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Australian OpenStack User Group August 2012: Chef for OpenStack
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Australian OpenStack User Group August 2012: Chef for OpenStack


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Chef introduction and overview of Chef for OpenStack

Chef introduction and overview of Chef for OpenStack

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  • 1. Chef for OpenStack Matt Ray IRC/Twitter/GitHub: mattray
  • 2. Deploying and ManagingOpenStack is not simple.
  • 3. Chef makes it easier.
  • 4. See NodeApplication Server
  • 5. See NodesApplication ServerApplication Database
  • 6. See Nodes GrowApplication ServerApplication Databases
  • 7. See Nodes GrowApplication ServersApplication Databases
  • 8. See Nodes GrowLoad BalancerApplication ServersApplication Databases
  • 9. See Nodes GrowLoad Balancers Application ServersApplication Databases
  • 10. See Nodes GrowLoad Balancers Application ServersApplication Database CacheApplication Databases
  • 11. Tied together with ConfigLoad Balancers Application ServersApplication Database CacheApplication Databases
  • 12. Infrastructure is a SnowflakeLoad Balancers Application ServersApplication Database CacheFloating IP?Application Databases
  • 13. Evolving Complexity Load Balancers ApplicationCache Application ServersNoSQL Database Cache Database Slaves Database
  • 14. Complexity Grows Quickly DC2DC1 DC3
  • 15. And it Continues to EvolveTell me about Chef!
  • 16. Chef is Infrastructure as Code • Programmatically provision and configure • Treat like any other code base • Reconstruct business from code repository, data backup, and bare metal resources.
  • 17. Nodes • Chef-Client generates configurations directly on nodes from their run list • Reduce management complexity through abstraction • Store the configuration of your programs in version control
  • 18. Collections of Resources• Networking • Routes • Users• Files • Groups• Directories • Tasks• Symlinks • Packages• Mounts • Software • Services • Configurations • Other Stuff
  • 19. Declarative Interface to Resources• Define policy• Say what, not how• Pull not Push
  • 20. Ruby!extra_packages = case node[platform] when "ubuntu","debian" %w{ ruby1.8 ruby1.8-dev rdoc1.8 ri1.8 libopenssl-ruby } endextra_packages.each do |pkg| package pkg do action :install endend
  • 21. Recipes and Cookbooks• Recipes are collections of Resources• Cookbooks contain recipes, templates, files, custom resources, etc• Code re-use and modularity• Hundreds already on
  • 22. Search• Search for nodes with Roles• Find configuration data• IP addresses• Hostnames• FQDNs
  • 23. Pass Results to Templatespool_members = search("node","role:webserver”)template "/etc/haproxy/haproxy.cfg" do source "haproxy-app_lb.cfg.erb" owner "root" group "root" mode 0644 variables :pool_members => pool_members.uniq notifies :restart, "service[haproxy]"end
  • 24. Pass Results to Templates# Set up application listeners here.listen application balance roundrobin <% @pool_members.each do |member| -%> server <%= member[:hostname] %> <%= member[:ipaddress] %>:> weight 1 maxconn 1 check <% end -%><% if node["haproxy"]["enable_admin"] -%>listen admin mode http stats uri /<% end -%>
  • 25. So when thisGraphite Nagios Jboss App Memcache Postgres Slaves Postgres Master
  • 26. Becomes thisGraphite Nagios Jboss App Memcache Postgres Slaves Postgres Master
  • 27. Updates can be automaticGraphite Nagios Jboss App Memcache Postgres Slaves Postgres Master
  • 28. Count the resources • Load balancer config Graphite Nagios • Nagios host ping • Nagios host ssh Jboss App • Nagios host HTTP • Nagios host app health Memcache • Graphite CPU • Graphite Memory Postgres Slaves • Graphite Disk • Graphite SNMP • Memcache firewall• 12+ resource changes for 1 node addition • Postgres firewall Postgres authZ config
  • 29. Build anything • Simple internal applications • Complex external applications • Workstations • Hadoop clusters • IaaS infrastructure • PaaS infrastructure • SaaS applications • Storage systems • You name it
  • 30. And manage it simply• Automatically reconfigure everything• Linux, Windows, Unixes, BSDs• Load balancers• Metrics collection systems• Monitoring systems• Cloud migrations become trivial
  • 31. The Chef Community• Apache License, Version 2.0• 800+ Individual contributors• 150+ Corporate contributors • HP, Dell, Rackspace, VMware, Joyent, Calxeda, Heroku, SUSE and many more• 500+ cookbooks•
  • 32. Whats Out There?Chef for OpenStack Resources
  • 33. Chef for OpenStack: Why• Community for the automated deployment and management of OpenStack• Reduce fragmentation and encourage collaboration• Deploying OpenStack is not "secret sauce"• Project not a product• Apache 2 license
  • 34. Chef for OpenStack: What• Chef Repository for Deploying OpenStack• Cookbooks • Keystone • Glance • Nova • Horizon • Swift• Knife OpenStack
  • 35. Chef for OpenStack: Where•• openstack• #openstack-chef on•• • keystone, glance, nova, horizon, swift•
  • 36. Chef for OpenStack: Who
  • 37. Chef for OpenStack: When• Essex is working • KVM • Ubuntu 12.04 • more to come!• Folsom about to start • Milestones for features• Grizzly and forward
  • 38. Deploying OpenStack• Chef ties it all together automatically• Scaling changes how we deploy• Interchangeable components• Configurations shared, supported & documented• Licensing makes it available to everyone
  • 39. Rackspace Cloud Builders• Source of current cookbooks••
  • 40. knife openstack
  • 41. knife openstack$ knife openstackAvailable openstack subcommands: (for details, knife SUB-COMMAND --help)** OPENSTACK COMMANDS **knife openstack flavor list (options)knife openstack image list (options)knife openstack server create (options)knife openstack server delete SERVER [SERVER] (options)knife openstack server list (options)
  • 42. knife openstack flavor list$ knife openstack flavor listID Name Virtual CPUs RAM Disk1 m1.tiny 1 512 MB 0 GB2 m1.small 1 2048 MB 20 GB3 m1.medium 2 4096 MB 40 GB4 m1.large 4 8192 MB 80 GB5 m1.xlarge 8 16384 MB 160 GB
  • 43. knife openstack image list$ knife openstack image listID Name13 natty-server-cloudimg-amd6412 natty-server-cloudimg-amd64-kernel15 oneiric-server-cloudimg-amd6414 oneiric-server-cloudimg-amd64-kernel
  • 44. knife openstack server createknife openstack server create --node-name ko1 --flavor 1 --image 13 -S trystack
  • 45. $ ssh -i ~/.ssh/trystack.pem ubuntu@ authenticity of host ( cant be established.RSA key fingerprint is 0c:d8:3e:34:d1:de:c4:ee:5f:bc:b5:89:11:0d:73:e0.Are you sure you want to continue connecting (yes/no)? yesWarning: Permanently added (RSA) to the list of known hosts.Welcome to Ubuntu 11.04 (GNU/Linux 2.6.38-13-virtual x86_64) * Documentation: System information as of Thu Feb 16 23:43:29 UTC 2012 System load: 0.08 Processes: 63 Usage of /: 40.8% of 1.35GB Users logged in: 0 Memory usage: 6% IP address for eth0: Swap usage: 0%---------------------------------------------------------------------<snip>Get cloud support with Ubuntu Advantage Cloud Guest programs included with the Ubuntu system are free software;the exact distribution terms for each program are described in theindividual files in /usr/share/doc/*/copyright.Ubuntu comes with ABSOLUTELY NO WARRANTY, to the extent permitted byapplicable law.To run a command as administrator (user "root"), use "sudo <command>".See "man sudo_root" for details.ubuntu@ko1:~$
  • 46. Chef for Infrastructure Portability• knife ec2• knife rackspace• knife hp• knife openstack• ... and many others
  • 47. Chef for OpenStack Roadmap• Documentation• Hypervisors (LXC, Xen, Hyper-V)• Databases (PostgreSQL)• Operating Systems (RHEL)• HA Configuration• Quantum• Cinder
  • 48. Chef for OpenStack Ecosystem• Cookbooks reusable outside of OpenStack• Community Events• Librarian• Spiceweasel• pxe_dust• Crowbar
  • 49. Thanks! Matt Ray IRC/Twitter/GitHub: mattray