Vagrant para ambiente de dev

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Há alguns dias, perdi um bom tempo tendo que acertar algumas configurações para um servidor WAMP. Sim, isso me irritou, pois como rodar um Apache no Ubuntu é mais fácil eu demorei para achar como configurar. Ai eu tinha que configurar um LAMP e depois um WAMP, isso me deixou um pouco irritado, pois eu fiquei pensando, deveria ter algo melhor para fazer isso.

Mas tudo isso é apenas algo trabalhoso que pode ser feito, não chega a ser um grande problema, agora, imagine que a sua aplicação usa PHP, MySQL, Memcached, Redis, MongoDB e para terminar a festa, uma API RestFul feita em Java rodando no Apache Tomcat. Isso para um projeto, agora pense nos inúmeros ambientes que podemos precisar em uma mesma máquina, instalando tudo isso estaríamos sobrecarregando essa máquina, deixando até as tarefas mais simples como responder um e-mail complicadas de serem executadas pela demora na resposta da máquina.
Agora, você poderia ir desativando e ativando os serviços conforme necessário, porem isso também seria trabalhoso. É nesse ponto que entra o Vagrant. Nele podemos subir uma interface mais próxima ao nosso servidor e habilitar e desabilitar ele com apenas um comando. Como nem tudo na vida é fácil, ainda vamos precisar configurar o ambiente, porem isso sera feito apenas uma vez.

Site Vagrant

Vamos agora ao que interessa 🙂

Para o Vagrant funcionar, precisamos ter um gerenciador de máquinas virtuais, o Vagrant suporta VirtualBox, VMware e Hiper-V. Para nosso teste vamos utilizar a VirtualBox, ela pode ser baixada aqui.

Vamos precisar também baixar o Vagrant Aqui.

Depois dele instalado precisamos iniciar o Vagrant em alguma pasta, da mesma forma que fazemos para o git.

vagrant init

Esse comando vai criar o Vagrantfile, esse arquivo sera usado mais a frente para fazer algumas configurações.

O Vagrant, funciona com “boxes”, que são as VMs. No site vagrantbox.es você pode baixar a box que quiser. Eu escolhi a precise32 para demonstrar.

vagrant box add precise32 http://files.vagrantup.com/precise32.box

Ai só esperar baixar e partir para a configuração.

vagrant up

Esse comando ira iniciar a VM.

Quando ela estiver iniciado, basta acessar ela via ssh e configurar da forma que achar melhor.

vagrant ssh

Se por acaso você fizer merda, basta destruir a VM, depois disso basta iniciar e acessar via ssh.

vagrant destroy

Agora vamos configurar o Vagrantfile.


Vagrant.configure(2) do |config|
    config.vm.box = "ubuntu32"

    config.vm.network :forwarded_port, host: 8080, guest: 80
    config.vm.network :forwarded_port, host: 3306, guest: 3306
end

Com essa configuração, estamos fazendo um redirecionamento de portas, apontando as portas do host (minha máquina) para o guest (VM).
Bom, eu não sei muito sobre o Vagrantfile, mas aqui esta a sua documentação.

Até aqui falamos como configurar, subir e bla bla bla. Agora vamos falar sobre o motivo de usarmos o Vagrant e não a VM direto.

A parte interessante do uso do Vagrant é o fato que ele já monta uma unidade de disco “/vagrant” dentro da VM, essa pasta é a mesma que você fez o “vagrant init”.

Se ainda não consegui te convencer, seguem alguns dos meus motivos para usar o Vagrant.

  • Todo o trabalho para instalar uma VM
  • “vagrant destroy” desfaz toda a merda que você fez
  • Redirecionamento de portas de forma simples
  • “vagrant up” tudo funcionando “vagrant halt” seu computador fica limpo
  • Monta uma unidade de disco por padrão

Acho que é isso, escrevi bastante aqui, espero que tenham gostado.

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Servidor LAMP

Hoje vou explicar como podemos criar um servidor LAMP. Essa postagem será útil se você utiliza o vagrant, sua máquina ou queria criar um servicor dentro da Amazon AWS, que é o ambiente que vamos utilizar.

Depois criarmos o servidor na AWS, precisamos acessar ele via SSH.
A primeira coisa que precisamos fazer é atualizar a lista de pacotes.

sudo apt-get update

Assim que terminar de atualizar os pocotes você pode dar início as instalações.

O primeiro passo é instalar o índio veio do Apache.

sudo apt-get install apache2

Agora, vamos a configuração de um site no apache. Com esse arquivo de exemplo, vamos montar o site.

Copie o conteúdo acima para o arquivo abaixo.

sudo nano /etc/apache2/sites-available/sample.conf

O servidor vai começar a responder para esse site apenas quando for ativado.

a2ensite sample.conf
sudo a2enmod rewrite
sudo service apache2 restart

O comando “sudo a2enmod rewrite” é para ativar o módulo de reescrita de URL do apache, ele é um adicional para o nosso caso, mas é obrigatório para o Zend, por esse motivo já coloquei ele aqui.

O segundo passo é o MySQL. Essa parte é sem segredos, vai executar o comando e ele vai pedir usuário e senha no processo.

sudo apt-get install mysql-server-5.5

Por fim, o PHP.

sudo apt-get install php5 php5-mysql

Aqui eu passei 2 pacotes para ele baixar, o “php5” é o PHP em si, o “php5-mysql” é o driver para do PHP para o MySQL.

Com tudo feito, fica assim:
Apache Sample