ansible tower | docker | cisco aci
Post on 31-Jul-2015
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Copyright © 2015 World Wide Technology, Inc. All rights reserved.
Software-Defined Networking
Ansible Tower | Docker | ACIATC Core Builders Meeting – 22 May 2015
Joel W. KingTechnical Solutions ArchitectEnterprise Networking SolutionsEngineering and Innovations
Ansible
• Ansible is an open source automation tool.• Designed to be easy for anyone to understand and learn. • Does not require custom scripting or code….
… however I’ve written code to manage Cisco ACI fabrics.
APIC
Ansible Tower
• Ansible has two commercial offerings-• Ansible Consulting & Training Services• Ansible Tower
• Ansible Tower – Web GUI front-end to open source Ansible code• ROLE-BASED ACCESS CONTROL• JOB SCHEDULING• PUSH-BUTTON JOB RUNS• AUDIT TRAIL• PULL FROM SOURCE CONTROL
Ansible Tower Demo
• Playbooks can be stored / version controlledin GitHub.
• Playbook downloadsa fileto multiplehostsin the ATC
SDNControllersin ATC
management network 10.255.40.207 10.255.40.78
SCM Update
Docker
• What is Docker?• Open platform for developing, shipping, and running applications.• Separates applications from the infrastructure.
• How does Docker do this?• Combines a container virtualization platform,• Plus software to build apps into containers, distribute / ship, and deploy.
• Containers are• Isolated and secure application platform,• OS image + user-added files + meta-data,• Similar to a directory,• Hold everything for an app to run.
clientserverACI
demofabric
app
Netcat
• Tower initiates Python modulesto apply policy to tenant in ACIfabric.
• Tower initiates Python applicationinstalled in Docker containeron client machine.
Ansible Tower – Apply ACI policy and run Docker app
x-docker-client
x-docker-server-1
.10
.1
.1
.10
192.0.2.0 / 24TEST-NET-1
198.51.100.0 / 24TEST-NET-2
Bridge DomainTEST-NET-2
Bridge DomainTEST-NET-1
management network policy
app
Key take-away
• Networks increasingly are operated with combination of open source software and vendor hardware and software plus user written software.• Git / GitHub – open source version control• Ansible – open source automation tool• Docker - open platform to build, ship, and run distributed applications
• Open source enterprise offerings• Ansible Tower – Commercial GUI front-end to Ansible (also training)• Docker Inc. - Support, training, and professional services
• Vendor Hardware and Software –• Cisco Application Centric Infrastructure (ACI)
• User written software• aci_install_config.py Python module called by Ansible to configure fabric using ACI controller (APIC)• aci_gather_facts.py Python module called by Ansible to query APIC
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