Basic Docker Container Management issues, docker-compose & Portainer as GUI.

1. DOCKER
CONTAINER
MANAGEMENT
Karol Kreft

2. 1.
BASICS

3. “Containers are an abstraction at the app layer that
packages code and dependencies together. Multiple
containers can run on the same machine and share the OS
kernel with other containers, each running as isolated
processes in user space.“
docker containers

4. “Containers are an abstraction at the app layer that
packages code and dependencies together. Multiple
containers can run on the same machine and share the OS
kernel with other containers, each running as isolated
processes in user space.“
docker containers
“To use a programming metaphor, if an image is a class,
then a container is an instance of a class—a runtime
object.”

5. DOCKER
COMPOSE
PHP-FPM Postgreswww

6. DOCKER
COMPOSE
PHP-FPM Postgreswww
Dockerfileentrypoint.sh

7. version: '2'
services:
www:
build: ./docker/www
ports:
- 8080:80
volumes_from:
- fpm
fpm:
build: ./
volumes:
- .:/var/www
working_dir: /var/www
links:
- postgres
postgres:
image: postgres
environment:
- POSTGRES_USER=user
- POSTGRES_PASSWORD=pass
- POSTGRES_DB=demo
ports:
- 54321:5432
docker-compose.yml

8. $ docker-compose up -d

9. $ docker-compose up -d
$ docker-compose -f docker-compose.yml up -d

10. $ docker-compose up -d
$ docker-compose -f docker-compose.yml up -d
$ docker-compose -f docker-compose.dev.yml -f docker-
compose.yml up -d

11. $ docker-compose up -d
$ docker-compose -f docker-compose.yml up -d
$ docker-compose -f docker-compose.dev.yml -f docker-
compose.yml up -d

12. $ dawajdoker

13. dup() {
if [ -f ./docker-compose.dev.yml ]; then
command docker-compose -f docker-compose.dev.yml -f
docker-compose.yml up -d
command docker-compose -f docker-compose.dev.yml -f
docker-compose.yml ps
else
command docker-compose up -d && docker-compose ps
fi
}

14. dup() {
if [ -f ./docker-compose.dev.yml ]; then
command docker-compose -f docker-compose.dev.yml -f
docker-compose.yml up -d
command docker-compose -f docker-compose.dev.yml -f
docker-compose.yml ps
else
command docker-compose up -d && docker-compose ps
fi
}

15. Name Command State Ports
----------------------------------------------------------------------------------------------------------
c1a3bd068237_c1a3bd068237_zpi_fpm_1 docker-php-entrypoint php-fpm Exit 0
zpi_jobrunner_1 /usr/bin/supervisord Exit 255
zpi_mailhog_1 MailHog Up 1025/tcp, 0.0.0.0:8084-
>8025/tcp
zpi_phppgadmin_1 /run.sh Up 0.0.0.0:8083->80/tcp
zpi_postgres_1 /docker-entrypoint.sh postgres Up 0.0.0.0:54321->5432/tcp
zpi_redis_1 docker-entrypoint.sh redis ... Up 6379/tcp
zpi_www_1 /usr/sbin/apache2ctl -D FO ... Exit 137
docker-compose ps

16. Name Command State Ports
----------------------------------------------------------------------------------------------------------
c1a3bd068237_c1a3bd068237_zpi_fpm_1 docker-php-entrypoint php-fpm Exit 0
zpi_jobrunner_1 /usr/bin/supervisord Exit 255
zpi_mailhog_1 MailHog Up 1025/tcp, 0.0.0.0:8084-
>8025/tcp
zpi_phppgadmin_1 /run.sh Up 0.0.0.0:8083->80/tcp
zpi_postgres_1 /docker-entrypoint.sh postgres Up 0.0.0.0:54321->5432/tcp
zpi_redis_1 docker-entrypoint.sh redis ... Up 6379/tcp
zpi_www_1 /usr/sbin/apache2ctl -D FO ... Exit 137
docker-compose ps
zpi_www_1

17. Name Command State Ports
----------------------------------------------------------------------------------------------------------
c1a3bd068237_c1a3bd068237_zpi_fpm_1 docker-php-entrypoint php-fpm Exit 0
zpi_jobrunner_1 /usr/bin/supervisord Exit 255
zpi_mailhog_1 MailHog Up 1025/tcp, 0.0.0.0:8084-
>8025/tcp
zpi_phppgadmin_1 /run.sh Up 0.0.0.0:8083->80/tcp
zpi_postgres_1 /docker-entrypoint.sh postgres Up 0.0.0.0:54321->5432/tcp
zpi_redis_1 docker-entrypoint.sh redis ... Up 6379/tcp
zpi_www_1 /usr/sbin/apache2ctl -D FO ... Exit 137
docker-compose ps
Exit 137

18. Attaching to zpi_www_1
www_1 | AH00112: Warning: DocumentRoot
[/var/www/html] does not exist
www_1 | AH00558: apache2: Could not reliably
determine the server's fully qualified domain name, using
172.18.0.7. Set the 'ServerName' directive globally to
suppress this message
www_1 | AH00112: Warning: DocumentRoot
[/var/www/html] does not exist
www_1 | AH00558: apache2: Could not reliably
determine the server's fully qualified domain name, using
172.18.0.2. Set the 'ServerName' directive globally to
suppress this message
docker-compose logs www

19. Attaching to zpi_www_1
www_1 | AH00112: Warning: DocumentRoot
[/var/www/html] does not exist
www_1 | AH00558: apache2: Could not reliably
determine the server's fully qualified domain name, using
172.18.0.7. Set the 'ServerName' directive globally to
suppress this message
www_1 | AH00112: Warning: DocumentRoot
[/var/www/html] does not exist
www_1 | AH00558: apache2: Could not reliably
determine the server's fully qualified domain name, using
172.18.0.2. Set the 'ServerName' directive globally to
suppress this message
docker-compose logs www

20. Attaching to zpi_www_1
www_1 | AH00112: Warning: DocumentRoot
[/var/www/html] does not exist
www_1 | AH00558: apache2: Could not reliably
determine the server's fully qualified domain name, using
172.18.0.7. Set the 'ServerName' directive globally to
suppress this message
www_1 | AH00112: Warning: DocumentRoot
[/var/www/html] does not exist
www_1 | AH00558: apache2: Could not reliably
determine the server's fully qualified domain name, using
172.18.0.2. Set the 'ServerName' directive globally to
suppress this message
docker-compose logs www

21. $ docker-compose restart

22. $ docker-compose restart
$ docker-compose restart www

23. $ docker-compose down

24. $ docker-compose down
Stops containers and removes containers, networks, volumes, and images created by up.

25. $ docker-compose stop
Stops running containers without removing them.

26. $ docker-compose stop
$ docker-compose stop www

27. $ docker-compose rm www

28. $ docker stop $(docker ps -a -q)
$ docker rm $(docker ps -a -q)
remove all containers

29. 2.
portainer.io
“The easiest way to
manage docker”

30. BUT
WHY?
There is a lot of other solutions.

31. 1. Appreciated by the community
2. Regularly developed
3. Promising Roadmap

32. awesome-docker

34. Latest commit c5db620 on 19 Jun 2016
Latest commit f0dd33b on 29 Mar 2015
Latest commit 5274c15 on 6 Jul 2016
Deprecation warning

35. future: docker compose support

36. future: docker compose support
Last comment in topic: 07.06.2017 19:44

37. installation
$ docker run -v "/var/run/docker.sock:/var/run/docker.sock"
-d -p 9000:9000 portainer/portainer
Underline part will be required for local environment, more info you can find here.

38. dashboard

39. dashboard

40. containers

41. container details

42. container details

43. THANKS!
Any questions?

44. CREDITS
Sources:
▸ JDD 2016: Docker. Przewodnik dla początkujących (Marcin Stożek)
▸ docker-awesome
▸ Docker basic concepts
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