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docker attach  – Acessar dentro do container e trabalhar a partir dele.
docker build   – A partir de instruções de um arquivo Dockerfile eu possa criar uma imagem.
docker commit  – Cria uma imagem a partir de um container.
docker cp      – Copia arquivos ou diretórios do container para o host.
docker create  – Cria um novo container.
docker diff    – Exibe as alterações feitas no filesystem do container.
docker events  – Exibe os eventos do container em tempo real.
docker exec    – Executa uma instrução dentro do container que está rodando sem precisar atachar nele.
docker export  – Exporta um container para um arquivo .tar.

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Enable Docker Remote API with TLS client verification

Docker's Remote API can be secured via TLS and client certificate verification.
First of all you need a few certificates and keys:

• CA certificate
• Server certificate
• Server key
• Client certificate
• Client key

Create certificate files

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Passos para configurar um resgitry private em um cluster kubernetes

# Gerando os certificados para o registry private
$ openssl genrsa -out "/etc/pki/tls/private/regitry.key" 4096
$ openssl req -x509 -sha512 -nodes -newkey rsa:4096 -days 730 -keyout /etc/pki/tls/private/registry.key \
 -out /etc/pki/tls/certs/registry.crt
$ openssl req -new -x509 -text -key registry.key -out gitlab-registry.cert

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Sobre kubectl

O utilitário kubectl permite que você interfira com o gerenciador de cluster Kubernetes. Por exemplo, você pode adicionar e excluir nós, pods, controladores de replicação e serviços. Você também pode verificar seu status, e assim por diante.

Comandos Basicos

#Exemplos
kubectl get pv
kubectl get pvc
kubectl get pods

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DevOps started out as "Agile Systems Administration". In 2008, Andrew Shafer did a talk called "Agile Infrastucture" addressing issues around involving more of the company in the same disciplines as programmers.

In 2009, Patrick Debois created "DevOpsDays" conference to help to bring it to light. However, it wouldn't begin to trend until about 2010, when people would begin to describe it as a standalone discipline.

Today, DevOps goes beyond just developers, systems administration and infrastructure, its about [dev, ops, agile, cloud, open source and business](https://blogs.the451group.com/opensource/2010/03/03/devops-mixing-dev-ops-agile-cloud-open-source-and-busi

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# https://www.terraform.io/downloads.html

provider "aws" {
    region = "us-east-1"
}

resource "aws_security_group" "ec24a93e67" {
    description = "launch-wizard-1 created 2019-03-19T23:42:03.009-03:00"
    name = "launch-wizard-1"
    vpc_id = "vpc-0dd309e6e0da526ed"

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# https://www.terraform.io/downloads.html

provider "aws" {
    region = "us-east-1"
}

resource "aws_security_group" "ec24a93e67" {
    description = "launch-wizard-1 created 2019-03-19T23:42:03.009-03:00"
    name = "launch-wizard-1"
    vpc_id = "vpc-0dd309e6e0da526ed"

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# t2.micro node with an AWS Tag naming it "HelloWorld"
provider "aws" {
  region = "us-west-2"
}
data "aws_ami" "ubuntu" {
  most_recent = true
  filter {
    name   = "name"
    values = ["ubuntu/images/hvm-ssd/ubuntu-trusty-14.04-amd64-server-*"]
  }