Upgrade to Pro — share decks privately, control downloads, hide ads and more …

Application Automation & Containerization With ...

Application Automation & Containerization With Habitat

Habitat builds and manages modern applications following the practices and principles of modern application teams. Build applications of any flavor, from microservices to traditional applications. Deploy applications in any operational environment from bare metal to containers. Habitat provides consistent, repeatable, auditable applications that lower operational complexity and simplify development workflows.

This hands-on workshop is for anyone involved in building, deploying, or managing applications. The workshop will give you experience running and building applications with Habitat and describe the application-first approach that Habitat provides. Find out more at habitat.sh.

This workshop was offered at DevOpsDays Minneapolis 2017.

Nathen Harvey

July 26, 2017
Tweet

More Decks by Nathen Harvey

Other Decks in Technology

Transcript

  1. • 1515 – Welcome! • 1530 - Modern applications, modern teams • 1545

    - Running a Habitat Application • 1630 - Next steps and wrap-up Agenda
  2. • Describe Habitat • Run an application with Habitat • Join the Habitat

    Community • Share your experience Goals for today
  3. Heterogeneity is the #1 stumbling block to velocity. Sprawl of

    management tools is the biggest challenge facing modern IT teams. Current approaches start upside-down: with the OS and not the app. The core of the problem: application management
  4. Runtime Concerns •  Application supervision •  Service discovery •  Application

    configuration •  Topology •  Updates •  Orchestration
  5. $ Start the Supervisor ∵ Missing package for core/hab-sup/0.26.1 »

    Installing core/hab-sup/0.26.1 ↓ Downloading core/hab-sup/0.26.1/20170715031552 2.18 MB / 2.18 MB - [=======================] 100.00 % 70.60 MB/s ☛ Verifying core/hab-sup/0.26.1/20170715031552 ... ★ Install of core/hab-launcher/4435/20170715015238 complete with 1 new packages installed. hab-sup(MR): Supervisor Member-ID 0d15afc1907e42afb3c09bcb155e8129 hab-sup(MR): Starting gossip-listener on 0.0.0.0:9638 hab-sup(MR): Starting http-gateway on 0.0.0.0:9631 sudo hab sup run
  6. $ Start Java Application sudo hab sup load learn/national-parks hab-sup(PK):

    learn/national-parks not found in local package cache, installing from https://willem.habitat.sh/v1/depot » Installing learn/national-parks ↓ Downloading learn/national-parks/0.1.5/20170407081316 5.75 MB / 5.75 MB | [======================] 100.00 % 100.34 MB/s ☛ Verifying learn/national-parks/0.1.5/20170407081316 ...
  7. $ Meanwhile, in the supervisor output hab-sup(MR): Supervisor Member-ID 0d15afc1907e42afb3c09bcb155e8129

    hab-sup(MR): Starting gossip-listener on 0.0.0.0:9638 hab-sup(MR): Starting http-gateway on 0.0.0.0:9631 hab-sup(MR): Starting learn/national-parks hab-sup(MR): Unable to start learn/national-parks, hab-sup(SS)[src/manager/ service/spec.rs:188:23]: Missing required bind(s), database
  8. $ Load MongoDB into the Supervisor sudo hab sup load

    learn/mongodb hab-sup(MN): The learn/mongodb service was successfully loaded
  9. $ Meanwhile, in the supervisor output hab-sup(MR): Starting learn/mongodb mongodb.default(SR):

    Hooks recompiled default(CF): Updated mongod.conf f9886a510442a32e91d38a79b0baad2a4bb589ba36fed74e2ea3493d517d8bd5 default(CF): Updated mongos.conf 8c3e4cd2f3cdd7cd922ce3b529f93672f3af8274e5f6d462a5f8824c25bbbe18 mongodb.default(SR): Configuration recompiled mongodb.default(SR): Initializing mongodb.default(SV): Starting service as user=hab, group=hab mongodb.default(O): note: noprealloc may hurt performance in many applications
  10. $ Reload Java Application sudo hab sup load learn/national-parks --bind

    database:mongodb.default hab-sup(MR): Starting learn/national-parks ... national-parks.default(SR): Initializing national-parks.default hook[init]:(HK): Seeding Mongo Collection ... national-parks.default hook[init]:(HK): 2017-07-25T21:16:09.524+0000 Failed: error connecting to db server: no reachable servers national-parks.default hook[init]:(HK): 2017-07-25T21:16:09.524+0000 imported 0 documents national-parks.default(HK): Initialization failed! 'init' exited with status code 1
  11. What are the tunables? [mongod.net] bind_ip = "127.0.0.1" ipv6 =

    false ... [mongod.security] authorization = "disabled" cluster_auth_mode = "keyFile" javascript_enabled = true key_file = "" ... $ sudo hab sup config learn/mongodb
  12. [mongod.net] bind_ip = "127.0.0.1" bind_ip = "0.0.0.0" ipv6 = false

    ... [mongod.security] authorization = "disabled" cluster_auth_mode = "keyFile" cluster_auth_mode = "" javascript_enabled = true ... Edit the mongodb.toml - + - +
  13. $ Change the configuration for MongoDB sudo hab config apply

    --peer 127.0.0.1 mongodb.default \ 1 mongodb.toml
  14. Applying Configuration sudo hab config apply --peer 127.0.0.1 mongodb.default 1

    mongodb.toml •  peer - hostname or IP address of a running supervisor •  mongodb.default - the service group •  1 - the incarnation of this configuration •  mongodb.toml - the file with the new configuration
  15. $ Change the configuration for MongoDB ∵ Missing package for

    core/hab-butterfly/0.26.1 » Installing core/hab-butterfly/0.26.1 ↓ Downloading core/hab-butterfly/0.26.1/20170715032942 1.14 MB / 1.14 MB / [=======================] 100.00 % 65.20 MB/s ☛ Verifying core/hab-butterfly/0.26.1/20170715032942 ... » Applying configuration for mongodb.default incarnation 1 Ω Creating service configuration ✓ Verified this configuration is valid TOML ↑ Applying to peer 127.0.0.1:9638 ★ Applied configuration sudo hab config apply --peer 127.0.0.1 mongodb.default \ 1 mongodb.toml
  16. $ Meanwhile, in the supervisor output mongodb.default(SR): Hooks recompiled default(CF):

    Updated mongod.conf 12a29a9de79166f30aa87640bc4ba4a88b6dc4d4641cf0d6ed00e179229d576f mongodb.default(SR): Configuration recompiled
  17. $ Meanwhile, in the supervisor output national-parks.default(SR): Hooks recompiled ...

    Deployment of web application directory /hab/pkgs/core/ tomcat8/8.5.9/20170215223900/tc/webapps/ROOT has finished in 30 ms national-parks.default(O): 25-Jul-2017 21:21:13.399 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler [http- nio-8080] national-parks.default(O): 25-Jul-2017 21:21:13.404 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler [ajp-nio-8009] national-parks.default(O): 25-Jul-2017 21:21:13.405 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in 6850 ms
  18. Runtime Concerns •  Application supervision •  Service discovery •  Application

    configuration •  Topology •  Updates •  Orchestration
  19. Unload the services hab-sup(SV): national-parks.default - Shutdown method: Graceful Termination

    hab-sup(SV): national-parks.default - process 2457 died with exit code 143 hab-sup(SV): national-parks.default - Service exited $ sudo hab sup unload learn/national-parks
  20. Unload the services hab-sup(SV): mongodb.default - Shutdown method: Graceful Termination

    hab-sup(SV): mongodb.default - process 2572 died with exit code 0 hab-sup(SV): mongodb.default - Service exited $ sudo hab sup unload learn/mongodb
  21. What’s Next? •  Use a provided Habitat development environment, or

    install Habitat locally •  Join the Habitat Slack Team - http://slack.habitat.sh/ •  Work through the tutorial at https://www.habitat.sh/tutorials/ •  Explore Habitat packages on the depot - https://app.habitat.sh/ •  Explore the Habitat projects - https://github.com/habitat-sh •  Read Habitat Blog posts - https://www.habitat.sh/blog/