Uptime Kuma with Caddy proxy, Ntfy and email notifications

This docker-compose.yml project makes it really simple to deploy a self hosted uptime monitoring system with Uptime Kuma and Caddy as a reverse proxy with TLS support.

It also includes Ntfy for push notifications to your phone, and email notifications.

Prerequisites

• A linux server with a public IP address. You can get one for free from Oracle Cloud or Google Cloud.

• Docker and Compose installed and running on your system.

• A domain name. If you host your DNS with Cloudflare, you can use their API to automatically deploy and renew TLS certificates with Caddy.

• An account in any mail service provider that supports SMTP.

Installation

1. Clone this repository:

   git clone git@github.com:jschwindt/uptime-kuma-caddy-ntfy-smtp.git
   cd uptime-kuma-caddy-ntfy-smtp

2. Copy the .env.example file to .env and fill in the required values:

   cp .env.example .env

   The .env file needs updates to the following variables:

   Variable	Description
   KUMA_BASE_URL	Your https base url for the uptime service.
   NTFY_BASE_URL	Your https base url for the ntfy service.
   CLOUDFLARE_EMAIL	Your Cloudflare account email.
   CLOUDFLARE_API_TOKEN	The token for Caddy to handle DNS changes in Cloudflare. Get it here with DNS:Edit permissions.
   RELAY_xxxx	The config for your SMTP service provider account. The example given is for the Sendgrid service.

3. Start the containers:

   docker-compose up -d

   The first time you run this command, it will take a while to download the images and build the containers.

   Check the logs to see if everything is working:

   docker-compose logs -f

4. Create a new admin user for ntfy. Follow the instruction in the help message or see here:

   docker compose exec -it ntfy ntfy user add --role=admin --help

   With those credentials, you can log in to the ntfy web interface at https://ntfy.yourdomain.com/ and create a new notification channel and an API key to use later in the uptime configuration.

5. Finally go to the uptime web interface at https://uptime.yourdomain.com/, create a new user and start adding monitors. Use the following settings for the notification channels:

   Notification Type	Settings
   Email (SMTP)	Hostname: smtp, Port: 25, Security: None / STARTTLS (25, 587)
   Ntfy	Server URL: https://ntfy.example.com (the same in .env), Authentication Method: Username and Password or Access Token