Gearman

Plugin: python.d.plugin Module: gearman

Overview

Monitor Gearman metrics for proficient system task distribution. Track job counts, worker statuses, and queue lengths for effective distributed task management.

This collector connects to a Gearman instance via either TCP or unix socket.

This collector is supported on all platforms.

This collector supports collecting metrics from multiple instances of this integration, including remote instances.

Default Behavior

Auto-Detection

When no configuration file is found, the collector tries to connect to TCP/IP socket: localhost:4730.

Limits

The default configuration for this integration does not impose any limits on data collection.

Performance Impact

The default configuration for this integration is not expected to impose a significant performance impact on the system.

Metrics

Metrics grouped by scope.

The scope defines the instance that the metric belongs to. An instance is uniquely identified by a set of labels.

Per Gearman instance

These metrics refer to the entire monitored application.

This scope has no labels.

Metrics:

Metric	Dimensions	Unit
gearman.total_jobs	Pending, Running	Jobs

Per gearman job

Metrics related to Gearman jobs. Each job produces its own set of the following metrics.

This scope has no labels.

Metrics:

Metric	Dimensions	Unit
gearman.single_job	Pending, Idle, Runnning	Jobs

Alerts

The following alerts are available:

Alert name	On metric	Description
gearman_workers_queued	gearman.single_job	average number of queued jobs over the last 10 minutes

Setup

Prerequisites

Socket permissions

The gearman UNIX socket should have read permission for user netdata.

Configuration

File

The configuration file name for this integration is python.d/gearman.conf.

You can edit the configuration file using the edit-config script from the Netdata config directory.

cd /etc/netdata 2>/dev/null || cd /opt/netdata/etc/netdata
sudo ./edit-config python.d/gearman.conf

Options

There are 2 sections:

• Global variables
• One or more JOBS that can define multiple different instances to monitor.

The following options can be defined globally: priority, penalty, autodetection_retry, update_every, but can also be defined per JOB to override the global values.

Additionally, the following collapsed table contains all the options that can be configured inside a JOB definition.

Every configuration JOB starts with a job_name value which will appear in the dashboard, unless a name parameter is specified.

Config options

Name	Description	Default	Required
update_every	Sets the default data collection frequency.	5	no
priority	Controls the order of charts at the netdata dashboard.	60000	no
autodetection_retry	Sets the job re-check interval in seconds.	0	no
penalty	Indicates whether to apply penalty to update_every in case of failures.	yes	no
name	Job name. This value will overwrite the job_name value. JOBS with the same name are mutually exclusive. Only one of them will be allowed running at any time. This allows autodetection to try several alternatives and pick the one that works.		no
host	URL or IP where gearman is running.	localhost	no
port	Port of URL or IP where gearman is running.	4730	no
tls	Use tls to connect to gearman.	false	no
cert	Provide a certificate file if needed to connect to a TLS gearman instance.		no
key	Provide a key file if needed to connect to a TLS gearman instance.		no

Examples

Local gearman service

A basic host and port gearman configuration for localhost.

localhost:
  name: 'local'
  host: 'localhost'
  port: 4730

Multi-instance

Note: When you define multiple jobs, their names must be unique.

Collecting metrics from local and remote instances.

Config

localhost:
  name: 'local'
  host: 'localhost'
  port: 4730

remote:
  name: 'remote'
  host: '192.0.2.1'
  port: 4730

Troubleshooting

Debug Mode

To troubleshoot issues with the gearman collector, run the python.d.plugin with the debug option enabled. The output should give you clues as to why the collector isn't working.

• Navigate to the plugins.d directory, usually at /usr/libexec/netdata/plugins.d/. If that's not the case on your system, open netdata.conf and look for the plugins setting under [directories].

  cd /usr/libexec/netdata/plugins.d/

• Switch to the netdata user.

  sudo -u netdata -s

• Run the python.d.plugin to debug the collector:

  ./python.d.plugin gearman debug trace