Uploaded byCumulus Networks
Manage your switches like servers
The document discusses a presentation by Puppet Labs and Cumulus Networks, emphasizing the importance of treating network switches like servers for better management and reliability in IT environments. It highlights Puppet Enterprise's features such as automation, simulation, and change management to enhance collaboration between sysops and netops. Additionally, it introduces Cumulus Linux, a Debian-based OS for network switches, advocating for a shift towards unified infrastructure management and a faster deployment cycle.
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Similar to Manage your switches like servers
Manage your switches like servers
- 1. v “Manage Your SwitchesLike Servers” Puppet Labs and Cumulus Networks Presented By: Carl Caum and Leslie Carr September 24th, 2015
- 2. Who is Carl? § TechnicalMarketing Manager • @ccaum • Recovering sysadmin • Interested in continuous delivery and IT cultures that promote empathy cumulusnetworks.com
- 3. The Competing Pressuresof IT cumulusnetworks.com 3 Reliability Speed
- 4. cumulusnetworks.com 4 of managersare not satisfied with the speed at which IT deploys 60% of IT outages are due to unexpected configuration changes 70%
- 5. Main Steps ofPuppet Enterprise 5 service { 'ssh': ensure => running, enable => true, } Choose from thousands of pre-built modules Simulate Enforce ReportDefine cumulusnetworks.com
- 6. The Puppet EnterpriseApproach cumulusnetworks.com 6 DEFINE AUTOMATE operating system resources · virtual machines · clouds · network devices · storage devices · applications
- 7. Puppet Enterprise Steps cumulusnetworks.com7 Choose from thousands of pre- built modules. Define the desired state using a powerful, declarative language. Simulate Enforce ReportDefine
- 8. Puppet Enterprise Steps cumulusnetworks.com8 Simulate Enforce ReportDefine Simulate changes before you deploy them.
- 9. Puppet Enterprise Steps cumulusnetworks.com9 Simulate Enforce ReportDefine Enforce changes and remediate configuration drift
- 10. Puppet Enterprise Steps cumulusnetworks.com10 Simulate Enforce ReportDefine Gain insight into your infrastructure.
- 11. Puppet Enterprise forNetworking cumulusnetworks.com 11 Networking before DevOps • Siloed teams • Siloed tooling and processes • Slow collaboration and information sharing • Different processes and tasks for provisioning vs ongoing change management
- 12. Puppet Enterprise forNetworking cumulusnetworks.com 12 Collaborative Networking • Unify change insight & management for all infrastructure • Enhance collaboration between SysOps and NetOps
- 13. Puppet Enterprise forNetworking cumulusnetworks.com 13 Puppet for Networking • Share infrastructure code between all of IT • Eliminate differences between initial configuration and ongoing change management • Unify application deployments that span compute and network
- 14. Puppet Enterprise forNetworking cumulusnetworks.com 14 App Day One • Configuration of authentication, SNMP, NTP, syslog Day Two • Configuration of interfaces, port channels, QoS policies Day Three • Application deployments (dynamic routes, VLANs, change audits) • Model network dependencies and deploy in concert with compute changes • Holistically monitor app deployments in Puppet Configuration Manager DB Network AppApp
- 15. Who is Leslie? § OperationsEngineer • @lesliegeek • Google • Craigslist • Twitter • Wikimedia Foundation (Wikipedia) cumulusnetworks.com
- 16. Cumulus Networks atPuppetConf 2015 cumulusnetworks.com 16 See Cumulus Networks Leslie Carr speak on “Why NetDevOps?” at PuppetConf 2015 1:30pm, Friday, October 9th
- 17. What is CumulusLinux? § Cumulus® Linux® • Debian based distribution for Network switches Cumulus Philosophy • Manage your network switch as a server • Use existing linux tools to configure network switches • Current release — Based on Debian wheezy cumulusnetworks.com
- 18. Single-Vendor blob - Constrainedinnovation - High margins for vendors - Slow feature dev cycles Great Physical Networking with the Cumulus ® Linux ® OS 18 HARDWARE APP APPAPP OPERATING SYSTEM Customer Choice - Vibrant DevOps community - Best-of-breed vendors - Rapid deployment hardware operating system app app app NSX cumulusnetworks.com
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- 21. Traditional Network GearProcess • Comes preinstalled with (old) software • Telnet or serial into box • TFTP new image • Enable SSH (sometimes with passwords!) • Copy/paste configuration • Automation usually restricted to Perl, TCL, and expect scripts cumulusnetworks.com
- 22. Normal Server Installation • Reboot and bios with PXE automatically catches • TFTP boot image • New image pulled over via normal means (usually webserver, sometimes TFTP) • Pre/post installation scripts runs • Automation software manages configuration and administration cumulusnetworks.com
- 23. Network OS installerdiscovery and execution • Like a pre-installed BIOS, PXE, and kickstarter in one • Implemented through Linux kernel with BusyBox Donated to the Open Compute Project (OCP) http://www.onie.org ONIE cumulusnetworks.com
- 24. Comparison bare metal server ServerOS app app app BIOS and PXE bare metal switch Network OS app app app Boot Loader and ONIE Similar to installing a server OS using PXE Network OS Boot Loader and ONIE boot into Boot Loader and ONIE boot into ONIE looks for and installs network OS image cumulusnetworks.com
- 25. Cumulus Linux OSInstallation with ONIE cumulusnetworks.com 25 § Look for installer (“discover”) • Locally, e.g. USB if available • Over the network on eth0 • DHCP, IPv6 neighbor, TFTP § Search for file name and execute • onie-‐installer-‐* 1 2 Cumulus Linux OS image
- 26. During the DHCPprocess over eth0 (management interface), Cumulus Linux will request DHCP option 239. This option is used to specify the custom provisioning script. It will also send the following headers: Header Value Example -‐-‐-‐-‐-‐-‐ -‐-‐-‐-‐-‐ -‐-‐-‐-‐-‐-‐-‐ User-‐Agent CumulusLinux-‐AutoProvision/0.4 CUMULUS-‐ARCH CPU architecture powerpc CUMULUS-‐BUILD 1.5.1-‐5c6829a-‐201309251712-‐final CUMULUS-‐LICENSE-‐INSTALLED Either 0 or 1 1 CUMULUS-‐MANUFACTURER dni CUMULUS-‐PRODUCTNAME et-‐7448bf CUMULUS-‐SERIAL XYZ123004 CUMULUS-‐VERSION 1.5.1 CUMULUS-‐PROV-‐COUNT 0 CUMULUS-‐PROV-‐MAX 32 ZTP – Zero Touch Provisioning cumulusnetworks.com
- 27. § Script must containCUMULUS-‐AUTOPROVISIONING Can be in the following languages : • Perl • Python • Ruby • Shell ZTP(Zero Touch Provisioning) Execution cumulusnetworks.com
- 28. ZTP Example withPuppet 1 #!/bin/bash 2 3 function error() { 4 echo -‐e "e[0;33mERROR: Provisioning failed running $BASH_COMMAND at line $BASH_LINENO of $(basename $0) e[0m" >&2 5 exit 1 6 } 7 trap error ERR 8 # Allow Cumulus testing repo 9 sed -‐i /etc/apt/sources.list -‐e 's/^#s* (deb.*testing.*)$/1/g' 10 11 # Upgrade and install Puppet 12 apt-‐get update -‐y 13 apt-‐get upgrade -‐y 14 apt-‐get install puppet -‐y 15 16 echo "Configuring puppet" | wall -‐n 17 sed -‐i /etc/default/puppet -‐e 's/ START=no/START=yes/' 18 19 service puppet restart 20 21 # CUMULUS-‐AUTOPROVISIONING 22 23 exit 0 cumulusnetworks.com
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- 30. § Because Debian based,we can do everything with Puppet Enterprise • users • interface configuration • routing software (Quagga) configuration Puppet cumulusnetworks.com
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- 32. How can wemake your life better? Make Life Even Better cumulusnetworks.com
- 33. Warning - smallhard drive and limited processing power -- not recommended for long term Scenario - installing new rack with limited connectivity * make switch puppetmaster Interim Puppet Server! cumulusnetworks.com
- 34. Example Topology leaf 1leaf 2 swp1 - 4 swp1 - 4 Puppetmaster cumulusnetworks.com
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- 37. Puppet Modules andOther Resources cumulusnetworks.com 37 Puppet: • Solutions Page: https://puppetlabs.com/solutions/cumulus • Puppet Modules: https://forge.puppetlabs.com/cumuluslinux Cumulus: • Puppet demo on Cumulus Workbench and other materials http://cumulusnetworks.com/solutions/data-center- automation/puppet/
- 38. § PTM • https://github.com/CumulusNetworks/ptm ExampleCode • https://github.com/LeslieCarr/puppet-presentation Cumulus Open Source • http://oss.cumulusnetworks.com Twitter • @lesliegeek Find out more! cumulusnetworks.com
- 39. The Building Blocks § CumulusVX https://cumulusnetworks.com/cumulus-vx/ § Cumulus Workbench https://cumulusnetworks.com/cw/ § Cumulus Linux http://cumulusnetworks.com/cumulus-linux/overview/ 39 Prototype TestAutomate Deploy { Virtual Appliance } { Testing in the Cloud } { The Real Deal } cumulusnetworks.com
- 40. Cumulus Networks atPuppetConf 2015 cumulusnetworks.com 40 See Cumulus Networks Leslie Carr speak on “Why NetDevOps?” at PuppetConf 2015 1:30pm, Friday, October 9th
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- 42. © 2015 CumulusNetworks. Cumulus Networks, the Cumulus Networks Logo, and Cumulus Linux are trademarks or registered trademarks of Cumulus Networks, Inc. or its affiliates in the U.S. and other countries. Other names may be trademarks of their respective owners. The registered trademark Linux® is used pursuant to a sublicense from LMI, the exclusive licensee of Linus Torvalds, owner of the mark on a world-wide basis. § Thank You! cumulusnetworks.com 42 Unleashing the Power of Open Networking