Reza r6m

RKE2 commands

Updated on May 29 to accommodate etcd container not having /bin/sh available anymore.

Install

curl -sL https://get.rke2.io | sh
systemctl daemon-reload
systemctl start rke2-server

📂 Minimize allocations in Go

Protobuf

Working with protobuf in Go puts significant load on the memory subsystem, as protobuf-generated structures often contain a significant amount of pointers.

One way to minimize the number of allocations is to allocate all the fields at the same time, and then use internal pointers to wire them up.

import (
 // ...
 "github.com/rs/cors" 
)

// ...
mux := runtime.NewServeMux()
proto.RegisterXYZServiceHandler(ctx, mux, conn)

Practice Consul, Nomad in Production Part 1- Setup Cluster

This cluster will be set up for 3 servers, each server will run (Nomad server/client + Consul server/client)

Server Information

Plans

# https://stackoverflow.com/a/12019115/2272992 by Awk
^(?=.{8,20}$)(?![_.])(?!.*[_.]{2})[a-zA-Z0-9._]+(?<![_.])$
 └─────┬────┘└───┬──┘└─────┬─────┘└─────┬─────┘ └───┬───┘
       │         │         │            │           no _ or . at the end
       │         │         │            │
       │         │         │            allowed characters
       │         │         │
 │ │ no __ or _. or ._ or .. inside

Integrating Slate into a Rails app

Want to use the excellent rich text editor Slate in a Rails app? Beware – since you'll be integrating React with your Rails app, it'll turn out pretty complicated and you'll have to do things (e.g. start server, managing dependencies, etc.) a bit differently than before. Let's start.

1. Install `react_on_rails`

react_on_rails is pretty much the best option for integrating React into Rails. Install it like so:

Add this to your gemfile:

	import { Controller, Get, Req, Res, UseGuards } from '@nestjs/common';
	import { Request, Response } from 'express';
	import { GoogleOauthGuard } from './google-oauth.guard';

	@Controller('auth/google')
	export class GoogleOauthController {
	constructor(private jwtAuthService: JwtAuthService) {}

	@Get()
	@UseGuards(GoogleOauthGuard)

	package main

	import (
	"net/http"
	"time"

	"golang.org/x/time/rate"
	)

	// ThrottledTransport Rate Limited HTTP Client

	function slice() {
	local slice_width="${SLICEW:-1080}"
	local width=$(identify -format "%[w]" $1)
	local slices=$(($width/$slice_width))
	local name="${1%.*}"

	echo -e "slice ($slices x $slice_width) for image $1"
	convert -crop "${slices}x1@" $1 "${name}-%d.png"
	}

	## Note, this file is written by cloud-init on first boot of an instance
	## modifications made here will not survive a re-bundle.
	## if you wish to make changes you can:
	## a.) add 'apt_preserve_sources_list: true' to /etc/cloud/cloud.cfg
	## or do the same in user-data
	## b.) add sources in /etc/apt/sources.list.d
	## c.) make changes to template file /etc/cloud/templates/sources.list.tmpl

	# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
	# newer versions of the distribution.