how to deploy grafana loki on kubernetes1.19

1. install helm(centos8)

   curl -fsSL -o get_helm.sh https://raw.githubusercontent.com/helm/helm/master/scripts/get-helm-3
   chmod +x get_helm.sh
   ./get_helm.sh
   ln -s /usr/local/bin/helm /usr/bin/helm
   

2. install loki

   helm repo add loki https://grafana.github.io/loki/charts
   helm repo update
   kubectl create ns loki
   helm upgrade --install loki --namespace=loki loki/loki
   

3. add data source in grafana

   http://loki.loki:3100
   

4. deploy fluentbit

   helm upgrade --install fluent-bit loki/fluent-bit --set loki.serviceName=loki.loki.svc.cluster.local
   

5. references:

   https://grafana.com/docs/loki/latest/installation/helm/

   https://github.com/grafana/loki/blob/master/cmd/promtail/promtail-local-config.yaml

   https://grafana.com/docs/loki/latest/clients/fluentbit/