and more

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Timers provide a great help in troubleshooting network problems. All values are
reported in milliseconds (ms). These timers should be used in conjunction with
the session termination flags. In TCP mode with "option tcplog" set on the
frontend, 3 control points are reported under the form "Tw/Tc/Tt", and in HTTP
mode, 5 control points are reported under the form "TR/Tw/Tc/Tr/Ta". In
addition, three other measures are provided, "Th", "Ti", and "Tq".

Timings events in HTTP mode:

                 first request               2nd request