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
|
# riakkv
Monitors one or more Riak KV servers.
**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
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.
|
