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