netdata/netdata

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# Tengine


<img src="https://netdata.cloud/img/tengine.jpeg" width="150"/>


Plugin: go.d.plugin
Module: tengine

<img src="https://img.shields.io/badge/maintained%20by-Netdata-%2300ab44" />

## Overview

This collector monitors Tengine servers.




This collector is supported on all platforms.

This collector supports collecting metrics from multiple instances of this integration, including remote instances.


### Default Behavior

#### Auto-Detection

This integration doesn't support auto-detection.

#### Limits

The default configuration for this integration does not impose any limits on data collection.

#### Performance Impact

The default configuration for this integration is not expected to impose a significant performance impact on the system.


## Metrics

Metrics grouped by *scope*.

The scope defines the instance that the metric belongs to. An instance is uniquely identified by a set of labels.



### Per Tengine instance

These metrics refer to the entire monitored application.

This scope has no labels.

Metrics:

| Metric | Dimensions | Unit |
|:------|:----------|:----|
| tengine.bandwidth_total | in, out | B/s |
| tengine.connections_total | accepted | connections/s |
| tengine.requests_total | processed | requests/s |
| tengine.requests_per_response_code_family_total | 2xx, 3xx, 4xx, 5xx, other | requests/s |
| tengine.requests_per_response_code_detailed_total | 200, 206, 302, 304, 403, 404, 419, 499, 500, 502, 503, 504, 508, other | requests/s |
| tengine.requests_upstream_total | requests | requests/s |
| tengine.tries_upstream_total | calls | calls/s |
| tengine.requests_upstream_per_response_code_family_total | 4xx, 5xx | requests/s |



## Alerts

There are no alerts configured by default for this integration.


## Setup

### Prerequisites

#### Enable ngx_http_reqstat_module module.

To enable the module, see the [official documentation](ngx_http_reqstat_module](https://tengine.taobao.org/document/http_reqstat.html).
The default line format is the only supported format.



### Configuration

#### File

The configuration file name for this integration is `go.d/tengine.conf`.


You can edit the configuration file using the `edit-config` script from the
Netdata [config directory](/docs/netdata-agent/configuration/README.md#the-netdata-config-directory).

```bash
cd /etc/netdata 2>/dev/null || cd /opt/netdata/etc/netdata
sudo ./edit-config go.d/tengine.conf
```
#### Options

The following options can be defined globally: update_every, autodetection_retry.


<details><summary>Config options</summary>

| Name | Description | Default | Required |
|:----|:-----------|:-------|:--------:|
| update_every | Data collection frequency. | 1 | no |
| autodetection_retry | Recheck interval in seconds. Zero means no recheck will be scheduled. | 0 | no |
| url | Server URL. | http://127.0.0.1/us | yes |
| timeout | HTTP request timeout. | 2 | no |
| username | Username for basic HTTP authentication. |  | no |
| password | Password for basic HTTP authentication. |  | no |
| proxy_url | Proxy URL. |  | no |
| proxy_username | Username for proxy basic HTTP authentication. |  | no |
| proxy_password | Password for proxy basic HTTP authentication. |  | no |
| method | HTTP request method. | GET | no |
| body | HTTP request body. |  | no |
| headers | HTTP request headers. |  | no |
| not_follow_redirects | Redirect handling policy. Controls whether the client follows redirects. | no | no |
| tls_skip_verify | Server certificate chain and hostname validation policy. Controls whether the client performs this check. | no | no |
| tls_ca | Certification authority that the client uses when verifying the server's certificates. |  | no |
| tls_cert | Client TLS certificate. |  | no |
| tls_key | Client TLS key. |  | no |

</details>

#### Examples

##### Basic

An example configuration.

<details><summary>Config</summary>

```yaml
jobs:
  - name: local
    url: http://127.0.0.1/us

```
</details>

##### HTTP authentication

Local server with basic HTTP authentication.

<details><summary>Config</summary>

```yaml
jobs:
  - name: local
    url: http://127.0.0.1/us
    username: foo
    password: bar

```
</details>

##### HTTPS with self-signed certificate

Tengine with enabled HTTPS and self-signed certificate.

<details><summary>Config</summary>

```yaml
jobs:
  - name: local
    url: https://127.0.0.1/us
    tls_skip_verify: yes

```
</details>

##### Multi-instance

> **Note**: When you define multiple jobs, their names must be unique.

Local and remote instances.


<details><summary>Config</summary>

```yaml
jobs:
 - name: local
   url: http://127.0.0.1/us

 - name: remote
   url: http://203.0.113.10/us

```
</details>



## Troubleshooting

### Debug Mode

To troubleshoot issues with the `tengine` collector, run the `go.d.plugin` with the debug option enabled. The output
should give you clues as to why the collector isn't working.

- Navigate to the `plugins.d` directory, usually at `/usr/libexec/netdata/plugins.d/`. If that's not the case on
  your system, open `netdata.conf` and look for the `plugins` setting under `[directories]`.

  ```bash
  cd /usr/libexec/netdata/plugins.d/
  ```

- Switch to the `netdata` user.

  ```bash
  sudo -u netdata -s
  ```

- Run the `go.d.plugin` to debug the collector:

  ```bash
  ./go.d.plugin -d -m tengine
  ```