Kubernetes on-premise

 There are a number of ways to network containerized app running in separate machines.  Docker offers IPVLAND, MACVLAN, Bridges, and Overlay.  For local development or just a few machines, Bridge and VLANs seems just fine.  As the infrastructure gets more complex, then I am face with the prospect of Overlay.  In that case, I am feeling may be reaching for Kubernetes is better than going for Docker.

So, how to bring an on-premise K8S into live?  I am anti-expertise so to bring up a huge chunk of infrastrure like this, I would go for reputable providers such as anthos or EKS anywhere.

Comments

Post a Comment

Popular posts from this blog

LB + amp agar plate protocol

Image
 LB + amp agar plate is used in bio labs often.  Preparing agar plates is a good skill to have.  Below are the steps or protocol to do it but I also an online protocol as reference.   The LB in powder form should have proportion information there.  The one I have say dissolve 40g of mix in 1 liter of water.  The 40g is a mixture of NaCL 10g, Trypton 10g, Yeast Extract 5g, and Agar 15g.  The plate I use is 100mm x 15mm.  Below is the scale for reference: I have 10 of these 100mm x 15mm plates and each will take 10mL to 15mL of agar.  If I select to do 10mL per plate so we need 10mL x 10 = 100mL of Agar.  If I select to do 15mL per plate then I would need 15mL x 10 = 150mL.  I feel 15mL is better to give me extra margin or error. I can take a 500mL bottle and will it up to 200mL of water + agar powder.  So, 40g/1.0 liter where 1.0 liter equals to 1000mL.  I can do the following algebra: 40g/1000mL = Xg/200mL then X = 8...
Read more

SSH to Docker container and run X11 on Mac Pro Host Machine

 So, I have an CoMA3 X11 app.  It is a genetic analysis pipeline.  I can run its Docker container on MAC OS like so : docker run -it -e DISPLAY=$IP:0 -e XAUTHORITY=/.Xauthority --net=host --ipc=host -v /tmp/.X11-unix:/tmp/.X11-unix -v ~/.Xauthority:/.Xauthority -v $(pwd):/home sebh87/coma3 bash  Actually, I have to change it to this: docker run -it -e DISPLAY= host.docker.internal:0   -e XAUTHORITY=/.Xauthority --net=host --ipc=host -v /tmp/.X11-unix:/tmp/.X11-unix -v ~/.Xauthority:/.Xauthority -v $(pwd):/home sebh87/coma3 bash but before running it I have to do this  xhost + localhost . It is not too bad since I am using .Xauthority's magic cookie for authentication.  The communication between my X11 client and server is over plan text so not so good.  I would like to run this over ssh instead.  So, I edited the original Dockerfile to this: FROM sebh87/coma3:latest RUN apt update && apt install    openssh-server sudo -y RU...
Read more

DevOps Madness

The problem with DevOps is there are too many technology to know.  The only way to manage DevOps work is follow some principles.  Here are some principles: Build self service infrastructure Build evolvable infrastructure Be anti-expertise Build disposable infrastructure Over communicate Do no harm Pay down technical debts AWS is a totally self service infrastructure.  They have great documentation, their GUI is intuitive, and they have great support to show you how things are done.  I can pretty much compose infrastructure on my own in AWS without needing to ask AWS engineers to build stuff for me.  Granted from time to time, I need to ask them to increase quotas.  DevOps should aim to provide same level of service to internal customers.  DevOps tools are constantly evolving, GitOps has gain acceptance in the field and it is a great thing.  GitOps is a great help in moving DevOps services toward a self service model.  Just do it until a b...
Read more