Larry Nung gave a presentation on Ansible, an open source tool for configuration management and application deployment. He began with an introduction to Ansible, noting that it is simple, powerful, and agentless. He then covered installation on various operating systems using packages or Python pip. Nung also discussed preparing SSH environments, using the Ansible and Ansible-playbook CLIs to manage inventory and playbooks. Key modules like command, shell, apt, copy and setup were explained. The presentation concluded with a Q&A section and reference materials for further reading.

1. ANSIBLE - SIMPLE IT AUTOMATION
Larry Nung

2. AGENDA
Introduction
Installation
Prepare SSH environment
Ansible CLI
Inventory
Playbook
Ansible-playbook CLI
Reference
Q & A
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3. INTRODUCTION
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4. INTRODUCTION
 Configuration management tool
 Simple
 Powerful
 Agentless
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5. INSTALLATION
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6. INSTALLATION
 Ubuntu
 sudo apt-get install software-properties-common
 sudo apt-add-repository ppa:ansible/ansible
 sudo apt-get update
 sudo apt-get install ansible
 Mac
 brew install ansible
 CentOS/RHEL
 yum -y install epel-release
 yum -y --enablerepo=epel-testing install ansible
 Python
 pip install ansible
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7. PREPARE SSH ENVIRONMENT
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8. PREPARE SSH ENVIRONMENT
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9. PREPARE SSH ENVIRONMENT
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10. ANSIBLE CLI
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11. ANSIBLE CLI
Usage: ansible <host-pattern> [options]
Options:
-a MODULE_ARGS, --args=MODULE_ARGS
module arguments
-k, --ask-pass ask for SSH password
-K, --ask-sudo-pass ask for sudo password
-B SECONDS, --background=SECONDS
run asynchronously, failing after X seconds
(default=N/A)
-C, --check don't make any changes; instead, try to predict some
of the changes that may occur
-c CONNECTION, --connection=CONNECTION
connection type to use (default=smart)
-f FORKS, --forks=FORKS
specify number of parallel processes to use
(default=5)
-h, --help show this help message and exit
-i INVENTORY, --inventory-file=INVENTORY
specify inventory host file
(default=/etc/ansible/hosts)
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12. ANSIBLE CLI
-l SUBSET, --limit=SUBSET
further limit selected hosts to an additional pattern
--list-hosts outputs a list of matching hosts; does not execute
anything else
-m MODULE_NAME, --module-name=MODULE_NAME
module name to execute (default=command)
-M MODULE_PATH, --module-path=MODULE_PATH
specify path(s) to module library
(default=/usr/share/ansible)
-o, --one-line condense output
-P POLL_INTERVAL, --poll=POLL_INTERVAL
set the poll interval if using -B (default=15)
--private-key=PRIVATE_KEY_FILE
use this file to authenticate the connection
-s, --sudo run operations with sudo (nopasswd)
-U SUDO_USER, --sudo-user=SUDO_USER
desired sudo user (default=root)
-T TIMEOUT, --timeout=TIMEOUT
override the SSH timeout in seconds (default=10)
-t TREE, --tree=TREE log output to this directory
-u REMOTE_USER, --user=REMOTE_USER
connect as this user (default=vagrant)
-v, --verbose verbose mode (-vvv for more, -vvvv to enable
connection debugging)
--version show program's version number and exit
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13. ANSIBLE CLI
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14. ANSIBLE CLI
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15. INVENTORY
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16. INVENTORY
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17. PLAYBOOK
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18. PLAYBOOK
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19. ANSIBLE-PLAYBOOK CLI
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20. ANSIBLE-PLAYBOOK CLI
Usage: ansible-playbook playbook.yml
Options:
-k, --ask-pass ask for SSH password
-K, --ask-sudo-pass ask for sudo password
-C, --check don't make any changes; instead, try to predict some
of the changes that may occur
-c CONNECTION, --connection=CONNECTION
connection type to use (default=smart)
-D, --diff when changing (small) files and templates, show the
differences in those files; works great with --check
-e EXTRA_VARS, --extra-vars=EXTRA_VARS
set additional variables as key=value or YAML/JSON
-f FORKS, --forks=FORKS
specify number of parallel processes to use
(default=5)
-h, --help show this help message and exit
-i INVENTORY, --inventory-file=INVENTORY
specify inventory host file
(default=/etc/ansible/hosts)
-l SUBSET, --limit=SUBSET
further limit selected hosts to an additional pattern
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21. ANSIBLE-PLAYBOOK CLI
--list-hosts outputs a list of matching hosts; does not execute
anything else
--list-tasks list all tasks that would be executed
-M MODULE_PATH, --module-path=MODULE_PATH
specify path(s) to module library
(default=/usr/share/ansible)
--private-key=PRIVATE_KEY_FILE
use this file to authenticate the connection
--skip-tags=SKIP_TAGS
only run plays and tasks whose tags do not match these
values
--start-at-task=START_AT
start the playbook at the task matching this name
--step one-step-at-a-time: confirm each task before running
-s, --sudo run operations with sudo (nopasswd)
-U SUDO_USER, --sudo-user=SUDO_USER
desired sudo user (default=root)
--syntax-check perform a syntax check on the playbook, but do not
execute it
-t TAGS, --tags=TAGS only run plays and tasks tagged with these values
-T TIMEOUT, --timeout=TIMEOUT
override the SSH timeout in seconds (default=10)
-u REMOTE_USER, --user=REMOTE_USER
connect as this user (default=vagrant)
-v, --verbose verbose mode (-vvv for more, -vvvv to enable
connection debugging)
--version show program's version number and exit
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22. ANSIBLE-PLAYBOOK CLI
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23. MODULE
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24. COMMAND - EXECUTES A COMMAND ON A
REMOTE NODE
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25. COMMAND - EXECUTES A COMMAND ON A
REMOTE NODE
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26. COMMAND - EXECUTES A COMMAND ON A
REMOTE NODE
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27. COMMAND - EXECUTES A COMMAND ON A
REMOTE NODE
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28. COMMAND - EXECUTES A COMMAND ON A
REMOTE NODE
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29. SHELL - EXECUTE COMMANDS IN NODES
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30. SHELL - EXECUTE COMMANDS IN NODES
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31. SHELL - EXECUTE COMMANDS IN NODES
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32. SHELL - EXECUTE COMMANDS IN NODES
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33. SHELL - EXECUTE COMMANDS IN NODES
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34. APT - MANAGES APT-PACKAGES
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35. APT - MANAGES APT-PACKAGES
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36. APT - MANAGES APT-PACKAGES
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37. APT - MANAGES APT-PACKAGES
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38. APT - MANAGES APT-PACKAGES
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39. COPY - COPIES FILES TO REMOTE LOCATIONS
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40. COPY - COPIES FILES TO REMOTE LOCATIONS
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41. COPY - COPIES FILES TO REMOTE LOCATIONS
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42. SETUP - GATHERS FACTS ABOUT REMOTE
HOSTS
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43. SETUP - GATHERS FACTS ABOUT REMOTE
HOSTS
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44. REFERENCE
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45. REFERENCE
 Ansible is Simple IT Automation
 https://www.ansible.com/
 Ansible Documentation — Ansible Documentation
 http://docs.ansible.com/ansible/index.html
 What is Ansible? | Ansible Quick Start Video
 https://www.ansible.com/quick-start-video
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46. REFERENCE
 Getting Started with Ansible | Ansible.com
 https://www.ansible.com/get-started
 七分鐘掌握 Ansible 核心觀念 (7:15) | Software
Architecture School
 http://school.soft-
arch.net/courses/ansible/lectures/655359
 現代 IT 人一定要知道的 Ansible 自動化組態技巧 ·
GitBook
 https://www.gitbook.com/book/chusiang/automate-with-
ansible/details 46

47. Q&A
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48. QUESTION & ANSWER
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