PG Exporter — PostgreSQL Metrics Exporter for Prometheus on PG Exporter

PG Exporter v1.4.1

Wed, 29 Jul 2026 21:31:19 +0800

v1.4.1 is a maintenance release focused on metric accuracy and RPM upgrade compatibility.

Highlights

Fix pg_subrel_count overcounting when parallel logical replication apply workers are active: deduplicate pg_stat_subscription by subscription ID and name before aggregating subscription relation states
If a query result omits a configured LABEL column, that collector’s scrape now fails atomically instead of emitting an empty label or retaining stale results; other non-fatal collectors continue normally
Rename the official RPM package and artifact prefix from pg_exporter to pg-exporter; the new package provides and obsoletes the legacy name, allowing direct upgrades
Refresh version and standalone package metadata, add missing-label regression coverage, and validate RPM configuration, artifact names, and compatibility metadata in CI

Upgrade Notes

Custom collector SQL must return every LABEL column; the result schema must remain complete even when the query returns zero rows
If automation matches GitHub RPM file names directly, update pg_exporter-*.rpm to pg-exporter-*.rpm

v1.4.1 · 2026-07-29

Introduction

Mon, 01 Jan 0001 00:00:00 +0000

PG Exporter reads PostgreSQL or PgBouncer statistics and exposes them as Prometheus metrics. Prometheus collects these metrics through HTTP and stores them for queries, dashboards, and alerts.

Each exporter process monitors one PostgreSQL instance or one PgBouncer instance. To monitor both, run two processes.

How collection works

A collector is a SQL query with a YAML definition. The definition tells the exporter how to convert result columns into metrics and labels.

PG Exporter v1.4.0

Sat, 18 Jul 2026 10:41:26 +0800

v1.4.0 introduces the Snapshot Histogram metric type and the new pg_xact_age transaction age collector, along with a round of systematic hardening across HTTP routing, packaging, and the build toolchain.

New Features

New HISTOGRAM column type: SQL observations are grouped by labels into snapshot distributions. The _bucket, _count, and _sum families are Gauges. Bucket bounds must be finite and strictly increasing; +Inf is added automatically. The le label is reserved, and reload replaces the bucket layout
New pg_xact_age collector: exposes the distribution of open transaction age (pg_xact_age_seconds) and idle-in-transaction age (pg_xact_age_idle_seconds) as histograms; cluster-level collection, client backends only, 10s TTL
Default config bundle grows from 57 to 58 definition files; pg_xact_age takes slot 0450, with pg_lock / pg_lock_stat / pg_query renumbered to 0460 / 0470 / 0480 (contents unchanged)

Fixes & Improvements

HTTP route registration is isolated to a private ServeMux instead of the global DefaultServeMux, so endpoints registered by third-party libraries can no longer be exposed accidentally
--web.telemetry-path is strictly validated at startup: empty paths, paths not starting with /, paths containing ? # { }, conflicts with built-in endpoints, and non-canonical paths like //metrics that could never be matched all fail fast with a clear error
The landing page HTML-escapes the telemetry path
The primary connection pool is properly closed when --fail-fast pre-check fails
RPM / DEB packaging fixes (#105): the prometheus system user’s HOME now points to /var/lib/prometheus (where libpq looks for ~/.pgpass), and the packaged default URL gains the /postgres database name so libpq no longer falls back to a database named after the OS user
Version string unified with the v prefix: --version output, the /version endpoint, and the pg_exporter_build_info{version=...} label of official release binaries now report v1.4.0 (GoReleaser artifacts previously reported unprefixed 1.3.0); artifact file names, package versions, and Docker image tag conventions are unchanged
Histogram value casting aligned with the scalar path: timestamp and boolean columns are exempt from scale
GoReleaser embedded package metadata corrected: supported range updated to PostgreSQL 9.x - 19+ and PgBouncer 1.8 - 1.25+
make docker restores GOPROXY / GOSUMDB build-arg passthrough

Engineering & Build

Build toolchain updated to Go 1.26.5, exporter-toolkit v0.17.1, and prometheus/common v0.70.0
New regular CI verification workflow: module tidy check, generated-config drift check (make conf output must stay in sync with config/*.yml), race tests, and six-platform cross-builds
Docker build tooling consolidated: the docker/ scripts and make docker-release are removed; multi-arch release images are built by GoReleaser
Config coverage tests generalized: tests no longer assume specific collectors exist in the config directory, making trimmed custom bundles easier to maintain

Upgrade Notes

If you were running with a non-canonical telemetry path (e.g. //metrics), the process will now refuse to start — previously it started but the metrics endpoint was silently unreachable

Getting Started

Mon, 01 Jan 0001 00:00:00 +0000

Install PG Exporter and create a monitoring role. Set PG_EXPORTER_URL, start the exporter, and request /metrics. Check pg_up, then add the endpoint to Prometheus and verify that the target is up.

Download PG Exporter

Mon, 01 Jan 0001 00:00:00 +0000

Install PG Exporter from the Pigsty APT/YUM repository, a versioned RPM or DEB, a release archive, a container image, or source. Pigsty can deploy it with a monitoring stack. The page provides installation commands, release files, and checksums. Continue with the quick start to connect a database.

PG Exporter v1.3.0

Wed, 24 Jun 2026 12:04:24 +0800

v1.3.0 adds PostgreSQL 19 support, and refreshes the default collector bundle, build toolchain, and config coverage tests.

Highlights

Default support range extended from PostgreSQL 10-18+ to 10-19+
Default config bundle includes 57 config/*.yml definition files
Build dependencies updated to Go 1.26.4, lib/pq v1.12.3, Prometheus client v1.23.2, and exporter-toolkit v0.16.0
pg_recovery_state: collect pg_stat_recovery on recovery nodes, exposing promotion trigger status, replay LSN, timeline, recovery transaction time, and pause state
pg_lock_stat: collect PG19 pg_stat_lock, exposing waits, wait time, and fast-path overflow counts by locktype
pg_vacuum_score: collect the current-database summary from pg_stat_autovacuum_scores, exposing max autovacuum score and candidate table count
pg_wal_19: expose wal_fpi_bytes on PG19 as pg_wal_fpi_bytes
pg_sub_19: adapt sequence sync and logical replication conflict stats from pg_stat_subscription_stats, while keeping sync_error_count for legacy dashboards
pg_recv: recognize the PG13+ WAL receiver connecting state on PG19
pg_slot: recognize the PG19 replication slot invalidation reason idle_timeout
pg_db_confl: switch to an explicit column list to avoid accidentally exporting future view columns
pg_backup, pg_vacuuming, and pg_clustering continue reusing stable existing branches instead of changing the metric surface for low-value PG19 fields

Checksums

SHA256 checksums

Installation

Mon, 01 Jan 0001 00:00:00 +0000

Use a Linux package for a managed service, a release archive for a standalone binary, or a container for Docker and Kubernetes. Download compares these options and provides installation commands. This page lists the release files and repository setup.

Pigsty

Pigsty deploys PG Exporter with metrics storage, alert rules, and Grafana dashboards. The command below downloads Pigsty; follow its installation guide to configure and deploy the monitoring stack.

PG Exporter v1.2.2

Tue, 14 Apr 2026 20:09:59 +0800

v1.2.2 updates release builds to Go 1.26.2. Exporter features and configuration are unchanged.

Checksums

SHA256 checksums

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v1.2.2 · 2026-04-14

Compatibility

Mon, 01 Jan 0001 00:00:00 +0000

Choose an artifact for the exporter host and a collector configuration for the database version. Then install any views or extensions required by the collectors you enable. This page describes the configuration shipped with v1.4.1.

Database Targets

Target	Status	Configuration
PostgreSQL 10-18	Default support	`pg_exporter.yml` / `config/`
PostgreSQL 19	Version-specific branches included	Default config; check queries against your server build
PostgreSQL 9.1-9.6	Legacy support	`legacy/pg_exporter.yml` / `legacy/config/`
PostgreSQL 9.0 and older	Unsupported	—
PgBouncer 1.8+	Version-specific collectors	`0910`-`0940` collector files; connect to the admin database

PostgreSQL 19 branches cover recovery, locks, autovacuum scores, WAL, subscriptions, receivers, and replication slots. Version selection uses the server version number; check /stat after the first scrape to find queries that need adjustment for your server build.

PG Exporter v1.2.1

Sat, 21 Mar 2026 09:23:31 +0800

v1.2.1 updates the build toolchain, standardizes configuration formatting, and adds configuration consistency tests. Collector behavior is unchanged.

Highlights

Refresh the build toolchain: bump both release workflows and Docker build images to Go 1.26.1
Standardize config style: switch inline description values in both current and legacy configs to double-quoted form, and regenerate merged pg_exporter.yml / legacy/pg_exporter.yml
Add config consistency tests: verify split and merged configs remain equivalent, and check inline metric description style to reduce configuration drift
Refresh packaging metadata: update RPM / DEB support descriptions to PostgreSQL 9.x - 18+ and PgBouncer 1.8 - 1.25+, and refresh Pigsty documentation links

Checksums

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e70e09974ad52ba607b176b63c300610e37f44fe67d249aa9ef364bd58352585  pg-exporter_1.2.1-1_arm64.deb
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5afb4f14aa71b256cdfc93d6cc6da8a7052427d6f1c1b71900bf2593b196de50  pg_exporter-1.2.1-1.x86_64.rpm
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6fe528a242f0bbd3b89cd8b2697f48905b5c4b1398abfb3305193808c01738e9  pg_exporter-1.2.1.windows-amd64.tar.gz

v1.2.1 · 2026-03-21

Production Deployment

Mon, 01 Jan 0001 00:00:00 +0000

Install the release package, create a monitoring role, then choose systemd, Docker, or Kubernetes below. Finish by checking /metrics and adding the exporter to Prometheus.

The Command Reference lists flags, environment variables, defaults, and precedence. Command-line settings take priority over their environment aliases. Logging, action, and exporter-toolkit web flags use the command line only. Collector SQL and metric definitions belong in YAML configuration.

Process Settings

This foreground example uses .pgpass for the database password:

PG Exporter v1.2.0

Thu, 12 Feb 2026 19:37:24 +0800

v1.2.0 updates startup, hot reload, health checks, and configuration validation. It also adds a configuration bundle for PostgreSQL 9.1–9.6.

New Features

Add robust hot reload workflow: support platform-specific reload signals (SIGHUP / SIGUSR1) and strengthen POST /reload to refresh configs and query plans without process restart
Switch startup to non-blocking mode: HTTP endpoints come up first even when target precheck fails, making recovery and monitoring integration smoother
Add PostgreSQL 9.1-9.6 legacy config bundle: provide legacy/ configs and a make conf9 target for easier onboarding of EOL PostgreSQL versions
Rework health probing architecture: use cached health snapshots with periodic probes for more consistent role-based health endpoints and smoother reload behavior
Improve release engineering baseline: run go test and go vet in release workflows and bump build toolchain to Go 1.26.0

Bug Fixes

Fix multiple config parsing edge cases: reject malformed metrics entries, return explicit errors when config dirs fail to load valid YAML, and harden runtime fallbacks
Fix CLI bool flag parsing to correctly handle --flag=false style arguments
Fix /explain output/rendering behavior by adjusting content type handling and using safer template rendering
Fix predicate query and PG URL handling details: better BOOL/BOOLEAN predicate support, safer row lifecycle handling, and improved dbname query-parameter parsing/redaction
Fix resource cleanup when auto-discovered targets are removed by closing dropped server connections asynchronously
Fix metric/label validation details including const-label conflict checks, scaled default-value handling, and Prometheus naming/rule checks

Checksums

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4ec219135c49708d010af7b8a7553b8008f630574e1d4cfc7642fbf951eefafe  pg-exporter_1.2.0-1_arm64.deb
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28bf7d85862510675c64ff5181d216c6a068a23ffa56dc4bb9e6b82165ff99b5  pg_exporter-1.2.0-1.x86_64.rpm
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v1.2.0 · 2026-02-12

Security

Mon, 01 Jan 0001 00:00:00 +0000

Configure database access and HTTP access separately. Use a dedicated monitoring role for SQL, protect its credentials, and restrict the HTTP listener to monitoring clients.

Access to Protect

Access	What it permits or reveals	Control
PostgreSQL connection	Read monitoring views and execute collector SQL	Dedicated login, `pg_monitor`, `pg_hba.conf`, TLS
Target URL	Contains host, user, and often a password	`.pgpass`, secret file, file permissions, secret manager
`/metrics`	Reveals topology, object names, workload, and capacity	Private network, firewall, TLS/auth
`/explain` and `/stat`	Reveal collector definitions, selected branches, timing, and errors	Restrict or authenticate HTTP access
`/reload`	Reloads collector configuration	Restrict or authenticate HTTP access
Collector SQL	Consumes database resources and may expose labels	Query review, least privilege, timeout, TTL, cardinality review

Use a Dedicated Database Role

For PostgreSQL 10+, start with a login that inherits the built-in pg_monitor role:

PG Exporter v1.1.2

Thu, 15 Jan 2026 23:06:15 +0800

Fixed the pg_timeline configuration and updated Go dependencies.

Checksums

SHA256 checksums

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v1.1.2 · 2026-01-15

Troubleshooting

Mon, 01 Jan 0001 00:00:00 +0000

Check the process, HTTP access, database connection, then the failing collector. pg_up 1 means the last scrape reached the main target and completed its fatal collectors. Other collectors or discovered databases can still have errors.

Initial Checks

# Process and logs
systemctl status pg_exporter --no-pager
journalctl -u pg_exporter -n 100 --no-pager

# HTTP response and version
curl -fsS http://127.0.0.1:9630/version
curl -i http://127.0.0.1:9630/up

# Core metrics
curl -fsS http://127.0.0.1:9630/metrics \
  | grep -E '^(pg|pgbouncer)_(up|version|in_recovery)(\{| )'

# Collection plan and runtime statistics
curl -fsS http://127.0.0.1:9630/explain
curl -fsS http://127.0.0.1:9630/stat

Observation	Layer to investigate
Unit exits immediately	Arguments, config path, telemetry path, listen address, file permissions
Port answers but `/up` is 503	Target URL, network, authentication, `pg_hba.conf`, TLS, startup probe state
`/up` is 200 but a metric family is absent	Dynamic plan, version/role/tags/predicates, auto-discovery, disabled collector
`/metrics` returns an error or Prometheus times out	Slow query, scrape timeout, duplicate or invalid metric samples
Exporter is healthy but Prometheus target is down	Prometheus address, scheme, auth, TLS, firewall, telemetry path

Process Will Not Start

`no valid config path`

The config search order is --config, PG_EXPORTER_CONFIG, ./pg_exporter.yml, /etc/pg_exporter.yml, then /etc/pg_exporter. Confirm the file exists and is readable by the runtime user:

PG Exporter v1.1.1

Wed, 31 Dec 2025 00:03:31 +0800

Minor release with new collectors and bug fixes.

New Features

New pg_timeline collector for timeline monitoring
New pg_sub_16 collector branch to exclude parallel operations in subscriptions (PostgreSQL 16+ compatibility)

Bug Fixes

Fix: Add coalesce for slotname in pg_recv collector to handle NULL values

Checksums

SHA256 checksums

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v1.1.1 · 2025-12-31

PG Exporter v1.1.0

Mon, 15 Dec 2025 14:09:58 +0800

Updated dependencies and built with Go 1.25.5.

Collector Changes

pg_setting: Major refactor for PG10-18 compatibility with missing_ok support
- Add 15 new metrics: max_parallel_workers, max_parallel_workers_per_gather, max_parallel_maintenance_workers, shared_buffers, maintenance_work_mem, effective_cache_size, fsync, full_page_writes, autovacuum, autovacuum_max_workers, checkpoint_timeout, checkpoint_completion_target, hot_standby, synchronous_commit, io_method
- Rename work_memory_size to work_mem
- Change min_version from 9.6 to 10, explicit ::int type casting
pg_size: Fix log directory size detection, use logging_collector check instead of path pattern matching
pg_table: Performance optimization, replace LATERAL subqueries with JOIN for better query performance; fix tuples and frozenxid metric type from COUNTER to GAUGE; increase timeout from 1s to 2s
pg_vacuuming: Add PG17 collector branch with new metrics indexes_total, indexes_processed, dead_tuple_bytes for index vacuum progress tracking
pg_query: Increase timeout from 1s to 2s for high-load scenarios
pg_io: Fix typo in reuses description (“in reused” -> “is reused”)
pg_checkpointer: Fix description for pg_checkpointer_10 (“9.4+” -> “9.4-17”)
pg_db_confl: Fix description for pg_db_confl_15 (“9.1 - 16” -> “9.1 - 15”)
Format alignment fixes for pg_db, pg_indexing, pg_clustering, pg_backup

Other Changes

Fix release year by @anayrat

Checksums

SHA256 checksums

Collector Configuration

Mon, 01 Jan 0001 00:00:00 +0000

A YAML collector defines a SQL query, its metrics, and when to run it. This page describes the configuration used by stable v1.4.1. For process flags and environment variables, see Command Reference.

Load one YAML file or a directory of YAML files. The default pg_exporter.yml combines 57 collector files and one schema reference from config/.

Configuration Loading

PG Exporter searches for configuration in the following order:

Command-line argument: --config=/path/to/config
Environment variable: PG_EXPORTER_CONFIG=/path/to/config
Current directory: ./pg_exporter.yml
System config file: /etc/pg_exporter.yml
System config directory: /etc/pg_exporter/

Directory mode details:

PG Exporter v1.0.3

Thu, 20 Nov 2025 17:19:38 +0800

Updated dependencies and built with Go 1.25.4.
Fix #80 Conflict with libpq env variables
Change default value of auto-discovery to true by @kadaffy

Checksums

SHA256 checksums

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v1.0.3 · 2025-11-20

Bundled Collectors

Mon, 01 Jan 0001 00:00:00 +0000

PG Exporter v1.4.1 ships 58 YAML files (57 collector files and one schema reference) under config/. They are merged in filename order into the default pg_exporter.yml by make conf.

The filename prefix is an ordering convention, not a metric name. A file can define multiple version- or role-specific branches with the same public metric namespace. On the first scrape, PG Exporter evaluates server facts and selects eligible branches; GET /explain shows that plan for the connected target.

Command Reference

Mon, 01 Jan 0001 00:00:00 +0000

This page lists flags and environment variables for stable PG Exporter v1.4.1. Use it to choose process flags and environment variables; use Collector Configuration for the YAML and SQL metric schema.

pg_exporter [flags]
pg_exporter --help       # concise help
pg_exporter --help-long  # expanded help
pg_exporter --help-man   # man-page form

Boolean options use --flag to enable and --no-flag to disable. The equivalent --flag=true and --flag=false forms are normalized before parsing.

Target and Configuration Precedence

PG Exporter selects the connection URL in this order:

PG Exporter v1.0.2

Thu, 14 Aug 2025 13:12:49 +0800

Updated dependencies and built with Go 1.25.0.
Added the PG Exporter website.
Release with GoReleaser for more operating systems and architectures with CI/CD pipeline:
- add windows amd64 support
- add linux ppc64le support

Checksums

SHA256 checksums

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v1.0.2 · 2025-08-14

HTTP API

Mon, 01 Jan 0001 00:00:00 +0000

pg_exporter serves metrics, health checks, and management endpoints on :9630 by default. This reference describes stable v1.4.1. Set the address with --web.listen-address; see Command Reference.

Endpoint	Method	Result
`/metrics`	GET	Prometheus metrics; change the path with `--web.telemetry-path`
`/up`	GET, HEAD	Main target availability; aliases `/health`, `/liveness`, `/readiness`, `/read`
`/primary`	GET, HEAD	Primary role; aliases `/leader`, `/master`, `/read-write`, `/rw`
`/replica`	GET, HEAD	Replica role; aliases `/standby`, `/slave`, `/read-only`, `/ro`
`/reload`	GET, POST	Reload collector configuration
`/explain`	GET	Selected collectors for the main target, as plain text
`/stat`	GET	Collector statistics for the main target, as plain text
`/version`	GET	Version and build information, as plain text
`/`	GET	HTML page with a link to metrics

The table lists the intended methods. Only /reload explicitly rejects other methods. In v1.4.1, unmatched paths reach the root page, so use the documented paths for probes.

PG Exporter v1.0.1

Thu, 17 Jul 2025 09:15:40 +0800

Add Docker Hub images: pgsty/pg_exporter
Updated Go dependencies and built with Go 1.24.5.
Disable pg_tsdb_hypertable collector by default, since timescaledb catalog is changed.

Checksums

d5e2d6a656eef0ae1b29cd49695f9773  pg_exporter-1.0.1-1.aarch64.rpm
cb01bb78d7b216a235363e9342803cb3  pg_exporter-1.0.1-1.x86_64.rpm
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718f6afc004089f12c1ca6553f9b9ba5  pg-exporter_1.0.1_amd64.deb
57da7a8005cdf91ba8c1fb348e0d7367  pg-exporter_1.0.1_arm64.deb

v1.0.1 · 2025-07-17

Development

Mon, 01 Jan 0001 00:00:00 +0000

PG Exporter keeps SQL and metric definitions in YAML. The Go runtime loads those definitions, collects results, and serves HTTP requests. Start a change in the layer that owns the behavior.

Stable v1.4.1 is the reference for the user manuals. Development commit c0ba58a also contains unreleased Composite, Patroni, pgBackRest, and PostgreSQL log features. Their contracts and status are recorded in Design.

Repository Layout

Path	Purpose
`exporter/`	CLI parsing, URL/config loading, planning, execution, metrics, health state, HTTP handlers, tests
`config/`	57 collector files and one schema reference for PostgreSQL 10–19 and PgBouncer
`pg_exporter.yml`	Generated monolithic default config (`make conf`)
`legacy/config/`	Collector definitions for PostgreSQL 9.1-9.6
`legacy/pg_exporter.yml`	Generated legacy monolithic config (`make conf9`)
Design Records	Canonical rationale, rejected alternatives, invariants, and dated release boundaries
`monitor/`	Grafana dashboards and database initialization helper
`package/`	systemd environment/unit files and package scripts
`.goreleaser.yml`	Cross-platform archives, RPM/DEB packages, checksums, Docker images, and GitHub Release

Toolchain

The v1.4.1 tag declares Go 1.26.5; development commit c0ba58a declares 1.27.0. Use the toolchain required by the revision you build. To build the stable tag:

PG Exporter v1.0.0

Tue, 06 May 2025 23:43:42 +0800

Changes

Added PostgreSQL 18 collector branches:

Branch	Changes
`pg_wal_18`	Removed `write`, `sync`, `write_time`, and `sync_time`; PostgreSQL moved these statistics to `pg_stat_io`
`pg_checkpointer_18`	Added `num_done` and `slru_written`
`pg_db_18`	Added `parallel_workers_to_launch` and `parallel_workers_launched`
`pg_table_18`	Added `table_parallel_workers_to_launch` and `table_parallel_workers_launched`
`pg_io_18`	Added WAL statistics and `read_bytes`, `write_bytes`, and `extend_bytes`; removed `op_bytes`
`pg_vacuuming_18`	Added `delay_time`

Checksums

MD5 checksums published in the GitHub Release:

33fe4dd8c5af56bef9b78fbf8f4fbbc9  pg_exporter-1.0.0-1.aarch64.rpm
eba8426b2cf50a58db5353562727004a  pg_exporter-1.0.0-1.x86_64.rpm
f691282245f9ef7e712b88985ca0da11  pg_exporter-v1.0.0.darwin-amd64.tar.gz
c133c6077857edd500ab325bad4dc438  pg_exporter-v1.0.0.darwin-arm64.tar.gz
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395715fbee8894baf0e9c173f8e1babd  pg_exporter-v1.0.0.linux-arm64.tar.gz
f3b23e592f33587d0055984a6d9c2ef3  pg-exporter_1.0.0_amd64.deb
a7305b9c46f8a0d476c9835cc8f01dfe  pg-exporter_1.0.0_arm64.deb

v1.0.0 · 2025-05-06

PG Exporter v0.9.0

Sat, 26 Apr 2025 23:12:49 +0800

Default Collectors

new metrics collector for timescaledb hypertable
new metrics collector for citus dist node
new metrics collector for pg_wait_sampling wait event profile
pg_slot overhaul: Add 16/17 pg_replication_slot metrics
allow pg_slot collector run on replica since 16/17
refactor pg_wait collector to agg from all processes
restrict pg_clustering, pg_indexing, pg_vacuuming run on primary
mark all reset_time as GAUGE rather than COUNTER
fix pg_recovery_prefetch_skip_fpw type from GAUGE to COUNTER
fix pg_recv.state type from LABEL to GAUGE
Format collector in compact mode
new default metric pg_exporter_build_info / pgbouncer_exporter_build_info
add server_encoding to pg_meta collector

Added 12 pg_setting metrics: wal_block_size, segment_size, wal_segment_size, wal_level, work_memory_size, shared_memory_size, hugepage_count, hugepage_status, max_wal_size, min_wal_size, max_slot_wal_keep_size, archive_mode.

Exporter Codebase

normalize collector branch name with min pg ver suffix
Add license file to binary packages
Moved the repository from Vonng/pg_exporter to pgsty/pg_exporter.
refactor server.go to reduce Compatible and PostgresPrecheck complexity
rename metrics collector with extra number prefix for better sorting
Updated dependencies.
execute fatal collectors ahead of all non-fatal collectors, and fail fast

v0.9.0 · 2025-04-26

PG Exporter v0.8.1

Sat, 29 Mar 2025 12:33:55 +0800

Changes

Updated dependencies.
Bump golang.org/x/net from 0.35.0 to 0.36.0 #67
Update docker images building tags

v0.8.1 · 2025-03-29

PG Exporter v0.8.0

Fri, 14 Feb 2025 15:40:25 +0800

Changes

Add PgBouncer 1.24 new metrics support (stat, pool, database)
Fix: 310-pg_size.yml fails if log dir not set properly #64 by @Süleyman Vurucu
Build with the latest Go 1.24 and bump all dependencies
Refactor logging with the standard log/slog instead of go-kit Full changelog

v0.8.0 · 2025-02-14

PG Exporter v0.7.1

Sun, 29 Dec 2024 17:00:02 +0800

Changes

Routine update with dependabot

Feat: support specifying configuration as Reader by @ringerc in #62
Bump golang.org/x/crypto from 0.21.0 to 0.31.0 by @dependabot in #63
Fix some typos Full changelog

v0.7.1 · 2024-12-29

PG Exporter v0.7.0

Tue, 13 Aug 2024 19:41:28 +0800

Changes

Updated the codebase for Go 1.22.4.

PG Exporter v0.6.1

Fri, 26 Jan 2024 17:26:17 +0800

Changes

Updated golang.org/x/net from v0.10.0 to v0.17.0 and golang.org/x/crypto to v0.17.0 for security fixes (#38 covers x/crypto)
Fix connect-timeout propagation (#37), contributed by @mouchar

Checksums

The original release published MD5 checksums for its archives and packages:

107a67ca74b1d6e7bbe773694a48f6ab  pg_exporter-v0.6.1.darwin-amd64.tar.gz
75b57566838c38092a9c45531c031561  pg_exporter-v0.6.1.darwin-arm64.tar.gz
9e55128671b31dd28d6bca3d0429de8f  pg_exporter-v0.6.1.linux-amd64.tar.gz
68a8b9537f6deb1773d8bea9182bd613  pg_exporter-v0.6.1.linux-arm64.tar.gz
0b0cd62c59cab6d1ab8772d820e599db  pg-exporter_0.6.1_amd64.deb
947126150b71081d0592d7f1fce0aaac  pg-exporter_0.6.1_arm64.deb
6a3608b965143441a5921d3017318146  pg_exporter-0.6.1-1.aarch64.rpm
b3c9f2edd28810cae81cd0edad9eae5d  pg_exporter-0.6.1-1.x86_64.rpm

v0.6.1 · 2024-01-26

PG Exporter v0.6.0

Wed, 18 Oct 2023 12:54:49 +0800

Changes

Updated dependencies to address reported vulnerabilities.
Added PostgreSQL 16 collectors and PostgreSQL 15 compatibility fixes (#35, @japinli).
Added ARM64 packages.
Removed the fixed monitor schema from pg_query queries. pg_stat_statements must be visible through search_path, such as when installed in public.
Accepted .yml as well as .yaml in configuration directories (#34, @japinli).
Changed PgBouncer version-parsing messages from info to debug level.
Added the missing relid column to pg_table_10_12.

v0.6.0 · 2023-10-18

PG Exporter v0.5.0

Thu, 28 Apr 2022 07:27:37 +0800

Exporter changes

Used nFPM to build RPM and DEB packages.
Added column.default to substitute a value for NULL.
Added column.scale to scale numeric values, such as microseconds to seconds.
Fixed /stat output.
Added the pgsty/pg_exporter Docker image.

Collector changes

Converted time metrics to seconds in pg_wal, pg_query, pg_db, pg_bgwriter, pg_ssl, and pgbouncer_stat.
Moved pg_class metrics into pg_table and pg_index.
Enabled pg_table_size by default.

v0.5.0 · 2022-04-28

PG Exporter v0.4.1

Tue, 08 Mar 2022 18:48:00 +0800

Changes

Excluded Citus and TimescaleDB internal schemas from object monitoring.
Removed duplicate pg_statio rows.
Added PgBouncer 1.16 support.
Fixed overlapping pg_repl collector branches on PostgreSQL 12.
Added -T, --connect-timeout, and PG_EXPORTER_CONNECT_TIMEOUT to control connection timeouts, including for remote targets.
Renamed the RPM configuration file from pg_exporter.yaml to pg_exporter.yml.

v0.4.1 · 2022-03-08

PG Exporter v0.4.0

Mon, 12 Jul 2021 16:09:02 +0800

Changes

Added PostgreSQL 14 support.
Revised the default metric configuration while preserving support for older configuration files.
Added --auto-discovery, --include-database, and --exclude-database.
Added multi-database collection through automatic discovery.

v0.4.0 · 2021-07-12

PG Exporter v0.3.2

Mon, 01 Feb 2021 11:12:06 +0800

Changes

Fixed an edge case in redacted connection strings.
Corrected documentation and spelling errors.

v0.3.2 · 2021-02-01

PG Exporter v0.3.1

Fri, 04 Dec 2020 17:27:21 +0800

Changes

Fixed default-configuration errors, especially on PostgreSQL versions below 13:

Restricted primary_conninfo collection to the supported collector branch.
Added funcid to pg_func labels to distinguish functions with the same name.
Corrected the program name in version output to pg_exporter.

v0.3.1 · 2020-12-04

PG Exporter v0.3.0

Thu, 29 Oct 2020 16:47:32 +0800

Changes

Updated the default configuration for PostgreSQL 13 metrics, including pg_slru, pg_shmem, pg_query13, and pg_backup.
Added HTTP endpoints for health and recovery-state checks.
Added a startup HTTP server that reports pg_up 0 until initialization finishes.
Added sslmode=disable when the connection URL omits sslmode.
Fixed bugs and spelling errors.

v0.3.0 · 2020-10-29

PG Exporter v0.2.0

Sat, 21 Mar 2020 19:10:25 +0800

Changes

Added RPM packages for YUM and a Linux service definition.
Added the skip option to query configuration.
Fixed pgbouncer_up.
Added configuration reload support.

v0.2.0 · 2020-03-21

PG Exporter v0.1.2

Thu, 20 Feb 2020 15:12:29 +0800

Changes

Fixed pgbouncer_up.
Added dynamic configuration reload.
Removed shard-related logic.
Added a bulky mode to the default configuration.

v0.1.2 · 2020-02-20

PG Exporter v0.1.1

Fri, 10 Jan 2020 01:30:28 +0800

Changes

Fixed a startup hang when a query failed.

v0.1.1 · 2020-01-10

PG Exporter v0.1.0

Wed, 08 Jan 2020 21:10:42 +0800

Changes

The first stable release.

v0.1.0 · 2020-01-08

PG Exporter v0.0.5

Wed, 08 Jan 2020 20:12:11 +0800

This is an early repository tag without a separate GitHub Release object. This archival note is based on the tag commit and historical release summary.

Changes

Add per-collector query timeouts
Replace the earlier skip_error behavior with the fatal collector policy
Revise collector priority semantics
Fix the built-in pg_up metric
Add documentation for each bundled collector

v0.0.5 · 2020-01-08

PG Exporter v0.0.4

Fri, 20 Dec 2019 17:22:44 +0800

Changes

Tested across more than 200 production nodes for about two weeks.

v0.0.4 · 2019-12-20

PG Exporter v0.0.3

Sat, 14 Dec 2019 00:03:23 +0800

Changes

Passed production testing while the project remained under active development.

v0.0.3 · 2019-12-14

PG Exporter v0.0.2

Mon, 09 Dec 2019 20:43:23 +0800

Changes

An early version made available for trial use.

v0.0.2 · 2019-12-09

PG Exporter v0.0.1

Mon, 09 Dec 2019 14:12:22 +0800

This early version has a Git tag but no separate GitHub Release. The note is based on the tag and historical release summary.

Changes

Added PgBouncer mode.

v0.0.1 · 2019-12-09

Turning PostgreSQL CSV Logs into Durable Metrics

Mon, 24 Aug 2026 12:17:38 +0800

Implemented but unreleased. A default-off worker persists CSV cursors and aggregates before publishing cumulative log metrics.

Caching pgBackRest Metrics Outside the Scrape Path

Sun, 23 Aug 2026 19:34:09 +0800

Implemented but unreleased. Background collection keeps command and repository latency out of Prometheus requests. Failed refreshes retain the last valid backup state.

The PostgreSQL Observability Product We Chose Not to Build

Thu, 13 Aug 2026 14:17:01 +0800

Superseded on 2026-08-24. CSV parsing and durable-state requirements became a bounded log-metrics feature; the separate product was dropped.

One Endpoint, Several Sources: The Composite Exporter Contract

Tue, 11 Aug 2026 23:50:55 +0800

Implemented but unreleased. PostgreSQL remains authoritative. Live sources share a timeout; cached sources publish immutable snapshots.

Snapshot Histograms Are Gauges, Not Counters

Sat, 11 Jul 2026 22:06:29 +0800

Shipped in v1.4.0. Each SQL execution builds a fresh distribution. Buckets, count, and sum are Gauges and can decrease between scrapes.

Adopting the Victoria observability stack in Pigsty

Wed, 17 Dec 2025 00:00:00 +0000

The December 2025 Pigsty v4 beta introduced VictoriaMetrics, VictoriaLogs, and VictoriaTraces. This article records the motivation, test results, and deployment model.

PGCon.Dev 2024: The Week PostgreSQL Commits Paused

Mon, 17 Jun 2024 00:00:00 +0000

Notes from PGCon.Dev 2024: extension packaging, observability, community discussions, and plans for PostgreSQL.

PostgreSQL Macro Query Optimization with pg_stat_statements

Thu, 26 Oct 2023 00:00:00 +0000

Query optimization is one of the core responsibilities of DBAs. This article introduces how to use metrics provided by pg_stat_statements for macro-level PostgreSQL query optimization.

Monitor Existing PostgreSQL with Pigsty: RDS, PolarDB, and Self-Hosted Databases

Sun, 17 Sep 2023 00:00:00 +0000

Deploy Pigsty on ECS and connect existing PostgreSQL databases, using Alibaba Cloud PolarDB and RDS for PostgreSQL as examples.

Diagnose PostgreSQL slow queries

Tue, 23 Feb 2021 00:00:00 +0000

Use query statistics, logs, and monitoring to find a slow query, test its cause, and verify a fix.

The First Pigsty Release

Wed, 13 Jan 2021 00:00:00 +0000

Introducing Pigsty’s first release: PostgreSQL monitoring, high-availability cluster provisioning, and a local demo environment.

Golden Monitoring Metrics: Errors, Latency, Throughput, Saturation

Fri, 06 Nov 2020 00:00:00 +0000

Understanding the golden monitoring metrics in PostgreSQL

Introducing Pigsty, a PostgreSQL Monitoring System

Sat, 30 May 2020 00:00:00 +0000

The PostgreSQL monitoring system I built: its architecture, monitoring hierarchy, instance and cluster dashboards, and slow-query analysis.

PostgreSQL's KPI

Fri, 29 May 2020 00:00:00 +0000

PG Load measures accumulated transaction time per second, normalized by a chosen concurrency value. This article derives the metric and shows how to use it for alerting and capacity assessment.

An Overview of PostgreSQL Monitoring

Mon, 17 Dec 2018 00:00:00 +0000

A tour of a PostgreSQL monitoring system: dashboards, architecture, key metrics, and the statistics behind them.

Relation Bloat Monitoring and Management

Sat, 06 Oct 2018 00:00:00 +0000

Estimate PostgreSQL table and index bloat from statistics, then use VACUUM FULL or pg_repack to reclaim space.

Monitoring Table Size in PostgreSQL

Mon, 14 May 2018 00:00:00 +0000

Measure PostgreSQL table storage, including indexes, TOAST, and relation forks.

PostgreSQL Server Log Configuration

Tue, 06 Feb 2018 00:00:00 +0000

CSV logs can be imported into PostgreSQL tables or queried through file_fdw for analysis.