Guides

Grafana

This guide shows you how to use Grafana, the open source analytics & monitoring solution for every database.

To run it, follow these steps:

1. Install the kraft CLI tool and a container runtime engine, e.g. Docker.

2. Clone the examples repository and cd into the examples/grafana/ directory:

Code
 
git clone https://github.com/kraftcloud/examples
cd examples/grafana/

Make sure to log into Unikraft Cloud by setting your token and a metro close to you. We use fra0 (Frankfurt, 🇩🇪) in this guide:

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# Set Unikraft Cloud access token
export UKC_TOKEN=token
# Set metro to Frankfurt, DE
export UKC_METRO=fra0

When done, invoke the following command to deploy this application on Unikraft Cloud:

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kraft cloud deploy -p 443:3000 -M 1024 .

The output shows the instance URL and other details:

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[●] Deployed successfully!
 │
 ├────────── name: grafana-sikrv
 ├────────── uuid: 1d8f0b36-39ff-45a2-8baa-664640c60885
 ├───────── state: running
 ├─────────── url: https://icy-sea-i6m5fwyk.fra0.kraft.host
 ├───────── image: grafana@sha256:484d6f98cdc321443188b8f2900035182dffdb45069f3cd087dcb6851ddff3bc
 ├───── boot time: 502.65 ms
 ├──────── memory: 1024 MiB
 ├─────── service: dawn-water-4jlnvgpy
 ├── private fqdn: grafana-mgby4.internal
 ├──── private ip: 172.16.6.6
 └────────── args: /usr/share/grafana/bin/grafana server -homepath /usr/share/grafana/

In this case, the instance name is grafana-sikrv and the URL is https://icy-sea-i6m5fwyk.fra0.kraft.host. They are different for each run.

To test, simply point your browser at the URL. The default account/password are admin/admin (you'll be prompted to change the password).

At any point in time, you can list information about the instance:

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kraft cloud instance list

Code
 
NAME             FQDN                               STATE    CREATED AT      IMAGE                            MEMORY   ARGS                             BOOT TIME
memcached-arkv7  weathered-smoke-hehsdinv.fra0....  running  11 minutes ago  memcached@sha256:f53cdbce4...    256 MiB  /usr/bin/memcached -u root       19266us

When done, you can remove the instance:

Code
 
kraft cloud instance remove grafana-sikrv

Customize your Application

To customize the application, update the files in the repository, listed below:

• Kraftfile: the Unikraft Cloud specification, including command-line arguments
• Dockerfile: In case you need to add files to your instance's rootfs

The following options are available for customizing the application:

• If new files are added, these have to be copied in the application filesystem, using the COPY command in the Dockerfile. See the commented out COPY command in the Dockerfile.

• If a new executable is used, update the cmd line in the Kraftfile and replace /usr/share/grafana/bin/grafana with the path to the new executable.

• More extensive changes may require expanding the Dockerfile with additional Dockerfile commands.

Learn More

Use the --help option for detailed information on using Unikraft Cloud:

Code
 
kraft cloud --help

Or visit the CLI Reference.