Profile picture
, 12 tweets, 4 min read
My Authors
Read all threads
MEGATHREAD

Learn Kubernetes one Twitter thread at the time!

Below you can find a collection of threads about Kubernetes and Kubernetes-related tech!

I regularly add more, so you can follow me or @learnk8s for more updates!
What happens when you create a Pod in Kubernetes?

In this thread, you will learn how endpoints are propagated in the cluster when a Pod is created!

In Kubernetes, what should I use as CPU requests and limits?

Learn how to set requests and limits on your Pods.

Can you guess how many lines of code do you need to build a real-time dashboard for Kubernetes?

In this thread, you will learn how to query the Kubernetes API and retrieve pod updates.

How does the Kubernetes API work?

In this thread, you will learn how to use the API to reject bad YAML resources from the cluster.

What if you could control Kubernetes with Excel?

A fun story on how you can (ab)use of the Kubernetes API.

In Kubernetes ⎈, are there hidden costs on running many cluster nodes?

In this thread, you will learn how to size your instances in a Kubernetes cluster to maximise your efficiency.

How to quarantine a Pod in Kubernetes.

In this thread, you will learn a smart technique to debug your Pods in production.

Is there a best instance type for Kubernetes?

A technical writeup on the best instance types for your clusters.

How to gracefully shut down Pods without dropping production traffic in Kubernetes.

This thread is all about zero-downtime deployments.

Is it possible that Kubeflow pipeline is one of the best CI/CD tools for Kubernetes?

A quick review of Kubeflow pipeline — a machine learning toolkit for Kubernetes.

What is GitOps?

A short introduction to GitOps — why it is important and what it is.

Missing some Tweet in this thread? You can try to force a refresh.

Keep Current with Daniele Polencic

Profile picture

Stay in touch and get notified when new unrolls are available from this author!

Read all threads

This Thread may be Removed Anytime!

Twitter may remove this content at anytime, convert it as a PDF, save and print for later use!

Try unrolling a thread yourself!

how to unroll video

1) Follow Thread Reader App on Twitter so you can easily mention us!

2) Go to a Twitter thread (series of Tweets by the same owner) and mention us with a keyword "unroll" @threadreaderapp unroll

You can practice here first or read more on our help page!

More from @danielepolencic see all

Profile picture
Daniele Polencic
@danielepolencic
THREAD: What happens when you create a Pod in Kubernetes?

Spoiler: a surprisingly simple task reveals a complicated workflow that touches several components in the cluster.
1/8
You are probably familiar with the first 4 steps:

1. kubectl sends the YAML to the API
2. The Pod is stored in etcd
3. The scheduler assigns a Node

At this point the Pod is etcd, but no in the node.

4. The kubelet starts creating the Pod.
2/8
Next:

1. The kubelet delegates creating the container to the CRI
2. The kubelet delegates attaching the container to the network to the CNI
3. The CNI assigns an IP address
4. Probes are checked
5. The kubelet reports the IP address to the control plane
Read 9 tweets
Profile picture
Daniele Polencic
@danielepolencic
THREAD: What is GitOps?

Is this something that you should learn?

Let's dive into it.
1/10

The idea behind GitOps is straightforward:

1. Scripts that create update, delete, etc. infrastructure are saved in GIT.
2. The state of your infrastructure is saved in GIT.
3. You have automation to trigger all your scripts.

Let's see an example.
2/10

Let's deploy an app with a single replica:

1. Commit the Deployment definition in GIT
2. Execute the script to deploy
3. Done

How is this new?

Surely you do this already!

The devil is in the details, though.
Read 11 tweets
Profile picture
Daniele Polencic
@danielepolencic
THREAD: Is it possible that Kubeflow pipeline is one of the best CI/CD tools for Kubernetes?

I spent some time playing with Kubernetes & @kubeflow pipelines, and they have one feature which is just great:

You can define the pipeline with real code!
1/7
Kubeflow Pipelines is a CI/CD tool for machine learning.

Every step of the pipeline runs in a container — just like other CI/CD tools (Drone, Jenkins X, etc.)
2/7
But instead of writing YAML to define the steps, you can use a real programming language!

You can use Python to write the code and then submit it to Kubeflow.

If you prefer, you can still use YAML to define the pipeline.
Read 8 tweets

Embed code for your website

×
Follow Us on Twitter!

Did Thread Reader help you today?

Support us! We are indie developers!

This site is made by just two indie developers on a laptop doing marketing, support and development! Read more about the story.

Become a Premium Member ($3.00/month or $30.00/year) and get exclusive features!

Become Premium

Too expensive? Make a small donation by buying us coffee ($5) or help with server cost ($10)

Donate via Paypal Become our Patreon

Thank you for your support!