#kubernetes - July 2019 | Slack Archive

kubernetes

116 messages

Archive: https://archive.sweetops.com/kubernetes/

Jun 2019

July 2019

Aug 2019

davidvasandanialmost 7 years ago

https://sanic.io

davidvasandanialmost 7 years ago

Sanic is an omni-tool which lets you build, deploy, and manage Kubernetes clusters.

btaialmost 7 years ago

reminds me of #geodesic

PePe Amengualalmost 7 years ago

anyone running a container with 200GB+ memory ?

PePe Amengualalmost 7 years ago

somebody mentioned a tool for setting ENV variables for docker with support for different environments ?

PePe Amengualalmost 7 years ago

with some template support

PePe Amengualalmost 7 years ago

for the life of me I can’t recall the name….

Erik Osterman (Cloud Posse)almost 7 years ago

https://github.com/weaveworks/eksctl/issues/508

Erik Osterman (Cloud Posse)almost 7 years ago

Anyone know if it's possible to pass settings in the config to run commands on startup (like with kops)?

Erik Osterman (Cloud Posse)almost 7 years ago

...in eksctl

Erik Osterman (Cloud Posse)almost 7 years ago

(@mumoshu)

Erik Osterman (Cloud Posse)almost 7 years ago

e.g. in kops, we can do:


  hooks:
  # Mitigate CVE-2019-5736
  - before:
    - docker.service
    manifest: |
      Type=oneshot
      ExecStart=/usr/bin/chattr +i /usr/bin/docker-runc

i5okiealmost 7 years ago

Hi, has anyone tried the bitnami kubeprod.io stack? (https://github.com/bitnami/kube-prod-runtime)

Alex Coalmost 7 years ago

hi, anyone here knows about use boolean value with k8s ?

Alex Coalmost 7 years ago

i’m trying to read the value from Environment variable, and i realize that when setting the env var inside a pod, it’s always format it as a string

Alex Coalmost 7 years ago(edited)

for example MY_VAR=abc will be MY_VAR=‘abc’ inside a pod

Alex Coalmost 7 years ago

if any program is expecting the boolean type, it will throw error

Alex Coalmost 7 years ago

is there a way to solve this ?

Alex Coalmost 7 years ago

thanks

MiLkalmost 7 years ago

environment variables are always strings

MiLkalmost 7 years ago

it needs to be handled by your program or whatever library you are using

Alex Coalmost 7 years ago

thanks @MiLk

Erik Osterman (Cloud Posse)almost 7 years ago

https://github.com/aws/containers-roadmap/issues/398

Erik Osterman (Cloud Posse)almost 7 years ago

Higher container density is coming

Erik Osterman (Cloud Posse)almost 7 years ago

https://github.com/ibuildthecloud/k3v

PePe Amengualalmost 7 years ago(edited)

Hi, I have an idea about how I’m going to implement config templating for our containers and I will like some feedback :
- Secrets and non secrets will be stored in aws Parameter Store+KMS
- Chamber will be used to update/create secrets
- Path IAM roles will be created for every environment /dev/secrets /prod/secrets etc
- ECS Task per environment will have access to the /env path that have secrets and not secrets ( no shared configs)
- Dev will use chamber to set ENV variable to run their local containers
- confd might be use to create the config templates on Docker build

PePe Amengualalmost 7 years ago

most Jenkins will be doing the initial push and CodeDeploy will do the rest for Blue Green

PePe Amengualalmost 7 years ago

any comments ?

timduhenchanteralmost 7 years ago(edited)

Anyone familiar enough with Kubernetes API to maybe know a way to get the resourceVersion of the parent for a given pod? Trying to ignore events in the watch if the change was initiated by its parent (I am not the controller). This is related to a ReplicaSet

Erik Osterman (Cloud Posse)almost 7 years ago

https://draft.sh/

btaialmost 7 years ago

saw this at kubecon

btaialmost 7 years ago

my gripes wit this is the feedback loop for rebuilding an image is slow

Erik Osterman (Cloud Posse)almost 7 years ago

what were your thoughts?

btaialmost 7 years ago

so during development esp. if you save alot assuming youre doing some web dev you’d typically want to refresh your browser right after you save

btaialmost 7 years ago

and see the changes right away

btaialmost 7 years ago

even during their demo at kubecon there was a bit of waiting

btaialmost 7 years ago

for the demo image (prob really small) to rebuild

Erik Osterman (Cloud Posse)almost 7 years ago

I think developers mostly want live reloading

Erik Osterman (Cloud Posse)almost 7 years ago

e.g. what you get with telepresence

btaialmost 7 years ago

yep

btaialmost 7 years ago

most prob use docker compose to spin up dependencies

btaialmost 7 years ago

and run their app locally

btaialmost 7 years ago

i think itd be awesome if you could have that type of live reloading but your app is hosted on a k8s cluster in the cloud

btaialmost 7 years ago

each developer would have their own namespace

Erik Osterman (Cloud Posse)almost 7 years ago

yep - that's what we're working on

Erik Osterman (Cloud Posse)almost 7 years ago

but haven't yet tackled telepresence

btaialmost 7 years ago

are you able to do live reloading comparable to running it locally

btaialmost 7 years ago

cause thats a gamebreaker i think for most devs

Erik Osterman (Cloud Posse)almost 7 years ago

https://www.telepresence.io/

Erik Osterman (Cloud Posse)almost 7 years ago

so with telepresence you run "the" service locally

Erik Osterman (Cloud Posse)almost 7 years ago

but all your backing services run in k8s (e.g. in a developer namespace)

btaialmost 7 years ago

Erik Osterman (Cloud Posse)almost 7 years ago

telepresence is like a reverse proxy. it sits in k8s and any requests it gets it sends back to the service on your laptop

Erik Osterman (Cloud Posse)almost 7 years ago

so it's like teleporting your local service into the cluster

Erik Osterman (Cloud Posse)almost 7 years ago

plus your local service can access everything running in k8s (e.g. database or other backing services)

Erik Osterman (Cloud Posse)almost 7 years ago

since it runs on your local laptop, you get all the benefits

Erik Osterman (Cloud Posse)almost 7 years ago

easier debugging, attaching debuggers, live reloads, etc

btaialmost 7 years ago

ah yeah

btaialmost 7 years ago

but i guess other than the fact that dependent services hosted in cloud

btaialmost 7 years ago

is there any other benefit than running those in a docker compose

Erik Osterman (Cloud Posse)almost 7 years ago

you're testing your services in an environment that's closer to staging/prod

Erik Osterman (Cloud Posse)almost 7 years ago

if you have 30-40 microservices as part of your stack, good luck doing that on your laptop

Erik Osterman (Cloud Posse)almost 7 years ago

if you need large datasets for development, can't do that easily locally

Erik Osterman (Cloud Posse)almost 7 years ago

maybe it's nicer to have all the data stay in AWS from a security perspective

btaialmost 7 years ago

truee

Erik Osterman (Cloud Posse)almost 7 years ago

multiple developers can be working on pieces of the project at the same time

Erik Osterman (Cloud Posse)almost 7 years ago

and using a shared environment

btaialmost 7 years ago

so you host the db remotely as well

btaialmost 7 years ago

assume youre working on an API

Erik Osterman (Cloud Posse)almost 7 years ago

its easier for others to QA changes in a public environment (e.g. if your laptop is offline, no one can review)

Erik Osterman (Cloud Posse)almost 7 years ago

yea, usually run db as a container for these env

btaialmost 7 years ago

nice

btaialmost 7 years ago

yeah the large dataset hosted remotely one is actually really useful

btaialmost 7 years ago

allowing multiple devs on same project

cabrinhaalmost 7 years ago(edited)

Has anyone here been able to get Istio installed to EKS? I'm trying to get it installed with my worker nodes all residing in private subnets and I'm running into weird issues.

Erik Osterman (Cloud Posse)almost 7 years ago

@Vidhi Virmani I think did

cabrinhaalmost 7 years ago

Most of the examples I come across online assume you're in public subnets with ELBs and security groups open to the world 😅

cabrinhaalmost 7 years ago

@Vidhi Virmani if you've installed Istio on EKS in private subnets, ping me! 😄

Danover 6 years ago

Is there a way to have helm chart create external resources?(RDS/Elasticache)

Erik Osterman (Cloud Posse)over 6 years ago

https://github.com/awslabs/aws-service-operator

Erik Osterman (Cloud Posse)over 6 years ago

https://github.com/awslabs/aws-servicebroker

Erik Osterman (Cloud Posse)over 6 years ago

Then use the Helm raw chart to provision

Erik Osterman (Cloud Posse)over 6 years ago

The CRDs for RDS

Danover 6 years ago

Thank you!

Danover 6 years ago

What are people using as an oauth2 provider to login to their apps like k8 dashboard?

Erik Osterman (Cloud Posse)over 6 years ago

keycloak

Erik Osterman (Cloud Posse)over 6 years ago(edited)

+ gatekeeper proxies

PePe Amengualover 6 years ago

keycloak too but not for k8 but for pretty much anything

cabrinhaover 6 years ago

I'm interested to hear how people are using CD in Kubernetes. Is anyone doing Canary deployments on their EKS cluster? How?

i5okieover 6 years ago

last year spent a few months troubleshooting and improving apps running in ElasticBeanstalk. with help from guys here 🙂 (thank you).
This year I’m deleting those ElasticBeanstalk stacks one by one after moving the apps to K8s. #lifeofadevopsengineer

Erik Osterman (Cloud Posse)over 6 years ago

haha too true. Thanks @i5okie for the update.

joberover 6 years ago(edited)

I am looking at starting to use Kubernetes for the first time for a small system that I would eventually grow. Would you suggest using Kubernetes directly or using AWS EKS?

Erik Osterman (Cloud Posse)over 6 years ago

I would give eksctl a shot

Erik Osterman (Cloud Posse)over 6 years ago

Probably the most turn key way to get up and running with EKS for a small project.

Erik Osterman (Cloud Posse)over 6 years ago

(we still use kops)

joberover 6 years ago

i was playing around with kops over the weekend

joberover 6 years ago

worked really well, just unsure at this point how to manage everything

Erik Osterman (Cloud Posse)over 6 years ago

kops is easy to get up and running.

Erik Osterman (Cloud Posse)over 6 years ago

the challenge with kubernetes is updates between major releases can be tricky

Erik Osterman (Cloud Posse)over 6 years ago

e.g. 1.11 -> 1.12 upgraded to etcd3 and there was no automated way to easily upgrade

Erik Osterman (Cloud Posse)over 6 years ago

while on EKS, those kinds of upgrade challenges are handled by the platform

Erik Osterman (Cloud Posse)over 6 years ago

also, i believe the upgrade from 1.14 to 1.15 is also that way

erikover 6 years ago

joberover 6 years ago

Thanks that is really good to know. I’ll give EKS a go. Much appreciated

Andriy Knysh (Cloud Posse)over 6 years ago

we also have TF modules for EKS

Andriy Knysh (Cloud Posse)over 6 years ago

https://github.com/cloudposse/terraform-aws-eks-cluster

Andriy Knysh (Cloud Posse)over 6 years ago

https://github.com/cloudposse/terraform-aws-eks-workers

Andriy Knysh (Cloud Posse)over 6 years ago

complete example https://github.com/cloudposse/terraform-aws-eks-cluster/tree/master/examples/complete

joberover 6 years ago

Awesome 🙏

joberover 6 years ago

Thanks so much!

joberover 6 years ago

Just found this as well, seems like a good beginner resource https://eksworkshop.com/introduction/

Erik Osterman (Cloud Posse)over 6 years ago

yes, I saw that - looks amazing

sohel2020over 6 years ago(edited)

is it possible to create a EKS cluster in my Existing VPC?

Stevenover 6 years ago

yes

joberover 6 years ago(edited)


module "eks_cluster" {
  source                  = "git::<https://github.com/cloudposse/terraform-aws-eks-cluster.git?ref=master>"
  namespace               = "eg"
  stage                   = "testing"
  name                    = "cluster"
  tags                    = "${var.tags}"
  vpc_id                  = "<YOUR VPC ID>"
  subnet_ids              = ["<YOUR PUBLIC SUBNET ID'S>"]

  # `workers_security_group_count` is needed to prevent `count can't be computed` errors
  workers_security_group_ids   = ["${module.eks_workers.security_group_id}"]
  workers_security_group_count = 1
}

jafowover 6 years ago

I’m looking for a minimally-hacky way to restart running pods in order pickup a change in config data

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