digitalstudium.com/content/en/linux-lifehacks/linux-monitoring-with-telegram-alerts.md

---
title: "Linux: How to set up monitoring with alerts to Telegram"
category: linux-lifehacks
filename: linux-monitoring-with-telegram-alerts
date: 2023-03-04
---
This article describes how to set up monitoring with alerts to Telegram using Grafana, Prometheus, Alertmanager, Node-exporter and Cadvisor.
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### First step: Cloning the repository
Log in to the server or go to local terminal and run the following commands:
```bash
git clone https://github.com/digitalstudium/grafana-docker-stack.git
cd grafana-docker-stack
git checkout alertmanager
```
### Second step: setting the external address of the server
Open the `docker-compose.yml` file and on lines 22 and 38 change the address `127.0.0.1` to the address of the server where you want to install Prometheus.
### Third step: creating a bot in Telegram
In the Telegram search, type `Botfather` and follow the first link:

![Botfather search](/images/botfather1.png "Botfather search")

Then press `Start`:

![Botfather start](/images/botfather2.png "Botfather start")

After that, create a bot using the `Botfather` instructions.
As a result, you should receive a message with an API token:

![Botfather API token](/images/botfather3.png "Botfather API token")

Copy this token and paste it on line 14 of the `configs/alertmanager.yml` file as the value of the `bot_token` parameter.

Then create a telegram group and add the created bot to this group. This group will receive notifications (alerts).

### Fourth step: Get the group id
In the group you added the bot to, write some command, for example: `/my_id foobar`

Then in the browser follow the link
`https://api.telegram.org/botINSERT_BOT_TOKEN_HERE/getUpdates` replacing `INSERT_BOT_TOKEN_HERE` with the token created in step 3.
You should get something like this page:

![Telegram getting chat id](/images/chat_id.png "Telegram getting chat id")
If there is nothing on your page, try sending the command `/my_id foobar` to the group again.

You need to copy the chat id value from this page and paste it on line 15 of the `configs/alertmanager.yml` file as the value of the `chat_id` parameter. Note that the value of the `chat_id` parameter must be without quotes and with a hyphen at the beginning.

### Fifth step: Deploying the docker stack
While in the `grafana-docker-stack` folder, run the following commands:
```bash
docker swarm init
docker stack deploy -c docker-compose.yml monitoring
```
Wait 5-10 minutes then run the command
```bash
docker ps
```

The command output should contain 5 containers: prometheus, grafana, alertmanager, node-exporter, grafana.
```plaintext
CONTAINER ID   IMAGE                              COMMAND                  CREATED      STATUS                PORTS                       NAMES
46fba26e7234   gcr.io/cadvisor/cadvisor:v0.47.0   "/usr/bin/cadvisor -…"   5 days ago   Up 5 days (healthy)   8080/tcp                    monitoring_cadvisor.1.q02qcn798dh0rydo1dzslylse
f212e3c66786   prom/alertmanager:v0.25.0          "/bin/alertmanager -…"   6 days ago   Up 6 days             9093/tcp                    monitoring_alertmanager.1.oysziztrqnur7xr0hr82avunz
c16fb14929e2   prom/prometheus:v2.42.0            "/bin/prometheus --c…"   6 days ago   Up 6 days             9090/tcp                    monitoring_prometheus.1.yslspi4fgjp7ic4f5e18gm99a
9bf01ce6b7a1   grafana/grafana:9.3.6-ubuntu       "/run.sh"                6 days ago   Up 6 days             3000/tcp                    monitoring_grafana.1.mypn85x12xw37ucprr33knuwk
58efdb46f5c3   kindest/node:v1.25.3               "/usr/local/bin/entr…"   6 days ago   Up 6 days             127.0.0.1:46579->6443/tcp   kind-control-plane
ae15e453e517   prom/node-exporter:v1.5.0          "/bin/node_exporter …"   7 days ago   Up 7 days             9100/tcp                    monitoring_node-exporter.1.uecim10ow12h1qlpox5lg0c5r
```
If you see this output, then everything turned out successfully. If not, try repeating all previous steps.

### Sixth step: Check if it works

Go to [server ip-address or domain name]:3000
You should get Grafana opened. Enter login `admin` and password `admin`. Grafana will ask you to change your password, change it to any other.
Under Dashboard -> Browse -> General you will see 2 dashboards: Cadvisor exporter and Node Exporter Full. Open them and make sure everything works.

## Summary
Now you can evaluate server performance through Grafana graphs.
You will also receive alerts about problems with the server in the Telegram group. Alert rules can be configured in `configs/prometheus/alert_rules.yml`