Minikube

라즈베리파이에서 k8s띄우는건 램없어서 포기 ㅜ

Install

내 minikube cluster를 재생성할수있는 스크립트..

뇌절 home-ops https://news.hada.io/topic?id=5809&utm_source=slack&utm_medium=bot&utm_campaign=T02T3N2VD

Rasp 4 setup

https://lance.tistory.com/5

sudo swapoff -a
systemctl disable dphys-swapfile.service
vi /etc/hosts

Docker

https://docs.docker.com/engine/install/ubuntu/##install-using-the-repository

재부팅할떄 언제나 실행

sudo systemctl enable docker.service
sudo systemctl enable containerd.service

minikube, k9s tools and start minikube

https://minikube.sigs.k8s.io/docs/handbook/accessing/

minikube: 로컬 k8s cluster
k9s: cli로 쓰는 kubectl
kubectx: 쉽게 context, ns 전환 (minikube에선 kubens <namespace> 만 씀
helm: k8s chart 설치를 위한 툴

$ brew install minikube k9s kubectx helm stern

$ minikube start --extra-config=apiserver.service-node-port-range=1-65535
$ minikube tunnel

Ingress (reference)

minikube에서 ingress 설치

$ minikube addons enable ingress
$ HOST=MY_HOST
$ sudo sh -c "echo $(minikube ip) $HOST >> /etc/hosts"

Redash with postgresql (helm)

Redash is designed to enable anyone, regardless of the level of technical sophistication, to harness the power of data big and small. SQL users leverage Redash to explore, query, visualize, and share data from any data sources. Their work in turn enables anybody in their organization to use the data. Every day, millions of users at thousands of organizations around the world use Redash to develop insights and make data-driven decisions.

## ns 생성
$ kubectl create namespace redash
$ kubens redash

$ helm repo add redash https://getredash.github.io/contrib-helm-chart/

$ cd cruise-values ## my local values directory
$ helm upgrade --install -f redash/values.yaml redash ../../getredash/contrib-helm-chart

### invite user url
redash-pod $ USER_ID=1 ## from DB
redash-pod $ python -c "from itsdangerous import URLSafeTimedSerializer; serializer = URLSafeTimedSerializer('$REDASH_SECRET_KEY'); print(f'$REDASH_HOST/invite/{serializer.dumps($USER_ID)}')"

Reverse Proxy (Node to Minikube)(reference)

If you have multiple servers, a reverse proxy can help balance loads between servers and improve performance. As a reverse proxy provides a single point of contact for clients, it can centralize logging and report across multiple servers.

$ sudo apt-get install nginx -y
$ sudo unlink /etc/nginx/sites-enabled/default
$ sudo sh -c 'echo "
server {
  listen 80;
  server_name redash.googleanalytics.ga;
  location / {
    proxy_pass http://minikube:5000;
  }
}
" > /etc/nginx/sites-available/custom_server.conf'
$ sudo ln -s /etc/nginx/sites-available/custom_server.conf /etc/nginx/sites-enabled/custom_server.conf
$ sudo service nginx configtest && sudo service nginx restart

Create Database in postgresql

$ kubectl exec -it redash-postgresql-0 -nredash bash

redash-postgresql-0:/$ psql -U redash
Password for user redash: ### typing password

redash=> CREATE DATABASE crawler;
CREATE DATABASE

redash=> select * from pg_database;
## db 생성됐는지 쳌

Install Crawler

GitHub - moonsub-kim/crawl-data-slack

$ kubectl create namespace crawler
$ kubens crawler

$ cd moonsub-kim/crawl-data-slack
crawl-data-slack $ helm upgrade crawler helm/crawl-data-slack -f ../cruise-values/crawler/values.yaml -i

freenom

Minikube ingress with reverse proxy

## install the nginx ingress addon
$ minikube addons enable ingress

## route "minikube" to the minikube cluster
$ HOST=minikube
$ sudo sh -c "echo $(minikube ip) $HOST >> /etc/hosts"

## test
$ curl minikube

## install nginx to use reverse proxy
$ sudo apt-get install nginx -y
$ sudo unlink /etc/nginx/sites-enabled/default

#### route localhost:80 to "minikube"
## server {
##   listen 80;
##   server_name anstjq.ml;
##
##   location / {
##     return 301 https://gos16052.notion.site/Blog-6dba24938a63473788e7866acbe38526;
##   }
## }
##
## server {
##   listen 80;
##   server_name redash.anstjq.ml;
##
##   location / {
##     proxy_pass http://redash;
##   }
## }
$ sudo cp nginx/custom_server.conf > /etc/nginx/sites-available/custom_server.conf'
$ sudo ln -s /etc/nginx/sites-available/custom_server.conf /etc/nginx/sites-enabled/custom_server.conf
$ sudo service nginx configtest && sudo service nginx restart

freenom.com - free domain