How to Scale a Kubernetes Cluster

Containers are amazing but managing them one by one can be a nightmare! Steve Ovens joins us as we discuss the best way to manage container workloads with tools like OpenShift and OKD.

-- During The Show --

01:12 - Dave Follows up from EP 212 - Dave

• Avantree Bluetooth
  • Play/Pause works
  • Volume Buttons change headset volume not desktop volume
  • Mic is clear
  • Not USB-C
  • Another Dongle
  • Volume issues in Mic mode

03:45 - Multitrack recording under Linux? - Ryan

• Get Jacked from JB
• RME is considered High End
• Studio uses Axia
• Try Pipewire on Fedora
• Try using individual USB Audio devices
• Scarlett 18i8 3rd Gen USB Audio

11:00 - Managing a Cert Authority - Mike

• Jamielinux.com link
• Cert Manager

13:22 - Nextcloud hosting provider vs self hosting - Rodney

• Use block storage (S3 Compatible Storage)
• OVH - Supplemented by Canadian GOV
• Kimsufi - Where OVH servers go to die (still a good option)

15:00 Caller - Tony

• From the Chat - ZFS/BTRFS snapshots
• Clonezilla
• Hypervisor can lie about disk flushes, this breaks ZFS/BTRFS
• HDD Passthrough solves this
• IX Systems Post about virtualizing FreeNAS

25:15 Pick of the Week

• Open RGB
• OpenSource RGB light control

26:05 Gadget of the Week

• Ruggtek RTL 310
  • 10.1 1920 x 1200 Display
  • Multi-Touch
  • Intel Quad-Core
  • 4GB RAM
  • 64GB RAM
  • Comes with Ubuntu, Fedora, OpenSUSE
• Ruggtek RPL 550
  • 5.5" 1080 x 1920 Display
  • Intel Quad-Core
  • 4GB RAM
  • 64GB Storage
  • Comes with Ubuntu, Fedora, OpenSUSE

28:30 Containers/OpenShift

• Containers isolate processes with Cgroups
• System level containers
  • Similar to VMs
  • LXD

• Application level containers

  • Used by most businesses
  • Kubernetes
  • OpenShift/OKD
  • Docker
  • Podman

• Docker runs as root

• Podman is more modern and fixes this

• Fedora CoreOS

  • Made for running containers
  • Uses RPM OStree vs standard packages
  • Runs podman not docker

• OCI compliant - cross platform compliant containers

• OKD

• OKD Github

• SSH into containers

  • You can
  • Not by default
  • You really shouldn't

• Exec into a container is similar to SSH

• Containers are supposed to be disposable

• Container Management

  • Kubernetes
  • OpenShift/OKD
  • Many others

• To install you need to know

  • SSH
  • Basic Networking
  • Yaml

• Container Management gets you

  • Load Balancing
  • High Availability
  • Monitoring
  • etc

• Containers are ephemeral by default

• Containers typically have a shared storage backend

• OpenShift/OKD Takes care of a lot of networking for you

• There are two networks involved

  • Communication - Container to Container
  • LAN - Traditional Network

• docs.okd.io

• Katacoda

54:05 Facefish

• Netlab 360
• Dropper and Rootkit
• Ring 3 layer
• Backdoor can
  • Upload device information
  • Steal user credentials
  • Bounce Shell
  • Execute commands

Call to Action

• We will have community rooms/booths

• Matrix Chat (Element) will be used again this year

• SELF will be virtual this year, hosted again by yours truly!

• SELF Call for Talks

• SELF dates June 10-12

• Email volunteers@minddripmedia.com with your skill set and contact details

-- The Extra Credit Section --

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• Noah - Kernellinux
• Ask Noah Show
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Special Guest: Steve Ovens.

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