PgBouncer

Plugin: go.d.plugin Module: pgbouncer

Overview

This collector monitors PgBouncer servers.

Executed queries:

• SHOW VERSION;
• SHOW CONFIG;
• SHOW DATABASES;
• SHOW STATS;
• SHOW POOLS;

Information about the queries can be found in the PgBouncer Documentation.

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

This integration doesn’t support auto-detection.

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.

Setup

You can configure the pgbouncer collector in two ways:

:::important

UI configuration requires paid Netdata Cloud plan.

:::

Prerequisites

Create netdata user

Create a user with stats_users permissions to query your PgBouncer instance.

To create the netdata user:

• Add netdata user to the pgbouncer.ini file:

  stats_users = netdata
  

• Add a password for the netdata user to the userlist.txt file:

  "netdata" "<PASSWORD>"
  

• To verify the credentials, run the following command

  psql -h localhost -U netdata -p 6432 pgbouncer -c "SHOW VERSION;" >/dev/null 2>&1 && echo OK || echo FAIL
  

  When it prompts for a password, enter the password you added to userlist.txt.

Configuration

Options

The following options can be defined globally: update_every, autodetection_retry.

via UI

Configure the pgbouncer collector from the Netdata web interface:

1. Go to Nodes.
2. Select the node where you want the pgbouncer data-collection job to run and click the :gear: (Configure this node). That node will run the data collection.
3. The Collectors → Jobs view opens by default.
4. In the Search box, type pgbouncer (or scroll the list) to locate the pgbouncer collector.
5. Click the + next to the pgbouncer collector to add a new job.
6. Fill in the job fields, then click Test to verify the configuration and Submit to save.
   • Test runs the job with the provided settings and shows whether data can be collected.
   • If it fails, an error message appears with details (for example, connection refused, timeout, or command execution errors), so you can adjust and retest.

via File

The configuration file name for this integration is go.d/pgbouncer.conf.

The file format is YAML. Generally, the structure is:

update_every: 1
autodetection_retry: 0
jobs:
  - name: some_name1
  - name: some_name2

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 go.d/pgbouncer.conf

Examples

TCP socket

An example configuration.

jobs:
  - name: local
    dsn: 'postgres://postgres:[email protected]:6432/pgbouncer'

Unix socket

An example configuration.

jobs:
  - name: local
    dsn: 'host=/tmp dbname=pgbouncer user=postgres port=6432'

Multi-instance

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

Local and remote instances.

jobs:
  - name: local
    dsn: 'postgres://postgres:[email protected]:6432/pgbouncer'

  - name: remote
    dsn: 'postgres://postgres:[email protected]:6432/pgbouncer'

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 PgBouncer instance

These metrics refer to the entire monitored application.

This scope has no labels.

Metrics:

Per database

These metrics refer to the database.

Labels:

Metrics:

Alerts

There are no alerts configured by default for this integration.

Troubleshooting

Debug Mode

Important: Debug mode is not supported for data collection jobs created via the UI using the Dyncfg feature.

To troubleshoot issues with the pgbouncer collector, run the go.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 go.d.plugin to debug the collector:

  ./go.d.plugin -d -m pgbouncer
  

  To debug a specific job:

  ./go.d.plugin -d -m pgbouncer -j jobName
  

Getting Logs

If you’re encountering problems with the pgbouncer collector, follow these steps to retrieve logs and identify potential issues:

• Run the command specific to your system (systemd, non-systemd, or Docker container).
• Examine the output for any warnings or error messages that might indicate issues. These messages should provide clues about the root cause of the problem.

System with systemd

Use the following command to view logs generated since the last Netdata service restart:

journalctl _SYSTEMD_INVOCATION_ID="$(systemctl show --value --property=InvocationID netdata)" --namespace=netdata --grep pgbouncer

System without systemd

Locate the collector log file, typically at /var/log/netdata/collector.log, and use grep to filter for collector’s name:

grep pgbouncer /var/log/netdata/collector.log

Note: This method shows logs from all restarts. Focus on the latest entries for troubleshooting current issues.

Docker Container

If your Netdata runs in a Docker container named “netdata” (replace if different), use this command:

docker logs netdata 2>&1 | grep pgbouncer