kevmo314 6 months ago

> Understanding the nuances and distinctions between these key concepts becomes crucial as you navigate the complex — yet rewarding — waters of container orchestration.

Can't say I've ever felt rewarded for using Kubernetes, literally or metaphorically.

  • smitelli 6 months ago

    Early on I heard the k8s controller ecosystem described as “a half dozen concurrent `while true` loops all fighting with each other.” Can’t say I disagree.

    • ithkuil 6 months ago

      Isn't that what we all are?

    • pphysch 6 months ago

      Isn't that distributed systems in a nutshell?

      • nejsjsjsbsb 6 months ago

        Node.js in a nutshell for sure

  • Abhisman 6 months ago

    Eh, dont you feel rewarded solving problems in general?

    • kevmo314 6 months ago

      Can't say I feel like Kubernetes has solved more of my problems than it created.

      • melodyogonna 6 months ago

        Are you doing datacenter-scale deployment and configuration?

        • kevmo314 6 months ago

          Yup

          • melodyogonna 6 months ago

            And you don't think Kubernetes solves a lot more problems than it creates? Very interesting, I wonder what you're comparing to.

ofrzeta 6 months ago

Doesn't seem to offer more insights than the Kubernetes docs.

  • LetMeLogin 6 months ago

    Totally. Plus it's misguiding readers with different functionality and use cases.

    For example "Persistent Storage: StatefulSets provide persistent storage to their pods through Kubernetes PersistentVolumes".

    The thing is that STS doesn't do that. That's actually in POD definition.

    • vanillax 6 months ago

      Agree. Its more confusion. PVC / PV are native to k8s not something part of statefulsets. In fact you _probably_ only need to use Statefulsets for databases. Which is probably going to be abstracted away with Operators.

      • verdverm 6 months ago

        It's more about roll forward/backward and services with a master+replica or leader election. That PVCs are common in stateful sets is more a symptom than the cause

        • vanillax 6 months ago

          Yea for sure. Thats why I dropped the term database because thats the exact scenario ( master / replica ) where pod consistency naming,dns, network etc is important for StatefulSet.

    • MuffinFlavored 6 months ago

      I had no idea... probably shows I haven't hit an advanced enough use case.

      > why isn't a statefulset just a deployment/pod with PVC mounted?

      * StatefulSets provide predictable pod names and hostnames (pod-0, pod-1)

      * StatefulSets handle pods sequentially (0→1→2), ensuring proper cluster initialization.

      * StatefulSets maintain a consistent pod-to-PVC mapping even after pod rescheduling.

      * StatefulSets delete pods in reverse order,

      • wbl 6 months ago

        You can look at the structure in TFA to see this. The only discussion of the volume mounting is in the pod template, not the Stateful Set itself.

      • vanillax 6 months ago

        You can map a PVC back to a pod without statefulset. You just need to create the PV and PVC and map it to a deployment.

    • null0pointer 6 months ago

      Author is most likely farming credibility with blog spam.

  • Abhisman 6 months ago

    "Maybe readers would want to read what I've written" - That's the approach that I had in mind when writing the article.

dgfitz 6 months ago

I hope I've avoided containers enough to let this phase pass by. Formalizing vocabulary around the different states of a container makes me want to throw up my hands in a Seinfeld "come one" motion.

  • Leo_Verto 6 months ago

    Like it or not, containers are here to stay. They just make way too much sense as an atomic unit for delivering applicstions and really aren't that complicated.

    Kubernetes is a whole nother beast though and while it introduces a ton of overhead, it can be useful at a certain organisational scale as an API definition for delivering services to other teams.

  • crabbone 6 months ago

    This isn't about the state of container. It's about interactions between several containers (a group of containers is called a pod). Which, probably, doesn't make it better for you, but for the sake of correctness...