mirror of
https://github.com/jbowdre/runtimeterror.git
synced 2024-11-22 06:52:18 +00:00
update draft
This commit is contained in:
parent
957712679c
commit
583ff47c37
1 changed files with 177 additions and 2 deletions
|
|
@ -3,7 +3,7 @@ title: "Easy Push Notifications With ntfy.sh"
|
|||
date: 2023-09-11
|
||||
# lastmod: 2023-09-11
|
||||
draft: true
|
||||
description: "Deploying and configuring a self-hosted pub-sub notification handler, and getting another server to send a notifcation when it boots."
|
||||
description: "Deploying and configuring a self-hosted pub-sub notification handler, getting another server to send a notifcation when it boots, and integrating the notification handler in Home Assistant."
|
||||
featured: false
|
||||
toc: true
|
||||
comment: true
|
||||
|
|
@ -14,9 +14,184 @@ tags:
|
|||
- automation
|
||||
- containers
|
||||
- docker
|
||||
- homelab
|
||||
- homeassistant
|
||||
- linux
|
||||
- rest
|
||||
- selfhosting
|
||||
- shell
|
||||
---
|
||||
|
||||
Wouldn't it be great if there was a simple way to send a notification to your phone(s) with a simple `curl` call? Then you could get notified when a script completes, or a server reboots, a user logs in to a system, or a sensor connected to Home Assistant changes state. How great would that be??
|
||||
|
||||
[ntfy.sh](https://ntfy.sh) (pronounced *notify*) provides just that. It's an [open-source](https://github.com/binwiederhier/ntfy), easy-to-use, HTTP-based [pub-sub](https://en.wikipedia.org/wiki/Publish%E2%80%93subscribe_pattern) notification service, and it can notify using either mobile apps for Android ([Play](https://play.google.com/store/apps/details?id=io.heckel.ntfy) or [F-Droid](https://f-droid.org/en/packages/io.heckel.ntfy/)) or iOS ([App Store](https://apps.apple.com/us/app/ntfy/id1625396347)) or a [web app](https://ntfy.sh/app). I thought it sounded pretty compelling - and *then* I notice that [ntfy's docs](https://docs.ntfy.sh/install/) made it sound really easy to self-host the server component.
|
||||
|
||||
So let's take it for a spin!
|
||||
|
||||
## Installation
|
||||
I'm going to use the [Docker setup](https://docs.ntfy.sh/install/#docker) on an existing cloud server and use [Caddy](https://caddyserver.com/) as a reverse proxy.[^caddy]
|
||||
|
||||
So I'll start by creating a new directory at `/opt/ntfy/` to hold the goods, and create a compose config.
|
||||
`/opt/ntfy/docker-compose.yml`:
|
||||
```yaml
|
||||
version: "2.3"
|
||||
|
||||
services:
|
||||
ntfy:
|
||||
image: binwiederhier/ntfy
|
||||
container_name: ntfy
|
||||
command:
|
||||
- serve
|
||||
environment:
|
||||
- TZ=UTC # optional: set desired timezone
|
||||
volumes:
|
||||
- ./cache/ntfy:/var/cache/ntfy
|
||||
- ./etc/ntfy:/etc/ntfy
|
||||
- ./lib/ntf:/var/lib/ntfy
|
||||
ports:
|
||||
- 8080:80
|
||||
healthcheck: # optional: remember to adapt the host:port to your environment
|
||||
test: ["CMD-SHELL", "wget -q --tries=1 http://localhost:8080/v1/health -O - | grep -Eo '\"healthy\"\\s*:\\s*true' || exit 1"]
|
||||
interval: 60s
|
||||
timeout: 10s
|
||||
retries: 3
|
||||
start_period: 40s
|
||||
restart: unless-stopped
|
||||
```
|
||||
|
||||
This config will create/mount folders in the working directory to store the ntfy cache and config
|
||||
|
||||
|
||||
I can go ahead and bring it up:
|
||||
```shell
|
||||
sudo docker-compose up -d
|
||||
```
|
||||
|
||||
I'll also want to add the following to my Caddy config:
|
||||
`/etc/caddy/Caddyfile`:
|
||||
```
|
||||
ntfy.example.com, http://ntfy.example.com {
|
||||
reverse_proxy localhost:8080
|
||||
@httpget {
|
||||
protocol http
|
||||
method GET
|
||||
path_regexp ^/([-_a-z0-9]{0,64}$|docs/|static/)
|
||||
}
|
||||
redir @httpget https://{host}{uri}
|
||||
}
|
||||
```
|
||||
|
||||
And I'll restart Caddy to apply the config:
|
||||
```shell
|
||||
sudo systemctl restart caddy
|
||||
```
|
||||
|
||||
[^caddy]: I'm a big fan of Caddy. It may not be quite as capable/flexible as `nginx` but I love how simple it makes most configurations. Using Caddy in this will will not only enable HTTPS for the new web service but will also automatically obtain/renew LetsEncrypt certs so that I don't even have to think about it.
|
||||
|
||||
## Configuration
|
||||
`/opt/ntfy/etc/ntfy/server.yml`:
|
||||
```yaml
|
||||
auth-file: "/var/lib/ntfy/user.db"
|
||||
auth-default-access: "deny-all"
|
||||
base-url: "https://ntfy.example.com"
|
||||
```
|
||||
|
||||
```shell
|
||||
sudo docker-compose down && sudo docker-compose up -d
|
||||
sudo docker exec -it ntfy /bin/sh
|
||||
ntfy user add --role=admin admin_user
|
||||
ntfy user add writer
|
||||
ntfy token add writer
|
||||
ntfy access writer ping write-only
|
||||
```
|
||||
|
||||
## Usage
|
||||
|
||||
```shell
|
||||
curl \
|
||||
-u "writer:$password" \
|
||||
-d "My first notification" \
|
||||
https://ntfy.example.com/ping
|
||||
|
||||
curl \
|
||||
-H "Authorization: Bearer $token" \
|
||||
-H "Title: Here's a Message Title" \
|
||||
-d "This is the message body" \
|
||||
https://ntfy.example.com/ping
|
||||
```
|
||||
|
||||
### Notify on boot
|
||||
|
||||
`/usr/local/bin/ntfy_push.sh`:
|
||||
```shell
|
||||
#!/usr/bin/env bash
|
||||
|
||||
curl \
|
||||
-H "Authorization: Bearer $TOKEN" \
|
||||
-H "Title: $1" \
|
||||
-d "$2" \
|
||||
https://ntfy.example.com/ping
|
||||
```
|
||||
|
||||
`/usr/local/bin/ntfy_boot_complete.sh`:
|
||||
```shell
|
||||
#!/usr/bin/env bash
|
||||
|
||||
TITLE="$(hostname -s)"
|
||||
MESSAGE="System boot complete"
|
||||
|
||||
/usr/local/bin/ntfy_push.sh "$TITLE" "$MESSAGE"
|
||||
```
|
||||
|
||||
`/etc/systemd/system/ntfy_boot_complete.service`:
|
||||
```
|
||||
[Unit]
|
||||
After=network.target
|
||||
|
||||
[Service]
|
||||
ExecStart=/usr/local/bin/ntfy_boot_complete.sh
|
||||
|
||||
[Install]
|
||||
WantedBy=default.target
|
||||
```
|
||||
|
||||
```shell
|
||||
sudo systemctl daemon-reload
|
||||
sudo systemctl enable --now ntfy_boot_complete.service
|
||||
```
|
||||
|
||||
### Home Assistant
|
||||
`configuration.yaml`:
|
||||
```yaml
|
||||
notify:
|
||||
- name: ntfy
|
||||
platform: rest
|
||||
method: POST_JSON
|
||||
authentication: basic
|
||||
username: writer
|
||||
password: $PASSWORD
|
||||
data:
|
||||
topic: ping
|
||||
title_param_name: title
|
||||
message_param_name: message
|
||||
resource: https://ntfy.example.com
|
||||
```
|
||||
|
||||
`automations.yaml`:
|
||||
```yaml
|
||||
- alias: Water Leak Detection
|
||||
description: ''
|
||||
trigger:
|
||||
- platform: state
|
||||
entity_id:
|
||||
- binary_sensor.water_6
|
||||
- binary_sensor.water_3
|
||||
- binary_sensor.water_5
|
||||
from: 'off'
|
||||
to: 'on'
|
||||
condition: []
|
||||
action:
|
||||
- service: notify.ntfy
|
||||
data:
|
||||
title: Leak detected!
|
||||
message: '{{ trigger.to_state.attributes.friendly_name }} detected.'
|
||||
```
|
||||
Loading…
Reference in a new issue