mirror of
https://gitee.com/iresty/apisix.git
synced 2024-12-15 17:31:45 +08:00
166 lines
5.4 KiB
Markdown
166 lines
5.4 KiB
Markdown
<!--
|
|
#
|
|
# Licensed to the Apache Software Foundation (ASF) under one or more
|
|
# contributor license agreements. See the NOTICE file distributed with
|
|
# this work for additional information regarding copyright ownership.
|
|
# The ASF licenses this file to You under the Apache License, Version 2.0
|
|
# (the "License"); you may not use this file except in compliance with
|
|
# the License. You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
#
|
|
-->
|
|
|
|
- [中文](../zh-cn/plugins/prometheus.md)
|
|
|
|
# prometheus
|
|
|
|
This plugin exposes metrics in Prometheus Exposition format.
|
|
|
|
## Attributes
|
|
|
|
none.
|
|
|
|
## API
|
|
|
|
This plugin will add `/apisix/prometheus/metrics` to expose the metrics.
|
|
You may need to use [interceptors](plugin-interceptors.md) to protect it.
|
|
|
|
## How to enable it
|
|
|
|
`prometheus` plugin can be enable with empty table, because it doesn't have
|
|
any options yet.
|
|
|
|
For example:
|
|
|
|
```shell
|
|
curl http://127.0.0.1:9080/apisix/admin/routes/1 -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -d '
|
|
{
|
|
"uri": "/hello",
|
|
"plugins": {
|
|
"prometheus":{}
|
|
},
|
|
"upstream": {
|
|
"type": "roundrobin",
|
|
"nodes": {
|
|
"127.0.0.1:80": 1
|
|
}
|
|
}
|
|
}'
|
|
```
|
|
|
|
You can open dashboard with a browser: `http://127.0.0.1:9080/apisix/dashboard/`, to complete the above operation through the web interface, first add a route:
|
|
|
|
|
|
|
|
Then add prometheus plugin:
|
|
|
|
|
|
|
|
## How to fetch the metric data
|
|
|
|
We fetch the metric data from the specified url `/apisix/prometheus/metrics`.
|
|
```
|
|
curl -i http://127.0.0.1:9080/apisix/prometheus/metrics
|
|
```
|
|
|
|
Puts this URL address into prometheus, and it will automatically fetch
|
|
these metric data.
|
|
|
|
For example like this:
|
|
|
|
```yaml
|
|
scrape_configs:
|
|
- job_name: 'apisix'
|
|
metrics_path: '/apisix/prometheus/metrics'
|
|
static_configs:
|
|
- targets: ['127.0.0.1:9080']
|
|
```
|
|
|
|
And we can check the status at prometheus console:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
### Grafana dashboard
|
|
|
|
Metrics exported by the plugin can be graphed in Grafana using a drop in dashboard.
|
|
|
|
Downloads [Grafana dashboard meta](../json/apisix-grafana-dashboard.json) and imports it to Grafana。
|
|
|
|
Or you can goto [Grafana official](https://grafana.com/grafana/dashboards/11719) for `Grafana` meta data.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
### Available metrics
|
|
|
|
* `Status codes`: HTTP status codes returned by upstream services. These are available per service and across all services.
|
|
* `Bandwidth`: Total Bandwidth (egress/ingress) flowing through apisix. This metric is available per service and as a sum across all services.
|
|
* `etcd reachability`: A gauge type with a value of 0 or 1, representing if etcd can be reached by a apisix or not.
|
|
* `Connections`: Various Nginx connection metrics like active, reading, writing, and number of accepted connections.
|
|
|
|
Here is the original metric data of apisix:
|
|
|
|
```
|
|
$ curl http://127.0.0.2:9080/apisix/prometheus/metrics
|
|
# HELP apisix_bandwidth Total bandwidth in bytes consumed per service in Apisix
|
|
# TYPE apisix_bandwidth counter
|
|
apisix_bandwidth{type="egress",service="127.0.0.2"} 183
|
|
apisix_bandwidth{type="egress",service="bar.com"} 183
|
|
apisix_bandwidth{type="egress",service="foo.com"} 2379
|
|
apisix_bandwidth{type="ingress",service="127.0.0.2"} 83
|
|
apisix_bandwidth{type="ingress",service="bar.com"} 76
|
|
apisix_bandwidth{type="ingress",service="foo.com"} 988
|
|
# HELP apisix_etcd_reachable Config server etcd reachable from Apisix, 0 is unreachable
|
|
# TYPE apisix_etcd_reachable gauge
|
|
apisix_etcd_reachable 1
|
|
# HELP apisix_http_status HTTP status codes per service in Apisix
|
|
# TYPE apisix_http_status counter
|
|
apisix_http_status{code="200",service="127.0.0.2"} 1
|
|
apisix_http_status{code="200",service="bar.com"} 1
|
|
apisix_http_status{code="200",service="foo.com"} 13
|
|
# HELP apisix_nginx_http_current_connections Number of HTTP connections
|
|
# TYPE apisix_nginx_http_current_connections gauge
|
|
apisix_nginx_http_current_connections{state="accepted"} 11994
|
|
apisix_nginx_http_current_connections{state="active"} 2
|
|
apisix_nginx_http_current_connections{state="handled"} 11994
|
|
apisix_nginx_http_current_connections{state="reading"} 0
|
|
apisix_nginx_http_current_connections{state="total"} 1191780
|
|
apisix_nginx_http_current_connections{state="waiting"} 1
|
|
apisix_nginx_http_current_connections{state="writing"} 1
|
|
# HELP apisix_nginx_metric_errors_total Number of nginx-lua-prometheus errors
|
|
# TYPE apisix_nginx_metric_errors_total counter
|
|
apisix_nginx_metric_errors_total 0
|
|
```
|
|
|
|
## Disable Plugin
|
|
|
|
Remove the corresponding json configuration in the plugin configuration to disable `prometheus`.
|
|
APISIX plugins are hot-reloaded, therefore no need to restart APISIX.
|
|
|
|
```shell
|
|
curl http://127.0.0.1:9080/apisix/admin/routes/1 -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -d '
|
|
{
|
|
"uri": "/hello",
|
|
"plugins": {},
|
|
"upstream": {
|
|
"type": "roundrobin",
|
|
"nodes": {
|
|
"127.0.0.1:80": 1
|
|
}
|
|
}
|
|
}'
|
|
```
|