dpino

#!/usr/bin/env bash

# set -x

if [[ $EUID -ne 0 ]]; then
    echo "You must be root to run this script"
    exit 1
fi

# Returns all available interfaces, except "lo" and "veth*".

mtds

Virtual Networking on Linux

In the Linux Kernel, support for networking hardware and the methods to interact with these devices is standardized by the socket API:

                +----------------+
                |   Socket API   |
                +-------+--------+
                        |
User space              |

superseb

Change default DNS nameserver used by Kubernetes pods

This can be applied generically but usually applies to Linux nodes that have a local caching nameserver running, which means pointing to an IP in the loopback range (127.0.0.0/8). Ubuntu 18.04 Bionic Beaver does this by default.

Option 1: Change host configuration

sudo systemctl mask systemd-resolved
rm -f /etc/resolv.conf
sudo ln -s /run/systemd/resolve/resolv.conf /etc/resolv.conf

dunderrrrrr

GeoIP Block NGINX Ubuntu 20.04

Block or filter IPs based on location in Nginx (tested on 1.18.0) on Ubuntu 20.04.

Install Nginx modules

To make use of the geographical filtering, we must first install the Nginx GeoIP module as well as the GeoIP database containing the mappings between visitors’ IP addresses and their respective countries. To do so, let’s execute:

$ sudo apt install libnginx-mod-http-geoip geoip-database

cecilemuller

How to setup Let's Encrypt for Nginx on Ubuntu 18.04 (including IPv6, HTTP/2 and A+ SLL rating)

---

Virtual hosts

Let's say you want to host domains first.com and second.com.

Create folders for their files:

marcostolosa

Cloudflare's API Cheat-Sheet

VARIABLE	VALUE
EMAIL	The email address associated with your Cloudflare account.
KEY	The global API key associated with your Cloudflare account.
DOMAIN	The name of the domain to create a zone record for.
JUMP_START	If true, automatically attempts to fetch existing DNS records when creating a domain’s zone record
ZONE_ID	The unique ID of the domain’s zone record. Assigned by Cloudflare. Required when managing an existing zone record and its DNS records.

irazasyed

# -----------------------------------------------------------------------------------------
# Disable URL indexing by crawlers (FOR DEVELOPMENT/STAGE)
# -----------------------------------------------------------------------------------------

# Avoid search engines (Google, Yahoo, etc) indexing website's content
# http://yoast.com/prevent-site-being-indexed/
# http://code.google.com/web/controlcrawlindex/docs/robots_meta_tag.html
# Matt Cutt (from Google Webmaster Central) on this topic:
# http://www.youtube.com/watch?v=KBdEwpRQRD0

smijar

# Possibly obsolete: k3d create --name testcls1 --workers 3
k3d create --name testcls1 --workers 3 --server-arg "--no-deploy=traefik" --server-arg "--no-deploy=servicelb"

# UPDATE: in newer versions onwards, this has evolved to (thanks to comments below):
k3d cluster create --k3s-arg "--no-deploy=traefik@server:*"

mvadu

# The full public facing url
#root_url = %(protocol)s://%(domain)s:%(http_port)s/
root_url = http://localhost:80/grafana/

chiraggude

$ModLoad imfile
$InputFilePollInterval 10 
$PrivDropToGroup adm


#NGINX access file:

# Path to the file which you want to monitor
$InputFileName /home/logs/nginx-access.log