coltenkrauter

# Tutorial: https://blog.creekorful.com/2020/01/how-to-expose-traefik-2-dashboard-securely-docker-swarm/
version: '3'

services:
  reverse-proxy:
    image: traefik:2.3
    command:
    # - '--log.level=DEBUG'
    - '--api=true'
    - '--api.dashboard=true'

mahemoff

Vim has a Terminal Mode!

Since v8.1 (May 2018), Vim has shipped with a built-in terminal. See https://vimhelp.org/terminal.txt.html or type :help terminal for more info.

Why use this? Mainly because it saves you jumping to a separate terminal window. You can also use Vim commands to manipulate a shell session and easily transfer clipboard content between the terminal and files you're working on.

Key Bindings

DmitryTsepelev

How to run examples:

1. Run $ createdb nplusonedb to create DB
2. Run specs $ rspec demo.rb

mkfares

Docker Swarm - Managing Configurations

Docker allows storing configurations outside docker images and running containers. This feature, named configs, eliminates the need to use volumes, bind-mount, or environment variables to pass configurations to containers.

The configs have the following characteristics:

• Configs are not encrypted (secrets are encrypted)
• Config values can be strings or binary data
• Config values have maximum size of 500 kB
• Configs are mounted as a file in the container filesystem. The default location is /<config-name> in the container
• Configs can be added or removed from a service at any time

ribice

go func() {
	for {
		err = rmq.Stream(cancelCtx)
		if errors.Is(err, rabbitmq.ErrDisconnected) {
			continue
		}
		break
	}
}()

ahmubashshir

window:
  dynamic_padding: true
  decorations: none
  startup_mode: Fullscreen
font:
  normal:
    family: Source Code Pro
    style: SemiBold
  bold:
    family: Source Code Pro

garethrees

diskutil list
diskutil unmountDisk /dev/disk2
diskutil eraseDisk FAT32 SANDISK /dev/disk2

johnnypea

# Run the last command as root
sudo !!
# Serve current directory tree at http://$HOSTNAME:8000/
python -m SimpleHTTPServer
# Save a file you edited in vim without the needed permissions
:w !sudo tee %
# change to the previous working directory
cd -
# Runs previous command but replacing
^foo^bar

vadv

Finite state machine in PostgreSQL

This document will not disclose the topic why you need fsm.

But if you implement fsm, then you need to do it as nearly as possible in the data.

This document will explain how you can implement it with PostgreSQL and gives developers maximum freedom.

Schema

tsrivishnu

Increasing fs.inotify.max_user_watches for Docker images

TL;DR You can't set those for an image during build time becasue Docker takes the sysctl configuration from the Host. So, set the config on your host machine.

As in this link, to increase the maximum watchers, we need set fs.inotify.max_user_watches to a higher number in /etc/sysctl.conf.