Enterprise modules
Send metrics
Available since
- HAProxy Enterprise 1.8r1
The Send Metrics module streams HAProxy Enterprise metrics to an external program. You can configure which fields to include in the data.
Install the Send Metrics module Jump to heading
-
Install the module using your package manager:
nixsudo apt-get install hapee-2.9r1-lb-send-metricsnixsudo apt-get install hapee-2.9r1-lb-send-metricsnixsudo yum install hapee-2.9r1-lb-send-metricsnixsudo yum install hapee-2.9r1-lb-send-metricsnixsudo zypper install hapee-2.9r1-lb-send-metricsnixsudo zypper install hapee-2.9r1-lb-send-metricsnixsudo pkg install hapee-2.9r1-lb-send-metricsnixsudo pkg install hapee-2.9r1-lb-send-metrics -
Update the
global
section of your configuration to send the data:haproxyglobalmodule-path /opt/hapee-2.9/modulesmodule-load hapee-lb-send-metrics.sosend-metrics-url POST http://192.168.0.1:8000/metrics/ xdelay 1m 5s 1s 1s timeout 100ms retries 3 logsend-metrics-content-type application/jsonsend-metrics-data '{ "Hostname": "%H", "Date": "%T", "connections": "%ac" }'send-metrics-header 'X-APIKey: abcd1234'haproxyglobalmodule-path /opt/hapee-2.9/modulesmodule-load hapee-lb-send-metrics.sosend-metrics-url POST http://192.168.0.1:8000/metrics/ xdelay 1m 5s 1s 1s timeout 100ms retries 3 logsend-metrics-content-type application/jsonsend-metrics-data '{ "Hostname": "%H", "Date": "%T", "connections": "%ac" }'send-metrics-header 'X-APIKey: abcd1234'In this example, we:
- sends data at a 1 minute interval to the URL
http://192.168.0.1:8000/metrics/
using an HTTPPOST
request. - format the data as JSON.
- sends the server’s hostname, the date, and the current number of active connections.
- attaches an HTTP header named
X-APIKey
to the request.
See the section below for an explanation of each directive and its parameters.
- sends data at a 1 minute interval to the URL
Global directives Jump to heading
The Send Metrics module enables the following directives in the global
section.
send-metrics-url Jump to heading
The send-metrics-url
directive is required. It tells the load balancer to send metrics data over HTTP to a specified URL.
Syntax:
send-metrics-url POST <url> [delay <u> | xdelay <u s b r>] [timeout <t>] [retries <n>] [log] [dontlog-normal]
where:
Argument | Description |
---|---|
post <url> |
Required. Specifies the URL to send metrics data to. |
delay <u> |
<u> Specifies the period between each attempt to send new data metrics. The delay keyword is a simplified version of the xdelay keyword. |
xdelay <u s b r> |
<u> specifies the period between each attempt to send new data metrics. If the module cannot send the metrics data after three attempts, it cancels the update until the next time interval defined by <u> . It defaults to 60m. <s> specifies the initial (first) delay to send the data. It defaults to 5s. <b> is not used in this module and its value is not important. It defaults to 10s. If the data fails to send, <r> determines the delay for the next attempt. It defaults to 5s. |
timeout <t> |
Specifies the HTTP connection timeout for attempts to send new data metrics. The value is in milliseconds by default, but you can set it to any other unit if you add it as a suffix to the number. Default: 5s |
retries <n> |
Specifies number of retries to send new data metrics. If unspecified, HAProxy Enterprise uses the global retries value. Default: 3s |
log |
Specifies whether to log operation errors. |
dontlog-normal |
Deactivates logging for successful updates. |
param* |
A list of other server line arguments. This is useful for configuring special TLS features. |
send-metrics-data Jump to heading
The send-metrics-data
directive is required. It sets the data to send to the selected HTTP server. You can set individual log variables within the data, prefixed with %
.
send-metrics-content-type Jump to heading
- The
send-metrics-content-type
directive allows the module to set theContent-Type
header when sending data, including and limited to the content types listed below. If unspecified, the module uses theapplication/octet-stream
Content-Type.
Supported content types are:
application/json
application/octet-stream
application/x-www-form-urlencoded
text/plain
send-metrics-header Jump to heading
The send-metrics-header
directive allows the module to set additional HTTP headers within the HTTP POST
request.
send-metrics-debug Jump to heading
The send-metrics-debug
directive sets the debug level. Use this only when the module runs in debug mode; in normal use, it has no significance. Default: level 7.
Runtime API Jump to heading
The following Runtime API commands are available:
lb-send-metrics show-data Jump to heading
The lb-send-metrics show-data
command serves to check the operation of the module by printing the content the module sent to the selected HTTP server.
lb-send-metrics status Jump to heading
The lb-send-metrics status
command displays the module’s status.
lb-send-metrics update Jump to heading
The lb-send-metrics update [delay]
command runs the update at a time specified with the delay
setting. If unspecified (or the delay is 0), the update executes immediately. The delay cannot exceed the time until the next regular update.
lb-send-metrics debug Jump to heading
The lb-send-metrics debug [level]
command sets the debug level. You can use this only when the module runs in debug mode; in normal use it has no significance. Default: level 7.
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