---
sidebar_label: Telegraf
title: Telegraf for TDengine Cloud
---

Telegraf is a viral, open-source, metrics collection software. Telegraf can collect the operation information of various components without having to write any scripts to collect regularly, reducing the difficulty of data acquisition.

Telegraf's data can be written to TDengine by simply adding the output configuration of Telegraf to the URL corresponding to taosAdapter and modifying several configuration items. The presence of Telegraf data in TDengine can take advantage of TDengine's efficient storage query performance and clustering capabilities for time-series data.

## Install Telegraf

Please refer to the [official documentation](https://docs.influxdata.com/telegraf/v1.22/install/) for Telegraf installation.

## Configuration steps

In the Telegraf configuration file (default location `/etc/telegraf/telegraf.conf`) add an `outputs.http` section.


```conf
[[outputs.http]]
  url = "<url>/influxdb/v1/write?db=telegraf&token=<token>"
  method = "POST"
  timeout = "5s"
  data_format = "influx"
  influx_max_line_bytes = 250
```

<!-- exclude -->
You are expected to replace <url\> and <token\> with TDengine cloud URL and token. To obtain the real value of TDengine URL and token, please log in [TDengine Cloud](https://cloud.tdengine.com)
<!-- exclude-end -->

In above configuration example, all data will be written to database `telegraf`, but you can change it to any database you prefer. The database will be created automatically if it dose not exists in advance.


## Verification plugin

Restart Telegraf service:

```
sudo systemctl restart telegraf
```

Use TDengine CLI to verify Telegraf correctly writing data to TDengine and read out:

```
taos> show databases;
              name              |      created_time       |   ntables   |   vgroups   | replica | quorum |  days  |           keep           |  cache(MB)  |   blocks    |   minrows   |   maxrows   | wallevel |    fsync    | comp | cachelast | precision | update |   status   |
====================================================================================================================================================================================================================================================================================
 telegraf                       | 2022-04-20 08:47:53.488 |          22 |           1 |       1 |      1 |     10 | 3650                     |          16 |           6 |         100 |        4096 |        1 |        3000 |    2 |         0 | ns        |      2 | ready      |
 log                            | 2022-04-20 07:19:50.260 |           9 |           1 |       1 |      1 |     10 | 3650                     |          16 |           6 |         100 |        4096 |        1 |        3000 |    2 |         0 | ms        |      0 | ready      |
Query OK, 2 row(s) in set (0.002401s)

taos> use telegraf;
Database changed.

taos> show stables;
              name              |      created_time       | columns |  tags  |   tables    |
============================================================================================
 swap                           | 2022-04-20 08:47:53.532 |       7 |      1 |           1 |
 cpu                            | 2022-04-20 08:48:03.488 |      11 |      2 |           5 |
 system                         | 2022-04-20 08:47:53.512 |       8 |      1 |           1 |
 diskio                         | 2022-04-20 08:47:53.550 |      12 |      2 |          15 |
 kernel                         | 2022-04-20 08:47:53.503 |       6 |      1 |           1 |
 mem                            | 2022-04-20 08:47:53.521 |      35 |      1 |           1 |
 processes                      | 2022-04-20 08:47:53.555 |      12 |      1 |           1 |
 disk                           | 2022-04-20 08:47:53.541 |       8 |      5 |           2 |
Query OK, 8 row(s) in set (0.000521s)

taos> select * from telegraf.system limit 10;
              ts               |           load1           |           load5           |          load15           |        n_cpus         |        n_users        |        uptime         | uptime_format |              host
|
=============================================================================================================================================================================================================================================
 2022-04-20 08:47:50.000000000 |               0.000000000 |               0.050000000 |               0.070000000 |                     4 |                     1 |                  5533 |  1:32         | shuduo-1804
|
 2022-04-20 08:48:00.000000000 |               0.000000000 |               0.050000000 |               0.070000000 |                     4 |                     1 |                  5543 |  1:32         | shuduo-1804
|
 2022-04-20 08:48:10.000000000 |               0.000000000 |               0.040000000 |               0.070000000 |                     4 |                     1 |                  5553 |  1:32         | shuduo-1804
|
Query OK, 3 row(s) in set (0.013269s)
```