Grafana-agent-k8s Terraform Module

This Grafana-agent-k8s Terraform module aims to deploy the grafana-agent-k8s charm via Terraform.

Getting Started

Install requirements

The following software and tools needs to be installed and should be running in the local environment.

• microk8s
• juju 3.x
• terrafom

Install Microk8s:

sudo snap install microk8s --channel=1.27-strict/stable
sudo usermod -a -G snap_microk8s $USER
newgrp snap_microk8s

Enable storage plugin for Microk8s:

sudo microk8s enable hostpath-storage

Install Juju:

sudo snap install juju --channel=3.1/stable

Install Terraform:

sudo snap install --classic terraform

Bootstrap the Juju using Microk8s and create a model to deploy Terraform module

Bootstrap Juju Controller:

juju bootstrap microk8s

Add a Juju model:

juju add model <model-name>

Deploy Mongodb-k8s using Terraform

Initialise the provider:

terraform init

Customize the configuration inputs under terraform.tfvars file according to requirement. Make sure that given model-name exists.

Sample contents of terraform.tfvars file:

model_name =<fill here>
metrics_remote_write_offer_url =<fill here>
logging_offer_url =<fill here>

Run Terraform Plan by providing var-file:

terraform plan -var-file="terraform.tfvars" 

Deploy the resources, skip the approval

terraform apply -auto-approve 

Check the Output

Run juju switch <juju model> to switch to the target Juju model and observe the status of the application.

juju status

The output should be similar to the following. The charm is blocked until the relations are joined.

Model    Controller          Cloud/Region        Version  SLA          Timestamp
test  microk8s-localhost  microk8s/localhost  3.1.7    unsupported  15:57:12+03:00

App                Version  Status   Scale  Charm              Channel        Rev  Address         Exposed  Message
grafana-agent-k8s  0.32.1   waiting      1  grafana-agent-k8s  latest/stable   51  10.152.183.195  no       installing agent

Unit                  Workload  Agent  Address      Ports  Message
grafana-agent-k8s/0*  blocked   idle   10.1.146.47         Missing incoming ('requires') relation

Clean up

Remove the application:

terraform destroy -auto-approve