aboutsummaryrefslogtreecommitdiff
path: root/doc/book/reference-manual/monitoring.md
blob: 97c533d3f1a39f9912004e2fc1037251728c606f (plain) (blame)
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
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
+++
title = "Monitoring"
weight = 60
+++


For information on setting up monitoring, see our [dedicated page](@/documentation/cookbook/monitoring.md) in the Cookbook section.

## List of exported metrics

### Garage system metrics

#### `garage_build_info` (counter)

Exposes the Garage version number running on a node.

```
garage_build_info{version="1.0"} 1
```

#### `garage_replication_factor` (counter)

Exposes the Garage replication factor configured on the node

```
garage_replication_factor 3
```

### Metrics of the API endpoints

#### `api_admin_request_counter` (counter)

Counts the number of requests to a given endpoint of the administration API. Example:

```
api_admin_request_counter{api_endpoint="Metrics"} 127041
```

#### `api_admin_request_duration` (histogram)

Evaluates the duration of API calls to the various administration API endpoint. Example:

```
api_admin_request_duration_bucket{api_endpoint="Metrics",le="0.5"} 127041
api_admin_request_duration_sum{api_endpoint="Metrics"} 605.250344830999
api_admin_request_duration_count{api_endpoint="Metrics"} 127041
```

#### `api_s3_request_counter` (counter)

Counts the number of requests to a given endpoint of the S3 API. Example:

```
api_s3_request_counter{api_endpoint="CreateMultipartUpload"} 1
```

#### `api_s3_error_counter` (counter)

Counts the number of requests to a given endpoint of the S3 API that returned an error. Example:

```
api_s3_error_counter{api_endpoint="GetObject",status_code="404"} 39
```

#### `api_s3_request_duration` (histogram)

Evaluates the duration of API calls to the various S3 API endpoints. Example:

```
api_s3_request_duration_bucket{api_endpoint="CreateMultipartUpload",le="0.5"} 1
api_s3_request_duration_sum{api_endpoint="CreateMultipartUpload"} 0.046340762
api_s3_request_duration_count{api_endpoint="CreateMultipartUpload"} 1
```

#### `api_k2v_request_counter` (counter), `api_k2v_error_counter` (counter), `api_k2v_error_duration` (histogram)

Same as for S3, for the K2V API.


### Metrics of the Web endpoint


#### `web_request_counter` (counter)

Number of requests to the web endpoint

```
web_request_counter{method="GET"} 80
```

#### `web_request_duration` (histogram)

Duration of requests to the web endpoint

```
web_request_duration_bucket{method="GET",le="0.5"} 80
web_request_duration_sum{method="GET"} 1.0528433229999998
web_request_duration_count{method="GET"} 80
```

#### `web_error_counter` (counter)

Number of requests to the web endpoint resulting in errors

```
web_error_counter{method="GET",status_code="404 Not Found"} 64
```


### Metrics of the data block manager

#### `block_bytes_read`, `block_bytes_written` (counter)

Number of bytes read/written to/from disk in the data storage directory.

```
block_bytes_read 120586322022
block_bytes_written 3386618077
```

#### `block_compression_level` (counter)

Exposes the block compression level configured for the Garage node.

```
block_compression_level 3
```

#### `block_read_duration`, `block_write_duration` (histograms)

Evaluates the duration of the reading/writing of individual data blocks in the data storage directory.

```
block_read_duration_bucket{le="0.5"} 169229
block_read_duration_sum 2761.6902550310056
block_read_duration_count 169240
block_write_duration_bucket{le="0.5"} 3559
block_write_duration_sum 195.59170078500006
block_write_duration_count 3571
```

#### `block_delete_counter` (counter)

Counts the number of data blocks that have been deleted from storage.

```
block_delete_counter 122
```

#### `block_resync_counter` (counter), `block_resync_duration` (histogram)

Counts the number of resync operations the node has executed, and evaluates their duration.

```
block_resync_counter 308897
block_resync_duration_bucket{le="0.5"} 308892
block_resync_duration_sum 139.64204196100016
block_resync_duration_count 308897
```

#### `block_resync_queue_length` (gauge)

The number of block hashes currently queued for a resync.
This is normal to be nonzero for long periods of time.

```
block_resync_queue_length 0
```

#### `block_resync_errored_blocks` (gauge)

The number of block hashes that we were unable to resync last time we tried.
**THIS SHOULD BE ZERO, OR FALL BACK TO ZERO RAPIDLY, IN A HEALTHY CLUSTER.**
Persistent nonzero values indicate that some data is likely to be lost.

```
block_resync_errored_blocks 0
```


### Metrics related to RPCs (remote procedure calls) between nodes

#### `rpc_netapp_request_counter` (counter)

Number of RPC requests emitted

```
rpc_request_counter{from="<this node>",rpc_endpoint="garage_block/manager.rs/Rpc",to="<remote node>"} 176
```

#### `rpc_netapp_error_counter` (counter)

Number of communication errors (errors in the Netapp library, generally due to disconnected nodes)

```
rpc_netapp_error_counter{from="<this node>",rpc_endpoint="garage_block/manager.rs/Rpc",to="<remote node>"} 354
```

#### `rpc_timeout_counter` (counter)

Number of RPC timeouts, should be close to zero in a healthy cluster.

```
rpc_timeout_counter{from="<this node>",rpc_endpoint="garage_rpc/membership.rs/SystemRpc",to="<remote node>"} 1
```

#### `rpc_duration` (histogram)

The duration of internal RPC calls between Garage nodes.

```
rpc_duration_bucket{from="<this node>",rpc_endpoint="garage_block/manager.rs/Rpc",to="<remote node>",le="0.5"} 166
rpc_duration_sum{from="<this node>",rpc_endpoint="garage_block/manager.rs/Rpc",to="<remote node>"} 35.172253716
rpc_duration_count{from="<this node>",rpc_endpoint="garage_block/manager.rs/Rpc",to="<remote node>"} 174
```


### Metrics of the metadata table manager

#### `table_gc_todo_queue_length` (gauge)

Table garbage collector TODO queue length

```
table_gc_todo_queue_length{table_name="block_ref"} 0
```

#### `table_get_request_counter` (counter), `table_get_request_duration` (histogram)

Number of get/get_range requests internally made on each table, and their duration.

```
table_get_request_counter{table_name="bucket_alias"} 315
table_get_request_duration_bucket{table_name="bucket_alias",le="0.5"} 315
table_get_request_duration_sum{table_name="bucket_alias"} 0.048509778000000024
table_get_request_duration_count{table_name="bucket_alias"} 315
```


#### `table_put_request_counter` (counter), `table_put_request_duration` (histogram)

Number of insert/insert_many requests internally made on this table, and their duration

```
table_put_request_counter{table_name="block_ref"} 677
table_put_request_duration_bucket{table_name="block_ref",le="0.5"} 677
table_put_request_duration_sum{table_name="block_ref"} 61.617528636
table_put_request_duration_count{table_name="block_ref"} 677
```

#### `table_internal_delete_counter` (counter)

Number of value deletions in the tree (due to GC or repartitioning)

```
table_internal_delete_counter{table_name="block_ref"} 2296
```

#### `table_internal_update_counter` (counter)

Number of value updates where the value actually changes (includes creation of new key and update of existing key)

```
table_internal_update_counter{table_name="block_ref"} 5996
```

#### `table_merkle_updater_todo_queue_length` (gauge)

Merkle tree updater TODO queue length (should fall to zero rapidly)

```
table_merkle_updater_todo_queue_length{table_name="block_ref"} 0
```

#### `table_sync_items_received`, `table_sync_items_sent` (counters)

Number of data items sent to/recieved from other nodes during resync procedures

```
table_sync_items_received{from="<remote node>",table_name="bucket_v2"} 3
table_sync_items_sent{table_name="block_ref",to="<remote node>"} 2
```