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# CouchDB


<img src="https://netdata.cloud/img/couchdb.svg" width="150"/>


Plugin: go.d.plugin
Module: couchdb

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

## Overview

This collector monitors CouchDB 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 CouchDB instance

These metrics refer to the entire monitored application.

This scope has no labels.

Metrics:

| Metric | Dimensions | Unit |
|:------|:----------|:----|
| couchdb.activity | db_reads, db_writes, view_reads | requests/s |
| couchdb.request_methods | copy, delete, get, head, options, post, put | requests/s |
| couchdb.response_codes | 200, 201, 202, 204, 206, 301, 302, 304, 400, 401, 403, 404, 406, 409, 412, 413, 414, 415, 416, 417, 500, 501, 503 | responses/s |
| couchdb.response_code_classes | 2xx, 3xx, 4xx, 5xx | responses/s |
| couchdb.active_tasks | indexer, db_compaction, replication, view_compaction | tasks |
| couchdb.replicator_jobs | running, pending, crashed, internal_replication_jobs | jobs |
| couchdb.open_files | files | files |
| couchdb.erlang_vm_memory | atom, binaries, code, ets, procs, other | B |
| couchdb.proccounts | os_procs, erl_procs | processes |
| couchdb.peakmsgqueue | peak_size | messages |
| couchdb.reductions | reductions | reductions |
| couchdb.db_sizes_file | a dimension per database | KiB |
| couchdb.db_sizes_external | a dimension per database | KiB |
| couchdb.db_sizes_active | a dimension per database | KiB |
| couchdb.db_doc_count | a dimension per database | docs |
| couchdb.db_doc_del_count | a dimension per database | docs |



## Alerts

There are no alerts configured by default for this integration.


## Setup

### Prerequisites

No action required.

### Configuration

#### File

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


You can edit the configuration file using the `edit-config` script from the
Netdata [config directory](https://github.com/netdata/netdata/blob/master/docs/netdata-agent/configuration.md#the-netdata-config-directory).

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

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


<details><summary>Config</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://127.0.0.1:5984 | yes |
| node | CouchDB node name. Same as -name vm.args argument. | _local | no |
| databases | List of database names for which db-specific stats should be displayed, space separated. |  | 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 |
| timeout | HTTP request timeout. | 2 | 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://127.0.0.1:5984

```
</details>

##### Basic HTTP auth

Local server with basic HTTP authentication, node name and multiple databases defined. Make sure to match the node name with the `NODENAME` value in your CouchDB's `etc/vm.args` file.  Typically, this is of the form `couchdb@fully.qualified.domain.name` in a cluster, or `couchdb@127.0.0.1` for a single-node server.


<details><summary>Config</summary>

```yaml
jobs:
  - name: local
    url: http://127.0.0.1:5984
    node: couchdb@127.0.0.1
    databases: my-db other-db
    username: foo
    password: bar

```
</details>

##### Multi-instance

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

Collecting metrics from local and remote instances.


<details><summary>Config</summary>

```yaml
jobs:
  - name: local
    url: http://127.0.0.1:5984

  - name: remote
    url: http://203.0.113.0:5984

```
</details>



## Troubleshooting

### Debug Mode

To troubleshoot issues with the `couchdb` 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 couchdb
  ```


