ntfy/docs/examples.md
2022-06-16 15:53:15 -04:00

469 lines
13 KiB
Markdown

# Examples
There are a million ways to use ntfy, but here are some inspirations. I try to collect
<a href="https://github.com/binwiederhier/ntfy/tree/main/examples">examples on GitHub</a>, so be sure to check
those out, too.
!!! info
Many of these examples were contributed by ntfy users. If you have other examples of how you use ntfy, please
[create a pull request](https://github.com/binwiederhier/ntfy/pulls), and I'll happily include it. Also note, that
I cannot guarantee that all of these examples are functional. Many of them I have not tried myself.
## Cronjobs
ntfy is perfect for any kind of cronjobs or just when long processes are done (backups, pipelines, rsync copy commands, ...).
I started adding notifications pretty much all of my scripts. Typically, I just chain the <tt>curl</tt> call
directly to the command I'm running. The following example will either send <i>Laptop backup succeeded</i>
or ⚠️ <i>Laptop backup failed</i> directly to my phone:
```
rsync -a root@laptop /backups/laptop \
&& zfs snapshot ... \
&& curl -H prio:low -d "Laptop backup succeeded" ntfy.sh/backups \
|| curl -H tags:warning -H prio:high -d "Laptop backup failed" ntfy.sh/backups
```
Here's one for the history books. I desperately want the `github.com/ntfy` organization, but all my tickets with
GitHub have been hopeless. In case it ever becomes available, I want to know immediately.
``` cron
# Check github/ntfy user
*/6 * * * * if curl -s https://api.github.com/users/ntfy | grep "Not Found"; then curl -d "github.com/ntfy is available" -H "Tags: tada" -H "Prio: high" ntfy.sh/my-alerts; fi
```
## Low disk space alerts
Here's a simple cronjob that I use to alert me when the disk space on the root disk is running low. It's simple, but
effective.
``` bash
#!/bin/bash
mingigs=10
avail=$(df | awk '$6 == "/" && $4 < '$mingigs' * 1024*1024 { print $4/1024/1024 }')
topicurl=https://ntfy.sh/mytopic
if [ -n "$avail" ]; then
curl \
-d "Only $avail GB available on the root disk. Better clean that up." \
-H "Title: Low disk space alert on $(hostname)" \
-H "Priority: high" \
-H "Tags: warning,cd" \
$topicurl
fi
```
## SSH login alerts
Years ago my home server was broken into. That shook me hard, so every time someone logs into any machine that I
own, I now message myself. Here's an example of how to use <a href="https://en.wikipedia.org/wiki/Linux_PAM">PAM</a>
to notify yourself on SSH login.
=== "/etc/pam.d/sshd"
```
# at the end of the file
session optional pam_exec.so /usr/bin/ntfy-ssh-login.sh
```
=== "/usr/bin/ntfy-ssh-login.sh"
```bash
#!/bin/bash
if [ "${PAM_TYPE}" = "open_session" ]; then
curl \
-H prio:high \
-H tags:warning \
-d "SSH login: ${PAM_USER} from ${PAM_RHOST}" \
ntfy.sh/alerts
fi
```
## Collect data from multiple machines
The other day I was running tasks on 20 servers, and I wanted to collect the interim results
as a CSV in one place. Each of the servers was publishing to a topic as the results completed (`publish-result.sh`),
and I had one central collector to grab the results as they came in (`collect-results.sh`).
It looked something like this:
=== "collect-results.sh"
```bash
while read result; do
[ -n "$result" ] && echo "$result" >> results.csv
done < <(stdbuf -i0 -o0 curl -s ntfy.sh/results/raw)
```
=== "publish-result.sh"
```bash
// This script was run on each of the 20 servers. It was doing heavy processing ...
// Publish script results
curl -d "$(hostname),$count,$time" ntfy.sh/results
```
## Ansible, Salt and Puppet
You can easily integrate ntfy into Ansible, Salt, or Puppet to notify you when runs are done or are highstated.
One of my co-workers uses the following Ansible task to let him know when things are done:
```yml
- name: Send ntfy.sh update
uri:
url: "https://ntfy.sh/{{ ntfy_channel }}"
method: POST
body: "{{ inventory_hostname }} reseeding complete"
```
## Watchtower (shoutrrr)
You can use [shoutrrr](https://github.com/containrrr/shoutrrr) generic webhook support to send
[Watchtower](https://github.com/containrrr/watchtower/) notifications to your ntfy topic.
Example docker-compose.yml:
```yml
services:
watchtower:
image: containrrr/watchtower
environment:
- WATCHTOWER_NOTIFICATIONS=shoutrrr
- WATCHTOWER_NOTIFICATION_URL=generic+https://ntfy.sh/my_watchtower_topic?title=WatchtowerUpdates
```
Or, if you only want to send notifications using shoutrrr:
```
shoutrrr send -u "generic+https://ntfy.sh/my_watchtower_topic?title=WatchtowerUpdates" -m "testMessage"
```
## Sonarr, Radarr, Lidarr, Readarr, Prowlarr, SABnzbd
It's possible to use custom scripts for all the *arr services, plus SABnzbd. Notifications for downloads, warnings, grabs etc.
Some simple bash scripts to achieve this are kindly provided in [nickexyz's repository](https://github.com/nickexyz/ntfy-shellscripts).
## Node-RED
You can use the HTTP request node to send messages with [Node-RED](https://nodered.org), some examples:
<details>
<summary>Example: Send a message (click to expand)</summary>
``` json
[
{
"id": "c956e688cc74ad8e",
"type": "http request",
"z": "fabdd7a3.4045a",
"name": "ntfy.sh",
"method": "POST",
"ret": "txt",
"paytoqs": "ignore",
"url": "https://ntfy.sh/mytopic",
"tls": "",
"persist": false,
"proxy": "",
"authType": "",
"senderr": false,
"credentials":
{
"user": "",
"password": ""
},
"x": 590,
"y": 3160,
"wires":
[
[]
]
},
{
"id": "32ee1eade51fae50",
"type": "function",
"z": "fabdd7a3.4045a",
"name": "data",
"func": "msg.payload = \"Something happened\";\nmsg.headers = {};\nmsg.headers['tags'] = 'house';\nmsg.headers['X-Title'] = 'Home Assistant';\n\nreturn msg;",
"outputs": 1,
"noerr": 0,
"initialize": "",
"finalize": "",
"libs": [],
"x": 470,
"y": 3160,
"wires":
[
[
"c956e688cc74ad8e"
]
]
},
{
"id": "b287e59cd2311815",
"type": "inject",
"z": "fabdd7a3.4045a",
"name": "Manual start",
"props":
[
{
"p": "payload"
},
{
"p": "topic",
"vt": "str"
}
],
"repeat": "",
"crontab": "",
"once": false,
"onceDelay": "20",
"topic": "",
"payload": "",
"payloadType": "date",
"x": 330,
"y": 3160,
"wires":
[
[
"32ee1eade51fae50"
]
]
}
]
```
</details>
![Node red message flow](static/img/nodered-message.png)
<details>
<summary>Example: Send a picture (click to expand)</summary>
``` json
[
{
"id": "d135a13eadeb9d6d",
"type": "http request",
"z": "fabdd7a3.4045a",
"name": "Download image",
"method": "GET",
"ret": "bin",
"paytoqs": "ignore",
"url": "https://www.google.com/images/branding/googlelogo/1x/googlelogo_color_272x92dp.png",
"tls": "",
"persist": false,
"proxy": "",
"authType": "",
"senderr": false,
"credentials":
{
"user": "",
"password": ""
},
"x": 490,
"y": 3320,
"wires":
[
[
"6e75bc41d2ec4a03"
]
]
},
{
"id": "6e75bc41d2ec4a03",
"type": "function",
"z": "fabdd7a3.4045a",
"name": "data",
"func": "msg.payload = msg.payload;\nmsg.headers = {};\nmsg.headers['tags'] = 'house';\nmsg.headers['X-Title'] = 'Home Assistant - Picture';\n\nreturn msg;",
"outputs": 1,
"noerr": 0,
"initialize": "",
"finalize": "",
"libs": [],
"x": 650,
"y": 3320,
"wires":
[
[
"eb160615b6ceda98"
]
]
},
{
"id": "eb160615b6ceda98",
"type": "http request",
"z": "fabdd7a3.4045a",
"name": "ntfy.sh",
"method": "PUT",
"ret": "bin",
"paytoqs": "ignore",
"url": "https://ntfy.sh/mytopic",
"tls": "",
"persist": false,
"proxy": "",
"authType": "",
"senderr": false,
"credentials":
{
"user": "",
"password": ""
},
"x": 770,
"y": 3320,
"wires":
[
[]
]
},
{
"id": "5b8dbf15c8a7a3a5",
"type": "inject",
"z": "fabdd7a3.4045a",
"name": "Manual start",
"props":
[
{
"p": "payload"
},
{
"p": "topic",
"vt": "str"
}
],
"repeat": "",
"crontab": "",
"once": false,
"onceDelay": "20",
"topic": "",
"payload": "",
"payloadType": "date",
"x": 310,
"y": 3320,
"wires":
[
[
"d135a13eadeb9d6d"
]
]
}
]
```
</details>
![Node red picture flow](static/img/nodered-picture.png)
## Gatus
An example for a custom alert with [Gatus](https://github.com/TwiN/gatus):
``` yaml
alerting:
custom:
url: "https://ntfy.sh"
method: "POST"
body: |
{
"topic": "mytopic",
"message": "[ENDPOINT_NAME] - [ALERT_DESCRIPTION]",
"title": "Gatus",
"tags": ["[ALERT_TRIGGERED_OR_RESOLVED]"],
"priority": 3
}
default-alert:
enabled: true
description: "health check failed"
send-on-resolved: true
failure-threshold: 3
success-threshold: 3
placeholders:
ALERT_TRIGGERED_OR_RESOLVED:
TRIGGERED: "warning"
RESOLVED: "white_check_mark"
```
## Jellyseerr/Overseerr webhook
Here is an example for [jellyseerr](https://github.com/Fallenbagel/jellyseerr)/[overseerr](https://overseerr.dev/) webhook
JSON payload. Remember to change the `https://requests.example.com` to your jellyseerr/overseerr URL.
``` json
{
"topic": "requests",
"title": "{{event}}",
"message": "{{subject}}\n{{message}}\n\nRequested by: {{requestedBy_username}}\n\nStatus: {{media_status}}\nRequest Id: {{request_id}}",
"priority": 4,
"attach": "{{image}}",
"click": "https://requests.example.com/{{media_type}}/{{media_tmdbid}}"
}
```
## Home Assistant
Here is an example for the configuration.yml file to setup a REST notify component.
Since Home Assistant is going to POST JSON, you need to specify the root of your ntfy resource.
```yaml
notify:
- name: ntfy
platform: rest
method: POST_JSON
data:
topic: YOUR_NTFY_TOPIC
title_param_name: title
message_param_name: message
resource: https://ntfy.sh
```
If you need to authenticate to your ntfy resource, define the authentication, username and password as below:
```yaml
notify:
- name: ntfy
platform: rest
method: POST_JSON
authentication: basic
username: YOUR_USERNAME
password: YOUR_PASSWORD
data:
topic: YOUR_NTFY_TOPIC
title_param_name: title
message_param_name: message
resource: https://ntfy.sh
```
If you need to add any other [ntfy specific parameters](https://ntfy.sh/docs/publish/#publish-as-json) such as priority, tags, etc., add them to the `data` array in the example yml. For example:
```yaml
notify:
- name: ntfy
platform: rest
method: POST_JSON
data:
topic: YOUR_NTFY_TOPIC
priority: 4
title_param_name: title
message_param_name: message
resource: https://ntfy.sh
```
## Uptime Kuma
Go to your [Uptime Kuma](https://github.com/louislam/uptime-kuma) Settings > Notifications, click on **Setup Notification**.
Then set your desired **title** (e.g. "Uptime Kuma"), **ntfy topic**, **Server URL** and **priority (1-5)**:
<div id="uptimekuma-screenshots" class="screenshots">
<a href="../static/img/uptimekuma-settings.png"><img src="../static/img/uptimekuma-settings.png"/></a>
<a href="../static/img/uptimekuma-setup.png"><img src="../static/img/uptimekuma-setup.png"/></a>
</div>
You can now test the notifications and apply them to monitors:
<div id="uptimekuma-monitor-screenshots" class="screenshots">
<a href="../static/img/uptimekuma-ios-test.jpg"><img src="../static/img/uptimekuma-ios-test.jpg"/></a>
<a href="../static/img/uptimekuma-ios-down.jpg"><img src="../static/img/uptimekuma-ios-down.jpg"/></a>
<a href="../static/img/uptimekuma-ios-up.jpg"><img src="../static/img/uptimekuma-ios-up.jpg"/></a>
</div>
## Apprise
ntfy is integrated natively into [Apprise](https://github.com/caronc/apprise) (also check out the
[Apprise/ntfy wiki page](https://github.com/caronc/apprise/wiki/Notify_ntfy)).
You can use it like this:
```
apprise -vv -t "Test Message Title" -b "Test Message Body" \
ntfy://mytopic
```
Or with your own server like this:
```
apprise -vv -t "Test Message Title" -b "Test Message Body" \
ntfy://ntfy.example.com/mytopic
```