Habitat Package
Daiana Parthemore
Chef Habitat is a workload-packaging, orchestration, and deployment system that allows you to build, package, deploy, and manage applications and services without worrying about which infrastructure your application will deploy on, and without any rewriting or refactoring if you switch to a different infrastructure.
You can store application plans on the Chef Habitat Builder SaaS where the Chef Habitat community can view and access them. You can also deploy the on-prem version of Chef Habitat Builder where you can store and maintain your apps in a secure environment.
A Habitat Package is an artifact that contains the application codebase, lifecycle hooks, and a manifest that defines build and runtime dependencies of the application.The package is bundled into a Habitat Artifact (.HART) file, which is a binary distribution of a given package built with Chef Habitat.The package is immutable and cryptographically signed with a key so you can verify that the artifact came from the place you expected it to come from.Artifacts can be exported to run in a variety of runtimes with zero refactoring or rewriting.
A plan is the set of instructions, templates, and configuration files that define how you download, configure, make, install, and manage the lifecycle of the application artifact. The plan is defined in the habitat directory at the root of your project repository.
The habitat directory includes a plan file (plan.sh for Linux systems or plan.ps1 for Windows), a default.toml file, an optional config directory for configuration templates, and an optional hooks directory for lifecycle hooks. You can create this directory at the root of your application with hab plan init.
In the Supervisor you can define topologies for you application, such as leader-follower or standalone, or more complex applications that include databases. The supervisor also allows you to inject tunables into your application. Allowing you to defer decisions about how your application behaves until runtime.
Chef Habitat allows you to build and package your applications and deploy them anywhere without having to refactor or rewrite your package for each platform.Everything that the application needs to run is defined, without assuming anything about the underlying infrastructure that the application is running on.
This will allow you to repackage and modernize legacy workloads in-place to increase their manageability, make them portable, and migrate them to modern operating systems or even cloud-native infrastructure like containers.
You can also develop your application if you are unsure of the infrastructure your application will run on, or in the event that business requirements change and you have to switch your application to a different environment.
Example:
I created a package called "Reeact-mx" but later realized I was using the wrong naming convention, so I renamed it to "React_mx". The old package with a "-" character may be confusing for people trying to use it as a dependency.
You can use hab pkg delete to delete a package as long as that package is not in the stable channel and there are no other packages that take a dependency on that package. Once you successfully perform a hab pkg delete on a package, it is no longer searchable.
From any cloud to any edge, Habitat is a workload packaging, orchestration, and deployment system that allows you to automate the management applications across hybrid- and multi-cloud architectures.
Chef Habitat is an open source solution that provides automation capabilities for defining, packaging and delivering applications to almost any environment regardless of operating system or deployment platform. Habitat enables DevOps and application teams to:
Chef Habitat is a patented automation tool that enables companies to apply a consistent approach to application definition, packaging and delivery across all applications and environments. Scaling continuous delivery requires consistent patterns that are not tool or platform specific. By applying an as-code approach to application definition and packaging Chef is able to free application teams from the trappings of underlying tooling and platforms. For organizations looking to scale continuous delivery across all their applications and platforms Chef Habitat is the clear choice.
Habitat packages the Application Manifest into an immutable artifact called the Habitat Application Artifact (.HART) file. Artifacts can be exported to run in a variety of runtimes with zero refactoring or rewriting.
The Habitat Supervisor is a light-weight agent that runs on/in a server, virtual machine, or container and manages the application according to the instructions defined in the Habitat Plan. Tasks are defined via pre-set scripts called lifecycle hooks that are included as part of the application definition.
Chef Habitat explicitly models, defines and isolates dependencies as code and stores them in a common codebase along with the application binaries. By identifying and defining everything an application needs to be built, run and maintained as part of the development phase, failure identification is shifted-left from run-time to build-time. Chef Habitat then validates through each stage of the delivery pipeline that what was defined, packaged and configured is delivered successfully. Delivery teams can be confident that what they build, deploy and manage will behave consistently in any runtime environment.
Chef Habitat is 100% open source and users have access to hundreds of pre-built plans to get up and running quickly. These include common application dependencies such as .NET, jdk or gcc, utilities like Maven, Gradle, or NuGet, and middleware like Tomcat, HAProxy, or Memcached. Additionally, Chef Habitat supports scaffolding for languages like Ruby, Go, and Node.JS to further ease the build and install process.
Chef Habitat packages the Application Manifest into an immutable artifact called the Habitat Application Artifact (.HART) file. By bundling dependencies, lifecycle events, and compiled code into a single artifact, Habitat greatly simplifies CI/CD pipelines in any environment by providing a single means to build or promote an app regardless of its language or target platform. Chef Habitat simplifies channel management, supports roll-backs, roll-forwards and multiple deployment patterns (Canary, Blue/Green, All At Once, or Feature Flag).
Chef Habitat artifacts can be easily exported to run in a variety of runtimes. Available export formats include tarball, Docker, or directly to container registries (Azure Container Registry, Amazon Elastic Container Registry, or Docker Hub).
Isolate dependencies into atomic plans and then build an Application Manifest which links to all direct & transitive runtime dependencies and provides tuneable instructions to install and run the app.
Everything you need to get started packaging applications is included with the Chef Habitat Command-Line Interface (CLI). The Chef Habitat installer CLI is supported on Linux, Mac, and Windows. Read detailed instructions here.
Chef Habitat reduces the footprint and attack surface area of an application by ensuring only the dependencies needed to run the application are included in any final build. The Habitat Studio is a cleanroom environment used to package and validate application artifacts (.HART files).
The Chef Habitat Builder provides a set of enterprise-class functionality that includes package storage, search, and automated API enabled services. Application binaries versioned and stored along with the corresponding Habitat Artifact. Clients have the option of leveraging the SaaS or on-premises version of Builder.
The Plan provides the cities of Gilroy, Morgan Hill, and San Jos, the County of Santa Clara, the Santa Clara Valley Transportation Authority, the Santa Clara Valley Water District and the Habitat Agency with permits for project-specific impacts to Habitat Plan species. The County and cities can extend their permits to activities on private property through a standardized and streamlined permitting process. The Plan removes the need to obtain Wildlife Agency approvals and reduces the number and scope of required biological studies. Fees are used to purchase lands for habitat conservation and carry out other Plan implementation tasks.
PUBLIC AGENCIES PROCESS
The Co-Permittees have been issued permits for take of covered species under the Habitat Plan. For projects conducted by a Co-Permittee, the Co-Permittee is responsible for assuring that the project conforms to the requirements of the Habitat Plan, following the process for utilizing take authorization described in Chapter 6, Section 6.7.1 Evaluation Process for Permittee Projects. View materials here.
PARTICIPATING SPECIAL ENTITIES PROCESS
The Participating Special Entity will submit a complete application for the proposed activity directly to the Habitat Agency with copies to the local jurisdiction in which the project occurs, and the Wildlife Agencies. This application will contain the following components.
Consultation Package Builder (CPB) replaces and improves on the original Impact Analysis by providing an interactive, step-by-step process to help you prepare a full consultation package leveraging U.S. Fish and Wildlife Service data and recommendations, including conservation measures designed to help you avoid or minimize effects to listed species.
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