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# RiakKV


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


Plugin: python.d.plugin
Module: riakkv

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

## Overview

This collector monitors RiakKV metrics about throughput, latency, resources and more.'


This collector reads the database stats from the `/stats` endpoint.

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

If the /stats endpoint is accessible, RiakKV instances on the local host running on port 8098 will be autodetected.

#### 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 RiakKV instance

These metrics refer to the entire monitored application.

This scope has no labels.

Metrics:

| Metric | Dimensions | Unit |
|:------|:----------|:----|
| riak.kv.throughput | gets, puts | operations/s |
| riak.dt.vnode_updates | counters, sets, maps | operations/s |
| riak.search | queries | queries/s |
| riak.search.documents | indexed | documents/s |
| riak.consistent.operations | gets, puts | operations/s |
| riak.kv.latency.get | mean, median, 95, 99, 100 | ms |
| riak.kv.latency.put | mean, median, 95, 99, 100 | ms |
| riak.dt.latency.counter_merge | mean, median, 95, 99, 100 | ms |
| riak.dt.latency.set_merge | mean, median, 95, 99, 100 | ms |
| riak.dt.latency.map_merge | mean, median, 95, 99, 100 | ms |
| riak.search.latency.query | median, min, 95, 99, 999, max | ms |
| riak.search.latency.index | median, min, 95, 99, 999, max | ms |
| riak.consistent.latency.get | mean, median, 95, 99, 100 | ms |
| riak.consistent.latency.put | mean, median, 95, 99, 100 | ms |
| riak.vm | processes | total |
| riak.vm.memory.processes | allocated, used | MB |
| riak.kv.siblings_encountered.get | mean, median, 95, 99, 100 | siblings |
| riak.kv.objsize.get | mean, median, 95, 99, 100 | KB |
| riak.search.vnodeq_size | mean, median, 95, 99, 100 | messages |
| riak.search.index | errors | errors |
| riak.core.protobuf_connections | active | connections |
| riak.core.repairs | read | repairs |
| riak.core.fsm_active | get, put, secondary index, list keys | fsms |
| riak.core.fsm_rejected | get, put | fsms |
| riak.search.index | bad_entry, extract_fail | writes |



## Alerts


The following alerts are available:

| Alert name  | On metric | Description |
|:------------|:----------|:------------|
| [ riakkv_1h_kv_get_mean_latency ](https://github.com/netdata/netdata/blob/master/src/health/health.d/riakkv.conf) | riak.kv.latency.get | average time between reception of client GET request and subsequent response to client over the last hour |
| [ riakkv_kv_get_slow ](https://github.com/netdata/netdata/blob/master/src/health/health.d/riakkv.conf) | riak.kv.latency.get | average time between reception of client GET request and subsequent response to the client over the last 3 minutes, compared to the average over the last hour |
| [ riakkv_1h_kv_put_mean_latency ](https://github.com/netdata/netdata/blob/master/src/health/health.d/riakkv.conf) | riak.kv.latency.put | average time between reception of client PUT request and subsequent response to the client over the last hour |
| [ riakkv_kv_put_slow ](https://github.com/netdata/netdata/blob/master/src/health/health.d/riakkv.conf) | riak.kv.latency.put | average time between reception of client PUT request and subsequent response to the client over the last 3 minutes, compared to the average over the last hour |
| [ riakkv_vm_high_process_count ](https://github.com/netdata/netdata/blob/master/src/health/health.d/riakkv.conf) | riak.vm | number of processes running in the Erlang VM |
| [ riakkv_list_keys_active ](https://github.com/netdata/netdata/blob/master/src/health/health.d/riakkv.conf) | riak.core.fsm_active | number of currently running list keys finite state machines |


## Setup

### Prerequisites

#### Configure RiakKV to enable /stats endpoint

You can follow the RiakKV configuration reference documentation for how to enable this.

Source : https://docs.riak.com/riak/kv/2.2.3/configuring/reference/#client-interfaces



### Configuration

#### File

The configuration file name for this integration is `python.d/riakkv.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 python.d/riakkv.conf
```
#### Options

There are 2 sections:

* Global variables
* One or more JOBS that can define multiple different instances to monitor.

The following options can be defined globally: priority, penalty, autodetection_retry, update_every, but can also be defined per JOB to override the global values.

Additionally, the following collapsed table contains all the options that can be configured inside a JOB definition.

Every configuration JOB starts with a `job_name` value which will appear in the dashboard, unless a `name` parameter is specified.


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

| Name | Description | Default | Required |
|:----|:-----------|:-------|:--------:|
| update_every | Sets the default data collection frequency. | 5 | no |
| priority | Controls the order of charts at the netdata dashboard. | 60000 | no |
| autodetection_retry | Sets the job re-check interval in seconds. | 0 | no |
| penalty | Indicates whether to apply penalty to update_every in case of failures. | yes | no |
| url | The url of the server | no | yes |

</details>

#### Examples

##### Basic (default)

A basic example configuration per job

```yaml
local:
url: 'http://localhost:8098/stats'

```
##### Multi-instance

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

Collecting metrics from local and remote instances.


<details open><summary>Config</summary>

```yaml
local:
  url: 'http://localhost:8098/stats'

remote:
  url: 'http://192.0.2.1:8098/stats'

```
</details>



## Troubleshooting

### Debug Mode

To troubleshoot issues with the `riakkv` collector, run the `python.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 `python.d.plugin` to debug the collector:

  ```bash
  ./python.d.plugin riakkv debug trace
  ```


