Integrate with COS

In this guide, we will cover how-to integrate the LEGO charm with Canonical Observability Stack (COS) for Logging. Here we assume that LEGO is deployed in a Kubernetes model.

Pre-requisites:

• Juju >= 3.4

1. Deploy COS Lite

Create a model for observability:

juju add-model cos

Deploy cos lite:

juju deploy cos-lite --trust

Create an offer for the logging interface:

juju offer cos.loki:logging

2. Integrate with COS

Switch to the model in which the LEGO charm is deployed:

juju switch <your lego model>

Deploy Grafana Agent:

juju deploy grafana-agent-k8s

Integrate the LEGO charm with Grafana Agent:

juju integrate <lego charm>:logging grafana-agent-k8s

Consume the COS offers:

juju consume cos.loki

Integrate Grafana Agent with COS:

juju integrate loki:logging grafana-agent-k8s:logging-consumer

4. Access Logs

Switch to the cos model:

juju switch cos

Retrieve the Grafana admin password:

juju switch cos
juju run grafana/leader get-admin-password

Log in Grafana’s dashboard, navigate to “Explore” and select Loki as the source.