Likelihood to Recommend
CoreOS rkt is well suited for any development environment where operating systems and hardware are not homogeneous. CoreOS rkt allows us to write code on one machine with the confidence that it will work on any other. This has been immensely helpful as our developers are often switching to the latest and greatest machines and operating systems. CoreOS rkt is less suited for environments that are not Software as a Service. There is often no need to bring the entire developer environment and associated dependencies when delivering a one time product. In these environments CoreOS rkt just adds unneeded overhead.
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Nomad is well suited for organizations who wish to tackle the problem of cloud computing with as little opinion as possible. Where competing tools like Kubernetes limit the concept of "batteries included," Nomad relies on engineers understanding the missing components and filling them in as necessary. The benefit of Nomad is the ability to build a system out of small pieces with the cost of having more complexity at a system level compared to alternatives.
Read full review Pros Running a secure container without messing up with low-level details Very clear and straightforward approach to building a container A way to go for new projects thinking of containers Comprehensive and well-written documentation compatible with UNIX keep it simple way of thinking Read full review Nomad is incredibly simple by nature, following the Linux philosophy of doing one thing great. That one thing for Nomad is job scheduling. Nomad is a modern tool, written in Go with a large community and maintained by HashiCorp. Implementation of Nomad is very simple since it is a single binary. Read full review Cons Market share, it's often very difficult to find new talent who use CoreOS rkt. Lack of wow features, CoreOS rkt doesn't necessarily offer any immediate advantages over other container solutions. Read full review Nomad only handles one part of a full platform. Expertise and vision are required in implementing an entire system that is functional enough for an organization to rely on. This includes other tools to handle things like secrets, service discovery, network routing, etc. Nomad is delayed in some modern functionality, like features for service-mesh and open tracing. These features are on the tool's roadmap, but there's currently no native support. These paradigms can be established still, but require more expertise outside of Nomad itself. Nomad is not the leading tool for this space, and as such risks being left behind by tools with much greater support, such as Kubernetes. Read full review Alternatives Considered
Docker, lxc, Ubuntu Snappy, partisan chroot+unshare Reformulating the problem and realizing a container is not necessary when a testing environment with clearly defined behavior.
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Nomad's primary competitor is Kubernetes, specifically its scheduling component. Kubernetes is a much more complete system that will handle more things than job scheduling, including service discovery, secrets management, and service routing. There also exists a much larger community support for Kubernetes vs Nomad. One might say Kubernetes is the safer choice between the two. Kubernetes is the complete "operating system" for cloud computing, but with it includes complexities that are "Kubernetes" specific. The decision really comes down to a mindset of monolith vs components. With Kubernetes, I would argue you choose the entire system as a whole. With Nomad, you design your system piece by piece. There is no wrong answer.
Read full review Return on Investment Developers spend less time configuring and more time coding. Less time training developers as CoreOS rkt lets them use whatever hardware and operating system they want. Reduced our IT costs, solutions are containerized using CoreOS rkt meaning they can write one solution with many developers in mind. Read full review Nomad has allowed our organization to deploy quicker and more frequently with a lower failure rate. Nomad has brought in consistency from an operations perspective. Nomad's performance allows us to scale infinitely while providing functionality that reduces mean time to repair (canary deploys, versioning, rollbacks, etc). Read full review ScreenShots