Learn Kubernetes Weekly issue 78
conntrack limiting your Gateway, Lookup resources inside Helm, Cilium native routing in Kind, DaemonSets: the Philosopher's Stone of lazy sysadmins
8 May 2024
This newsletter is brought to you by Otterize — automate workload IAM policies: zero-friction development, zero-trust security.
Articles
How conntrack could be limiting your Kubernetes Gateway
Jay Miracola
The article discusses how conntrack can limit a Kubernetes gateway under high load.
It provides insights on monitoring conntrack events, ways to address conntrack exhaustion, and considerations for optimizing performance.
Lookup Kubernetes resources inside Helm Charts
Kirill Shirinkin
Did you know that you can query Kubernetes API directly from your Helm templates?
This article demonstrates how to query Kubernetes API from Helm templates to automate tasks like scaling down deployments.
Play with Cilium native routing in Kind cluster
Jérôme NAHELOU
In this article, you will learn how to optimize performance and network management in your Kubernetes environment by fully leveraging the advanced features of tools such as Cilium, eBPF, and XDP.
EKS pods stuck in Init/ContainerCreating state
Hazmei Abdul Rahman
Ascenda Loyalty's team encountered issues with pods stuck in ContainerCreating due to maxing out pod ENIs, a limitation when using security groups for pods.
The fix involved reducing ENI usage and addressing discrepancies caused by db migration jobs.
DaemonSets: the Philosopher’s Stone of lazy sysadmins
Luis Toro Puig
DaemonSets in Kubernetes offer a convenient way for sysadmins to deploy system-level services across a cluster, but using them for privileged and non-isolated workloads raises security concerns.
Learn why in this article.
Hardening container images: best practices and examples for Docker
Fabien Soulis
Container image hardening involves adhering to best practices, monitoring vulnerabilities, and enhancing container security.
This article provides guidelines to mitigate risks in running Docker containers in production.
Articles worth checking out:
Human readable Network Policies and Kafka ACLs
Otterize
Instead of managing pod identities and manually authoring individual network policies, Otterize implements intent-based access control (IBAC).
Declare what the pods can do, and everything is automatically wired together.
Tutorials
Scaling a bare metal cluster into the cloud
Mathius Pius
In this tutorial, you will learn how to expand and scale an on-premise, bare-metal cluster into a public cloud using Kubespan — a Wireguard-based mesh network and Talos.
sponsored
Secret management in EKS using SSM Parameter Store, KMS and ESO
Geoffrey
In this article, you'll learn how to store secrets while ensuring multi-tenancy, local work and scalability with:
- SSM Parameter Store to store configs and secrets.
- IAM to restrict access.
- KMS to encrypt/decrypt secrets.
- External Secret Operator.
Kubernetes, Talos OS, Raspberry PI 4, and the power duo of Prometheus and Grafana!
Juan Botero
The guide details setting up Kubernetes, Talos OS, Prometheus, and Grafana on Raspberry Pi 4.
Set up a Kubernetes cluster in under 5 minutes with Proxmox and k3s
Mihai Farcas
This tutorial demonstrates setting up a Kubernetes cluster in under 5 minutes using Proxmox and k3s on compact mini PCs.
It covers adding a new node, creating a virtual machine, installing K3S, and monitoring power consumption.
Create managed resources using Crossplane Composite
Muhammad Mustafa
In this tutorial, you'll learn how to use Crossplane to create and manage multiple managed resources using Compositions.
It demonstrates the process using minikube and covers the creation of an Instance and DynamoDB table.
Kubernetes jobs
Software Engineer with Monta
Salary: kr. 540K to kr. 660K a year
Location: based in the office (and remote from home) in Copenhagen, DK
Tech stack: Kubernetes, AWS, Docker, Java, Kotlin, Redis, MySQL, Grafana, Prometheus, Loki
DevOps Engineer with PressReader
Salary: US$110K to US$130K a year
Location: based in the office (and remote from home) in British Columbia, CA
Tech stack: Kubernetes, AWS, Azure, GCP, On-premise, ArgoCD, Docker, Openstack, Terraform, Azure DevOps
Software Engineer with Altruist
Salary: $170K to $226K a year
Location: based in the office (and remote from home) in San Francisco, CA, USA
Tech stack: Kubernetes, AWS, Docker, Python, SQL, Java, Cassandra, Redis, PostgreSQL, MySQL
Software Engineer with Boba Commodities
Salary: £110K to £120K a year
Location: based in the office (and remote from home) in London, GB
Tech stack: Kubernetes, AWS, Python, SQL, Javascript, C#, Flink, Airflow, Kafka, Terraform
DevOps Engineer with Madwire
Salary: $100K to $160K a year
Location: remote from the United States
Tech stack: Kubernetes, AWS, GCP, Go, Python, Javascript, Terraform, Pulumi, CircleCI, GitHub Actions
Discover more Kubernetes jobs on Kube Careers →
Code & tools
The HULL Helm library chart is designed to ease building, maintaining and configuring Kubernetes objects in Helm charts.
git-sync is a simple command that pulls a git repository into a local directory.
It is a perfect "sidecar" container in Kubernetes - it can periodically pull files down from a repository so that an application can consume them.
Wireguard-operator is a WireGuard operator created to easily provision a VPN in a Kubernetes cluster.
Kraken is a P2P-powered Docker registry that focuses on scalability and availability.
It is designed for Docker image management, replication, and distribution in a hybrid cloud environment.
Capsule: Kubernetes operator for multi-tenancy
Capsule implements a multi-tenant and policy-based environment in your Kubernetes cluster.
It is designed as a micro-services-based ecosystem with a minimalist approach, leveraging only upstream Kubernetes.
Other interesting projects:
Upcoming Kubernetes events
May
10
Kubernetes Community Days Argentina 2024
In-person conference organized by KCD Argentina.
Location: Buenos Aires, AR
This event requires an entrance fee
May
11
Kuberentes Community Days Dhaka 2024
In-person conference organized by KCD Dhaka.
Location: Dhaka, BD
This is a free event.
May
13
Advanced Kubernetes course (Munich)
In-person workshop organized by Learnk8s.
Location: Munich, DE
This event requires an entrance fee
May
15
Kubernetes Community Days Istanbul
In-person conference organized by KCD Istanbul.
Location: Istanbul, TR
This event requires an entrance fee
Use LEARNK8SKCDIST24 to get 10% off
May
16
Understanding Amazon EKS blueprints with Amazon EKS add-ons for clusters
Online meetup organized by AWS User Group Women Bay Area.
This is a virtual event
This is a free event.
Discover more Kubernetes events on Kube Events →
Kubernetes Call for Papers
21
days
The Call For Paper is open until 10 June 2024 at UTC. More info →
Location: Salt Lake City, UT, USA and virtual
Online & in-person conference organized by Linux Foundation.
The conference starts on the 12 November 2024.
- Apply here
expired
Kubernetes Community Days Lima, Perú 2024
The Call For Paper was open until 16 May 2024 at UTC. More info →
Location: Lima, PE
In-person conference organized by KCD Lima, Perú.
The conference starts on the 20 July 2024.
- Apply here
expired
The Call For Paper was open until 19 May 2024 at UTC. More info →
Location: Tokyo, JP
In-person conference organized by Linux Foundation.
The conference starts on the 27 August 2024.
- Apply here
15
days
The Call For Paper is open until 4 June 2024 at UTC. More info →
Location: London, UK
In-person conference organized by KCD UK.
The conference starts on the 23 October 2024.
- Apply here
14
days
Kubernetes Community Days Washington DC 2024
The Call For Paper is open until 3 June 2024 at UTC. More info →
Location: Washington, DC, USA
In-person conference organized by KCD Washington DC.
The conference starts on the 24 September 2024.
- Apply here
33
days
Kubernetes Community Days Austria 2024
The Call For Paper is open until 22 June 2024 at UTC. More info →
Location: Vienna, AT
In-person conference organized by KCD Austria.
The conference starts on the 10 October 2024.
- Apply here
25
days
The Call For Paper is open until 14 June 2024 at UTC. More info →
Location: Santa Clara, CA, USA
In-person conference organized by DevNetwork.
The conference starts on the 14 November 2024.
- Apply here
expired
The Call For Paper was open until 20 May 2024 at UTC. More info →
This is a virtual event
Online conference organized by KubeVirt.
The conference starts on the 25 June 2024.
- Apply here
expired
The Call For Paper was open until 13 May 2024 at UTC. More info →
Location: Copenhagen, DK
In-person conference organized by Eficode.
The conference starts on the 5 November 2024.
- Apply here
Until next time!
— Dan
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