How about OpenWRT and Collectd on DO droplet?

Hello,

Yes, I believe this should be doable. You should be able to configure your DigitalOcean Droplet to act as a central repository for your OpenWRT Collectd data.

You can install Collectd, a web server and a tool for visualizing the Collectd data on your droplet. You can follow the steps on how to install this on the official GitHub repository here:

https://github.com/collectd/collectd/

Or here’s also a high-level guide on how to achieve this.

1. Install Collectd:

On your Debian-based droplet, you can install Collectd with the following command:

sudo apt-get update
sudo apt-get install collectd

2. Configure Collectd:

You would then need to configure Collectd to run in server mode, which can be done by modifying the configuration file typically located at /etc/collectd/collectd.conf. Here’s an example configuration to set up a simple server:

Hostname    "your_hostname"
FQDNLookup   true
BaseDir     "/var/lib/collectd"
PIDFile     "/var/run/collectd.pid"
PluginDir   "/usr/lib/collectd"
TypesDB     "/usr/share/collectd/types.db"

LoadPlugin network

<Plugin network>
  <Listen "0.0.0.0" "25826">
    SecurityLevel None
  </Listen>
</Plugin>

LoadPlugin rrdtool
<Plugin rrdtool>
    DataDir "/var/lib/collectd/rrd"
</Plugin>

In this configuration, Collectd is listening on all interfaces (0.0.0.0) on port 25826, which is the default port for Collectd.

3. Install a Web Server:

Next, you’ll need to install a web server to host the graphs. Nginx or Apache can be installed with:

sudo apt-get install nginx

or

sudo apt-get install apache2

4. Install a Collectd Visualization Tool:

There are several different tools you can use to visualize the data collected by Collectd. Some of the more popular options include:

• Collectd-web: A simple, standalone tool for visualizing Collectd data. Can be run with a simple Python server.
• Grafana: A powerful visualization tool that supports a wide range of data sources including Collectd:

https://www.digitalocean.com/community/tutorials/how-to-install-and-secure-grafana-on-ubuntu-22-04

The installation process will vary depending on the tool you choose. After the installation, configure the tool to read data from the directory where Collectd is storing its data (/var/lib/collectd/rrd in the provided example configuration).

5. Configure Firewall:

Finally, you’ll want to ensure that your firewall is configured to allow incoming connections to your Collectd server and your web server. The exact process will depend on your firewall setup, but here’s how you can do it with UFW:

sudo ufw allow 25826/udp
sudo ufw allow 80/tcp

This will allow incoming connections to the Collectd server (on port 25826) and the web server (on port 80).

The Collectd configuration on your OpenWRT nodes may also need to be updated to send data to the new server.

Best,

Bobby