m99coder

# Configuration for Alacritty, the GPU enhanced terminal emulator.
# Full config: https://github.com/alacritty/alacritty/blob/master/alacritty.yml

env:
  TERM: xterm-256color

window:
  padding:
    x: 8
    y: 8

m99coder

Docker Swarm

Initialization

# on leader node
docker swarm init
docker node ls

# on worker nodes

m99coder

Docker Monitoring

Docker Stats

docker stats
docker stats \
  --format "table {{ .Name }} {{ .ID }} {{ .MemUsage }} {{ .CPUPerc }}"

m99coder

Install Docker Community Edition on CentOS

Based on Install Docker Engine on CentOS

$ # uninstall old versions
$ sudo yum remove docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \

m99coder

Run EC2 instance and install Docker

AWS EC2

How to install CLI

brew install awscli

m99coder

package main

import (
	"fmt"
	"sync"
)

type Fetcher interface {
	// Fetch returns the body of URL and
	// a slice of URLs found on that page.

m99coder

package main

import (
	"fmt"
	"golang.org/x/tour/tree"
)

func Walk(t *tree.Tree, ch chan int) {
	defer close(ch)
	// using a closure

m99coder

package main

import (
	"golang.org/x/tour/pic"
	"image"
	"image/color"
)

type Image struct {
	w, h int

m99coder

package main

import (
	"io"
	"os"
	"strings"
)

type rot13Reader struct {
	r io.Reader

m99coder

package main

import "golang.org/x/tour/reader"

type MyReader struct{}

func (r MyReader) Read(b []byte) (int, error) {
	for i := range b {
		b[i] = 65
	}