summaryrefslogtreecommitdiffstats
path: root/collectors/python.d.plugin/riakkv/README.md
blob: d0ea9a137985bfd591131053fbe255ab31a6baf5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
<!--
title: "Riak KV monitoring with Netdata"
custom_edit_url: https://github.com/netdata/netdata/edit/master/collectors/python.d.plugin/riakkv/README.md
sidebar_label: "Riak KV"
-->

# Riak KV monitoring with Netdata

Collects database stats from `/stats` endpoint.

## Requirements

-   An accessible `/stats` endpoint. See [the Riak KV configuration reference documentation](https://docs.riak.com/riak/kv/2.2.3/configuring/reference/#client-interfaces)
    for how to enable this.

The following charts are included, which are mostly derived from the metrics
listed
[here](https://docs.riak.com/riak/kv/latest/using/reference/statistics-monitoring/index.html#riak-metrics-to-graph).

1.  **Throughput** in operations/s

-   **KV operations**
    -   gets
    -   puts

-   **Data type updates**
    -   counters
    -   sets
    -   maps

-   **Search queries**
    -   queries

-   **Search documents**
    -   indexed

-   **Strong consistency operations**
    -   gets
    -   puts

2.  **Latency** in milliseconds

-   **KV latency** of the past minute
    -   get (mean, median, 95th / 99th / 100th percentile)
    -   put (mean, median, 95th / 99th / 100th percentile)

-   **Data type latency** of the past minute
    -   counter_merge (mean, median, 95th / 99th / 100th percentile)
    -   set_merge (mean, median, 95th / 99th / 100th percentile)
    -   map_merge (mean, median, 95th / 99th / 100th percentile)

-   **Search latency** of the past minute
    -   query (median, min, max, 95th / 99th percentile)
    -   index (median, min, max, 95th / 99th percentile)

-   **Strong consistency latency** of the past minute
    -   get (mean, median, 95th / 99th / 100th percentile)
    -   put (mean, median, 95th / 99th / 100th percentile)

3.  **Erlang VM metrics**

-   **System counters**
    -   processes

-   **Memory allocation** in MB
    -   processes.allocated
    -   processes.used

4.  **General load / health metrics**

-   **Siblings encountered in KV operations** during the past minute
    -   get (mean, median, 95th / 99th / 100th percentile)

-   **Object size in KV operations** during the past minute in KB
    -   get (mean, median, 95th / 99th / 100th percentile)

-   **Message queue length** in unprocessed messages
    -   vnodeq_size (mean, median, 95th / 99th / 100th percentile)

-   **Index operations** encountered by Search
    -   errors

-   **Protocol buffer connections**
    -   active

-   **Repair operations coordinated by this node**
    -   read

-   **Active finite state machines by kind**
    -   get
    -   put
    -   secondary_index
    -   list_keys

-   **Rejected finite state machines**
    -   get
    -   put

-   **Number of writes to Search failed due to bad data format by reason**
    -   bad_entry
    -   extract_fail

## Configuration

Edit the `python.d/riakkv.conf` configuration file using `edit-config` from the Netdata [config
directory](/docs/configure/nodes.md), which is typically at `/etc/netdata`.

```bash
cd /etc/netdata   # Replace this path with your Netdata config directory, if different
sudo ./edit-config python.d/riakkv.conf
```

The module needs to be passed the full URL to Riak's stats endpoint.
For example:

```yaml
myriak:
  url: http://myriak.example.com:8098/stats
```

With no explicit configuration given, the module will attempt to connect to
`http://localhost:8098/stats`.

The default update frequency for the plugin is set to 2 seconds as Riak
internally updates the metrics every second. If we were to update the metrics
every second, the resulting graph would contain odd jitter.

[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fcollectors%2Fpython.d.plugin%2Friakkv%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()