https://www.udemy.com/docker-compreendendo-e-utilizando
Este curso tem como objetivo capacitar o aluno a entender a diferença entre Container X Virtualização, prós e contras dessas tecnologias, iniciar seu aprendizado em Docker, implementar Docker (infraestrutura de container) em seu dia a dia. E mais ... Integração com outros sistemas, topicos avançados e tudo que você procura saber sobre Docker.
- Bem vindo
- Introdução ao modulo
- Conteiner ou Virtualização
- Entendendo o Docker - Parte 1
- Entendendo o Docker - Parte 2
- Entendendo o Docker - Parte 3
- Introdução ao modulo
- Instalação e configuração do Docker
- Introdução pratica ao Docker - Parte 1
- Introdução pratica ao Docker - Parte 2
- Introdução pratica ao Docker - Parte 3
- Introdução pratica a Containers - Revisão, novas operações e interações
- Privilegiando containers
- Descartando containers
- Trabalhando com variáveis de ambiente
- Trabalhando com mapeamento de portas - Parte 1
- Trabalhando com mapeamento de portas - Parte 2
- Trabalhando com volumes - Parte 1
- Trabalhando com volumes - Parte 2
- Linkando containers - Parte 1
- Linkando containers - Parte 2
- Inspecionando containers
- Exportando e Importando
- Introdução pratica a imagens
- Versionando imagens - Parte 1
- Versionando imagens - Parte 2
- Exportando e Importando
- Entendendo o arquivo Dockerfile
- Construindo aplicação pelo arquivo Dockerfile
- Construindo aplicação SSH com Dockerfile
- Introdução ao modulo
- Introdução ao modulo
- Parabéns
Em computação, virtualização é a simulação de uma plataforma de hardware, sistema operacional, dispositivo de armazenamento ou recursos de rede.
Cada vez mais empresas estão buscando formas de reduzir os custos e complexidade com o ambiente de TI.
A virtualização se tornou um componente chave para o desenvolvimento de uma estratégia eficiente na busca destes objetivos.
Alguns detalhes importantes:
- O conceito vem da antiga !
- Hipervisor é a camada de administração da virtualização
- Existe alguns tipos de virtualização, exemplo: Full Virtualização, Para-Virtualização
- Alguns exemplos de software/plataforma/hipervisor: Xen, Citrix XenServer, VirtualBox, VMWare
Um container é uma forma de virtualização no nível do sistema operacional, um ambiente totalmente isolado, simulando um sistema independente no mesmo host.
Com isso, é possível executar uma aplicação com todas as configurações necessárias(variáveis de ambiente, pacotes etc.) com o mínimo de impacto.
Alguns exemplos: FreeBSD Jails, OpenVZ, Outros ... LXC e Docker ...
CGroups é uma feature do Kernel que provê mecanismos para organização de Processos em forma de grupos e limita recursos de máquina como: Consumo de CPU, memória e I/O.
Namespace é uma feature que permite o sistema criar diversos contextos diferentes em um mesmo sistema, ou seja, permite criar diferentes ambientes independentes que são executados no sistema base.
Com namespace eu consigo isolar um processo do ambiente de outro processo permitindo até mesmo que dois ou mais processos possuam o mesmo PID, porém em ambientes isolados. Permite que um sistema possua múltiplas visões, ou seja, que o sistema seja observado de diversas maneiras diferentes.
- https://www.opencontainers.org/ (Padronização, Investimentos)
Porque com Docker você alcança a agilidade e controle das operações de TI construindo e executando qualquer aplicativo, em qualquer lugar!
Leve: Containers compartilham o mesmo kernel do host logo faz uso mais eficiente dos recursos do sistema dendo um overhead menor que maquina virtual e com seu sistema de "layers" reaproveita grande parte dos dados, logo deixa downloads e armazenamento bem mais eficiente
Seguro: Containers isolam aplicativos uns dos outros e da própria infra-estrutura fornecendo uma camada adicional de proteção
Agiliza processos: Com seus recursos de construção, herança, versionamento em segundos vocês realiza deploy da sua aplicações (ou aplicações) de forma inteligente e eficaz
Elimina inconsistência: Como Docker empacota tudo (o sistema, libs, dependências, configuração) dentro do recipiente é possível trabalhar no ambiente de desenvolvimento, da mesma forma que o de produção, é entrega-lo exatamente como deve estar
Torna suas aplicações portáveis e padronizada: Com os recursos Dockerfile, Dockerhub ou mesmo repositório git's em questão de segundos você distribuído (ou porta) sua aplicação de forma padronizada e documentada
O que mais: Link's entre containers, mapeamento de porta, restrição de recursos, deploy de ambiente (compose), gestão de volumes, descarte ao final --rm), Registry v2, Dockerhub etc ... Bem alguns termos: isolamento, segurança, produtividade, agilidade, INTELIGENCIA...
Componentes:
- Docker Engine/server: É o “Docker” propriamente dito. Ele é instalado nos Hosts e efetua a criação e a execução dos Containers de aplicações.
- Docker Client/cli: É o componente onde o administrador emite os comandos que serão enviados para o Docker Engine (server).
- Docker Hub: É um repositório de imagens dos Containers. Basta criar uma conta e começar a usá-lo nos projetos.
Recursos/Funções:
- Containers: Containers são criados a partir das imagens do Dockere eles são as instâncias reais de nossos containers. Eles podem ser iniciados, executados, parados, deletados, e movidos.
- Imagens: Uma imagem nada mais é do que um ambiente totalmente encapsulado e pronto para ser replicado onde desejar.
- Build (Dockerfiles): Dockerfile nada mais é do que um arquivo de definição onde é possível realizar ou preparar todo ambiente a partir de um script de execução.
- Volumes de dados: É uma função para realizarmos a persistência de dados uma vez que containers são projetados para descarta-lo após seu uso.
- Mapeamento de Porta: Por padrão Docker não exporta suas portas para o mundo real, Mapeamento de dados é a função para expor essas portas no host
- Link entre container: Links são a funções de um container se comunicar diretamente com outro sem a necessidade de expo-lo para a rede real.
- bootfs: Onde ficam o sistema de Boot do sistema e o Kernel.
- rootfs (read only): Inclui o sistema de arquivo do sistema, incluindo a arquitetura de diretório, em sistemas unix-like: /dev, /proc, /bin, /etc, /lib, /usr, e /tmp assim como os arquivos de configuração e binários do sistema.
- rootfs (read/write)
- Docker machine: É um componente para automatizar a criação dos hostspara o provisionamento de containers.
- Docker Swarm: é usado para a criação dos clusters dos Hosts Docker.
- Docker compose: É usado para definir as aplicações multi-container.
- Nativo apenas em LINUX
- Mac OS X
- Windows
AMBIENTE DO CURSO:
- VirtualBox 5.0.10 https://www.virtualbox.org/
- Ubuntu 14.04 Server
- Docker 1.9
# Preparando o ambientE
sudo apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D
sudo echo "deb https://apt.dockerproject.org/repo ubuntu-trusty main" > /etc/apt/sources.list.d/docker.list
sudo apt-get update
sudo apt-get purge lxc-docker
sudo apt-cache policy docker-engine
sudo apt-get install linux-image-extra-$(uname -r)
# Instalando
sudo apt-get install docker-engine
sudo service docker start
# Testando
sudo docker info
sudo docker run hello-world
Realizado:
DESCOMPLICANDO O DOCKER V1 - 05 - Instalando o Docker
$ sudo docker info
[sudo] password for josemalcher:
Containers: 0
Running: 0
Paused: 0
Stopped: 0
Images: 0
Server Version: 18.09.0
Storage Driver: overlay2
Backing Filesystem: extfs
Supports d_type: true
Native Overlay Diff: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
Volume: local
Network: bridge host macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: c4446665cb9c30056f4998ed953e6d4ff22c7c39
runc version: 4fc53a81fb7c994640722ac585fa9ca548971871
init version: fec3683
Security Options:
apparmor
seccomp
Profile: default
Kernel Version: 4.15.0-43-generic
Operating System: Ubuntu 18.04.1 LTS
OSType: linux
Architecture: x86_64
CPUs: 1
Total Memory: 1.923GiB
Name: serverubuntu
ID: #########################################(apagado)
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false
Product License: Community Engine
WARNING: No swap limit support
docker run hello-world
root@serverubuntu:/home/josemalcher# docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
d1725b59e92d: Pull complete
Digest: sha256:b3a26e22bf55e4a5232b391281fc1673f18462b75cdc76aa103e6d3a2bce5e77
Status: Downloaded newer image for hello-world:latest
Hello from Docker!
This message shows that your installation appears to be working correctly.
To generate this message, Docker took the following steps:
1. The Docker client contacted the Docker daemon.
2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
(amd64)
3. The Docker daemon created a new container from that image which runs the
executable that produces the output you are currently reading.
4. The Docker daemon streamed that output to the Docker client, which sent it
to your terminal.
To try something more ambitious, you can run an Ubuntu container with:
$ docker run -it ubuntu bash
Share images, automate workflows, and more with a free Docker ID:
https://hub.docker.com/
For more examples and ideas, visit:
https://docs.docker.com/get-started/
Comandos:
- docker ps
# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
- docker ps -a
# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
e2fa1d02a838 hello-world "/hello" 2 days ago Exited (0) 2 days ago gallant_banzai
- doker help ps
#docker help ps
Usage: docker ps [OPTIONS]
List containers
Options:
-a, --all Show all containers (default shows just running)
-f, --filter filter Filter output based on conditions provided
--format string Pretty-print containers using a Go template
-n, --last int Show n last created containers (includes all states) (default -1)
-l, --latest Show the latest created container (includes all states)
--no-trunc Don't truncate output
-q, --quiet Only display numeric IDs
-s, --size Display total file sizes
- docker run --name exemplo1 -d -t ubuntu
# docker run --name exemplo1 -d -t ubuntu
Unable to find image 'ubuntu:latest' locally
latest: Pulling from library/ubuntu
84ed7d2f608f: Pull complete
be2bf1c4a48d: Pull complete
a5bdc6303093: Pull complete
e9055237d68d: Pull complete
Digest: sha256:868fd30a0e47b8d8ac485df174795b5e2fe8a6c8f056cc707b232d65b8a1ab68
Status: Downloaded newer image for ubuntu:latest
6ce308ac8ac03f9e145b88de8d21391e8e31b559bc612a16f12c70db0993a547
# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
6ce308ac8ac0 ubuntu "/bin/bash" 47 seconds ago Up 43 seconds exemplo1
- docker run --name exemplo2 -i -t ubuntu /bin/bash
# docker run --name exemplo2 -i -t ubuntu /bin/bash
root@ac5245980fee:/#
# exit
exit
root@serverubuntu:/home/josemalcher#
- Crtl + p q
# docker run --name exemplo3 -i -t ubuntu /bin/bash
root@f040d3353ccc:/# # root@serverubuntu:/home/josemalcher# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
f040d3353ccc ubuntu "/bin/bash" About a minute ago Up About a minute exemplo3
6ce308ac8ac0 ubuntu "/bin/bash" 11 minutes ago Up 11 minutes exemplo1
- docker exec -i -t exemplo3 bash
# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
f040d3353ccc ubuntu "/bin/bash" 5 minutes ago Up 4 minutes exemplo3
6ce308ac8ac0 ubuntu "/bin/bash" 15 minutes ago Up 14 minutes exemplo1
root@serverubuntu:/home/josemalcher# docker exec -i -t exemplo3 bash
root@f040d3353ccc:/#
# docker exec -i -t exemplo3 ps aux
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.1 18508 3152 pts/0 Ss+ 00:19 0:00 /bin/bash
root 20 0.2 0.1 18508 3412 pts/1 Ss+ 00:29 0:00 bash
root 30 0.0 0.1 34400 2868 pts/2 Rs+ 00:29 0:00 ps aux
root@serverubuntu:/home/josemalcher# docker exec -i -t exemplo3 bash
root@f040d3353ccc:/#
root@serverubuntu:/home/josemalcher# docker exec -i -t exemplo3 ps aux
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.1 18508 3152 pts/0 Ss+ 00:19 0:00 /bin/bash
root 20 0.1 0.1 18508 3412 pts/1 Ss+ 00:29 0:00 bash
root 35 0.7 0.1 18508 3116 pts/2 Ss+ 00:29 0:00 bash
root 44 0.0 0.1 34400 2960 pts/3 Rs+ 00:30 0:00 ps aux
- docker exec exemplo3 kill -TERM 35
# docker exec -i -t exemplo3 ps aux
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.1 18508 3152 pts/0 Ss+ 00:19 0:00 /bin/bash
root 20 0.1 0.1 18508 3412 pts/1 Ss+ 00:29 0:00 bash
root 35 0.7 0.1 18508 3116 pts/2 Ss+ 00:29 0:00 bash
root 44 0.0 0.1 34400 2960 pts/3 Rs+ 00:30 0:00 ps aux
root@serverubuntu:/home/josemalcher# docker exec exemplo3 kill -TERM 35
root@serverubuntu:/home/josemalcher# docker exec -i -t exemplo3 ps aux
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.1 18508 3152 pts/0 Ss+ 00:19 0:00 /bin/bash
root 20 0.0 0.1 18508 3412 pts/1 Ss+ 00:29 0:00 bash
root 54 7.0 0.1 34400 2868 pts/2 Rs+ 00:31 0:00 ps aux
root@serverubuntu:/home/josemalcher#
- docker stop exemplo5
docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
ffe6225387b2 ubuntu "/bin/bash" 11 seconds ago Up 9 seconds exemplo5
f3014608eb41 ubuntu "/bin/bash" 34 seconds ago Up 31 seconds exemplo4
root@serverubuntu:/home/josemalcher# docker stop exemplo5
exemplo5
root@serverubuntu:/home/josemalcher# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
f3014608eb41 ubuntu "/bin/bash" About a minute ago Up About a minute exemplo4
- docker start exemplo5
docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
ffe6225387b2 ubuntu "/bin/bash" 2 minutes ago Exited (0) 2 minutes ago exemplo5
f3014608eb41 ubuntu "/bin/bash" 3 minutes ago Up 2 minutes exemplo4
f040d3353ccc ubuntu "/bin/bash" 36 hours ago Exited (0) 9 hours ago exemplo3
ac5245980fee ubuntu "/bin/bash" 36 hours ago Exited (0) 36 hours ago exemplo2
6ce308ac8ac0 ubuntu "/bin/bash" 36 hours ago Exited (0) 9 hours ago exemplo1
e2fa1d02a838 hello-world "/hello" 3 days ago Exited (0) 3 days ago gallant_banzai
root@serverubuntu:/home/josemalcher# docker start exemplo5
exemplo5
root@serverubuntu:/home/josemalcher# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
ffe6225387b2 ubuntu "/bin/bash" 3 minutes ago Up 3 seconds exemplo5
f3014608eb41 ubuntu "/bin/bash" 3 minutes ago Up 3 minutes exemplo4
- docker images
# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
ubuntu latest 1d9c17228a9e 6 days ago 86.7MB
hello-world latest 4ab4c602aa5e 3 months ago 1.84kB
- docker pull ubuntu:14.04
# docker pull ubuntu:14.04
14.04: Pulling from library/ubuntu
9b316e271c60: Pull complete
dea703e2e1f1: Pull complete
dd50fddc64ae: Pull complete
9d32d2e6dcde: Pull complete
Digest: sha256:2ceb8f8fef6dfa7433c992efdedc90c35b572747f34d9bac726e18a9e086e95e
Status: Downloaded newer image for ubuntu:14.04
root@serverubuntu:/home/josemalcher# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
ubuntu 14.04 7e4b16ae8b23 6 days ago 188MB
ubuntu latest 1d9c17228a9e 6 days ago 86.7MB
hello-world latest 4ab4c602aa5e 3 months ago 1.84kB
- docker run --name exemplo6 -d -t -p 80:80 nginx
# docker run --name exemplo6 -d -t -p 80:80 nginx
c5c75f48167d645330f1e704d4d4880e58c87c0837def6baae4e47c924be92e0
# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
c5c75f48167d nginx "nginx -g 'daemon of…" 2 minutes ago Up About a minute 0.0.0.0:80->80/tcp exemplo6
ffe6225387b2 ubuntu "/bin/bash" 7 hours ago Up 7 hours exemplo5
f3014608eb41 ubuntu "/bin/bash" 7 hours ago Up 7 hours exemplo4
- docker rm exemplo1
r# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
root@serverubuntu:/home/josemalcher# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
c5c75f48167d nginx "nginx -g 'daemon of…" 12 minutes ago Exited (0) About a minute ago exemplo6
ffe6225387b2 ubuntu "/bin/bash" 7 hours ago Exited (0) About a minute ago exemplo5
f3014608eb41 ubuntu "/bin/bash" 7 hours ago Exited (0) About a minute ago exemplo4
f040d3353ccc ubuntu "/bin/bash" 43 hours ago Exited (0) 15 hours ago exemplo3
ac5245980fee ubuntu "/bin/bash" 43 hours ago Exited (0) 43 hours ago exemplo2
6ce308ac8ac0 ubuntu "/bin/bash" 43 hours ago Exited (0) 15 hours ago exemplo1
e2fa1d02a838 hello-world "/hello" 3 days ago Exited (0) 3 days ago gallant_banzai
root@serverubuntu:/home/josemalcher# docker rm exemplo1
exemplo1
root@serverubuntu:/home/josemalcher# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
c5c75f48167d nginx "nginx -g 'daemon of…" 13 minutes ago Exited (0) About a minute ago exemplo6
ffe6225387b2 ubuntu "/bin/bash" 7 hours ago Exited (0) About a minute ago exemplo5
f3014608eb41 ubuntu "/bin/bash" 7 hours ago Exited (0) About a minute ago exemplo4
f040d3353ccc ubuntu "/bin/bash" 43 hours ago Exited (0) 15 hours ago exemplo3
ac5245980fee ubuntu "/bin/bash" 43 hours ago Exited (0) 43 hours ago exemplo2
e2fa1d02a838 hello-world "/hello" 3 days ago Exited (0) 3 days ago gallant_banzai
- docker rmi ubuntu:14.04
# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
nginx latest 7042885a156a 6 days ago 109MB
ubuntu 14.04 7e4b16ae8b23 6 days ago 188MB
ubuntu latest 1d9c17228a9e 6 days ago 86.7MB
hello-world latest 4ab4c602aa5e 3 months ago 1.84kB
root@serverubuntu:/home/josemalcher# docker rmi ubuntu:14.04
Untagged: ubuntu:14.04
Untagged: ubuntu@sha256:2ceb8f8fef6dfa7433c992efdedc90c35b572747f34d9bac726e18a9e086e95e
Deleted: sha256:7e4b16ae8b23e239ab03a413febb51e204e294cb2bf0e45cc4aa7bed7d7f704e
Deleted: sha256:31fee1a1223e18212fbfabdbc6c1d858539736e72ebc6e5656b5bbe1a6a3e6f0
Deleted: sha256:46eadf76580d8e4b62992ec2a5ad6fbe665a2315e249dae0f93b79137694b6bf
Deleted: sha256:e41a350db85f18619768eadfb3b8e4e72e07318486614a5acf708fdd45781c4c
Deleted: sha256:a1dfb45ac02d4300506f63948d1a9d1bc9e354d0643412e6b88cc9dec820216f
root@serverubuntu:/home/josemalcher# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
nginx latest 7042885a156a 6 days ago 109MB
ubuntu latest 1d9c17228a9e 6 days ago 86.7MB
hello-world latest 4ab4c602aa5e 3 months ago 1.84kB
- \Exemplo5\Dockerfile
- docker build -t nginx-exemplo:v2 .
# docker build -t nginx-exemplo:v2 .
Sending build context to Docker daemon 2.048kB
Step 1/3 : FROM nginx
---> 7042885a156a
Step 2/3 : RUN sed -i 's/Welcome to nginx!/Bem vindo ao exemplo 5 <br> Via Dockerfile/g' /usr/share/nginx/html/index.html
---> Using cache
---> b398a10ef777
Step 3/3 : RUN ls '/tmp'
---> Running in ffb671cb4939
Removing intermediate container ffb671cb4939
---> 653db82a75fd
Successfully built 653db82a75fd
Successfully tagged nginx-exemplo:v2
# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
nginx-exemplo v2 653db82a75fd 6 seconds ago 109MB
nginx-exemplo1 v1 b398a10ef777 5 minutes ago 109MB
nginx latest 7042885a156a 6 days ago 109MB
ubuntu latest 1d9c17228a9e 6 days ago 86.7MB
hello-world latest 4ab4c602aa5e 3 months ago 1.84kB
- docker run --name exemplo51 -d -t -p 80:80 nginx-exemplo:v2
# docker run --name exemplo51 -d -t -p 80:80 nginx-exemplo:v2
920d626b272026462879e3bd5de93bd7b89c7556e625a29a55e9672204f6a9bd
root@serverubuntu:/home/josemalcher/exemplo5# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
920d626b2720 nginx-exemplo:v2 "nginx -g 'daemon of…" 5 seconds ago Up 4 seconds 0.0.0.0:80->80/tcp exemplo51
- docker restart exemplo6
- docker pause exemplo6
- docker unpause exemplo6
- docker kill exemplo6
- docker attach exemplo6 (ctrl + p +q)
copiar aqrquivos para container:
- docker cp exemplo6:/tmp/arquivos1 ./ (copiar container ex6 para pasta local ./)
Nomear hostname
- docker run -it --name exemplo6.c --hostname exemplo6host ubuntu /bin/bash
# docker run -it --name exemplo6.b ubuntu /bin/bash
root@91bd5885378f:/#
root@91bd5885378f:/# exit
exit
root@serverubuntu:/home/josemalcher# docker run -it --name exemplo6.c --hostname exemplo6host ubuntu /bin/bash
root@exemplo6host:/#
Baixando img
- docker pull andyshinn/dnsmasq
Privilégio total:
- docker run -dt --name exemplo7 --privileged andyshinn/dnsmasq
Específico: (placa de rede)
- docker run -dt --name exemplo7 --cap-add=NET_ADMIN andyshinn/dnsmasq
Script bash para ficar verificando o status docker:
function docker.ps.loop(){
watch -n 3 -t "docker ps --format '{{.Names}},{{.Image}}\n{{.Status}}, PORTA: {{.Ports}}\n'"
}Recarregar o Bash: # source ~/.bashrc
- docker run -it --rm --name exemplo8 --hostname exempli8 -p 80:80 -v /home/josemalcher/exemplo8/index.html:/usr/share/nginx/html/index.html nginx-exemplo1:v1
"--rm" descarta o container ao sair.
docker run -i --rm --name exemplo8 --hostname exempli8 -p 80:80 -v /home/josemalcher/exemplo8/index.html:/usr/share/nginx/html/index.html nginx-exemplo1:v1
exemplo8,nginx-exemplo1:v1
Up 45 seconds, PORTAS: 0.0.0.0:80->80/tcp
-
v=A0502E01 ; docker run -it --rm --name $v --hostname $v -e 'X=varival1' --env='Y=variavel2' ubuntu /bin/bash
# v=A0502E01 ; docker run -it --rm --name $v --hostname $v -e 'X=varival1' --env='Y=variavel2' ubuntu /bin/bash
root@A0502E01:/# echo "Imprimindo valor de X: $X, Y:$Y e Z:$Z"
Imprimindo valor de X: varival1, Y:variavel2 e Z:
- v=A0502E02 ; docker run -it --rm --name $v --hostname $v -e 'DB_NAME=db' -e 'DB_USER=user1' -e 'DB_PASS=123' sameersbn/mysql
# v=A0502E02 ; docker run -it --rm --name $v --hostname $v -e 'DB_NAME=db' -e 'DB_USER=user1' -e 'DB_PASS=123' sameersbn/mysql
Installing database...
Starting MySQL server...
Waiting for database server to accept connections.
Creating debian-sys-maint user...
Creating database "db"...
Granting access to database "db" for user "user1"...
2019-01-06T21:41:37.379842Z mysqld_safe Logging to syslog.
2019-01-06T21:41:37.428114Z mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
# docker exec -it A0502E02 mysql -u user1 --password=123
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.22-0ubuntu18.04.1 (Ubuntu)
Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| db |
+--------------------+
2 rows in set (0.00 sec)
mysql>
Variáveis dentro de arquivos
# v=A0502E03 ; docker run -it --rm --name $v --hostname $v --env-file=/home/josemalcher/exemplo9/variaveisDB sameersbn/mysql
Installing database...
Starting MySQL server...
Waiting for database server to accept connections.
Creating debian-sys-maint user...
Creating database "db_arquivovar"...
Granting access to database "db_arquivovar" for user "user2"...
2019-01-06T21:51:46.178424Z mysqld_safe Logging to syslog.
2019-01-06T21:51:46.220244Z mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
# docker exec -it A0502E03 mysql -u user2 --password=12356
mysql: [Warning] Using a password on the command line interface can be insecure.
ERROR 1045 (28000): Access denied for user 'user2'@'localhost' (using password: YES)
# docker exec -it A0502E03 mysql -u user2 --password=123456
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.22-0ubuntu18.04.1 (Ubuntu)
Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| db_arquivovar |
+--------------------+
2 rows in set (0.00 sec)
# docker run -dt --name aulaEx1-a ubuntu /bin/bash
# docker run -dt --name aulaEx1-b -p 8080:80 ubuntu /bin/bash
aulaEx1-b,ubuntu
Up 59 seconds, PORTA: 0.0.0.0:8080->80/tcp
aulaEx1-a,ubuntu
Up About a minute, PORTA:
# docker port aulaEx1-b
80/tcp -> 0.0.0.0:8080
Mapeamento mais de uma porta
# docker run -dt --name aulaEx3-a -p 23:23 -p 81-85:81-85 ubuntu /bin/bash
aulaEx3-a,ubuntu
Up 15 seconds, PORTA: 0.0.0.0:23->23/tcp, 0.0.0.0:81-85->81-85/tcp
Determinar ip de restrição
# docker run -dt --name aulaEx3-b -p 192.168.0.102:24:24 ubuntu /bin/bash
aulaEx3-b,ubuntu
Up 25 seconds, PORTA: 192.168.0.102:24->24/tcp
Redirecionar para porta udp
# docker run -dt --name aulaEx3-c -p 54:54/udp ubuntu /bin/bash
aulaEx3-c,ubuntu
Up 21 seconds, PORTA: 0.0.0.0:54->54/udp
Exemplo de muitas portas
# docker run -dt --name aulaEx5-d -p 54-55:54-55/udp -p 192.168.0.102:100:101/tcp -p 86-89:96-99 ubuntu /bin/bash
aulaEx5-d,ubuntu
Up 19 seconds, PORTA: 0.0.0.0:54-55->54-55/udp, 0.0.0.0:86->96/tcp, 0.0.0.0:87->97/tcp, 0.0.0.0:88->98/tcp, 0.0.0.0:89->99/tcp, 192.168.0.102:100->1
01/tcp
# docker run -dt --name Aula17.a -P nginx
Aula17.a,nginx
Up 18 seconds, PORTA: 0.0.0.0:32768->80/tcp
# docker run -it --rm --name Aula18Ex1
-v /home/josemalcher/Documentos/workspace-Docker/udemy-Docker-Compreendendo-e-utilizando/18-Trabalhando-com-volumes-Parte-1:/tmp/Ex01:Z ubuntu /bin/bash
- ":Z" Parâmetro aidiconado: http://www.projectatomic.io/blog/2015/06/using-volumes-with-docker-can-cause-problems-with-selinux/
- ":ro" Ready only - Somente para leitura
# docker run -it --rm --name Aula18Ex3
-v /home/josemalcher/Documentos/workspace-Docker/udemy-Docker-Compreendendo-e-utilizando/18-Trabalhando-com-volumes-Parte-1/Exemplo1:/home/Exemplo1:Z
-v /home/josemalcher/Documentos/workspace-Docker/udemy-Docker-Compreendendo-e-utilizando/18-Trabalhando-com-volumes-Parte-1/Exemplo2:/home/Exemplo2:Z ubuntu /bin/bash
Prática com Mysql
# docker run -i --rm --name Aula18Ex4 -v /home/josemalcher/Documentos/workspace-Docker/udemy-Docker-Compreendendo-e-utilizando/18-Trabalhando-com-volumes-Parte-1/ArquivosBD/:/var/lib/mysql:Z -e 'DB_NAME=db1' -e 'DB_USER=user1' -e 'DB_PASS=123' sameersbn/mysqlInstalling database...
Starting MySQL server...
Waiting for database server to accept connections.
Creating debian-sys-maint user...
Creating database "db1"...
Granting access to database "db1" for user "user1"...
2019-05-03T00:40:55.157354Z mysqld_safe Logging to syslog.
2019-05-03T00:40:55.174405Z mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
Aula18Ex4,sameersbn/mysql
Up 31 seconds, PORTA: 3306/tcp
[ArquivosBD] # ls
auto.cnf db1 ib_buffer_pool ibdata1 ib_logfile0 ib_logfile1 ibtmp1 mysql performance_schema sys
# docker exec -it Aula18Ex4 mysql -u user1 --password=123
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.24-0ubuntu0.18.04.1 (Ubuntu)
Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| db1 |
+--------------------+
2 rows in set (0.00 sec)
mysql>
Exemplo 2 - Adicionando outro Banco
# docker run -i --rm --name Aula18Ex5 -v /home/josemalcher/Documentos/workspace-Docker/udemy-Docker-Compreendendo-e-utilizando/18-Trabalhando-com-volumes-Parte-1/ArquivosBD/:/var/lib/mysql:Z -e 'DB_NAME=db2' -e 'DB_USER=user1' -e 'DB_PASS=123' sameersbn/mysqlCreating database "db2"...
Granting access to database "db2" for user "user1"...
2019-05-03T00:47:03.870862Z mysqld_safe Logging to syslog.
2019-05-03T00:47:03.895562Z mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
[ArquivosBD] # ls
auto.cnf db1 db2 ib_buffer_pool ibdata1 ib_logfile0 ib_logfile1 ibtmp1 mysql performance_schema sys
# docker exec -it Aula18Ex5 mysql -u user1 --password=123
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.24-0ubuntu0.18.04.1 (Ubuntu)
Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> show databases
-> ;
+--------------------+
| Database |
+--------------------+
| information_schema |
| db1 |
| db2 |
+--------------------+
3 rows in set (0.00 sec)
mysql>
Verificação...
# dockerun -i --rm --name Aula18Ex4 -v /home/josemalcher/Documentos/workspace-Docker/udemy-Docker-Compreendendo-e-utilizando/18-Trabalhando-com-volumes-Parte-1/ArquivosBD/:/var/lib/mysql:Z -e 'DB_NAME=db1' -e 'DB_USER=user1' -e 'DB_PASS=123' sameersbn/mysql
Creating database "db1"...
Granting access to database "db1" for user "user1"...
2019-05-03T00:52:16.713861Z mysqld_safe Logging to syslog.
2019-05-03T00:52:16.732779Z mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
# docker exec -it Aula18Ex4 mysql -u user1 --password=123
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.24-0ubuntu0.18.04.1 (Ubuntu)
Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| db1 |
| db2 |
+--------------------+
3 rows in set (0.00 sec)
mysql>
[ArquivosBD] # ls
auto.cnf db1 db2 ib_buffer_pool ibdata1 ib_logfile0 ib_logfile1 ibtmp1 mysql performance_schema sys
# docker run -i --rm --name Aula19Ex1 -p 8080:80 -v /home/josemalcher/Documentos/workspace-Docker/udemy-Docker-Compreendendo-e-utilizando/19-Trabalhando-com-volumes-Parte-2/index.html:/usr/share/nginx/html/index.html:Z nginx
Aula19Ex1,nginx
Up 38 seconds, PORTA: 0.0.0.0:8080->80/tcp
Espelhando os arquivos para outra container
Adicionado "--privileged=true" para poder ter permissão aos arquivos!
# docker run -dt --privileged=true --name Aula19Ex2 -p 8180:80 --volumes-from=Aula19Ex1 nginx
É necessário instalar o ping:
# docker exec -it Aula9-d /bin/bash
# apt-get update && apt-get install -y iputils-ping
# docker run -dt --name Aula9-a ubuntu /bin/bash
# docker run -dt --name Aula9-b --link Aula9-a ubuntu /bin/bash
# docker run -dt --name Aula9-c ubuntu /bin/bash
# docker exec Aula9-b ping Aula9-c -c 3
ping: Aula9-c: Temporary failure in name resolution
# docker exec Aula9-b ping Aula9-a -c 3
PING Aula9-a (172.17.0.2) 56(84) bytes of data.
64 bytes from Aula9-a (172.17.0.2): icmp_seq=1 ttl=64 time=0.097 ms
64 bytes from Aula9-a (172.17.0.2): icmp_seq=2 ttl=64 time=0.080 ms
64 bytes from Aula9-a (172.17.0.2): icmp_seq=3 ttl=64 time=0.076 ms
--- Aula9-a ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2030ms
rtt min/avg/max/mdev = 0.076/0.084/0.097/0.011 ms
Exemplo 2
# docker run -dt --name Aula9-d --link Aula9-a:l1 --link Aula9-b:l2 --link Aula9-c ubuntu /bin/bash
# docker exec Aula9-d ping l1 -c 3
PING l1 (172.17.0.2) 56(84) bytes of data.
64 bytes from l1 (172.17.0.2): icmp_seq=1 ttl=64 time=0.083 ms
64 bytes from l1 (172.17.0.2): icmp_seq=2 ttl=64 time=0.139 ms
64 bytes from l1 (172.17.0.2): icmp_seq=3 ttl=64 time=0.109 ms
--- l1 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2076ms
rtt min/avg/max/mdev = 0.083/0.110/0.139/0.024 ms
# docker exec Aula9-d ping l1 -c 3
PING l1 (172.17.0.2) 56(84) bytes of data.
64 bytes from l1 (172.17.0.2): icmp_seq=1 ttl=64 time=0.083 ms
64 bytes from l1 (172.17.0.2): icmp_seq=2 ttl=64 time=0.139 ms
64 bytes from l1 (172.17.0.2): icmp_seq=3 ttl=64 time=0.109 ms
--- l1 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2076ms
rtt min/avg/max/mdev = 0.083/0.110/0.139/0.024 ms
# docker exec Aula9-d ping Aula9-a -c 3
PING l1 (172.17.0.2) 56(84) bytes of data.
64 bytes from l1 (172.17.0.2): icmp_seq=1 ttl=64 time=0.056 ms
64 bytes from l1 (172.17.0.2): icmp_seq=2 ttl=64 time=0.319 ms
64 bytes from l1 (172.17.0.2): icmp_seq=3 ttl=64 time=0.135 ms
--- l1 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2052ms
rtt min/avg/max/mdev = 0.056/0.170/0.319/0.110 ms
# docker exec Aula9-d ping l2 -c 3
PING l2 (172.17.0.3) 56(84) bytes of data.
64 bytes from l2 (172.17.0.3): icmp_seq=1 ttl=64 time=0.078 ms
64 bytes from l2 (172.17.0.3): icmp_seq=2 ttl=64 time=0.115 ms
64 bytes from l2 (172.17.0.3): icmp_seq=3 ttl=64 time=0.121 ms
--- l2 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2056ms
rtt min/avg/max/mdev = 0.078/0.104/0.121/0.022 ms
# docker exec Aula9-d ping l3 -c 3
ping: l3: Name or service not known
# docker exec Aula9-d ping Aula9-d -c 3
ping: Aula9-d: Name or service not known
# docker exec Aula9-d ping Aula9-c -c 3
PING Aula9-c (172.17.0.4) 56(84) bytes of data.
64 bytes from Aula9-c (172.17.0.4): icmp_seq=1 ttl=64 time=0.105 ms
64 bytes from Aula9-c (172.17.0.4): icmp_seq=2 ttl=64 time=0.100 ms
64 bytes from Aula9-c (172.17.0.4): icmp_seq=3 ttl=64 time=0.129 ms
--- Aula9-c ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2063ms
rtt min/avg/max/mdev = 0.100/0.111/0.129/0.015 ms
# docker run -dt --name Aula21-ex2-db
-v /home/josemalcher/Documentos/workspace-Docker/udemy-Docker-Compreendendo-e-utilizando/21-Linkando-containers-Parte-2/:/var/lib/mysql:Z
-e 'DB_NAME=redmine_base'
-e 'DB_USER=redmine_usuario'
-e 'DB_PASS=redmine_senha'
sameersbn/mysql:latest
c31b360dec1ab312be29bb00a339c72417ca6fb12cad33231945561b413c4e62
# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
c31b360dec1a sameersbn/mysql:latest "/sbin/entrypoint...." 3 minutes ago Up 3 minutes 3306/tcp Aula21-ex2-db
# docker run -i --rm --name Aula21-ex2-app -p 8080:80
-v /home/josemalcher/Documentos/workspace-Docker/udemy-Docker-Compreendendo-e-utilizando/21-Linkando-containers-Parte-2-app/:/home/redmine/data:Z
-e 'DB_TYPE=mysql'
-e 'DB_HOST=redminedb'
-e 'DB_NAME=redmine_base'
-e 'DB_USER=redmine_usuario'
-e 'DB_PASS=redmine_senha'
--link Aula21-ex2-db:redminedb
sameersbn/redmine:3.1.1-3
Waiting for database server to accept connections
2019-05-10 22:13:41,465 CRIT Supervisor running as root (no user in config file)
2019-05-10 22:13:41,465 WARN Included extra file "/etc/supervisor/conf.d/cron.conf" during parsing
2019-05-10 22:13:41,465 WARN Included extra file "/etc/supervisor/conf.d/unicorn.conf" during parsing
2019-05-10 22:13:41,466 WARN Included extra file "/etc/supervisor/conf.d/nginx.conf" during parsing
2019-05-10 22:13:41,513 INFO RPC interface 'supervisor' initialized
2019-05-10 22:13:41,513 CRIT Server 'unix_http_server' running without any HTTP authentication checking
2019-05-10 22:13:41,514 INFO supervisord started with pid 1
2019-05-10 22:13:42,516 INFO spawned: 'unicorn' with pid 91
2019-05-10 22:13:42,517 INFO spawned: 'cron' with pid 92
2019-05-10 22:13:42,520 INFO spawned: 'nginx' with pid 93
2019-05-10 22:13:44,240 INFO success: unicorn entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2019-05-10 22:13:44,240 INFO success: cron entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2019-05-10 22:13:44,240 INFO success: nginx entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
# docker run -dt --name Aula511-ex1
--hostname Aula511-ex1
-p 8080:80 -p 81:91
-v /home/josemalcher/Documentos/workspace-Docker/udemy-Docker-Compreendendo-e-utilizando/511-inspecionando-containers-1/:/tmp:Z
ubuntu /bin/bash
# docker run -dt --name Aula511-ex1 --hostname Aula511-ex1 -p 8080:80 -p 81:91 -v /home/josemalcher/Documentos/workspace-Docker/udemy-Docker-Compreendendo-e-utilizando/511-inspecionando-containers-1/:/tmp:Z ubuntu /bin/bash
# docker inspect Aula511-ex1
[
{
"Id": "a5177bed824b47760bba705da3ff1a570518e82ea7fd6a1e66",
"Created": "2019-05-11T13:03:46.3282937Z",
"Path": "/bin/bash",
"Args": [],
"State": {
"Status": "running",
"Running": true,
"Paused": false,
"Restarting": false,
"OOMKilled": false,
"Dead": false,
"Pid": 7451,
"ExitCode": 0,
"Error": "",
"StartedAt": "2019-05-11T13:03:47.90327774Z",
"FinishedAt": "0001-01-01T00:00:00Z"
},
"Image": "sha256:d131e0fa2585a7efbfb187f70d648aa50e251d9d3b7031edf",
"ResolvConfPath": "/var/lib/docker/containers/a5177bed824b47760bba705da3ff1a57082ea7fd6a1e66a80975cc1cfa09/resolv.conf",
"HostnamePath": "/var/lib/docker/containers/a5177bed824b47760bba705da3ff1a58e82ea7fd6a1e66a80975cc1cfa09/hostname",
"HostsPath": "/var/lib/docker/containers/a5177bed824b47760bba705da3ff1a18e82ea7fd6a1e66a80975cc1cfa09/hosts",
"LogPath": "",
"Name": "/Aula511-ex1",
#(....muitas outras infos)
# docker inspect --format '{{.Id}}' Aula511-ex1
a5177bed824b47760bba705da3ff1a570518e82ea7fd6a1e66a80975cc1cfa09
# docker inspect --format '{{.NetworkSettings}}' Aula511-ex1
{{ 65b499414d26f9f70ea8dafa714754da8a994e6219cda58ed31d1278fab48aa4 false 0 map[80/tcp:[{0.0.0.0 8080}] 91/tcp:[{0.0.0.0 81}]] /var/run/docker/netns/65b499414d26 [] []} {e2f79b1d0451f9159c51c83898c20cd5f6147895c7d6fa75d2ca7783df610e92 172.17.0.1 0 172.17.0.2 16 02:42:ac:11:00:02} map[bridge:0xc00012a000]}
# docker inspect --format '{{.NetworkSettings.IPAddress}}' Aula511-ex1
172.17.0.2
# docker inspect --format 'Inf: {{.Name}} | {{.Config.Hostname}} | {{.NetworkSettings.IPAddress}}' Aula511-ex1
Inf: /Aula511-ex1 | Aula511-ex1 | 172.17.0.2
Diff
# docker exec Aula511-ex1 touch /usr/src/arquivo1
# docker exec Aula511-ex1 touch /usr/src/arquivo2
# docker diff Aula511-ex1
C /run
D /run/secrets
C /usr/src
A /usr/src/arquivo1
A /usr/src/arquivo2
# docker exec -it Aula511-ex1 bash
root@Aula511-ex1:/# touch /tmp/arquiv3
root@Aula511-ex1:/# echo "alter file">>/usr/src/arquivo2
root@Aula511-ex1:/# exit
exit
# docker diff Aula511-ex1
C /root
A /root/.bash_history
C /run
D /run/secrets
C /usr/src
A /usr/src/arquivo1
A /usr/src/arquivo2
Logs
# docker run -dt --name Aula511-ex2 =p 8080:80 -p 443:443 -p 3306:3306 dell/wordpress
# docker logs Aula511-ex2
# docker run -dt --name Aula512 ubuntu /bin/bash
6f9257703d8f4a30ec6a882a2c60255fa1f6313c6288b20519239341f1c37038
# docker exec Aula512 touch /usr/src/arquivo-bkp-teste_1
# docker diff Aula512
C /run
D /run/secrets
C /usr/src
A /usr/src/arquivo-bkp-teste_1
# docker export -o /home/josemalcher/Documentos/workspace-Docker/udemy-Docker-Compreendendo-e-utilizando/512-exportando-importando/container-Aula512.tar Aula512
# ls 512-exportando-importando/
container-Aula512.tar
# cat 512-exportando-importando/container-Aula512.tar | docker import - aula512:v1
sha256:01d84de66f72fcd34468564fe25b6a28bd779b324359fbd45658151a3d308812
# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
aula512 v1 01d84de66f72 6 seconds ago 81.5 MB
docker.io/ubuntu 14.04 65613486b3ef 2 weeks ago 188 MB
docker.io/ubuntu latest d131e0fa2585 2 weeks ago 102 MB
docker.io/nginx latest 27a188018e18 3 weeks ago 109 MB
registry.access.redhat.com/rhel7 latest 5044f6040ea5 3 weeks ago 203 MB
docker.io/sameersbn/redmine latest 1239aa7aa1ea 4 weeks ago 816 MB
quay.io/sameersbn/mysql latest 40df973b8e91 3 months ago 289 MB
docker.io/hello-world latest fce289e99eb9 4 months ago 1.84 kB
docker.io/andyshinn/dnsmasq latest 831c17422076 13 months ago 4.88 MB
docker.io/sameersbn/redmine 3.1.1-3 9655f66d3116 3 years ago 612 MB
# docker run -dt --name Aula512-v1 aula512:v1 /bin/bash
73638ab1d24bfd6e863153011d0fe03d70cdedeeb4344469584cdc310dcdb85c
# docker exec Aula512-v1 ls /usr/src
arquivo-bkp-teste_1
# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
aula512 v1 01d84de66f72 18 minutes ago 81.5 MB
docker.io/ubuntu 14.04 65613486b3ef 2 weeks ago 188 MB
docker.io/ubuntu latest d131e0fa2585 2 weeks ago 102 MB
docker.io/nginx latest 27a188018e18 3 weeks ago 109 MB
registry.access.redhat.com/rhel7 latest 5044f6040ea5 3 weeks ago 203 MB
docker.io/sameersbn/redmine latest 1239aa7aa1ea 4 weeks ago 816 MB
quay.io/sameersbn/mysql latest 40df973b8e91 3 months ago 289 MB
docker.io/hello-world latest fce289e99eb9 4 months ago 1.84 kB
docker.io/andyshinn/dnsmasq latest 831c17422076 13 months ago 4.88 MB
docker.io/sameersbn/redmine 3.1.1-3 9655f66d3116 3 years ago 612 MB
# docker pull ubuntu:10.04
# docker pull centos
# docker pull nginx
# docker search wordpress
Base de Imagens
# docker info
Containers: 3
Running: 0
Paused: 0
Stopped: 3
Images: 10
Server Version: 1.13.1
Storage Driver: overlay2
Backing Filesystem: extfs
Supports d_type: true
Native Overlay Diff: true
Logging Driver: journald
Cgroup Driver: systemd
Plugins:
Volume: local
Network: bridge host macvlan null overlay
Authorization: rhel-push-plugin
Swarm: inactive
(...)
# docker login
Login with your Docker ID to push and pull images from Docker Hub. If you don't have a Docker ID, head over to https://hub.docker.com to create one.
Username: josemalcher
Password:
#docker logout
# docker login -u josemalcher -e contato@josemalche.net
Flag --email has been deprecated, will be removed in 1.14.
Password:
# docker run -dt --name aula63 ubuntu /bin/bash
4104e4d78fc6952b7f857b8d5e9ae55b90dc315e10e399371e984aa7191bf550
# docker exec aula63 touch /usr/src/imagem-alterada
# docker diff aula63
C /run
D /run/secrets
C /usr/src
A /usr/src/imagem-alterada
# docker commit -m "Versionando imagem - exemplo 1" aula63 aula63:v1
# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
aula63 v1 6a96d5d9fd50 15 seconds ago 102 MB
aula512 v1 01d84de66f72 3 hours ago 81.5 MB
docker.io/ubuntu 14.04 65613486b3ef 2 weeks ago 188 MB
docker.io/ubuntu latest d131e0fa2585 2 weeks ago 102 MB
docker.io/nginx latest 27a188018e18 3 weeks ago 109 MB
registry.access.redhat.com/rhel7 latest 5044f6040ea5 3 weeks ago 203 MB
docker.io/sameersbn/redmine latest 1239aa7aa1ea 4 weeks ago 816 MB
quay.io/sameersbn/mysql latest 40df973b8e91 3 months ago 289 MB
docker.io/hello-world latest fce289e99eb9 4 months ago 1.84 kB
docker.io/andyshinn/dnsmasq latest 831c17422076 13 months ago 4.88 MB
docker.io/sameersbn/redmine 3.1.1-3 9655f66d3116 3 years ago 612 MB
# docker push aula63:v1
Error response from daemon: You cannot push a "root" repository. Please rename your repository to docker.io/<user>/<repo> (ex: docker.io/<user>/aula63)
# docker commit -m "Versionando imagem - exemplo 2" aula63 josemalcher/aula63:v2
# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
josemalcher/aula63 v2 367ead2fa1a1 7 seconds ago 102 MB
aula63 v1 6a96d5d9fd50 3 minutes ago 102 MB
aula512 v1 01d84de66f72 3 hours ago 81.5 MB
docker.io/ubuntu 14.04 65613486b3ef 2 weeks ago 188 MB
docker.io/ubuntu latest d131e0fa2585 2 weeks ago 102 MB
docker.io/nginx latest 27a188018e18 3 weeks ago 109 MB
registry.access.redhat.com/rhel7 latest 5044f6040ea5 3 weeks ago 203 MB
docker.io/sameersbn/redmine latest 1239aa7aa1ea 4 weeks ago 816 MB
quay.io/sameersbn/mysql latest 40df973b8e91 3 months ago 289 MB
docker.io/hello-world latest fce289e99eb9 4 months ago 1.84 kB
docker.io/andyshinn/dnsmasq latest 831c17422076 13 months ago 4.88 MB
docker.io/sameersbn/redmine 3.1.1-3 9655f66d3116 3 years ago 612 MB
# docker push josemalcher/aula63
The push refers to a repository [docker.io/josemalcher/aula63]
# docker pull josemalcher/aula63:v2
# docker tag josemalcher/aula63:v2 josemalcher/aula63:latest
# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
josemalcher/aula63 latest 367ead2fa1a1 4 minutes ago 102 MB
josemalcher/aula63 v2 367ead2fa1a1 4 minutes ago 102 MB
aula63 v1 6a96d5d9fd50 7 minutes ago 102 MB
aula512 v1 01d84de66f72 3 hours ago 81.5 MB
docker.io/ubuntu 14.04 65613486b3ef 2 weeks ago 188 MB
docker.io/ubuntu latest d131e0fa2585 2 weeks ago 102 MB
docker.io/nginx latest 27a188018e18 3 weeks ago 109 MB
registry.access.redhat.com/rhel7 latest 5044f6040ea5 3 weeks ago 203 MB
docker.io/sameersbn/redmine latest 1239aa7aa1ea 4 weeks ago 816 MB
quay.io/sameersbn/mysql latest 40df973b8e91 3 months ago 289 MB
docker.io/hello-world latest fce289e99eb9 4 months ago 1.84 kB
docker.io/andyshinn/dnsmasq latest 831c17422076 13 months ago 4.88 MB
docker.io/sameersbn/redmine 3.1.1-3 9655f66d3116 3 years ago 612 MB
# docker push josemalcher/aula63
# docker save -o 64-exportando-importando/aula64-ex1-latest.tar josemalcher/aula63:latest
$ ls -lha
total 100M
drwxrwxr-x. 2 josemalcher josemalcher 4,0K mai 11 21:38 .
drwxrwxr-x. 14 josemalcher josemalcher 4,0K mai 11 21:35 ..
-rw-------. 1 root root 100M mai 11 21:38 aula64-ex1-latest.tar
# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
josemalcher/aula63 latest 367ead2fa1a1 16 minutes ago 102 MB
josemalcher/aula63 v2 367ead2fa1a1 16 minutes ago 102 MB
aula63 v1 6a96d5d9fd50 19 minutes ago 102 MB
aula512 v1 01d84de66f72 3 hours ago 81.5 MB
docker.io/ubuntu 14.04 65613486b3ef 2 weeks ago 188 MB
docker.io/ubuntu latest d131e0fa2585 2 weeks ago 102 MB
docker.io/nginx latest 27a188018e18 3 weeks ago 109 MB
registry.access.redhat.com/rhel7 latest 5044f6040ea5 3 weeks ago 203 MB
docker.io/sameersbn/redmine latest 1239aa7aa1ea 4 weeks ago 816 MB
quay.io/sameersbn/mysql latest 40df973b8e91 3 months ago 289 MB
docker.io/hello-world latest fce289e99eb9 4 months ago 1.84 kB
docker.io/andyshinn/dnsmasq latest 831c17422076 13 months ago 4.88 MB
docker.io/sameersbn/redmine 3.1.1-3 9655f66d3116 3 years ago 612 MB
# docker rmi -f josemalcher/aula63:latest josemalcher/aula63:v2 aula63:v1
Untagged: josemalcher/aula63:latest
Untagged: josemalcher/aula63:v2
Deleted: sha256:367ead2fa1a1ab3e593d3b1883189a591f0a72c345ae177e678ff80444e452f7
Untagged: aula63:v1
Deleted: sha256:6a96d5d9fd50382cf103ab9b49011e953b3f37ff3c7f2782e5da3d97e11096ca
Deleted: sha256:3d4be9bc1e3787c089c5b1c29fa785d9424a3f29d0e67a642c75763fb278b0de
# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
aula512 v1 01d84de66f72 3 hours ago 81.5 MB
docker.io/ubuntu 14.04 65613486b3ef 2 weeks ago 188 MB
docker.io/ubuntu latest d131e0fa2585 2 weeks ago 102 MB
docker.io/nginx latest 27a188018e18 3 weeks ago 109 MB
registry.access.redhat.com/rhel7 latest 5044f6040ea5 3 weeks ago 203 MB
docker.io/sameersbn/redmine latest 1239aa7aa1ea 4 weeks ago 816 MB
quay.io/sameersbn/mysql latest 40df973b8e91 3 months ago 289 MB
docker.io/hello-world latest fce289e99eb9 4 months ago 1.84 kB
docker.io/andyshinn/dnsmasq latest 831c17422076 13 months ago 4.88 MB
docker.io/sameersbn/redmine 3.1.1-3 9655f66d3116 3 years ago 612 MB
# docker load < /home/josemalcher/Documentos/workspace-Docker/udemy-Docker-Compreendendo-e-utilizando/64-exportando-importando/aula64-ex1-latest.tar
6d4cdb9eb527: Loading layer [==================================================>] 4.096 kB/4.096 kB
Loaded image: josemalcher/aula63:latest
# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
josemalcher/aula63 latest 367ead2fa1a1 20 minutes ago 102 MB
aula512 v1 01d84de66f72 3 hours ago 81.5 MB
docker.io/ubuntu 14.04 65613486b3ef 2 weeks ago 188 MB
docker.io/ubuntu latest d131e0fa2585 2 weeks ago 102 MB
docker.io/nginx latest 27a188018e18 3 weeks ago 109 MB
registry.access.redhat.com/rhel7 latest 5044f6040ea5 3 weeks ago 203 MB
docker.io/sameersbn/redmine latest 1239aa7aa1ea 4 weeks ago 816 MB
quay.io/sameersbn/mysql latest 40df973b8e91 3 months ago 289 MB
docker.io/hello-world latest fce289e99eb9 4 months ago 1.84 kB
docker.io/andyshinn/dnsmasq latest 831c17422076 13 months ago 4.88 MB
docker.io/sameersbn/redmine 3.1.1-3 9655f66d3116 3 years ago 612 MB
FROM ubuntu
MAINTAINER José Malcher Jr. <contato@josemalcher.net>
# Labe's
LABEL "net.josemalcher.vendor"="Udemy Course"
LABEL version="1.0"
LABEL description="Curso de Docker: \
Exemplo básico de Dockerfile."
# Variáveis
ENV DIR_BASE=/usr/src
ENV DIR_TESTE1=$DIR_BASE/teste1
ENV USER=josemalcher
ENV PASS=123456
# adiciona Arquivos
ADD arquivos/exemplos/ $DIR_BASE/exemplos
ADD arquivos/apt_defaults.pgks /tmp/apt_defaults.pgks
# Executa processos
ENV DEBIAN_FRONTEND noninteractive
RUN apt-get update
RUN apt-get -y upgrade
RUN apt-get -y install autoconf build-essential gcc make
RUN apt-get install -y -q $(cat /tmp/apt_defaults.pgks)
RUN locale-gen pt_BR.UTF-8
RUN update-locale LANG=pt_BR.UTF-8
#local de trabalho
WORKDIR $DIR_BASE
RUN touch exemplo_04.txt
WORKDIR $DIR_BASE/exemplos
RUN touch exemplo_05.txt
#################################################
# POSTS
EXPOSE 80
EXPOSE 81
EXPOSE 82 83
# VOLUMES
VOLUME ["/usr/src","/home"]
##################################################
# CMD
CMD ["/bin/bash"]
# ls
arquivos Dockerfile
# docker build -t josemalcher/ubuntu-dkinf-base:latest .
Sending build context to Docker daemon 6.656 kB
Step 1/27 : FROM ubuntu
---> d131e0fa2585
Step 2/27 : MAINTAINER José Malcher Jr. <contato@josemalcher.net>
---> Running in c7b15e0eec05
---> f2ac4cc6d1bb
Removing intermediate container c7b15e0eec05
Step 3/27 : LABEL "net.josemalcher.vendor" "Udemy Course"
---> Running in c3c449458d29
---> d1083398c309
Removing intermediate container c3c449458d29
Step 4/27 : LABEL version "1.0"
---> Running in 6518b4356ff7
---> a66a60651dd0
Removing intermediate container 6518b4356ff7
(...)
# docker run -dt --name Aula71-doking-ex1 josemalcher/ubuntu-dokinf-base
b3cd23b15fa5da3b4c696f971693e54bdee882bf32e7f2494a61210aaf75fd5b
# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
b3cd23b15fa5 josemalcher/ubuntu-dokinf-base "/bin/bash" 4 seconds ago Up 3 seconds 80-83/tcp Aula71-doking-ex1
Aula71-doking-ex1,josemalcher/ubuntu-dokinf-base
Up 2 minutes, PORTA: 80-83/tcp
# docker build -t josemalcher/ubuntu-dokinf-base-ssh .
Sending build context to Docker daemon 2.56 kB
Step 1/18 : FROM josemalcher/ubuntu-dokinf-base
---> a68529e5ea0f
Step 2/18 : MAINTAINER José Malcher Jr. <contato@josemalcher.net>
---> Running in ce96a5dcf923
---> 350239890c33
Removing intermediate container ce96a5dcf923
Step 3/18 : LABEL "com.example.vendor" "Udemy Course"
---> Running in 381d08bad920
---> 4a51039beefc
Removing intermediate container 381d08bad920
Step 4/18 : LABEL version "1.5"
---> Running in 4a9725cb61e1
---> 816d6b1c7704
# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
josemalcher/ubuntu-dokinf-base-ssh latest 96eba117c1e1 3 minutes ago 522 MB
josemalcher/ubuntu-dokinf-base latest a68529e5ea0f 40 minutes ago 443 MB
josemalcher/aula63 latest 367ead2fa1a1 41 hours ago 102 MB
aula512 v1 01d84de66f72 45 hours ago 81.5 MB
docker.io/ubuntu 14.04 65613486b3ef 2 weeks ago 188 MB
docker.io/ubuntu latest d131e0fa2585 2 weeks ago 102 MB
docker.io/nginx latest 27a188018e18 3 weeks ago 109 MB
registry.access.redhat.com/rhel7 latest 5044f6040ea5 3 weeks ago 203 MB
docker.io/sameersbn/redmine latest 1239aa7aa1ea 5 weeks ago 816 MB
quay.io/sameersbn/mysql latest 40df973b8e91 4 months ago 289 MB
docker.io/hello-world latest fce289e99eb9 4 months ago 1.84 kB
docker.io/andyshinn/dnsmasq latest 831c17422076 13 months ago 4.88 MB
docker.io/sameersbn/redmine 3.1.1-3 9655f66d3116 3 years ago 612 MB
# docker run -dt --name Aula730-ssh josemalcher/ubuntu-dokinf-base-ssh
11cdc59882815278687cf787e3f9d44ba09ae53f3a4e7f41f173a58b59faca1a
Aula730-ssh,josemalcher/ubuntu-dokinf-base-ssh
Up 7 minutes, PORTA: 22/tcp, 80-83/tcp
# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
11cdc5988281 josemalcher/ubuntu-dokinf-base-ssh "/usr/sbin/sshd -D" 4 seconds ago Up 4 seconds 22/tcp, 80-83/tcp Aula730-ssh
b3cd23b15fa5 josemalcher/ubuntu-dokinf-base "/bin/bash" 29 minutes ago Up 29 minutes 80-83/tcp Aula71-doking-ex1
# IP_EX02=$(docker inspect --format '{{.NetworkSettings.IPAddress}}' Aula730-ssh)
# ssh $IP_EX02
The authenticity of host '172.17.0.3 (172.17.0.3)' can't be established.
Outro Exemplo
# docker build -t josemalcher/ubuntu-dokinf-base-ssh:1.2 .
Sending build context to Docker daemon 3.072 kB
Step 1/5 : FROM josemalcher/ubuntu-dokinf-base-ssh
---> 96eba117c1e1
Step 2/5 : MAINTAINER José Malcher Jr.<contato@josemalcher.net>
---> Running in 886b48b92bea
---> 607284166a63
Removing intermediate container 886b48b92bea
Step 3/5 : ADD issue.exemplo.net /etc/issue.exemplo.net
(...)
# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
josemalcher/ubuntu-dokinf-base-ssh 1.2 12e7ebd9d75e 47 seconds ago 522 MB
josemalcher/ubuntu-dokinf-base-ssh latest 96eba117c1e1 21 minutes ago 522 MB
josemalcher/ubuntu-dokinf-base latest a68529e5ea0f 58 minutes ago 443 MB
josemalcher/aula63 latest 367ead2fa1a1 41 hours ago 102 MB
aula512 v1 01d84de66f72 45 hours ago 81.5 MB
docker.io/ubuntu 14.04 65613486b3ef 2 weeks ago 188 MB
docker.io/ubuntu latest d131e0fa2585 2 weeks ago 102 MB
docker.io/nginx latest 27a188018e18 3 weeks ago 109 MB
registry.access.redhat.com/rhel7 latest 5044f6040ea5 3 weeks ago 203 MB
docker.io/sameersbn/redmine latest 1239aa7aa1ea 5 weeks ago 816 MB
quay.io/sameersbn/mysql latest 40df973b8e91 4 months ago 289 MB
docker.io/hello-world latest fce289e99eb9 4 months ago 1.84 kB
docker.io/andyshinn/dnsmasq latest 831c17422076 13 months ago 4.88 MB
docker.io/sameersbn/redmine 3.1.1-3 9655f66d3116 3 years ago 612 MB
# docker run -dt --name Aula730-ssh-1-2 josemalcher/ubuntu-dokinf-base-ssh:1.2
Aula730-ssh-1-2,josemalcher/ubuntu-dokinf-base-ssh:1.2
Up 3 seconds, PORTA: 22/tcp, 80-83/tcp
# docker run -dt --name Aula730-ssh-1-2 josemalcher/ubuntu-dokinf-base-ssh:1.2
# IP_EX03=$(docker inspect --format '{{.NetworkSettings.IPAddress}}' Aula730-ssh-1-2)
# ssh $IP_EX03
NULL
NULL
FINISH