knutov

#!/bin/bash

#### NOTE:  This is a combined image file for maas images, lxd images, and Juju Steams.
#### The server name defaults to "images"

#### If creating a ssl cert, the following Subject Alternate Names should be used:
# DNS:$(hostname -f), DNS: $(hostname -s), DNS: maas-images, DNS: lxd-images, DNS: cloud-images, DNS: juju-images, DNS:images.linuxcontainers.org, DNS: us.images.containers.org, DNS: uk.images.containers.org, DNS: canonical.imagecontainers.org, DNS:cloud-images.ubuntu.com, DNS: streams.canonical.com

#### If using DNS poisoning/hijacking, ensure all the above domains resolve to the images contaier's IP address

knutov

-- Query the database to calculate a recommended innodb_buffer_pool_size
-- and get the currently configured value
-- The rollup as the bottom row gives the total for all DBs on the server, where each other row is recommendations per DB.

SELECT 
    TABLE_SCHEMA,
	CONCAT(CEILING(RIBPS/POWER(1024,pw)),SUBSTR(' KMGT',pw+1,1))
	Recommended_InnoDB_Buffer_Pool_Size,
	(
	SELECT 	CONCAT(CEILING(variable_value/POWER(1024,FLOOR(LOG(variable_value)/LOG(1024)))),SUBSTR(' KMGT',FLOOR(LOG(variable_value)/LOG(1024))+1,1))

knutov

Initialize a Repository for git-flow

git flow init -d

(Omit -d if you want to select values other than the defaults.)

Features

Start a New Feature

This creates a new branch based on develop and switches to it:

knutov

Moved to git repository: https://github.com/denji/nginx-tuning

NGINX Tuning For Best Performance

For this configuration you can use web server you like, i decided, because i work mostly with it to use nginx.

Generally, properly configured nginx can handle up to 400K to 500K requests per second (clustered), most what i saw is 50K to 80K (non-clustered) requests per second and 30% CPU load, course, this was 2 x Intel Xeon with HyperThreading enabled, but it can work without problem on slower machines.

You must understand that this config is used in testing environment and not in production so you will need to find a way to implement most of those features best possible for your servers.

knutov

Simple automated GIT Deployment using GIT Hooks

Here are the simple steps needed to create a deployment from your local GIT repository to a server based on this in-depth tutorial.

How it works

You are developing in a working-copy on your local machine, lets say on the master branch. Most of the time, people would push code to a remote server like github.com or gitlab.com and pull or export it to a production server. Or you use a service like deepl.io to act upon a Web-Hook that's triggered that service.

knutov

parted /dev/nvme0n1 unit s p free
parted /dev/nvme0n1 print free

parted /dev/nvme0n1 mkpart primary zfs $START 100%
parted /dev/nvme0n1 print free


---

# https://gist.github.com/Miouge1/4ecced3a2dcc825bb4b8efcf84e4b17b

knutov

Enabling full Hyper-V support for Ubuntu

Install packages

Short version: See docs.microsoft.com link below.

Ubuntu 17.04 and later

1. sudo apt-get update
2. sudo apt-get install linux-image-virtual linux-tools-virtual linux-cloud-tools-virtual

knutov

#!/usr/bin/perl
package World::Schema;
use base qw/DBIx::Class::Schema::Loader/;
$ENV{SCHEMA_LOADER_BACKCOMPAT} = 1;
my $schema = World::Schema->connect("DBI:mysql:database=world", "world", "world1",
    {PrintError => 1, RaiseError => 1, mysql_enable_utf8 => 1});

package main;
use DBIx::Connector;
use DBIx::Struct;

knutov

box-shadow:inset 0 1px 0 rgba(255,255,255,.6), 0 22px 70px 4px rgba(0,0,0,0.56), 0 0 0 1px rgba(0, 0, 0, 0.3);

knutov

Hi:

perl -e 'print "hello world!\n"'

A simple filter:

perl -ne 'print if /REGEX/'

Filter out blank lines (in place):