pocs de observasbilidade k8s env

Projeto para configuração do backend para testes com o projeto golang-observability-poc.

Decidi tentar configurar um cluster k8s numa Raspberry que tinha aqui de bobeira, assim eu libero recursos na máquina local pra facilitar minha vida.

## colocar o conteudo abaixo no arquivo /boot/cmdline.txt
# cgroup_memory=1 cgroup_enable=memory
sudo vim /boot/cmdline.txt

## instalar o k3s
curl -sfL https://get.k3s.io | sh -

cat /etc/rancher/k3s/k3s.yaml

vim  ~/.kube/config

ansible -i cluster/ansible/env/ all -m ping -v

opensearch validations

# opensearch

## healthchceck
curl --insecure -XGET https://192.168.100.195:9200/_cluster/health -u 'admin:admin' | jq .

## cat indexes
curl --insecure -i https://192.168.100.195:9200/_cat/indices?v -u 'admin:admin'

# dashboards
curl --insecure -XGET 'http://192.168.100.195:5601/api/saved_objects/_find?type=index-pattern&search_fields=title&search=*application*' -u 'admin:admin'

curl --insecure -XGET 'http://192.168.100.195:9200/custom-application-logs-00001' -u 'admin:admin'

reference links

• Generating self-signed certificates - OpenSearch
• skywalking/docker/docker-compose.yml - Github
• rpi4cluster.com