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Installation

To install Hydrus, follow one of these options:

  1. Download the pre-compiled binaries from the releases page.
  2. Compile it yourself from source code (Go required)
go build -o hydrus -ldflags="-s -w" .
# or
go install -ldflags="-s -w" .
  1. Build the Docker image
docker build -t hydrus .

Systemd

To run Hydrus in the background, the recommended way of doing it is with systemd. Follow the steps below to create and start a service.

  1. Create a service, check out hydrus.service for a sample file.

  2. Enable and start the service

sudo systemctl daemon-reload
sudo systemctl enable hydrus.service
sudo systemctl start hydrus.service

Note

To run the agent on a specific day/time, use systemd-run --on-calendar=<date> systemctl start hydrus.service or a timer (see hydrus.timer).

Cron

Scheduling tasks using cron is much simpler, but it has some disadvantages like no failover mechanisms or logs recording. To persist the logs, redirect the standard streams to a file.

To run hydrus chanenls open command using cron, edit the cron tab with crontab -e and paste the following line

0 20 * * 6 /usr/local/bin/hydrus channels open

This will instruct hydrus to look for new nodes to open channels with every Saturday at 20:00 (8PM).