{"id":732,"date":"2016-10-01T12:47:30","date_gmt":"2016-10-01T12:47:30","guid":{"rendered":"https:\/\/blog.absam.io\/?p=732"},"modified":"2016-10-01T12:47:30","modified_gmt":"2016-10-01T12:47:30","slug":"instalando-o-docker","status":"publish","type":"post","link":"https:\/\/absam.io\/blog\/instalando-o-docker\/","title":{"rendered":"Instalando o Docker"},"content":{"rendered":"

J\u00e1 explicamos um pouco sobre o Docker em nossos posts, hoje vamos aprofundar um pouco mais mostrando passo a passo de como instalar o Docker sem erros.<\/p>\n

Vamos l\u00e1?<\/p>\n

Nesse exemplo estamos utilizando o Ubuntu 14.04 (LTS), mas pode ser realizado com outras vers\u00f5es. Vamos ter algumas altera\u00e7\u00f5es em outras vers\u00f5es, vamos mostrar cada uma ao longo do tutorial.<\/p>\n

Primeiramente vamos precisar de acesso root, ou basta utilizar o comando “sudo” antes de cada comando para ter privil\u00e9gios root.<\/p>\n

Vamos atualizar as informa\u00e7\u00f5es do pacote:<\/p>\n

$ sudo apt-get update<\/strong><\/p><\/blockquote>\n

Agora vamos garantir que os certificados e o pacote apt-transport-https estejam funcionando corretamente:<\/p>\n

$ sudo apt-get install apt-transport-https ca-certificates<\/strong><\/p><\/blockquote>\n

Feito isso vamos adicionar uma nova chave GPG:<\/p>\n

$ sudo apt-key adv –keyserver hkp:\/\/p80.pool.sks-keyservers.net:80 –recv-keys 58118E89F3A912897C070ADBF76221572C52609D<\/strong><\/p><\/blockquote>\n

Vamos at\u00e9 o diret\u00f3rio “\/etc\/apt\/sources.list.d<\/strong>” e verificamos se existe um arquivo chamado “docker.list”. Se n\u00e3o existir, basta criar o arquivo.<\/p>\n

Devemos editar esse arquivo, vou utilizar um editor simples e nativo do Ubuntu, o nano.<\/p>\n

$ nano docker.list<\/strong><\/p><\/blockquote>\n

Entrando no editor vamos apagar todas as linhas existentes no arquivo.<\/p>\n

Agora entra a parte da vers\u00e3o do Ubuntu que voc\u00ea est\u00e1 utilizando, vou mostrar com a vers\u00e3o Trusty 14.04 que \u00e9 a que estou utilizando e em seguida mostro como fica em outras vers\u00f5es. Vamos adicionar a seguinte linha:<\/p>\n

deb https:\/\/apt.dockerproject.org\/repo ubuntu-trusty main<\/strong><\/p><\/blockquote>\n

Lembrando que essa linha \u00e9 para a vers\u00e3o 14.04 do Ubuntu, para outras vers\u00f5es basta seguir essa lista:<\/p>\n

Ubuntu Precise 12.04 (LTS):<\/p>\n

deb https:\/\/apt.dockerproject.org\/repo ubuntu-precise main<\/strong><\/p><\/blockquote>\n

Ubuntu Wily 15.10:<\/p>\n

deb https:\/\/apt.dockerproject.org\/repo ubuntu-wily main<\/strong><\/p><\/blockquote>\n

Ubuntu Xenial 16.04 (LTS):<\/p>\n

deb https:\/\/apt.dockerproject.org\/repo ubuntu-xenial main<\/strong><\/p><\/blockquote>\n

Feito isso vamos salvar o arquivo, se estiver utilizando o nano basta apertar CTRL+X, <\/strong>digitar Y<\/strong> e da um Enter<\/strong>.<\/p>\n

Vamos retirar o reposit\u00f3rio lxc-docker <\/strong>caso exista, o Ubuntu vem por padr\u00e3o com este reposit\u00f3rio, mas n\u00e3o vai ser ele que iremos utilizar.<\/p>\n

$ sudo apt-get purge lxc-docker<\/strong><\/p><\/blockquote>\n

Agora vamos ter que garantir que o APT est\u00e1 utilizando o reposit\u00f3rio correto:<\/p>\n

$ apt-cache policy docker-engine<\/strong><\/p><\/blockquote>\n

Feito isso vamos instalar os pacotes recomendados e j\u00e1 podemos instalar o docker:<\/p>\n

$ sudo apt-get install linux-image-extra-$(uname -r) linux-image-extra-virtual<\/strong><\/p><\/blockquote>\n

Vamos novamente atualizar:<\/p>\n

$ sudo apt-get update<\/strong><\/p><\/blockquote>\n

Espere acabar de instalar os pacotes e finalmente o docker poder\u00e1 ser instalado sem nenhum erro, basta executar o comando:<\/p>\n

$ sudo apt-get install docker-engine<\/strong><\/p><\/blockquote>\n

Vamos verificar se o servi\u00e7o j\u00e1 est\u00e1 rodando:<\/p>\n

$ sudo service docker start<\/strong><\/p><\/blockquote>\n

Vai retornar a seguinte mensagem: “start: Job is already running: docker”<\/strong>, isso significa que o docker est\u00e1 em execu\u00e7\u00e3o.<\/p>\n

Docker instalado com sucesso.<\/p>\n

Nos pr\u00f3ximos tutoriais vamos mostrar como executar os container e nos familiarizar mais com o Docker.<\/p>\n

 <\/p>\n

Abra\u00e7o.<\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

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