Umegbewe Great Nwebedu
Site Reliability Engineer
Port Harcourt, Nigeria
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Site Reliability Engineer. You can talk to me about Linux, DevOps and Distributed Systems
In my freetime, I'm probably working on my Linux distro, boxing or reading random stuffs.
Area of Expertise
Containers Orchestration - Kubernetes
Containers are lightweight and ephemeral by nature and have grown popular in the last years.
However, its advantages could be a curse too, maintaining containers in production can rapidly become a major undertaking especially when building and running on a large scale.
Container Orchestration tools make these operational difficulties quite manageable and do an excellent job.
In this talk (which includes a demo), we would focus on Kubernetes a Container Orchestration tool originally built by Google, and discuss the following topics in Kubernetes:
* Container’s lifecycles
* Deployments
* Networking
* Load balancing
* Scaling
* Resource Allocation
From Chaos to Consistency: Building Reliable Environments with Packer and Terraform
Abstract:
In today's fast-paced and ever-changing technology landscape, it's crucial to have reliable and consistent infrastructure. But building and maintaining such an infrastructure can be a daunting task. In this talk, we'll share our personal experiences and insights on using Packer and Terraform to create and manage reproducible environments. We'll discuss the pain points we encountered when trying to make our environments reproducible and how Packer and Terraform helped us overcome these challenges.
We'll explore how to use Packer to build machine images and how to use Terraform to deploy those images to various environments. We'll also cover best practices for using these tools, including how to version control your infrastructure code and how to test and validate changes before deployment.
Whether you're a developer, an operations engineer, or a DevOps practitioner, this talk will provide valuable insights into how to create and maintain reliable and consistent environments using Packer and Terraform.
Audience:
This talk is intended for anyone interested in building reliable and reproducible infrastructure, including developers, operations engineers, and DevOps practitioners. Prior knowledge of Packer and Terraform is not required, but familiarity with infrastructure as code (IaC) concepts would be helpful.
Linux Container Internals
The microservices-driven architecture would not be thriving today if it were not for matching runtime environments - the container runtimes.
Containers however, would not be possible without the availability of features that enable the virtualization of resources such as processes, filesystems and devices.
In this talk, we would explore the following:
* How Containers work.
* The features in the Linux Kernel that make them possible precisely cgroups, namespaces, and UnionFS.
* Container Runtimes
* Container Storage and Networking
Reliability Patterns in Permissioned Blockchain Systems
This session is about architectural and operational patterns for hardening permissioned blockchains networks like Hyperledger Fabric against failures.
This talk covers topics such as:
* Designing fault-tolerant node clusters
* Byzantine fault tolerance (BFT) considerations
* Network partition handling and recovery strategies
* Performance tuning for high availability
* Deploy monitoring stacks for permissioned environments.
Attendees will gain insights into architectural decisions, real-world failure scenarios, and best practices to enhance the reliability of permissioned blockchain systems. Whether you’re building a private blockchain for financial transactions, supply chain tracking, or identity management, this session will equip you with actionable reliability techniques.
When Systems Fail: Lessons Learned from Real-Life Incidents as SRE’s
This talk will provide attendees with a fascinating insight into the world of Site Reliability Engineering (SRE). Great and Jubril, experienced SREs, will take the audience on a journey through the chaotic and unpredictable world of complex systems, sharing their first-hand experiences of real-life incidents and outages.
The speakers will highlight the lessons learned from these incidents and how they have contributed to developing more robust systems. The audience will gain valuable insights into incident response and problem-solving techniques, including how SREs deal with complex issues under pressure.
Throughout the talk, the speakers will provide examples of the challenges faced by SREs, and the creative solutions they have developed to overcome them. Attendees will learn about the importance of communication and collaboration in mitigating and preventing incidents, as well as the significance of continuous improvement and iteration.
This talk is perfect for anyone interested in the field of SRE or those responsible for maintaining complex systems or those who just want to great laugh at failures. Attendees will leave with a greater understanding of the challenges faced by SREs, and the skills and strategies necessary to navigate the unpredictable world of complex systems.
Kubernetes Community Days Africa 2022 - Lagos Sessionize Event
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