Another lightning talk about Ansible, delivered at PyWaw

1. | Ansible @ PyWaw
Ansible
Grzegorz Nosek
PyWaw 21.01.2013

2. | Ansible @ PyWaw
Ansible
Grzegorz Nosek
PyWaw 21.01.2013

3. | Ansible @ PyWaw
Ansible
fictitious machine capable of instantaneous
or superluminal communication
– http://en.wikipedia.org/wiki/Ansible

4. | Ansible @ PyWaw
Ansible
the easiest way to deploy, manage, and orchestrate
computer systems you've ever seen
– http://ansible.cc/

5. | Ansible @ PyWaw
www1
ssh
www2
master
db1
db2

6. | Ansible @ PyWaw
# pip install ansible
# mkdir /etc/ansible
# cat > /etc/ansible/hosts << EOF
master
master
[www]
www1
www2
[db]
db1
db2
EOF

7. | Ansible @ PyWaw
www1
www2
. python (2.6)
. authorized_keys
db1
db2

8. | Ansible @ PyWaw
mass ssh
ansible all -m ping
ansible www -m service -a „name=nginx
state=restarted”
ansible db1 -m command -a „killall pgdump”

9. | Ansible @ PyWaw
deploy (fabric)
ansible-playbook deploy.yml
--- hosts: www
actions:
- action: git repo=... dest=...
notify: restart gunicorn
handlers:
- name: restart gunicorn
action: service name=gunicorn
state=restarted
- hosts: db
actions:
- ...

10. | Ansible @ PyWaw
deploy (fabric)
+ declarative
+ idempotent
wget
./configure && make
make install
template src=... dest=...
service foo state=started

11. | Ansible @ PyWaw
config mgmt (puppet)
--- hosts: www
actions:
- action: apt pkg=$item
with_items:
- nginx
- python-virtualenv
- action: template src=... dest=...
- action: command foo creates=/etc/bar

12. | Ansible @ PyWaw
config mgmt (puppet)
+ imperative
+ non-idempotent
+ cross-machine

13. | Ansible @ PyWaw
provisioning
. EC2
. VMWare
. VirtualBox
. HP iLO
. ...

14. | Ansible @ PyWaw
Ansible modules
. command
. git
. fetch
. template
. service
. +∞

15. „
| Ansible @ PyWaw
Boże, żebyśmy my to
mieli w $(job-1)
– Marcin, nasz nowy admin :)

16. | Ansible @ PyWaw
http://ansible.cc/
QA?