Michael Crenshaw, lead maintainer for Argo CD, and Zach Aller, lead maintainer for Argo Rollouts, dive into the fascinating journey of Argo from its beginnings at Applatix to its CNCF graduation. They discuss how Argo transforms continuous delivery in Kubernetes, highlighting advanced deployment strategies like blue-green and canary releases. The duo also emphasizes the importance of community engagement and governance, while introducing innovative tools like Height to optimize project management. It's an insightful look at enhancing CI/CD processes!
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Quick takeaways
Argo was developed to improve workflow orchestration and continuous delivery in Kubernetes, originally addressing the limitations of handling long-running processes.
The suite comprises four key tools—Argo Workflows, Argo CD, Argo Rollouts, and Argo Events—each targeting distinct areas of continuous integration and delivery for enhanced operational efficiency.
Deep dives
Origins and Development of Argo
The inception of Argo was driven by the need for better orchestration of pipelines within Kubernetes, which effectively handles stateless applications but struggles with long-running processes. Initially developed by a startup called Applatics, the project gained traction when Intuit acquired the company and its technology to enhance their Kubernetes capabilities. The project eventually evolved into a comprehensive suite, incorporating various tools that address specific user needs, such as workflow management and continuous delivery. This development underscored a collaborative effort to adapt Kubernetes to a wider range of application requirements, making Argo a significant player in the cloud-native landscape.
Overview of Argo's Core Tools
Argo comprises four main tools: Argo Workflows, Argo CD, Argo Rollouts, and Argo Events, each addressing different aspects of continuous integration and delivery (CI/CD). Argo Workflows primarily manages long-running processes by breaking tasks into manageable steps, while Argo CD operates as a GitOps operator that synchronizes the declared infrastructure state from git repositories to Kubernetes clusters. Argo Rollouts enhances deployment strategies, supporting complex patterns like blue-green and canary releases, while Argo Events serves as an event broker that connects various event sources to workflows. This modular approach allows users to leverage tools as needed within their existing CI/CD pipelines.
Functionality of Argo Workflows and Events
Argo Workflows provides a flexible, generic pipeline system capable of orchestrating complex workflows such as building images and processing large datasets, exemplified by use cases in sectors like satellite imaging and CI/CD. The tool's ability to process long-running jobs through a directed acyclic graph allows for efficient task management and resource allocation. In contrast, Argo Events functions as an event broker that receives triggers from external event sources like SQS or Kafka and initiates workflows based on these events. This integration creates a streamlined mechanism for automated task execution, enhancing operational efficiency in dynamic environments.
Integrating CI/CD Processes with Argo Tools
Argo CD and Argo Rollouts play pivotal roles in the CI/CD pipeline, with Argo CD facilitating the application of desired states defined in Git to the Kubernetes environment. This separation of continuous delivery from continuous integration aids developers in maintaining clarity regarding deployment processes and infrastructure states. Meanwhile, Argo Rollouts enables progressive delivery techniques, allowing teams to incrementally route traffic and monitor application performance to catch potential issues early. The interconnected functionality of these tools ensures that teams can adopt robust deployment strategies tailored to their operational requirements without sacrificing ease of use.
Argo is an open-source suite of tools to enhance continuous delivery and workflow orchestration in Kubernetes environments. The project had its start at Applatix and was accepted to the Cloud Native Computing Foundation in 2020.
Michael Crenshaw and Zach Aller are both lead maintainers for Argo. They join the show with Lee Atchison to talk about the origins of the project, what problems Argo solves, the four core tools in Argo, and more.
This episode is hosted by Lee Atchison. Lee Atchison is a software architect, author, and thought leader on cloud computing and application modernization. His best-selling book, Architecting for Scale (O’Reilly Media), is an essential resource for technical teams looking to maintain high availability and manage risk in their cloud environments.
Lee is the host of his podcast, Modern Digital Business, an engaging and informative podcast produced for people looking to build and grow their digital business with the help of modern applications and processes developed for today’s fast-moving business environment. Listen at mdb.fm. Follow Lee at softwarearchitectureinsights.com, and see all his content at leeatchison.com.