A multi-container Symfony2 setup with Docker - Speaker Deck

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Geoffrey Bachelet – @ubermuda A multi-container Symfony2 setup with Docker.

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Container Engine? Based on the Linux kernel's LXC instructions Processes and resources isolation "chroot" on steroids / super lightweight VMs

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Host OS Hypervisor Guest OS Guest OS Guest OS Guest OS App App App App Host OS Docker + LXC App App App App VMs vs Containers

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Host OS Hypervisor Guest OS Guest OS Guest OS Guest OS App App App App Host OS Docker + LXC App App App App VMs vs Containers

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VMs vs Containers LXC / Jails / Zones / etc Uses the host's kernel Boots in seconds 0 overhead (almost) Easy to pass around Hypervisor Boots a complete OS Boots in minutes Guest OS' overhead Several Go images

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Install

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$ echo "deb https://get.docker.io/ubuntu docker main" \ > /etc/apt/sources.list.d/docker.list $ apt-‐get update $ apt-‐get install lxc-‐docker

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Create a container

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$ docker pull stackbrew/ubuntu ! $ docker run -‐i -‐t stackbrew/ubuntu /bin/bash ! root@21d86a0b8387:/#

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$ docker pull stackbrew/ubuntu ! $ docker run -‐i -‐t stackbrew/ubuntu /bin/bash ! root@21d86a0b8387:/#

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$ docker pull stackbrew/ubuntu ! $ docker run -‐i -‐t stackbrew/ubuntu /bin/bash ! root@21d86a0b8387:/#

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$ docker pull stackbrew/ubuntu ! $ docker run -‐i -‐t stackbrew/ubuntu /bin/bash ! root@21d86a0b8387:/#

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$ docker pull stackbrew/ubuntu ! $ docker run -‐i -‐t stackbrew/ubuntu /bin/bash ! root@21d86a0b8387:/#

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$ docker pull stackbrew/ubuntu ! $ docker run -‐i -‐t stackbrew/ubuntu /bin/bash ! root@21d86a0b8387:/#

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credit: http:/ /docs.docker.io/en/latest/terms/image/ Image

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credit: http:/ /docs.docker.io/en/latest/terms/image/ Container

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Commit the container

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root@21d86a0b8387:/# apt-‐get install nginx root@21d86a0b8387:/# exit ! $ docker ps -‐q -‐n 1 21d86a0b8387 ! $ docker commit 21d86a0b8387 sflive/nginx 240198b750c3cc950c60005d6d24cae4fc2dbcc6c31e274574af68d4a2e8 ! $ docker images REPOSITORY TAG IMAGE ID sflive/nginx latest 240198b750c3

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root@21d86a0b8387:/# apt-‐get install nginx root@21d86a0b8387:/# exit ! $ docker ps -‐q -‐n 1 21d86a0b8387 ! $ docker commit 21d86a0b8387 sflive/nginx 240198b750c3cc950c60005d6d24cae4fc2dbcc6c31e274574af68d4a2e8 ! $ docker images REPOSITORY TAG IMAGE ID sflive/nginx latest 240198b750c3

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root@21d86a0b8387:/# apt-‐get install nginx root@21d86a0b8387:/# exit ! $ docker ps -‐q -‐n 1 21d86a0b8387 ! $ docker commit 21d86a0b8387 sflive/nginx 240198b750c3cc950c60005d6d24cae4fc2dbcc6c31e274574af68d4a2e8 ! $ docker images REPOSITORY TAG IMAGE ID sflive/nginx latest 240198b750c3

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root@21d86a0b8387:/# apt-‐get install nginx root@21d86a0b8387:/# exit ! $ docker ps -‐q -‐n 1 21d86a0b8387 ! $ docker commit 21d86a0b8387 sflive/nginx 240198b750c3cc950c60005d6d24cae4fc2dbcc6c31e274574af68d4a2e8 ! $ docker images REPOSITORY TAG IMAGE ID sflive/nginx latest 240198b750c3

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root@21d86a0b8387:/# apt-‐get install nginx root@21d86a0b8387:/# exit ! $ docker ps -‐q -‐n 1 21d86a0b8387 ! $ docker commit 21d86a0b8387 sflive/nginx 240198b750c3cc950c60005d6d24cae4fc2dbcc6c31e274574af68d4a2e8 ! $ docker images REPOSITORY TAG IMAGE ID sflive/nginx latest 240198b750c3

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Run the image

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$ docker run -‐p 80 sflive/nginx nginx -‐g 'daemon off;'

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$ docker ps CONTAINER ID ... PORTS 923cb190dbc3 ... 0.0.0.0:49155-‐>80/tcp ! $ curl http://localhost:49155 Welcome to nginx! ...

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$ docker ps CONTAINER ID ... PORTS 923cb190dbc3 ... 0.0.0.0:49155-‐>80/tcp ! $ curl http://localhost:49155 Welcome to nginx! ...

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Dockerﬁle

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credit: http:/ /docs.docker.io/en/latest/terms/image/

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$ cd /project project $ bin/start Loading composer repositories with package information Installing dependencies (including require-‐dev) from lock file ...

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FROM sflive/base ENV DEBIAN_FRONTEND noninteractive ! RUN apt-‐get install -‐y \ daemontools curl nginx mysql-‐server redis-‐server \ php5-‐cli php5-‐json php5-‐fpm php5-‐intl php5-‐mysqlnd ! RUN curl -‐sS https://getcomposer.org/installer | php RUN mv composer.phar /usr/local/bin/composer ! RUN echo "daemonize=no" > /etc/php5/fpm/pool.d/daemonize.conf RUN echo "\ndaemon off;" >> /etc/nginx/nginx.conf ! ADD vhost.conf /etc/nginx/sites-‐enabled/default ADD php.ini /etc/php5/fpm/php.ini ADD php.ini /etc/php5/cli/php.ini ADD my.cnf /etc/mysql/my.cnf ADD services/ /srv/services ADD entrypoint.sh /usr/local/bin/entrypoint.sh ! EXPOSE 80 ! ENTRYPOINT ["/usr/local/bin/entrypoint.sh"]

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FROM sflive/base ENV DEBIAN_FRONTEND noninteractive

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RUN apt-‐get install -‐y \ daemontools curl nginx mysql-‐server redis-‐server \ php5-‐cli php5-‐json php5-‐fpm php5-‐intl php5-‐mysqlnd ! RUN curl -‐sS https://getcomposer.org/installer | php RUN mv composer.phar /usr/local/bin/composer

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RUN echo "daemonize=no" \ > /etc/php5/fpm/pool.d/daemonize.conf ! RUN echo "\ndaemon off;" \ >> /etc/nginx/nginx.conf

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ADD vhost.conf /etc/nginx/sites-‐enabled/default ADD php.ini /etc/php5/fpm/php.ini ADD php.ini /etc/php5/cli/php.ini ADD my.cnf /etc/mysql/my.cnf ADD services/ /srv/services ! ADD entrypoint.sh /usr/local/bin/entrypoint.sh

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ADD vhost.conf /etc/nginx/sites-‐enabled/default ADD php.ini /etc/php5/fpm/php.ini ADD php.ini /etc/php5/cli/php.ini ADD my.cnf /etc/mysql/my.cnf ADD services/ /srv/services ! ADD entrypoint.sh /usr/local/bin/entrypoint.sh

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EXPOSE 80 ! ENTRYPOINT ["/usr/local/bin/entrypoint.sh"]

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symfony2 ├── Dockerfile ├── entrypoint.sh ├── my.cnf ├── php.ini ├── services │ ├── mysql │ │ └── run │ ├── nginx │ │ └── run │ └── php5-‐fpm │ └── run └── vhost.conf

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symfony2 ├── Dockerfile ├── entrypoint.sh ├── my.cnf ├── php.ini ├── services │ ├── mysql │ │ └── run │ ├── nginx │ │ └── run │ └── php5-‐fpm │ └── run └── vhost.conf

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symfony2 ├── Dockerfile ├── entrypoint.sh ├── my.cnf ├── php.ini ├── services │ ├── mysql │ │ └── run │ ├── nginx │ │ └── run │ └── php5-‐fpm │ └── run └── vhost.conf #!/bin/bash exec /usr/bin/mysqld_safe #!/bin/bash exec /usr/bin/nginx #!/bin/bash exec /usr/sbin/php5-‐fpm

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symfony2 ├── Dockerfile ├── entrypoint.sh ├── my.cnf ├── php.ini ├── services │ ├── mysql │ │ └── run │ ├── nginx │ │ └── run │ └── php5-‐fpm │ └── run └── vhost.conf #!/bin/bash -‐e ! if [ ! -‐d /var/www ]; then echo 'No application found in /var/www' exit 1; fi ! cd /var/www ! if [ ! -‐d vendor ]; then composer install fi ! if [ -‐f ./init.sh ]; then ./init.sh fi ! exec svscan /srv/services

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symfony2 ├── Dockerfile ├── entrypoint.sh ├── my.cnf ├── php.ini ├── services │ ├── mysql │ │ └── run │ ├── nginx │ │ └── run │ └── php5-‐fpm │ └── run └── vhost.conf #!/bin/bash -‐e ! if [ ! -‐d /var/www ]; then echo 'No application found in /var/www' exit 1; fi ! cd /var/www ! if [ ! -‐d vendor ]; then composer install fi ! if [ -‐f ./init.sh ]; then ./init.sh fi ! exec svscan /srv/services

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symfony2 ├── Dockerfile ├── entrypoint.sh ├── my.cnf ├── php.ini ├── services │ ├── mysql │ │ └── run │ ├── nginx │ │ └── run │ └── php5-‐fpm │ └── run └── vhost.conf #!/bin/bash -‐e ! if [ ! -‐d /var/www ]; then echo 'No application found in /var/www' exit 1; fi ! cd /var/www ! if [ ! -‐d vendor ]; then composer install fi ! if [ -‐f ./init.sh ]; then ./init.sh fi ! exec svscan /srv/services

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symfony2 ├── Dockerfile ├── entrypoint.sh ├── my.cnf ├── php.ini ├── services │ ├── mysql │ │ └── run │ ├── nginx │ │ └── run │ └── php5-‐fpm │ └── run └── vhost.conf #!/bin/bash -‐e ! if [ ! -‐d /var/www ]; then echo 'No application found in /var/www' exit 1; fi ! cd /var/www ! if [ ! -‐d vendor ]; then composer install fi ! if [ -‐f ./init.sh ]; then ./init.sh fi ! exec svscan /srv/services

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symfony2 ├── Dockerfile ├── entrypoint.sh ├── my.cnf ├── php.ini ├── services │ ├── mysql │ │ └── run │ ├── nginx │ │ └── run │ └── php5-‐fpm │ └── run └── vhost.conf #!/bin/bash -‐e ! if [ ! -‐d /var/www ]; then echo 'No application found in /var/www' exit 1; fi ! cd /var/www ! if [ ! -‐d vendor ]; then composer install fi ! if [ -‐f ./init.sh ]; then ./init.sh fi ! exec svscan /srv/services

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$ docker build -‐t sflive/symfony2 symfony2/

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$ docker build -‐t sflive/symfony2 symfony2/

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$ docker run \ -‐p 8000:80 \ -‐v /project:/var/www \ sflive/symfony2

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$ docker run \ -‐p 8000:80 \ -‐v /project:/var/www \ sflive/symfony2

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$ docker run \ -‐p 8000:80 \ -‐v /project:/var/www \ sflive/symfony2

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#!/bin/bash docker run -‐d \ -‐v $(pwd):/var/www \ -‐p 80:80 \ -‐-‐cidfile app/cache/docker.cid \ sflive/symfony2 bin/start

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#!/bin/bash docker stop $(cat app/cache/docker.cid) bin/stop

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$ cd /project project $ bin/start Loading composer repositories with package information Installing dependencies (including require-‐dev) from lock file ...

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Host OS THE INTERNET container nginx mysql php5-fpm

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Multi-container setup

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Host OS THE INTERNET nginx mysql php5-fpm /var/www /var/lib/mysql

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Containers links

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$ docker run -‐-‐name redis sflive/redis ! $ docker run -‐-‐link redis:foo sflive/symfony2

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$ docker run -‐-‐name redis sflive/redis ! $ docker run -‐-‐link redis:foo sflive/symfony2

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$ docker run -‐-‐name redis sflive/redis ! $ docker run -‐-‐link redis:foo sflive/symfony2

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$ printenv | grep -‐E '^FOO' FOO_PORT=tcp://172.17.0.44:6379 FOO_PORT_6379_TCP_PROTO=tcp FOO_PORT_6379_TCP_PORT=6379 FOO_PORT_6379_TCP=tcp://172.17.0.44:6379 FOO_NAME=/crimson_squirrel9/redis FOO_PORT_6379_TCP_ADDR=172.17.0.44

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$ printenv | grep -‐E '^FOO' FOO_PORT=tcp://172.17.0.44:6379 FOO_PORT_6379_TCP_PROTO=tcp FOO_PORT_6379_TCP_PORT=6379 FOO_PORT_6379_TCP=tcp://172.17.0.44:6379 FOO_NAME=/crimson_squirrel9/redis FOO_PORT_6379_TCP_ADDR=172.17.0.44

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imports: -‐ { resource: parameters.php } app/config/config.yml

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app/config/parameters.php setParameter( 'redis_host', getenv('FOO_PORT_6379_TCP_ADDR') );

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. ├── base │ └── Dockerfile ├── data │ └── Dockerfile ├── mysql │ ├── Dockerfile │ ├── entrypoint.sh │ └── my.cnf ├── nginx │ ├── Dockerfile │ ├── entrypoint.sh │ └── vhost.conf └── php5 ├── Dockerfile └── php.ini

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. ├── base │ └── Dockerfile ├── data │ └── Dockerfile ├── mysql │ ├── Dockerfile │ ├── entrypoint.sh │ └── my.cnf ├── nginx │ ├── Dockerfile │ ├── entrypoint.sh │ └── vhost.conf └── php5 ├── Dockerfile └── php.ini

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. ├── base │ └── Dockerfile ├── data │ └── Dockerfile ├── mysql │ ├── Dockerfile │ ├── entrypoint.sh │ └── my.cnf ├── nginx │ ├── Dockerfile │ ├── entrypoint.sh │ └── vhost.conf └── php5 ├── Dockerfile └── php.ini FROM sflive/base VOLUME ["/var/lib/mysql"] ENTRYPOINT ["true"]

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. ├── base │ └── Dockerfile ├── data │ └── Dockerfile ├── mysql │ ├── Dockerfile │ ├── entrypoint.sh │ └── my.cnf ├── nginx │ ├── Dockerfile │ ├── entrypoint.sh │ └── vhost.conf └── php5 ├── Dockerfile └── php.ini FROM sflive/base VOLUME ["/var/lib/mysql"] ENTRYPOINT ["true"]

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. ├── base │ └── Dockerfile ├── data │ └── Dockerfile ├── mysql │ ├── Dockerfile │ ├── entrypoint.sh │ └── my.cnf ├── nginx │ ├── Dockerfile │ ├── entrypoint.sh │ └── vhost.conf └── php5 ├── Dockerfile └── php.ini #!/bin/bash ! if [ ! -‐f /var/lib/mysql/ibdata1 ]; then mysql_install_db > /dev/null fi ! exec /usr/bin/mysqld_safe

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. ├── base │ └── Dockerfile ├── data │ └── Dockerfile ├── mysql │ ├── Dockerfile │ ├── entrypoint.sh │ └── my.cnf ├── nginx │ ├── Dockerfile │ ├── entrypoint.sh │ └── vhost.conf └── php5 ├── Dockerfile └── php.ini #!/bin/bash ! if [ ! -‐f /var/lib/mysql/ibdata1 ]; then mysql_install_db > /dev/null fi ! exec /usr/bin/mysqld_safe

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. ├── base │ └── Dockerfile ├── data │ └── Dockerfile ├── mysql │ ├── Dockerfile │ ├── entrypoint.sh │ └── my.cnf ├── nginx │ ├── Dockerfile │ ├── entrypoint.sh │ └── vhost.conf └── php5 ├── Dockerfile └── php.ini bind-‐address = 0.0.0.0

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. ├── base │ └── Dockerfile ├── data │ └── Dockerfile ├── mysql │ ├── Dockerfile │ ├── entrypoint.sh │ └── my.cnf ├── nginx │ ├── Dockerfile │ ├── entrypoint.sh │ └── vhost.conf └── php5 ├── Dockerfile └── php.ini #!/bin/bash for env in $(printenv); do IFS== read KEY VALUE <<< "$env" sed \ -‐e "s,\${${KEY}},${VALUE},g" \ -‐i /etc/nginx/sites-‐enabled/default done; ! exec /usr/sbin/nginx

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. ├── base │ └── Dockerfile ├── data │ └── Dockerfile ├── mysql │ ├── Dockerfile │ ├── entrypoint.sh │ └── my.cnf ├── nginx │ ├── Dockerfile │ ├── entrypoint.sh │ └── vhost.conf └── php5 ├── Dockerfile └── php.ini location ~ [^/]\.php(/|$) { fastcgi_pass ${PHP5_PORT_9000_TCP_ADDR}:9000; include fastcgi_params; }

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. ├── base │ └── Dockerfile ├── data │ └── Dockerfile ├── mysql │ ├── Dockerfile │ ├── entrypoint.sh │ └── my.cnf ├── nginx │ ├── Dockerfile │ ├── entrypoint.sh │ └── vhost.conf └── php5 ├── Dockerfile └── php.ini location ~ [^/]\.php(/|$) { fastcgi_pass ${PHP5_PORT_9000_TCP_ADDR}:9000; include fastcgi_params; }

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. ├── base │ └── Dockerfile ├── data │ └── Dockerfile ├── mysql │ ├── Dockerfile │ ├── entrypoint.sh │ └── my.cnf ├── nginx │ ├── Dockerfile │ ├── entrypoint.sh │ └── vhost.conf └── php5 ├── Dockerfile └── php.ini RUN sed \ -‐e "s,127.0.0.1:9000,9000," \ -‐i /etc/php5/fpm/pool.d/www.conf

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. ├── base │ └── Dockerfile ├── data │ └── Dockerfile ├── mysql │ ├── Dockerfile │ ├── entrypoint.sh │ └── my.cnf ├── nginx │ ├── Dockerfile │ ├── entrypoint.sh │ └── vhost.conf └── php5 ├── Dockerfile └── php.ini RUN sed \ -‐e "s,127.0.0.1:9000,9000," \ -‐i /etc/php5/fpm/pool.d/www.conf

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$ docker build -‐t sflive/base base/ $ docker build -‐t sflive/data data/ $ docker build -‐t sflive/mysql mysql/ $ docker build -‐t sflive/nginx nginx/ $ docker build -‐t sflive/php5 php5/

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#!/bin/bash -‐e for name in $(find -‐maxdepth 1 ! -‐path . -‐type d); do docker build -‐t sflive/$(basename $name) -‐-‐rm $name done;

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$ docker run -‐name data sflive/data ! $ docker run -‐-‐volumes-‐from data -‐name mysql sflive/mysql ! $ docker run -‐v $(pwd):/var/www -‐name php5 sflive/php5 ! $ docker run -‐p 80:80 -‐v $(pwd):/var/www \ -‐link php5:php5 \ -‐link mysql:mysql \ sflive/nginx

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$ docker run -‐name data sflive/data ! $ docker run -‐-‐volumes-‐from data -‐name mysql sflive/mysql ! $ docker run -‐v $(pwd):/var/www -‐name php5 sflive/php5 ! $ docker run -‐p 80:80 -‐v $(pwd):/var/www \ -‐link php5:php5 \ -‐link mysql:mysql \ sflive/nginx

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$ docker run -‐name data sflive/data ! $ docker run -‐-‐volumes-‐from data -‐name mysql sflive/mysql ! $ docker run -‐v $(pwd):/var/www -‐name php5 sflive/php5 ! $ docker run -‐p 80:80 -‐v $(pwd):/var/www \ -‐link php5:php5 \ -‐link mysql:mysql \ sflive/nginx

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And more! • docker run -d, attach, logs, top, ... • Orchestration (Gaudi, Fig, ...) • Docker Index • Docker Remote API (dockerode, Docker-PHP, ...) • Dockerﬁle: USER, WORKDIR, ONBUILD, ... • ...

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Recap. • Image: like a VM image. Contains the hard-drive (rootfs) and some conﬁguration. • Container: a running instance of an image.

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• You can commit a terminated container, and you get a re-usable image representing the state of that container. • Volumes are like shared directories. Containers can share zero or many volumes. • Containers can be linked to one another. Recap.

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Thanks! https://github.com/ubermuda/sﬂive-docker/ Geoffrey Bachelet – @ubermuda