Download to read offline
![14
The Dockerfile
●
Really basic example from http://goo.gl/Z2OWXN
FROM ubuntu
MAINTAINER SvenDowideit@docker.com
RUN aptkey adv keyserver keyserver.ubuntu.com recvkeys
B97B0AFCAA1A47F044F244A07FCC7D46ACCC4CF8
RUN echo "deb http://apt.postgresql.org/pub/repos/apt/ precisepgdg main"
> /etc/apt/sources.list.d/pgdg.list
RUN aptget update
RUN aptget y q install pythonsoftwareproperties softwarepropertiescommon
RUN aptget y q install postgresql9.3 postgresqlclient9.3
postgresqlcontrib9.3
USER postgres
RUN /etc/init.d/postgresql start &&
psql command "CREATE USER docker WITH SUPERUSER PASSWORD 'docker';" &&
createdb O docker docker
RUN echo "host all all 0.0.0.0/0 md5"
>> /etc/postgresql/9.3/main/pg_hba.conf
RUN echo "listen_addresses='*'" >> /etc/postgresql/9.3/main/postgresql.conf
EXPOSE 5432
VOLUME ["/etc/postgresql", "/var/log/postgresql", "/var/lib/postgresql"]
CMD ["/usr/lib/postgresql/9.3/bin/postgres", "D",
"/var/lib/postgresql/9.3/main", "c",
"config_file=/etc/postgresql/9.3/main/postgresql.conf"]](https://image.slidesharecdn.com/dockerworkshop-20140522-170509040645/85/Docker-Workshop-14-320.jpg)
![15
Let's build that on RHEL
●
Installation procedure for RHEL 6.5
●
Get key from
●
http://github.com/jason-callaway/openstackdc
### AWS instances are preregistered for updates
[root@localhost]# yum update y
[root@localhost]# wget https://mirror.us.leaseweb.net/epel/6/x86_64/epel
release68.noarch.rpm
[root@localhost]# yum install y ./epelrelease68.noarch.rpm
[root@localhost]# yum install y dockerio git postgresql
[root@localhost]# service docker start; chkconfig docker on
[root@localhost]# git clone http://github.com/jasoncallaway/openstackdc
[root@localhost]# cd openstackdc
[root@localhost]# ln s Dockerfile_ubuntupostgres Dockerfile
[root@localhost]# docker build t <yourname>_pg .
### Look at the new image you've made
[root@localhost]# docker images
### Now let's run it
[root@localhost]# docker run d name pg <yourname>_pg
### Check the running containers
[root@localhost]# docker ps
[root@localhost]# docker inspect pg](https://image.slidesharecdn.com/dockerworkshop-20140522-170509040645/85/Docker-Workshop-15-320.jpg)
![16
Now let's make one based on Fedora
FROM fedora
MAINTAINER alexb@redhat.com
RUN yum install y postgresqlserver
USER postgres
RUN /bin/initdb D /var/lib/pgsql/data
RUN /usr/bin/pg_ctl start D /var/lib/pgsql/data s o "p 5432" w t 300 &&
/bin/psql command "CREATE USER docker WITH SUPERUSER PASSWORD 'docker';" &&
/bin/createdb O docker docker
RUN echo "host all all 0.0.0.0/0 md5" >> /var/lib/pgsql/data/pg_hba.conf
RUN echo "listen_addresses='*'" >> /var/lib/pgsql/data/postgresql.conf
EXPOSE 5432
VOLUME ["/var/lib/pgsql/data"]
CMD ["/bin/postgres", "D", "/var/lib/pgsql/data", "c",
"config_file=/var/lib/pgsql/data/postgresql.conf"]](https://image.slidesharecdn.com/dockerworkshop-20140522-170509040645/85/Docker-Workshop-16-320.jpg)
Uploaded byAlex Baretto
Docker Workshop
Docker allows applications to be packaged with all their dependencies and run consistently across any infrastructure. It creates lightweight containers that can be moved between environments like development, testing, and production without changes. This solves issues caused by different application component combinations and environments by standardizing the deployment package. Docker eliminates complexity through portable containers that can be easily built, shipped, and run anywhere.
Docker Workshop
- 1. 1 Docker Workshop Alex Barreto CloudDomain Architect alexb@redhat.com @shakamunyi 22 May 2014
- 2. 2 So what isthis Docker? An open source project to pack, ship and run any application as a lightweight container
- 3. 3 What do youhave to say for yourself?
- 4. Static website Web frontend UserDB Queue Analytics DB Background workers API endpoint nginx 1.5 + modsecurity + openssl + bootstrap 2 postgresql + pgv8 + v8 hadoop + hive + thrift + OpenJDK Ruby + Rails + sass + Unicorn Redis + redis-sentinel Python 3.0 + celery + pyredis + libcurl + ffmpeg + libopencv + nodejs + phantomjs Python 2.7 + Flask + pyredis + celery + psycopg + postgresql-client Development VM QA server Public Cloud Disaster recovery Contributor’s laptop Production Servers The Challenge MultplicityofStacks Multplicityofhardware environments Production Cluster Customer Data Center Doservicesandappsinteract appropriately? CanImigratesmoothlyandquickly?
- 5. The Matrix FromHell Static website Web frontend Background workers User DB Analytics DB Queue Development VM QA Server Single Prod Server Onsite Cluster Public Cloud Contributor’s laptop Customer Servers ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
- 6.
- 7. ? ? ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? Also a matrix from hell
- 8. MultplicityofGoods Multplicityofmethodsfor transportng/storing DoIworryabouthowgoodsinteract (e.g.cofeebeansnexttospices) CanItransportquicklyandsmoothly (e.g.fromboattotraintotruck) Solution: Intermodal ShippingContainer …in between, can be loaded and unloaded, stacked, transported efficiently over long distances, and transferred from one mode of transport to another A standard container that is loaded with virtually any goods, and stays sealed until it reaches final delivery.
- 9. Static website WebfrontendUser DB Queue Analytics DB Development VM QA server Public Cloud Contributor’s laptop Docker is a shipping container system for code MultplicityofStacks Multplicityofhardwareenvironments Production ClusterCustomer Data Center Doservicesandappsinteract appropriately? CanImigratesmoothlyandquickly …that can be manipulated using standard operations and run consistently on virtually any hardware platform An engine that enables any payload to be encapsulated as a lightweight, portable, self-sufficient container…
- 10. Static website Web frontend Backgroundworkers User DB Analytics DB Queue Development VM QA Server Single Prod Server Onsite Cluster Public Cloud Contributor’s laptop Customer Servers Docker eliminates the matrix from Hell
- 11.
- 12. 12 The deets ● Requirements ● x86 ISA ● LinuxKernel 3.2+, or 2.6.32+ for RHEL/Fedora ● Isolation – a docker container has its own: ● Process namespace ● Network interface ● Root user ● Upstart / systemd (optional) ● But it doesn't have its own: ● Hypervisor ● Kernel
- 13. 13 Process to builda Docker Container Dockerfile Build Docker Host OS Container Docker Index index.docker.io
- 14. 14 The Dockerfile ● Really basicexample from http://goo.gl/Z2OWXN FROM ubuntu MAINTAINER SvenDowideit@docker.com RUN aptkey adv keyserver keyserver.ubuntu.com recvkeys B97B0AFCAA1A47F044F244A07FCC7D46ACCC4CF8 RUN echo "deb http://apt.postgresql.org/pub/repos/apt/ precisepgdg main" > /etc/apt/sources.list.d/pgdg.list RUN aptget update RUN aptget y q install pythonsoftwareproperties softwarepropertiescommon RUN aptget y q install postgresql9.3 postgresqlclient9.3 postgresqlcontrib9.3 USER postgres RUN /etc/init.d/postgresql start && psql command "CREATE USER docker WITH SUPERUSER PASSWORD 'docker';" && createdb O docker docker RUN echo "host all all 0.0.0.0/0 md5" >> /etc/postgresql/9.3/main/pg_hba.conf RUN echo "listen_addresses='*'" >> /etc/postgresql/9.3/main/postgresql.conf EXPOSE 5432 VOLUME ["/etc/postgresql", "/var/log/postgresql", "/var/lib/postgresql"] CMD ["/usr/lib/postgresql/9.3/bin/postgres", "D", "/var/lib/postgresql/9.3/main", "c", "config_file=/etc/postgresql/9.3/main/postgresql.conf"]
- 15. 15 Let's build thaton RHEL ● Installation procedure for RHEL 6.5 ● Get key from ● http://github.com/jason-callaway/openstackdc ### AWS instances are preregistered for updates [root@localhost]# yum update y [root@localhost]# wget https://mirror.us.leaseweb.net/epel/6/x86_64/epel release68.noarch.rpm [root@localhost]# yum install y ./epelrelease68.noarch.rpm [root@localhost]# yum install y dockerio git postgresql [root@localhost]# service docker start; chkconfig docker on [root@localhost]# git clone http://github.com/jasoncallaway/openstackdc [root@localhost]# cd openstackdc [root@localhost]# ln s Dockerfile_ubuntupostgres Dockerfile [root@localhost]# docker build t <yourname>_pg . ### Look at the new image you've made [root@localhost]# docker images ### Now let's run it [root@localhost]# docker run d name pg <yourname>_pg ### Check the running containers [root@localhost]# docker ps [root@localhost]# docker inspect pg
- 16. 16 Now let's makeone based on Fedora FROM fedora MAINTAINER alexb@redhat.com RUN yum install y postgresqlserver USER postgres RUN /bin/initdb D /var/lib/pgsql/data RUN /usr/bin/pg_ctl start D /var/lib/pgsql/data s o "p 5432" w t 300 && /bin/psql command "CREATE USER docker WITH SUPERUSER PASSWORD 'docker';" && /bin/createdb O docker docker RUN echo "host all all 0.0.0.0/0 md5" >> /var/lib/pgsql/data/pg_hba.conf RUN echo "listen_addresses='*'" >> /var/lib/pgsql/data/postgresql.conf EXPOSE 5432 VOLUME ["/var/lib/pgsql/data"] CMD ["/bin/postgres", "D", "/var/lib/pgsql/data", "c", "config_file=/var/lib/pgsql/data/postgresql.conf"]
- 17. 17 Docker Workshop Alex Barreto CloudDomain Architect alexb@redhat.com @shakamunyi 22 May 2014