Date 2025-10-27 2025-10-31

working on the EKS cluster autoscaler, Some nodepool management with SPOT instances and on demand instances mix.
making a application stateless and some of the weird things about defaultMode in k8s volumeMount, root as uid for new folder mount as volume and guid managed by secerutyPolicy of fsGroup.
learning about how to make nice UI with the Help of AI ;)
Some nice rework and complex problems to solve
virtualization space of linux and some study time

Date 2025-10-25 2025-10-26

learning about SCI calculation and some of the proper way to cacluate some like emboddied emissions
some learning on the virtio on what does these virtual devices mean

learning when to use RWO based storage class in k8s. Using Cluster Backup says a lot of things.
learning about longhron backup and velero backups.

working on Gateway APi in k8s, helm upgrade hooks and some more longhorn specific learning
EKS deployment with Terraform with cluster autoscaler provisined with IRSA and OIDC things.
learning about RAPL and its sile structure and what all info it provides us with.

diwali celebrations :)
learning about how to use longhorn and a hack for putting things inside the workernodes in a EKS setup via daemonset.
Learning about go embed for sql migrations and how to use it with golang-migrate tool.

working on kepler and understanding how it used to work with the model estimators.
learning about cpu/[0,N]/msr, rapl and how does kepler use that to estimate.
wrote a blog post on resolve-virtmanager-network
able to make zero downtime deployments when there is a event based worker processing events and about draining it before making releases, all thanks to helm
learning how to better check for suitable limits, requests for cpu and memory for k8s workloads.

learning about _helpers.tpl and hooks in Helm charts. some more advance reusable functions.
learning of otel context propgatioand sand when to switch off/on telemetry for certain parts of the code based on the logic.

learning about configMapGenerator and SecretMapGenerator with disable random suffix for kustomize. with debugging env variables play.
learning about when do we use Otel Event vs Otel Span for tracing the HARD WAY.
when to use otel span at all and all about the different context propagation methods and its evential consistency property which traces have.

learning about placement groups usage any Cloud provider also the microsecond latencies and how to measure them.
learning about how to instrument a go app with opentelemetry for better logging and tracing for a production workload having multiple external services and find bottlenecks.
learning about longhorn RWX across workernodes and how it does replication among them and what happens if all the nodes loose data when its being used by applications.
learning about Linux Bluetooth and Audio codecs and AAC vs HAAC… and things ike pipewire and bluez and alsa and pulseaudio and how they interact with each other.
k8s sidecar containers which is now official feature since k8s 1.30

learning about k8s sidecar containers. new feature
learning about stripe compitator polar
bluetooth sound systems differen codec and when its used aka available bandwidth and quality tradeoff.
working on k8s for frappe
otel app instrumentation for better logging and tracing.
writing blog post with n8n aka automation. ;)

working on NATS Subscrioption Terminate vs NACK and ACK in production practical usecase.
Learning about complicaated EMAIL SPF entrie and email forwardings.
overall system architecture and the design decisions

was able to make the cluster create and cluster delete statemachine work with Emails and SES with postHooks.
nice waterfall hiking

learning about how to create Finite State machines in go to make complex workflows easier to manage.

learning about AWS SES configurations and also email anti spam and DKIM, SPF, DMARC records.
working on new features like email notifications.