Ansible: An Introduction to Automation - OLF 2017

Transcript

1. An Introduction to Automation Using Ansible to configure your deployment environment
2. claco bit.ly / olf2017-ansible claco claco claco
3. –Wikipedia “…the process of preparing and equipping a [resource] to allow to provide (new) services to its users” What is Ansible? “Provisioning”
4. –Me “Create some things” What is Ansible? “Provisioning”
5. –Wikipedia “…the automated arrangement, coordination, and management of computers systems, middleware, and services.” What is Ansible? “Orchestration”
6. –Me “Connect the things you created” What is Ansible? “Orchestration”
7. –Wikipedia “…a systems engineering process for establishing and maintaining consistency of a product’s performance, functional, and physical attributes with its requirements, design, and operational information throughout its life.” What is Ansible? “Configuration Management”
8. –Me “Configure the things you created” What is Ansible? “Configuration Management”
9. –Ansible “Deploy apps. Manage systems. Crush complexity. Ansible helps you build a strong foundation for DevOps” What is Ansible? “AUTOMATION FOR EVERYONE”
10. What Kinds of Things? • Cloud Resources: AWS, Rackspace, Azure, Google, Digital Ocean, OpenStack, VMWare, Servers, Containers, Storage • Networking: Cisco, Cumulous, F5, Juniper, OpenSwitch • Databases: MySQL, Postgresql, MS SQL. Mongo, Redis • Everything: Over 750 modules!
11. How Does It Work? • Agentless: No agent or client to install on remote resources* • Connect: SSH to resources, or run modules locally • Send Payload: SFTP/SCP modules to remote resources • Execute: Run the modules to perform desired actions • Report: Return output about the actions performed
12. Ansible Moving Parts • Inventory: Phonebook of resources you are going to manage • Variables: Options to control how things are managed • Modules: Reusable code designed to manage things • Tasks: Combine variables and modules into a unit of work • Roles: Combine multiple tasks into a reusable unit of work • Playbooks: Define how to run tasks and roles on inventory • Vault: Encrypt any or all of the above things to protect secrets
13. Ansible Moving Parts • Inventory: web_server_1 (10.10.10.10) • Variables: apache_version (2.3.1), web_site_port (80) • Modules: apt, template, service • Tasks: apt (install), template (configure site), service (restart) • Roles: web_server (run apt, template, service with variables) • Playbooks: run web_server role on web_server_1 • Vault: encrypt ssl private key or .htaccess file contents
14. Getting Started Installing Ansible
19. Ansible Adhoc Commands Run commands on inventory items
22. Ansible Configuration ansible.cfg
27. Inventory Adding Hosts and Inventory Variables
44. Inventory Host Variables: Files and Directories
50. Inventory Groups
60. Inventory Group Variables: Files and Directories
65. Vault Keeping Secrets
77. Playbooks Combining Adhoc Commands
91. Roles (Galaxy) Group Related Tasks
101. Roles Default Variables
105. Roles Templates
108. Roles Tasks
121. Tangent Alert! Local Apt Cache Server
125. Roles Dependencies
137. Tags Label Tasks
143. Includes Reuse Things
150. Conditionals Skip Hosts (Limit)
154. Conditionals When Statements
162. Tags Label Playbooks
165. Tags Label Roles
169. Complex Magic Move Root File System
180. To The Cloud Provision, Orchestrate, and Configure
191. Automate All The Things! Thank You!
192. http://docs.ansible.com/ansible/ http://docs.openstack.org/developer/openstack-ansible/ https://github.com/claco/claco.network bit.ly / flight-ansible http://docs.openstack.org/project-deploy-guide/openstack-ansible/newton/ https://github.com/openstack/openstack-ansible