![BUILDING AN IMAGE (DOCKERFILE)
FROM centos:stable
RUN yum -y upgrade
RUN yum install httpd
COPY httpd.conf /etc/httpd/conf/httpd.conf
EXPOSE 80
ENTRYPOINT ["/usr/sbin/apachectl", "-DFOREGOUND"]](https://image.slidesharecdn.com/fun-with-containers-141017122518-conversion-gate01/85/Fun-with-containers-Use-Ansible-to-build-Docker-images-9-320.jpg)
![BUILDING AN IMAGE (WITH ANSIBLE)
FROM ansible/centos7-ansible:stable
ADD ansible /srv/example/
WORKDIR /srv/example
RUN ansible-playbook site.yml -c local
EXPOSE 80
ENTRYPOINT ["/usr/sbin/apachectl", "-DFOREGROUND"]](https://image.slidesharecdn.com/fun-with-containers-141017122518-conversion-gate01/85/Fun-with-containers-Use-Ansible-to-build-Docker-images-10-320.jpg)
![A MORE COMPLEX EXAMPLE!
tasks:
- yum: pkg=httpd state=present
when: ansible_os_family == "RedHat"
- apt: update_cache=yes name="apache2" state=present
when: ansible_os_family == "Debian"
- name: Make an apachectl symlink that is the same between distros
file:
state: link
src: "{{apache_ctl[ansible_os_family]}}"
dest: /usr/local/bin/apachectl](https://image.slidesharecdn.com/fun-with-containers-141017122518-conversion-gate01/85/Fun-with-containers-Use-Ansible-to-build-Docker-images-14-320.jpg)
![A MORE COMPLEX EXAMPLE!
- name: Apply httpd configuration from template
template:
src: httpd.conf.j2
dest: /etc/httpd/conf/httpd.conf
group: "{{ apache_group[ansible_os_family] }}"
mode: "0644"](https://image.slidesharecdn.com/fun-with-containers-141017122518-conversion-gate01/85/Fun-with-containers-Use-Ansible-to-build-Docker-images-15-320.jpg)
Fun with containers: Use Ansible to build Docker images
- 1. HELLO WORLD! Toshio Kuratomi Worked for Red Hat on the Fedora Infrastructure Team Little bit of sysadmin work Gobs of Python
- 2. FUN WITH CONTAINERS and Toshio Kuratomi
- 3. WHAT IS DOCKER? Manages Linux containers Allows deploying applications in isolation Docker Hub ecosystem for distributing general containers
- 4. IMAGES Made of layers Base Images basically OS installs Immutable Customize by creating a new layer on top
- 5. WHAT CAN I DO WITH IT? Lightweight cloud Tool for encapsulating applications
- 6. LIGHTWEIGHT CLOUD Lower runtime overhead Layered filesystem Very quick startup time
- 7. ENCAPSULATED APPLICATIONS Low overhead Run application on startup Similar to init
- 8. GREAT! SO WHAT'S ANSIBLE GOT TO DO WITH IT?
- 9. BUILDING AN IMAGE (DOCKERFILE) FROM centos:stable RUN yum -y upgrade RUN yum install httpd COPY httpd.conf /etc/httpd/conf/httpd.conf EXPOSE 80 ENTRYPOINT ["/usr/sbin/apachectl", "-DFOREGOUND"]
- 10. BUILDING AN IMAGE (WITH ANSIBLE) FROM ansible/centos7-ansible:stable ADD ansible /srv/example/ WORKDIR /srv/example RUN ansible-playbook site.yml -c local EXPOSE 80 ENTRYPOINT ["/usr/sbin/apachectl", "-DFOREGROUND"]
- 11. BUILDING AN IMAGE (WITH ANSIBLE) ansible/site.yml: - hosts: localhost tasks: - yum: pkg=httpd state=present - copy: src: httpd.conf dest: /etc/httpd/conf/httpd.conf group: "apache" mode: "0644"
- 12. HUH. SO WHAT MAKES ANSIBLE BETTER? Power and consistency Same method to configure images as your hosts Templates and Conditionals Portability Try out new things via Galaxy roles
- 13. A MORE COMPLEX EXAMPLE! - hosts: localhost vars: apache_group: Debian: "root" RedHat: "apache" apache_ctl: Debian: "/usr/sbin/apache2ctl" RedHat: "/usr/sbin/apachectl"
- 14. A MORE COMPLEX EXAMPLE! tasks: - yum: pkg=httpd state=present when: ansible_os_family == "RedHat" - apt: update_cache=yes name="apache2" state=present when: ansible_os_family == "Debian" - name: Make an apachectl symlink that is the same between distros file: state: link src: "{{apache_ctl[ansible_os_family]}}" dest: /usr/local/bin/apachectl
- 15. A MORE COMPLEX EXAMPLE! - name: Apply httpd configuration from template template: src: httpd.conf.j2 dest: /etc/httpd/conf/httpd.conf group: "{{ apache_group[ansible_os_family] }}" mode: "0644"
- 16. GALAXY + DOCKER == TRY BEFORE YOU BUY FROM ansible/ubuntu14.04-ansible:stable RUN mkdir /srv/example WORKDIR /srv/example ADD site.yml /srv/example/ RUN ansible-galaxy install geerlingguy.memcached RUN ansible-playbook site.yml -c local EXPOSE 11211 ENTRYPOINT ["/usr/bin/memcached", "-u", "memcache", "-l", "0.0.0.0", "-c" "1024", "-p",
- 17. GALAXY + DOCKER == TRY BEFORE YOU BUY - hosts: localhost roles: - role: geerlingguy.memcached
- 18. IMAGES FOR BUILDING Ansible layered on a Base OS Image Building four images Two images for Ubuntu-14.04 Two images for CentOS-7 An image for Ansible HEAD An image for the Ansible release on pypi
- 19. CONTACT INFO & RESOURCES https://registry.hub.docker.com/u/ansible/centos7-ansible/ https://registry.hub.docker.com/u/ansible/ubuntu14.04-ansible/ http://ansible.github.com/ansible/ansible-docker-base http://ansible.com tkuratomi@ansible.com