Deploy Nethermind with Monitoring stack

Below tutorial will guide you through the Nethermind node deployment together with full monitoring stack which consists of:
Grafana with a beautiful, preloaded dashboard to monitor your Nethermind node performance
Prometheus/Pushgateway to pull and push metrics generated by Nethermind client
Seq to have an easy, queriable view of Nethermind client logs 
Prerequisites
​Terraform v0.12.7 < 
​Cloud provider (in this tutorial we will be using Digital Ocean, the terraform recipe can be configured to use any other provider of your choice UpCloud/AWS/Google etc.)
​🛠
 Setting up
First of all let us download repository with necessary files
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git clone https://github.com/NethermindEth/terraform-nethermind
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Let's move to the cloned directory
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cd terraform-nethermind/
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Create a terraform.tfvars file and add these 2 variables
terraform.tfvars
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do_token = "Your DigitalOcean token goes here"
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pvt_key = "path/to/your/private_ssh_key"
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Make sure that the public_key variable in main.tf file points to your Public key path
main.tf
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resource "digitalocean_ssh_key" "key" {
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  name       = "SSH Key Example for "
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  public_key = file("./private.key.pub")
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}
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How to get those variables? (skip this part if you know already)
do_token
Can be generated on DigitalOcean panel. First go to the API management (bottom of the left navigation panel)
Click on the Generate New Token button
Give it a name and generate
Copy the token and place in its spot in terraform.tfvars file
pvt_key
Generate ssh key, we will be using ed25519 algorithm in our example
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ssh-keygen -t ed25519 -a 100 -f private.key
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pvt_key variable will now look like this:
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pvt_key = "./private.key"
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Running the stack
Confirm that terraform can be initialized, run this command from within terraform-templates directory
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terraform init
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You should see a green light in your console
Let's preview our plan before applying and save it so that it can be used in a future
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terraform plan -out myplan
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You can now provide some basic configuration to your VM/Nethermind Node
A list of available configs can be found here​
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 If you chose to enable JsonRpc (it will run on port 8545 by default) make sure that you set up Firewall rules either in DigitalOcean or by using Linux iptables
Let's apply our plan and start deploying whole stack (it should take no longer than 3 minutes)
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terraform apply myplan
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Wait until terraform is done deploying and if everything went smooth you should see
Exploring the stack
Grab the IP of your new Droplet from the DigitalOcean panel
Grafana Dashboard
Go to the YOUR_DROPLET_IP:3000
Login to Grafana with admin:admin credentials and change the password if you wish
Go to YOUR_DROPLET_IP:3000/dashboards endpoint
Click on the Nethermind Dashboard and you should see charts with Nethermind metrics
Prometheus
Go to the YOUR_DROPLET_IP:9090
Explore Nethermind metrics, visualize and analyse using prometheus syntax, a list of available metrics with their descriptions can be found here:
Metrics
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Pushgateway
Go to the YOUR_DROPLET_IP:9091 and verify if metrics are inflowing
Seq
Go to the YOUR_DROPLET_IP:5341, you will be albe to query your Nethermind client logs. Feel free to create some useful Signals, Queries or Dashboards.
Destroying the stack
Use below command to destroy your terraform stack (We will need to provide variables, can be random, once again as we haven't set any default values for them. Hopefully it will change in the future.)
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terraform destroy --auto-approve
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