diff --git a/.circleci/config.yml b/.circleci/config.yml index 3d80a4d1c..db3cad4e5 100644 --- a/.circleci/config.yml +++ b/.circleci/config.yml @@ -2,13 +2,13 @@ version: 2.1 orbs: - prometheus: prometheus/prometheus@0.11.0 + prometheus: prometheus/prometheus@0.16.0 executors: # This must match .promu.yml. golang: docker: - - image: circleci/golang:1.16 + - image: cimg/go:1.18 jobs: test: @@ -22,7 +22,7 @@ jobs: integration: docker: - - image: circleci/golang:1.16 + - image: cimg/go:1.18 - image: << parameters.postgres_image >> environment: POSTGRES_DB: circle_test @@ -56,13 +56,11 @@ workflows: matrix: parameters: postgres_image: - - circleci/postgres:9.4 - - circleci/postgres:9.5 - - circleci/postgres:9.6 - circleci/postgres:10 - circleci/postgres:11 - circleci/postgres:12 - circleci/postgres:13 + - cimg/postgres:14.1 - prometheus/build: name: build filters: diff --git a/.github/ISSUE_TEMPLATE/bug_report.md b/.github/ISSUE_TEMPLATE/bug_report.md index f75e9b5ab..22f42bc20 100644 --- a/.github/ISSUE_TEMPLATE/bug_report.md +++ b/.github/ISSUE_TEMPLATE/bug_report.md @@ -37,7 +37,7 @@ assignees: '' insert list of flags used here ``` -* PostgresSQL version: +* PostgreSQL version: insert PostgreSQL version here diff --git a/.github/workflows/golangci-lint.yml b/.github/workflows/golangci-lint.yml new file mode 100644 index 000000000..6034bcbf8 --- /dev/null +++ b/.github/workflows/golangci-lint.yml @@ -0,0 +1,30 @@ +name: golangci-lint +on: + push: + paths: + - "go.sum" + - "go.mod" + - "**.go" + - "scripts/errcheck_excludes.txt" + - ".github/workflows/golangci-lint.yml" + - ".golangci.yml" + pull_request: + +jobs: + golangci: + name: lint + runs-on: ubuntu-latest + steps: + - name: Checkout repository + uses: actions/checkout@v3 + - name: install Go + uses: actions/setup-go@v2 + with: + go-version: 1.18.x + - name: Install snmp_exporter/generator dependencies + run: sudo apt-get update && sudo apt-get -y install libsnmp-dev + if: github.repository == 'prometheus/snmp_exporter' + - name: Lint + uses: golangci/golangci-lint-action@v3.2.0 + with: + version: v1.45.2 diff --git a/.promu.yml b/.promu.yml index a4c4c598c..d63d0444d 100644 --- a/.promu.yml +++ b/.promu.yml @@ -1,6 +1,6 @@ go: # This must match .circle/config.yml. - version: 1.16 + version: 1.18 repository: path: github.com/prometheus-community/postgres_exporter build: diff --git a/.yamllint b/.yamllint new file mode 100644 index 000000000..3878a31d3 --- /dev/null +++ b/.yamllint @@ -0,0 +1,28 @@ +--- +extends: default + +rules: + braces: + max-spaces-inside: 1 + level: error + brackets: + max-spaces-inside: 1 + level: error + commas: disable + comments: disable + comments-indentation: disable + document-start: disable + indentation: + spaces: consistent + indent-sequences: consistent + key-duplicates: + ignore: | + config/testdata/section_key_dup.bad.yml + line-length: disable + truthy: + ignore: | + .github/workflows/codeql-analysis.yml + .github/workflows/funcbench.yml + .github/workflows/fuzzing.yml + .github/workflows/prombench.yml + .github/workflows/golangci-lint.yml diff --git a/CHANGELOG.md b/CHANGELOG.md index 9d17767ad..0572bf5dc 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -1,3 +1,12 @@ +## master / unreleased + +* [CHANGE] pg_stat_bgwriter counter metrics had the `_total` suffix added #556 +* [ENHANCEMENT] Add pg_database_size_bytes metric #613 + +## 0.10.1 / 2022-01-14 + +* [BUGFIX] Fix broken log-level for values other than debug. #560 + ## 0.10.0 / 2021-07-08 * [ENHANCEMENT] Add ability to set included databases when autoDiscoverDatabases is enabled #499 diff --git a/CODE_OF_CONDUCT.md b/CODE_OF_CONDUCT.md index 9a1aff412..d325872bd 100644 --- a/CODE_OF_CONDUCT.md +++ b/CODE_OF_CONDUCT.md @@ -1,3 +1,3 @@ -## Prometheus Community Code of Conduct +# Prometheus Community Code of Conduct -Prometheus follows the [CNCF Code of Conduct](https://github.com/cncf/foundation/blob/master/code-of-conduct.md). +Prometheus follows the [CNCF Code of Conduct](https://github.com/cncf/foundation/blob/main/code-of-conduct.md). diff --git a/MAINTAINERS.md b/MAINTAINERS.md index 69b8113b9..a3032f51d 100644 --- a/MAINTAINERS.md +++ b/MAINTAINERS.md @@ -1,2 +1,3 @@ * Ben Kochie @SuperQ * William Rouesnel @wrouesnel +* Joe Adams @sysadmind diff --git a/Makefile.common b/Makefile.common index ce80d530a..c263b733f 100644 --- a/Makefile.common +++ b/Makefile.common @@ -78,17 +78,23 @@ ifneq ($(shell which gotestsum),) endif endif -PROMU_VERSION ?= 0.12.0 +PROMU_VERSION ?= 0.13.0 PROMU_URL := https://github.com/prometheus/promu/releases/download/v$(PROMU_VERSION)/promu-$(PROMU_VERSION).$(GO_BUILD_PLATFORM).tar.gz GOLANGCI_LINT := GOLANGCI_LINT_OPTS ?= -GOLANGCI_LINT_VERSION ?= v1.39.0 +GOLANGCI_LINT_VERSION ?= v1.45.2 # golangci-lint only supports linux, darwin and windows platforms on i386/amd64. # windows isn't included here because of the path separator being different. ifeq ($(GOHOSTOS),$(filter $(GOHOSTOS),linux darwin)) ifeq ($(GOHOSTARCH),$(filter $(GOHOSTARCH),amd64 i386)) - GOLANGCI_LINT := $(FIRST_GOPATH)/bin/golangci-lint + # If we're in CI and there is an Actions file, that means the linter + # is being run in Actions, so we don't need to run it here. + ifeq (,$(CIRCLE_JOB)) + GOLANGCI_LINT := $(FIRST_GOPATH)/bin/golangci-lint + else ifeq (,$(wildcard .github/workflows/golangci-lint.yml)) + GOLANGCI_LINT := $(FIRST_GOPATH)/bin/golangci-lint + endif endif endif @@ -118,7 +124,7 @@ endif %: common-% ; .PHONY: common-all -common-all: precheck style check_license lint unused build test +common-all: precheck style check_license lint yamllint unused build test .PHONY: common-style common-style: @@ -154,7 +160,7 @@ endif update-go-deps: @echo ">> updating Go dependencies" @for m in $$($(GO) list -mod=readonly -m -f '{{ if and (not .Indirect) (not .Main)}}{{.Path}}{{end}}' all); do \ - $(GO) get $$m; \ + $(GO) get -d $$m; \ done GO111MODULE=$(GO111MODULE) $(GO) mod tidy ifneq (,$(wildcard vendor)) @@ -198,6 +204,15 @@ else endif endif +.PHONY: common-yamllint +common-yamllint: + @echo ">> running yamllint on all YAML files in the repository" +ifeq (, $(shell which yamllint)) + @echo "yamllint not installed so skipping" +else + yamllint . +endif + # For backward-compatibility. .PHONY: common-staticcheck common-staticcheck: lint diff --git a/README.md b/README.md index fa247631c..4d23603a6 100644 --- a/README.md +++ b/README.md @@ -7,7 +7,7 @@ Prometheus exporter for PostgreSQL server metrics. -CI Tested PostgreSQL versions: `9.4`, `9.5`, `9.6`, `10`, `11`, `12`, `13` +CI Tested PostgreSQL versions: `9.4`, `9.5`, `9.6`, `10`, `11`, `12`, `13`, `14` ## Quick Start This package is available for Docker: @@ -41,6 +41,12 @@ This will build the docker image as `prometheuscommunity/postgres_exporter:${bra * `help` Show context-sensitive help (also try --help-long and --help-man). +* `collector.database` + Enable the pg_database collector. Default is `enabled` + +* `collector.bgwriter` + Enable the pg_stat_bgwriter collector. Default is `enabled` + * `web.listen-address` Address to listen on for web interface and telemetry. Default is `:9187`. @@ -48,13 +54,13 @@ This will build the docker image as `prometheuscommunity/postgres_exporter:${bra Path under which to expose metrics. Default is `/metrics`. * `disable-default-metrics` - Use only metrics supplied from `queries.yaml` via `--extend.query-path`. + Use only metrics supplied from `queries.yaml` via `--extend.query-path`. Default is `false`. * `disable-settings-metrics` - Use the flag if you don't want to scrape `pg_settings`. + Use the flag if you don't want to scrape `pg_settings`. Default is `false`. * `auto-discover-databases` - Whether to discover the databases on a server dynamically. + Whether to discover the databases on a server dynamically. Default is `false`. * `extend.query-path` Path to a YAML file containing custom queries to run. Check out [`queries.yaml`](queries.yaml) @@ -186,8 +192,8 @@ The -extend.query-path command-line argument specifies a YAML file containing ad Some examples are provided in [queries.yaml](queries.yaml). ### Disabling default metrics -To work with non-officially-supported postgres versions you can try disabling (e.g. 8.2.15) -or a variant of postgres (e.g. Greenplum) you can disable the default metrics with the `--disable-default-metrics` +To work with non-officially-supported postgres versions (e.g. 8.2.15), +or variants of postgres (e.g. Greenplum), you can disable the default metrics with the `--disable-default-metrics` flag. This removes all built-in metrics, and uses only metrics defined by queries in the `queries.yaml` file you supply (so you must supply one, otherwise the exporter will return nothing but internal statuses and not your database). @@ -203,14 +209,10 @@ If you want to include only subset of databases, you can use option `--include-d ### Running as non-superuser -To be able to collect metrics from `pg_stat_activity` and `pg_stat_replication` -as non-superuser you have to create functions and views as a superuser, and -assign permissions separately to those. - -In PostgreSQL, views run with the permissions of the user that created them so -they can act as security barriers. Functions need to be created to share this -data with the non-superuser. Only creating the views will leave out the most -important bits of data. +To be able to collect metrics from `pg_stat*` views as non-superuser in PostgreSQL +server versions >= 10 you can grant the `pg_monitor` or `pg_read_all_stats` [built-in roles](https://www.postgresql.org/docs/current/predefined-roles.html) to the user. If +you need to monitor older PostgreSQL servers, you will have to create functions +and views as a superuser, and assign permissions separately to those. ```sql -- To use IF statements, hence to be able to check if the user exists before @@ -239,9 +241,23 @@ ALTER USER postgres_exporter SET SEARCH_PATH TO postgres_exporter,pg_catalog; -- If deploying as non-superuser (for example in AWS RDS), uncomment the GRANT -- line below and replace with your root user. -- GRANT postgres_exporter TO ; + +GRANT CONNECT ON DATABASE postgres TO postgres_exporter; +``` + +Run following command if you use PostgreSQL versions >= 10 +```sql +GRANT pg_monitor to postgres_exporter; +``` + +Run following SQL commands only if you use PostgreSQL versions older than 10. +In PostgreSQL, views run with the permissions of the user that created them so +they can act as security barriers. Functions need to be created to share this +data with the non-superuser. Only creating the views will leave out the most +important bits of data. +```sql CREATE SCHEMA IF NOT EXISTS postgres_exporter; GRANT USAGE ON SCHEMA postgres_exporter TO postgres_exporter; -GRANT CONNECT ON DATABASE postgres TO postgres_exporter; CREATE OR REPLACE FUNCTION get_pg_stat_activity() RETURNS SETOF pg_stat_activity AS $$ SELECT * FROM pg_catalog.pg_stat_activity; $$ @@ -267,6 +283,7 @@ AS GRANT SELECT ON postgres_exporter.pg_stat_replication TO postgres_exporter; +CREATE EXTENSION IF NOT EXISTS pg_stat_statements; CREATE OR REPLACE FUNCTION get_pg_stat_statements() RETURNS SETOF pg_stat_statements AS $$ SELECT * FROM public.pg_stat_statements; $$ LANGUAGE sql diff --git a/SECURITY.md b/SECURITY.md index 67741f015..fed02d85c 100644 --- a/SECURITY.md +++ b/SECURITY.md @@ -3,4 +3,4 @@ The Prometheus security policy, including how to report vulnerabilities, can be found here: -https://prometheus.io/docs/operating/security/ + diff --git a/VERSION b/VERSION index 78bc1abd1..571215736 100644 --- a/VERSION +++ b/VERSION @@ -1 +1 @@ -0.10.0 +0.10.1 diff --git a/cmd/postgres_exporter/datasource.go b/cmd/postgres_exporter/datasource.go index 3bbe2f0a7..90d797b63 100644 --- a/cmd/postgres_exporter/datasource.go +++ b/cmd/postgres_exporter/datasource.go @@ -21,7 +21,7 @@ import ( "regexp" "strings" - "github.com/go-kit/kit/log/level" + "github.com/go-kit/log/level" "github.com/prometheus/client_golang/prometheus" ) diff --git a/cmd/postgres_exporter/main.go b/cmd/postgres_exporter/main.go index 25f94a745..35db723a2 100644 --- a/cmd/postgres_exporter/main.go +++ b/cmd/postgres_exporter/main.go @@ -17,8 +17,9 @@ import ( "net/http" "os" - "github.com/go-kit/kit/log" - "github.com/go-kit/kit/log/level" + "github.com/go-kit/log" + "github.com/go-kit/log/level" + "github.com/prometheus-community/postgres_exporter/collector" "github.com/prometheus/client_golang/prometheus" "github.com/prometheus/client_golang/prometheus/promhttp" "github.com/prometheus/common/promlog" @@ -114,6 +115,17 @@ func main() { prometheus.MustRegister(exporter) + pe, err := collector.NewPostgresCollector( + logger, + dsn, + []string{}, + ) + if err != nil { + level.Error(logger).Log("msg", "Failed to create PostgresCollector", "err", err.Error()) + os.Exit(1) + } + prometheus.MustRegister(pe) + http.Handle(*metricPath, promhttp.Handler()) http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) { w.Header().Set("Content-Type", "text/html; charset=UTF-8") // nolint: errcheck diff --git a/cmd/postgres_exporter/namespace.go b/cmd/postgres_exporter/namespace.go index 1b9e970ef..ab1e74ea0 100644 --- a/cmd/postgres_exporter/namespace.go +++ b/cmd/postgres_exporter/namespace.go @@ -20,7 +20,7 @@ import ( "time" "github.com/blang/semver" - "github.com/go-kit/kit/log/level" + "github.com/go-kit/log/level" "github.com/lib/pq" "github.com/prometheus/client_golang/prometheus" ) diff --git a/cmd/postgres_exporter/pg_setting.go b/cmd/postgres_exporter/pg_setting.go index 4b0e2124f..bfe4c6c52 100644 --- a/cmd/postgres_exporter/pg_setting.go +++ b/cmd/postgres_exporter/pg_setting.go @@ -19,10 +19,17 @@ import ( "strconv" "strings" - "github.com/go-kit/kit/log/level" + "github.com/go-kit/log/level" "github.com/prometheus/client_golang/prometheus" ) +var ( + settingUnits = []string{ + "ms", "s", "min", "h", "d", + "B", "kB", "MB", "GB", "TB", + } +) + // Query the pg_settings view containing runtime variables func querySettings(ch chan<- prometheus.Metric, server *Server) error { level.Debug(logger).Log("msg", "Querying pg_setting view", "server", server) @@ -31,7 +38,7 @@ func querySettings(ch chan<- prometheus.Metric, server *Server) error { // // NOTE: If you add more vartypes here, you must update the supported // types in normaliseUnit() below - query := "SELECT name, setting, COALESCE(unit, ''), short_desc, vartype FROM pg_settings WHERE vartype IN ('bool', 'integer', 'real');" + query := "SELECT name, setting, COALESCE(unit, ''), short_desc, vartype FROM pg_settings WHERE vartype IN ('bool', 'integer', 'real') AND name != 'sync_commit_cancel_wait';" rows, err := server.db.Query(query) if err != nil { @@ -93,9 +100,24 @@ func (s *pgSetting) metric(labels prometheus.Labels) prometheus.Metric { return prometheus.MustNewConstMetric(desc, prometheus.GaugeValue, val) } +// Removes units from any of the setting values. +// This is mostly because of a irregularity regarding AWS RDS Aurora +// https://github.com/prometheus-community/postgres_exporter/issues/619 +func (s *pgSetting) sanitizeValue() { + for _, unit := range settingUnits { + if strings.HasSuffix(s.setting, unit) { + endPos := len(s.setting) - len(unit) - 1 + s.setting = s.setting[:endPos] + return + } + } +} + // TODO: fix linter override // nolint: nakedret func (s *pgSetting) normaliseUnit() (val float64, unit string, err error) { + s.sanitizeValue() + val, err = strconv.ParseFloat(s.setting, 64) if err != nil { return val, unit, fmt.Errorf("Error converting setting %q value %q to float: %s", s.name, s.setting, err) diff --git a/cmd/postgres_exporter/pg_setting_test.go b/cmd/postgres_exporter/pg_setting_test.go index 8dd92bc56..8f8f9c058 100644 --- a/cmd/postgres_exporter/pg_setting_test.go +++ b/cmd/postgres_exporter/pg_setting_test.go @@ -11,6 +11,7 @@ // See the License for the specific language governing permissions and // limitations under the License. +//go:build !integration // +build !integration package main diff --git a/cmd/postgres_exporter/postgres_exporter.go b/cmd/postgres_exporter/postgres_exporter.go index 158048112..2574e0252 100644 --- a/cmd/postgres_exporter/postgres_exporter.go +++ b/cmd/postgres_exporter/postgres_exporter.go @@ -25,7 +25,7 @@ import ( "time" "github.com/blang/semver" - "github.com/go-kit/kit/log/level" + "github.com/go-kit/log/level" "github.com/prometheus/client_golang/prometheus" ) @@ -163,23 +163,6 @@ func dumpMaps() { } var builtinMetricMaps = map[string]intermediateMetricMap{ - "pg_stat_bgwriter": { - map[string]ColumnMapping{ - "checkpoints_timed": {COUNTER, "Number of scheduled checkpoints that have been performed", nil, nil}, - "checkpoints_req": {COUNTER, "Number of requested checkpoints that have been performed", nil, nil}, - "checkpoint_write_time": {COUNTER, "Total amount of time that has been spent in the portion of checkpoint processing where files are written to disk, in milliseconds", nil, nil}, - "checkpoint_sync_time": {COUNTER, "Total amount of time that has been spent in the portion of checkpoint processing where files are synchronized to disk, in milliseconds", nil, nil}, - "buffers_checkpoint": {COUNTER, "Number of buffers written during checkpoints", nil, nil}, - "buffers_clean": {COUNTER, "Number of buffers written by the background writer", nil, nil}, - "maxwritten_clean": {COUNTER, "Number of times the background writer stopped a cleaning scan because it had written too many buffers", nil, nil}, - "buffers_backend": {COUNTER, "Number of buffers written directly by a backend", nil, nil}, - "buffers_backend_fsync": {COUNTER, "Number of times a backend had to execute its own fsync call (normally the background writer handles those even when the backend does its own write)", nil, nil}, - "buffers_alloc": {COUNTER, "Number of buffers allocated", nil, nil}, - "stats_reset": {COUNTER, "Time at which these statistics were last reset", nil, nil}, - }, - true, - 0, - }, "pg_stat_database": { map[string]ColumnMapping{ "datid": {LABEL, "OID of a database", nil, nil}, @@ -576,14 +559,14 @@ func (e *Exporter) setupInternalMetrics() { Namespace: namespace, Subsystem: exporter, Name: "last_scrape_duration_seconds", - Help: "Duration of the last scrape of metrics from PostgresSQL.", + Help: "Duration of the last scrape of metrics from PostgreSQL.", ConstLabels: e.constantLabels, }) e.totalScrapes = prometheus.NewCounter(prometheus.CounterOpts{ Namespace: namespace, Subsystem: exporter, Name: "scrapes_total", - Help: "Total number of times PostgresSQL was scraped for metrics.", + Help: "Total number of times PostgreSQL was scraped for metrics.", ConstLabels: e.constantLabels, }) e.error = prometheus.NewGauge(prometheus.GaugeOpts{ diff --git a/cmd/postgres_exporter/postgres_exporter_integration_test.go b/cmd/postgres_exporter/postgres_exporter_integration_test.go index 5d479d7a5..7043c1e88 100644 --- a/cmd/postgres_exporter/postgres_exporter_integration_test.go +++ b/cmd/postgres_exporter/postgres_exporter_integration_test.go @@ -14,6 +14,7 @@ // These are specialized integration tests. We only build them when we're doing // a lot of additional work to keep the external docker environment they require // working. +//go:build integration // +build integration package main diff --git a/cmd/postgres_exporter/postgres_exporter_test.go b/cmd/postgres_exporter/postgres_exporter_test.go index 5747f0b07..6017756a8 100644 --- a/cmd/postgres_exporter/postgres_exporter_test.go +++ b/cmd/postgres_exporter/postgres_exporter_test.go @@ -11,6 +11,7 @@ // See the License for the specific language governing permissions and // limitations under the License. +//go:build !integration // +build !integration package main diff --git a/cmd/postgres_exporter/queries.go b/cmd/postgres_exporter/queries.go index 903e1a277..e27480f4f 100644 --- a/cmd/postgres_exporter/queries.go +++ b/cmd/postgres_exporter/queries.go @@ -18,7 +18,7 @@ import ( "fmt" "github.com/blang/semver" - "github.com/go-kit/kit/log/level" + "github.com/go-kit/log/level" "gopkg.in/yaml.v2" ) @@ -120,7 +120,7 @@ var queryOverrides = map[string][]OverrideQuery{ "pg_stat_archiver": { { - semver.MustParseRange(">=0.0.0"), + semver.MustParseRange(">=9.4.0"), ` SELECT *, extract(epoch from now() - last_archived_time) AS last_archive_age diff --git a/cmd/postgres_exporter/server.go b/cmd/postgres_exporter/server.go index cf2469cc9..8747dffa0 100644 --- a/cmd/postgres_exporter/server.go +++ b/cmd/postgres_exporter/server.go @@ -20,7 +20,7 @@ import ( "time" "github.com/blang/semver" - "github.com/go-kit/kit/log/level" + "github.com/go-kit/log/level" "github.com/prometheus/client_golang/prometheus" ) diff --git a/cmd/postgres_exporter/tests/docker-postgres-replication/docker-compose.yml b/cmd/postgres_exporter/tests/docker-postgres-replication/docker-compose.yml index 81a66da10..3ea59a85b 100644 --- a/cmd/postgres_exporter/tests/docker-postgres-replication/docker-compose.yml +++ b/cmd/postgres_exporter/tests/docker-postgres-replication/docker-compose.yml @@ -1,4 +1,4 @@ - +--- version: '2' services: @@ -11,9 +11,9 @@ services: POSTGRES_PASSWORD: 'postgres' PGDATA: '/var/lib/postgresql/data/pgdata' volumes: - - '/var/lib/postgresql/data' + - '/var/lib/postgresql/data' expose: - - '5432' + - '5432' pg-slave: build: '.' @@ -25,8 +25,8 @@ services: PGDATA: '/var/lib/postgresql/data/pgdata' REPLICATE_FROM: 'pg-master' volumes: - - '/var/lib/postgresql/data' + - '/var/lib/postgresql/data' expose: - - '5432' + - '5432' links: - - 'pg-master' + - 'pg-master' diff --git a/cmd/postgres_exporter/util.go b/cmd/postgres_exporter/util.go index b8ddfe080..3a125f1d3 100644 --- a/cmd/postgres_exporter/util.go +++ b/cmd/postgres_exporter/util.go @@ -21,7 +21,7 @@ import ( "strings" "time" - "github.com/go-kit/kit/log/level" + "github.com/go-kit/log/level" "github.com/lib/pq" ) diff --git a/collector/collector.go b/collector/collector.go new file mode 100644 index 000000000..58765b659 --- /dev/null +++ b/collector/collector.go @@ -0,0 +1,224 @@ +// Copyright 2022 The Prometheus Authors +// Licensed 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. + +package collector + +import ( + "context" + "errors" + "fmt" + "sync" + "time" + + "github.com/go-kit/log" + "github.com/go-kit/log/level" + "github.com/prometheus/client_golang/prometheus" + "gopkg.in/alecthomas/kingpin.v2" +) + +var ( + factories = make(map[string]func(logger log.Logger) (Collector, error)) + initiatedCollectorsMtx = sync.Mutex{} + initiatedCollectors = make(map[string]Collector) + collectorState = make(map[string]*bool) + forcedCollectors = map[string]bool{} // collectors which have been explicitly enabled or disabled +) + +const ( + // Namespace for all metrics. + namespace = "pg" + + defaultEnabled = true + // defaultDisabled = false +) + +var ( + scrapeDurationDesc = prometheus.NewDesc( + prometheus.BuildFQName(namespace, "scrape", "collector_duration_seconds"), + "postgres_exporter: Duration of a collector scrape.", + []string{"collector"}, + nil, + ) + scrapeSuccessDesc = prometheus.NewDesc( + prometheus.BuildFQName(namespace, "scrape", "collector_success"), + "postgres_exporter: Whether a collector succeeded.", + []string{"collector"}, + nil, + ) +) + +type Collector interface { + Update(ctx context.Context, server *server, ch chan<- prometheus.Metric) error +} + +func registerCollector(name string, isDefaultEnabled bool, createFunc func(logger log.Logger) (Collector, error)) { + var helpDefaultState string + if isDefaultEnabled { + helpDefaultState = "enabled" + } else { + helpDefaultState = "disabled" + } + + // Create flag for this collector + flagName := fmt.Sprintf("collector.%s", name) + flagHelp := fmt.Sprintf("Enable the %s collector (default: %s).", name, helpDefaultState) + defaultValue := fmt.Sprintf("%v", isDefaultEnabled) + + flag := kingpin.Flag(flagName, flagHelp).Default(defaultValue).Action(collectorFlagAction(name)).Bool() + collectorState[name] = flag + + // Register the create function for this collector + factories[name] = createFunc +} + +// PostgresCollector implements the prometheus.Collector interface. +type PostgresCollector struct { + Collectors map[string]Collector + logger log.Logger + + servers map[string]*server +} + +type Option func(*PostgresCollector) error + +// NewPostgresCollector creates a new PostgresCollector. +func NewPostgresCollector(logger log.Logger, dsns []string, filters []string, options ...Option) (*PostgresCollector, error) { + p := &PostgresCollector{ + logger: logger, + } + // Apply options to customize the collector + for _, o := range options { + err := o(p) + if err != nil { + return nil, err + } + } + + f := make(map[string]bool) + for _, filter := range filters { + enabled, exist := collectorState[filter] + if !exist { + return nil, fmt.Errorf("missing collector: %s", filter) + } + if !*enabled { + return nil, fmt.Errorf("disabled collector: %s", filter) + } + f[filter] = true + } + collectors := make(map[string]Collector) + initiatedCollectorsMtx.Lock() + defer initiatedCollectorsMtx.Unlock() + for key, enabled := range collectorState { + if !*enabled || (len(f) > 0 && !f[key]) { + continue + } + if collector, ok := initiatedCollectors[key]; ok { + collectors[key] = collector + } else { + collector, err := factories[key](log.With(logger, "collector", key)) + if err != nil { + return nil, err + } + collectors[key] = collector + initiatedCollectors[key] = collector + } + } + + p.Collectors = collectors + + servers := make(map[string]*server) + for _, dsn := range dsns { + s, err := makeServer(dsn) + if err != nil { + return nil, err + } + + servers[dsn] = s + } + + p.servers = servers + + return p, nil +} + +// Describe implements the prometheus.Collector interface. +func (p PostgresCollector) Describe(ch chan<- *prometheus.Desc) { + ch <- scrapeDurationDesc + ch <- scrapeSuccessDesc +} + +// Collect implements the prometheus.Collector interface. +func (p PostgresCollector) Collect(ch chan<- prometheus.Metric) { + ctx := context.TODO() + wg := sync.WaitGroup{} + wg.Add(len(p.servers)) + for _, s := range p.servers { + go func(s *server) { + p.subCollect(ctx, s, ch) + wg.Done() + }(s) + } + wg.Wait() +} + +func (p PostgresCollector) subCollect(ctx context.Context, server *server, ch chan<- prometheus.Metric) { + wg := sync.WaitGroup{} + wg.Add(len(p.Collectors)) + for name, c := range p.Collectors { + go func(name string, c Collector) { + execute(ctx, name, c, server, ch, p.logger) + wg.Done() + }(name, c) + } + wg.Wait() +} + +func execute(ctx context.Context, name string, c Collector, s *server, ch chan<- prometheus.Metric, logger log.Logger) { + begin := time.Now() + err := c.Update(ctx, s, ch) + duration := time.Since(begin) + var success float64 + + if err != nil { + if IsNoDataError(err) { + level.Debug(logger).Log("msg", "collector returned no data", "name", name, "duration_seconds", duration.Seconds(), "err", err) + } else { + level.Error(logger).Log("msg", "collector failed", "name", name, "duration_seconds", duration.Seconds(), "err", err) + } + success = 0 + } else { + level.Debug(logger).Log("msg", "collector succeeded", "name", name, "duration_seconds", duration.Seconds()) + success = 1 + } + ch <- prometheus.MustNewConstMetric(scrapeDurationDesc, prometheus.GaugeValue, duration.Seconds(), name) + ch <- prometheus.MustNewConstMetric(scrapeSuccessDesc, prometheus.GaugeValue, success, name) +} + +// collectorFlagAction generates a new action function for the given collector +// to track whether it has been explicitly enabled or disabled from the command line. +// A new action function is needed for each collector flag because the ParseContext +// does not contain information about which flag called the action. +// See: https://github.com/alecthomas/kingpin/issues/294 +func collectorFlagAction(collector string) func(ctx *kingpin.ParseContext) error { + return func(ctx *kingpin.ParseContext) error { + forcedCollectors[collector] = true + return nil + } +} + +// ErrNoData indicates the collector found no data to collect, but had no other error. +var ErrNoData = errors.New("collector returned no data") + +func IsNoDataError(err error) bool { + return err == ErrNoData +} diff --git a/collector/pg_database.go b/collector/pg_database.go new file mode 100644 index 000000000..5868f66d8 --- /dev/null +++ b/collector/pg_database.go @@ -0,0 +1,73 @@ +// Copyright 2022 The Prometheus Authors +// Licensed 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. + +package collector + +import ( + "context" + + "github.com/go-kit/log" + "github.com/prometheus/client_golang/prometheus" +) + +func init() { + registerCollector("database", defaultEnabled, NewPGDatabaseCollector) +} + +type PGDatabaseCollector struct { + log log.Logger +} + +func NewPGDatabaseCollector(logger log.Logger) (Collector, error) { + return &PGDatabaseCollector{log: logger}, nil +} + +var pgDatabase = map[string]*prometheus.Desc{ + "size_bytes": prometheus.NewDesc( + "pg_database_size_bytes", + "Disk space used by the database", + []string{"datname", "server"}, nil, + ), +} + +func (PGDatabaseCollector) Update(ctx context.Context, server *server, ch chan<- prometheus.Metric) error { + db, err := server.GetDB() + if err != nil { + return err + } + rows, err := db.QueryContext(ctx, + `SELECT pg_database.datname + ,pg_database_size(pg_database.datname) + FROM pg_database;`) + if err != nil { + return err + } + defer rows.Close() + + for rows.Next() { + var datname string + var size int64 + if err := rows.Scan(&datname, &size); err != nil { + return err + } + + ch <- prometheus.MustNewConstMetric( + pgDatabase["size_bytes"], + prometheus.GaugeValue, float64(size), datname, server.GetName(), + ) + } + if err := rows.Err(); err != nil { + return err + } + return nil +} diff --git a/collector/pg_stat_bgwriter.go b/collector/pg_stat_bgwriter.go new file mode 100644 index 000000000..7e7d09c72 --- /dev/null +++ b/collector/pg_stat_bgwriter.go @@ -0,0 +1,212 @@ +// Copyright 2021 The Prometheus Authors +// Licensed 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. + +package collector + +import ( + "context" + "time" + + "github.com/go-kit/log" + "github.com/prometheus/client_golang/prometheus" +) + +func init() { + registerCollector("bgwriter", defaultEnabled, NewPGStatBGWriterCollector) +} + +type PGStatBGWriterCollector struct { +} + +func NewPGStatBGWriterCollector(logger log.Logger) (Collector, error) { + return &PGStatBGWriterCollector{}, nil +} + +const bgWriterSubsystem = "stat_bgwriter" + +var statBGWriter = map[string]*prometheus.Desc{ + "checkpoints_timed": prometheus.NewDesc( + prometheus.BuildFQName(namespace, bgWriterSubsystem, "checkpoints_timed_total"), + "Number of scheduled checkpoints that have been performed", + []string{"server"}, + prometheus.Labels{}, + ), + "checkpoints_req": prometheus.NewDesc( + prometheus.BuildFQName(namespace, bgWriterSubsystem, "checkpoints_req_total"), + "Number of requested checkpoints that have been performed", + []string{"server"}, + prometheus.Labels{}, + ), + "checkpoint_write_time": prometheus.NewDesc( + prometheus.BuildFQName(namespace, bgWriterSubsystem, "checkpoint_write_time_total"), + "Total amount of time that has been spent in the portion of checkpoint processing where files are written to disk, in milliseconds", + []string{"server"}, + prometheus.Labels{}, + ), + "checkpoint_sync_time": prometheus.NewDesc( + prometheus.BuildFQName(namespace, bgWriterSubsystem, "checkpoint_sync_time_total"), + "Total amount of time that has been spent in the portion of checkpoint processing where files are synchronized to disk, in milliseconds", + []string{"server"}, + prometheus.Labels{}, + ), + "buffers_checkpoint": prometheus.NewDesc( + prometheus.BuildFQName(namespace, bgWriterSubsystem, "buffers_checkpoint_total"), + "Number of buffers written during checkpoints", + []string{"server"}, + prometheus.Labels{}, + ), + "buffers_clean": prometheus.NewDesc( + prometheus.BuildFQName(namespace, bgWriterSubsystem, "buffers_clean_total"), + "Number of buffers written by the background writer", + []string{"server"}, + prometheus.Labels{}, + ), + "maxwritten_clean": prometheus.NewDesc( + prometheus.BuildFQName(namespace, bgWriterSubsystem, "maxwritten_clean_total"), + "Number of times the background writer stopped a cleaning scan because it had written too many buffers", + []string{"server"}, + prometheus.Labels{}, + ), + "buffers_backend": prometheus.NewDesc( + prometheus.BuildFQName(namespace, bgWriterSubsystem, "buffers_backend_total"), + "Number of buffers written directly by a backend", + []string{"server"}, + prometheus.Labels{}, + ), + "buffers_backend_fsync": prometheus.NewDesc( + prometheus.BuildFQName(namespace, bgWriterSubsystem, "buffers_backend_fsync_total"), + "Number of times a backend had to execute its own fsync call (normally the background writer handles those even when the backend does its own write)", + []string{"server"}, + prometheus.Labels{}, + ), + "buffers_alloc": prometheus.NewDesc( + prometheus.BuildFQName(namespace, bgWriterSubsystem, "buffers_alloc_total"), + "Number of buffers allocated", + []string{"server"}, + prometheus.Labels{}, + ), + "stats_reset": prometheus.NewDesc( + prometheus.BuildFQName(namespace, bgWriterSubsystem, "stats_reset_total"), + "Time at which these statistics were last reset", + []string{"server"}, + prometheus.Labels{}, + ), +} + +func (PGStatBGWriterCollector) Update(ctx context.Context, server *server, ch chan<- prometheus.Metric) error { + db, err := server.GetDB() + if err != nil { + return err + } + + row := db.QueryRowContext(ctx, + `SELECT + checkpoints_timed + ,checkpoints_req + ,checkpoint_write_time + ,checkpoint_sync_time + ,buffers_checkpoint + ,buffers_clean + ,maxwritten_clean + ,buffers_backend + ,buffers_backend_fsync + ,buffers_alloc + ,stats_reset + FROM pg_stat_bgwriter;`) + + var cpt int + var cpr int + var cpwt int + var cpst int + var bcp int + var bc int + var mwc int + var bb int + var bbf int + var ba int + var sr time.Time + + err = row.Scan(&cpt, &cpr, &cpwt, &cpst, &bcp, &bc, &mwc, &bb, &bbf, &ba, &sr) + if err != nil { + return err + } + + ch <- prometheus.MustNewConstMetric( + statBGWriter["checkpoints_timed"], + prometheus.CounterValue, + float64(cpt), + server.GetName(), + ) + ch <- prometheus.MustNewConstMetric( + statBGWriter["checkpoints_req"], + prometheus.CounterValue, + float64(cpr), + server.GetName(), + ) + ch <- prometheus.MustNewConstMetric( + statBGWriter["checkpoint_write_time"], + prometheus.CounterValue, + float64(cpwt), + server.GetName(), + ) + ch <- prometheus.MustNewConstMetric( + statBGWriter["checkpoint_sync_time"], + prometheus.CounterValue, + float64(cpst), + server.GetName(), + ) + ch <- prometheus.MustNewConstMetric( + statBGWriter["buffers_checkpoint"], + prometheus.CounterValue, + float64(bcp), + server.GetName(), + ) + ch <- prometheus.MustNewConstMetric( + statBGWriter["buffers_clean"], + prometheus.CounterValue, + float64(bc), + server.GetName(), + ) + ch <- prometheus.MustNewConstMetric( + statBGWriter["maxwritten_clean"], + prometheus.CounterValue, + float64(mwc), + server.GetName(), + ) + ch <- prometheus.MustNewConstMetric( + statBGWriter["buffers_backend"], + prometheus.CounterValue, + float64(bb), + server.GetName(), + ) + ch <- prometheus.MustNewConstMetric( + statBGWriter["buffers_backend_fsync"], + prometheus.CounterValue, + float64(bbf), + server.GetName(), + ) + ch <- prometheus.MustNewConstMetric( + statBGWriter["buffers_alloc"], + prometheus.CounterValue, + float64(ba), + server.GetName(), + ) + ch <- prometheus.MustNewConstMetric( + statBGWriter["stats_reset"], + prometheus.CounterValue, + float64(sr.Unix()), + server.GetName(), + ) + + return nil +} diff --git a/collector/server.go b/collector/server.go new file mode 100644 index 000000000..fa490a2c6 --- /dev/null +++ b/collector/server.go @@ -0,0 +1,100 @@ +// Copyright 2022 The Prometheus Authors +// Licensed 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. + +package collector + +import ( + "database/sql" + "fmt" + "strings" + + "github.com/lib/pq" +) + +type server struct { + dsn string + name string + db *sql.DB +} + +func makeServer(dsn string) (*server, error) { + name, err := parseServerName(dsn) + if err != nil { + return nil, err + } + return &server{ + dsn: dsn, + name: name, + }, nil +} + +func (s *server) GetDB() (*sql.DB, error) { + if s.db != nil { + return s.db, nil + } + + db, err := sql.Open("postgres", s.dsn) + if err != nil { + return nil, err + } + db.SetMaxOpenConns(1) + db.SetMaxIdleConns(1) + + s.db = db + + return s.db, nil +} + +func (s *server) GetName() string { + return s.name +} + +func (s *server) String() string { + return s.name +} + +func parseServerName(url string) (string, error) { + dsn, err := pq.ParseURL(url) + if err != nil { + dsn = url + } + + pairs := strings.Split(dsn, " ") + kv := make(map[string]string, len(pairs)) + for _, pair := range pairs { + splitted := strings.SplitN(pair, "=", 2) + if len(splitted) != 2 { + return "", fmt.Errorf("malformed dsn %q", dsn) + } + // Newer versions of pq.ParseURL quote values so trim them off if they exist + key := strings.Trim(splitted[0], "'\"") + value := strings.Trim(splitted[1], "'\"") + kv[key] = value + } + + var fingerprint string + + if host, ok := kv["host"]; ok { + fingerprint += host + } else { + fingerprint += "localhost" + } + + if port, ok := kv["port"]; ok { + fingerprint += ":" + port + } else { + fingerprint += ":5432" + } + + return fingerprint, nil +} diff --git a/go.mod b/go.mod index 4012c360a..c2505f7fe 100644 --- a/go.mod +++ b/go.mod @@ -1,16 +1,39 @@ module github.com/prometheus-community/postgres_exporter -go 1.14 +go 1.17 require ( github.com/blang/semver v3.5.1+incompatible - github.com/go-kit/kit v0.11.0 - github.com/lib/pq v1.10.1 - github.com/prometheus/client_golang v1.11.0 + github.com/go-kit/log v0.2.1 + github.com/lib/pq v1.10.6 + github.com/prometheus/client_golang v1.12.2 github.com/prometheus/client_model v0.2.0 - github.com/prometheus/common v0.29.0 - github.com/prometheus/exporter-toolkit v0.6.0 + github.com/prometheus/common v0.34.0 + github.com/prometheus/exporter-toolkit v0.7.1 gopkg.in/alecthomas/kingpin.v2 v2.2.6 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c gopkg.in/yaml.v2 v2.4.0 ) + +require ( + github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 // indirect + github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d // indirect + github.com/beorn7/perks v1.0.1 // indirect + github.com/cespare/xxhash/v2 v2.1.2 // indirect + github.com/go-logfmt/logfmt v0.5.1 // indirect + github.com/golang/protobuf v1.5.2 // indirect + github.com/jpillora/backoff v1.0.0 // indirect + github.com/kr/pretty v0.2.1 // indirect + github.com/kr/text v0.1.0 // indirect + github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect + github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f // indirect + github.com/pkg/errors v0.9.1 // indirect + github.com/prometheus/procfs v0.7.3 // indirect + golang.org/x/crypto v0.0.0-20210616213533-5ff15b29337e // indirect + golang.org/x/net v0.0.0-20220225172249-27dd8689420f // indirect + golang.org/x/oauth2 v0.0.0-20220223155221-ee480838109b // indirect + golang.org/x/sys v0.0.0-20220114195835-da31bd327af9 // indirect + golang.org/x/text v0.3.7 // indirect + google.golang.org/appengine v1.6.6 // indirect + google.golang.org/protobuf v1.26.0 // indirect +) diff --git a/go.sum b/go.sum index 3e9df6e05..8bc754b16 100644 --- a/go.sum +++ b/go.sum @@ -33,11 +33,6 @@ cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU= github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo= -github.com/Knetic/govaluate v3.0.1-0.20171022003610-9aa49832a739+incompatible/go.mod h1:r7JcOSlj0wfOMncg0iLm8Leh48TZaKVeNIfJntJ2wa0= -github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWXgklEdEo= -github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI= -github.com/VividCortex/gohistogram v1.0.0/go.mod h1:Pf5mBqqDxYaXu3hDrrU+w6nw50o/4+TcAqDqk/vUH7g= -github.com/afex/hystrix-go v0.0.0-20180502004556-fa1af6a1f4f5/go.mod h1:SkGFH1ia65gfNATL8TAiHDNxPzPdmEL5uirI2Uyuz6c= github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc= github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 h1:JYp7IbQjafoB+tBA3gMyHYHrpOtNuDiK/uB5uXxq5wM= github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc= @@ -45,76 +40,44 @@ github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRF github.com/alecthomas/units 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h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= -golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= golang.org/x/sys v0.0.0-20190312061237-fead79001313/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= @@ -457,18 +317,12 @@ golang.org/x/sys v0.0.0-20190507160741-ecd444e8653b/go.mod h1:h1NjWce9XRLGQEsW7w golang.org/x/sys v0.0.0-20190606165138-5da285871e9c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys v0.0.0-20190624142023-c5567b49c5d0/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys v0.0.0-20190726091711-fc99dfbffb4e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= -golang.org/x/sys v0.0.0-20190922100055-0a153f010e69/go.mod 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golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY= golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs= golang.org/x/tools v0.0.0-20190312151545-0bb0c0a6e846/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs= golang.org/x/tools v0.0.0-20190312170243-e65039ee4138/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs= -golang.org/x/tools v0.0.0-20190328211700-ab21143f2384/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs= golang.org/x/tools v0.0.0-20190425150028-36563e24a262/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q= golang.org/x/tools v0.0.0-20190506145303-2d16b83fe98c/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q= golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q= @@ -519,7 +370,6 @@ golang.org/x/tools v0.0.0-20190606124116-d0a3d012864b/go.mod h1:/rFqwRUd4F7ZHNgw golang.org/x/tools v0.0.0-20190621195816-6e04913cbbac/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc= golang.org/x/tools v0.0.0-20190628153133-6cdbf07be9d0/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc= golang.org/x/tools v0.0.0-20190816200558-6889da9d5479/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo= -golang.org/x/tools v0.0.0-20190907020128-2ca718005c18/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo= golang.org/x/tools v0.0.0-20190911174233-4f2ddba30aff/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo= golang.org/x/tools v0.0.0-20191012152004-8de300cfc20a/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo= golang.org/x/tools v0.0.0-20191113191852-77e3bb0ad9e7/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo= @@ -544,12 +394,9 @@ golang.org/x/tools v0.0.0-20200501065659-ab2804fb9c9d/go.mod h1:EkVYQZoAsY45+roY golang.org/x/tools v0.0.0-20200512131952-2bc93b1c0c88/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE= golang.org/x/tools v0.0.0-20200515010526-7d3b6ebf133d/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE= golang.org/x/tools v0.0.0-20200618134242-20370b0cb4b2/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE= -golang.org/x/tools v0.0.0-20200619180055-7c47624df98f/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE= golang.org/x/tools v0.0.0-20200729194436-6467de6f59a7/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA= golang.org/x/tools v0.0.0-20200804011535-6c149bb5ef0d/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA= golang.org/x/tools v0.0.0-20200825202427-b303f430e36d/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA= -golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA= -golang.org/x/tools v0.1.2/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk= golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= @@ -601,14 +448,12 @@ google.golang.org/genproto v0.0.0-20200312145019-da6875a35672/go.mod h1:55QSHmfG google.golang.org/genproto v0.0.0-20200331122359-1ee6d9798940/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c= google.golang.org/genproto v0.0.0-20200430143042-b979b6f78d84/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c= google.golang.org/genproto v0.0.0-20200511104702-f5ebc3bea380/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c= -google.golang.org/genproto v0.0.0-20200513103714-09dca8ec2884/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c= google.golang.org/genproto v0.0.0-20200515170657-fc4c6c6a6587/go.mod h1:YsZOwe1myG/8QRHRsmBRE1LrgQY60beZKjly0O1fX9U= google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo= google.golang.org/genproto v0.0.0-20200618031413-b414f8b61790/go.mod h1:jDfRM7FcilCzHH/e9qn6dsT145K34l5v+OpcnNgKAAA= google.golang.org/genproto v0.0.0-20200729003335-053ba62fc06f/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no= google.golang.org/genproto v0.0.0-20200804131852-c06518451d9c/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no= google.golang.org/genproto v0.0.0-20200825200019-8632dd797987/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no= -google.golang.org/genproto v0.0.0-20210602131652-f16073e35f0c/go.mod h1:UODoCrxHCcBojKKwX1terBiRUaqAsFqJiF615XL43r0= google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c= google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38= google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM= @@ -621,9 +466,6 @@ google.golang.org/grpc v1.28.0/go.mod h1:rpkK4SK4GF4Ach/+MFLZUBavHOvF2JJB5uozKKa google.golang.org/grpc v1.29.1/go.mod h1:itym6AZVZYACWQqET3MqgPpjcuV5QH3BxFS3IjizoKk= google.golang.org/grpc v1.30.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak= google.golang.org/grpc v1.31.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak= -google.golang.org/grpc v1.33.1/go.mod h1:fr5YgcSWrqhRRxogOsw7RzIpsmvOZ6IcH4kBYTpR3n0= -google.golang.org/grpc v1.33.2/go.mod h1:JMHMWHQWaTccqQQlmk3MJZS+GWXOdAesneDmEnv2fbc= -google.golang.org/grpc v1.38.0/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM= google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8= google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0= google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM= @@ -635,9 +477,8 @@ google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpAD google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGjtUeSXeh4= google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c= google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw= +google.golang.org/protobuf v1.26.0 h1:bxAC2xTBsZGibn2RTntX0oH50xLsqy1OxA9tTL3p/lk= google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc= -google.golang.org/protobuf v1.27.1 h1:SnqbnDw1V7RiZcXPx5MEeqPv2s79L9i7BJUlG/+RurQ= -google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc= gopkg.in/alecthomas/kingpin.v2 v2.2.6 h1:jMFz6MfLP0/4fUyZle81rXUoxOBFi19VUFKVDOQfozc= gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw= gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= @@ -646,22 +487,13 @@ gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk= gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q= gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI= -gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys= -gopkg.in/gcfg.v1 v1.2.3/go.mod h1:yesOnuUOFQAhST5vPY4nbZsb/huCgGGXlipJsBn0b3o= -gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw= -gopkg.in/warnings.v0 v0.1.2/go.mod h1:jksf8JmL6Qr/oQM2OXTHunEvvTAsrWBLb6OOjuVWRNI= gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= -gopkg.in/yaml.v2 v2.2.3/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= -gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY= gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ= -gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= -gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo= -gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= @@ -672,4 +504,3 @@ honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9 rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8= rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0= rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA= -sigs.k8s.io/yaml v1.2.0/go.mod h1:yfXDCHCao9+ENCvLSE62v9VSji2MKu5jeNfTrofGhJc= diff --git a/postgres_exporter.rc b/postgres_exporter.rc index 2dd4a6025..d7c554689 100644 --- a/postgres_exporter.rc +++ b/postgres_exporter.rc @@ -4,7 +4,7 @@ # REQUIRE: LOGIN # KEYWORD: shutdown # -# rc-script for postgres_exporter +# rc-script for postgres_exporter # # # Add the following lines to /etc/rc.conf.local or /etc/rc.conf @@ -29,23 +29,8 @@ # postgres_exporter_pg_port (string): Set the Postgres database port # Defaults to "5432" -# Add extra arguments via "postgres_exporter_args" which could be choosen from: +# Add extra arguments via "postgres_exporter_args" # (see $ postgres_exporter --help) -# -# -dumpmaps -# Do not run, simply dump the maps. -# -extend.query-path string -# Path to custom queries to run. -# -log.level value -# Only log messages with the given severity or above. Valid levels: [debug, info, warn, error, fatal]. -# -version -# print version and exit -# -web.telemetry-path string -# Path under which to expose metrics. (default "/metrics") -# -log.format value -# If set use a syslog logger or JSON logging. Example: logger:syslog?appname=bob&local=7 or logger:stdout?json=true. Defaults to stderr. -# -extend.query-path string -# Path to custom queries to run. . /etc/rc.subr @@ -72,7 +57,7 @@ pidfile=/var/run/postgres_exporter.pid command="/usr/sbin/daemon" procname="/usr/local/bin/postgres_exporter" command_args="-p ${pidfile} /usr/bin/env DATA_SOURCE_NAME="${postgres_exporter_data_source_name}" ${procname} \ - -web.listen-address=${postgres_exporter_listen_address} \ + --web.listen-address=${postgres_exporter_listen_address} \ ${postgres_exporter_args}" start_precmd=postgres_exporter_startprecmd @@ -86,4 +71,3 @@ postgres_exporter_startprecmd() load_rc_config $name run_rc_command "$1" - diff --git a/postgres_mixin/alerts/alerts.libsonnet b/postgres_mixin/alerts/alerts.libsonnet new file mode 100644 index 000000000..7f70d8a8d --- /dev/null +++ b/postgres_mixin/alerts/alerts.libsonnet @@ -0,0 +1 @@ +(import 'postgres.libsonnet') diff --git a/postgres_mixin/alerts/alerts.yaml b/postgres_mixin/alerts/alerts.yaml deleted file mode 100644 index ff3d75a7f..000000000 --- a/postgres_mixin/alerts/alerts.yaml +++ /dev/null @@ -1,57 +0,0 @@ ---- -groups: - - name: PostgreSQL - rules: - - alert: PostgreSQLMaxConnectionsReached - expr: sum(pg_stat_activity_count) by (instance) >= sum(pg_settings_max_connections) by (instance) - sum(pg_settings_superuser_reserved_connections) by (instance) - for: 1m - labels: - severity: email - annotations: - summary: "{{ $labels.instance }} has maxed out Postgres connections." - description: "{{ $labels.instance }} is exceeding the currently configured maximum Postgres connection limit (current value: {{ $value }}s). Services may be degraded - please take immediate action (you probably need to increase max_connections in the Docker image and re-deploy." - - - alert: PostgreSQLHighConnections - expr: sum(pg_stat_activity_count) by (instance) > (sum(pg_settings_max_connections) by (instance) - sum(pg_settings_superuser_reserved_connections) by (instance)) * 0.8 - for: 10m - labels: - severity: email - annotations: - summary: "{{ $labels.instance }} is over 80% of max Postgres connections." - description: "{{ $labels.instance }} is exceeding 80% of the currently configured maximum Postgres connection limit (current value: {{ $value }}s). Please check utilization graphs and confirm if this is normal service growth, abuse or an otherwise temporary condition or if new resources need to be provisioned (or the limits increased, which is mostly likely)." - - - alert: PostgreSQLDown - expr: pg_up != 1 - for: 1m - labels: - severity: email - annotations: - summary: "PostgreSQL is not processing queries: {{ $labels.instance }}" - description: "{{ $labels.instance }} is rejecting query requests from the exporter, and thus probably not allowing DNS requests to work either. User services should not be effected provided at least 1 node is still alive." - - - alert: PostgreSQLSlowQueries - expr: avg(rate(pg_stat_activity_max_tx_duration{datname!~"template.*"}[2m])) by (datname) > 2 * 60 - for: 2m - labels: - severity: email - annotations: - summary: "PostgreSQL high number of slow on {{ $labels.cluster }} for database {{ $labels.datname }} " - description: "PostgreSQL high number of slow queries {{ $labels.cluster }} for database {{ $labels.datname }} with a value of {{ $value }} " - - - alert: PostgreSQLQPS - expr: avg(irate(pg_stat_database_xact_commit{datname!~"template.*"}[5m]) + irate(pg_stat_database_xact_rollback{datname!~"template.*"}[5m])) by (datname) > 10000 - for: 5m - labels: - severity: email - annotations: - summary: "PostgreSQL high number of queries per second {{ $labels.cluster }} for database {{ $labels.datname }}" - description: "PostgreSQL high number of queries per second on {{ $labels.cluster }} for database {{ $labels.datname }} with a value of {{ $value }}" - - - alert: PostgreSQLCacheHitRatio - expr: avg(rate(pg_stat_database_blks_hit{datname!~"template.*"}[5m]) / (rate(pg_stat_database_blks_hit{datname!~"template.*"}[5m]) + rate(pg_stat_database_blks_read{datname!~"template.*"}[5m]))) by (datname) < 0.98 - for: 5m - labels: - severity: email - annotations: - summary: "PostgreSQL low cache hit rate on {{ $labels.cluster }} for database {{ $labels.datname }}" - description: "PostgreSQL low on cache hit rate on {{ $labels.cluster }} for database {{ $labels.datname }} with a value of {{ $value }}" diff --git a/postgres_mixin/alerts/postgres.libsonnet b/postgres_mixin/alerts/postgres.libsonnet new file mode 100644 index 000000000..4b0275df1 --- /dev/null +++ b/postgres_mixin/alerts/postgres.libsonnet @@ -0,0 +1,127 @@ +{ + prometheusAlerts+:: { + groups+: [ + { + name: 'PostgreSQL', + rules: [ + { + alert: 'PostgreSQLMaxConnectionsReached', + annotations: { + description: '{{ $labels.instance }} is exceeding the currently configured maximum Postgres connection limit (current value: {{ $value }}s). Services may be degraded - please take immediate action (you probably need to increase max_connections in the Docker image and re-deploy.', + summary: '{{ $labels.instance }} has maxed out Postgres connections.', + }, + expr: ||| + sum by (instance) (pg_stat_activity_count{%(postgresExporterSelector)s}) + >= + sum by (instance) (pg_settings_max_connections{%(postgresExporterSelector)s}) + - + sum by (instance) (pg_settings_superuser_reserved_connections{%(postgresExporterSelector)s}) + ||| % $._config, + 'for': '1m', + labels: { + severity: 'warning', + }, + }, + { + alert: 'PostgreSQLHighConnections', + annotations: { + description: '{{ $labels.instance }} is exceeding 80% of the currently configured maximum Postgres connection limit (current value: {{ $value }}s). Please check utilization graphs and confirm if this is normal service growth, abuse or an otherwise temporary condition or if new resources need to be provisioned (or the limits increased, which is mostly likely).', + summary: '{{ $labels.instance }} is over 80% of max Postgres connections.', + }, + expr: ||| + sum by (instance) (pg_stat_activity_count{%(postgresExporterSelector)s}) + > + ( + sum by (instance) (pg_settings_max_connections{%(postgresExporterSelector)s}) + - + sum by (instance) (pg_settings_superuser_reserved_connections{%(postgresExporterSelector)s}) + ) * 0.8 + ||| % $._config, + 'for': '10m', + labels: { + severity: 'warning', + }, + }, + { + alert: 'PostgreSQLDown', + annotations: { + description: '{{ $labels.instance }} is rejecting query requests from the exporter, and thus probably not allowing DNS requests to work either. User services should not be effected provided at least 1 node is still alive.', + summary: 'PostgreSQL is not processing queries: {{ $labels.instance }}', + }, + expr: 'pg_up{%(postgresExporterSelector)s} != 1' % $._config, + 'for': '1m', + labels: { + severity: 'warning', + }, + }, + { + alert: 'PostgreSQLSlowQueries', + annotations: { + description: 'PostgreSQL high number of slow queries {{ $labels.cluster }} for database {{ $labels.datname }} with a value of {{ $value }} ', + summary: 'PostgreSQL high number of slow on {{ $labels.cluster }} for database {{ $labels.datname }} ', + }, + expr: ||| + avg by (datname) ( + rate ( + pg_stat_activity_max_tx_duration{datname!~"template.*",%(postgresExporterSelector)s}[2m] + ) + ) > 2 * 60 + ||| % $._config, + 'for': '2m', + labels: { + severity: 'warning', + }, + }, + { + alert: 'PostgreSQLQPS', + annotations: { + description: 'PostgreSQL high number of queries per second on {{ $labels.cluster }} for database {{ $labels.datname }} with a value of {{ $value }}', + summary: 'PostgreSQL high number of queries per second {{ $labels.cluster }} for database {{ $labels.datname }}', + }, + expr: ||| + avg by (datname) ( + irate( + pg_stat_database_xact_commit{datname!~"template.*",%(postgresExporterSelector)s}[5m] + ) + + + irate( + pg_stat_database_xact_rollback{datname!~"template.*",%(postgresExporterSelector)s}[5m] + ) + ) > 10000 + ||| % $._config, + 'for': '5m', + labels: { + severity: 'warning', + }, + }, + { + alert: 'PostgreSQLCacheHitRatio', + annotations: { + description: 'PostgreSQL low on cache hit rate on {{ $labels.cluster }} for database {{ $labels.datname }} with a value of {{ $value }}', + summary: 'PostgreSQL low cache hit rate on {{ $labels.cluster }} for database {{ $labels.datname }}', + }, + expr: ||| + avg by (datname) ( + rate(pg_stat_database_blks_hit{datname!~"template.*",%(postgresExporterSelector)s}[5m]) + / + ( + rate( + pg_stat_database_blks_hit{datname!~"template.*",%(postgresExporterSelector)s}[5m] + ) + + + rate( + pg_stat_database_blks_read{datname!~"template.*",%(postgresExporterSelector)s}[5m] + ) + ) + ) < 0.98 + ||| % $._config, + 'for': '5m', + labels: { + severity: 'warning', + }, + }, + ], + }, + ], + }, +} diff --git a/postgres_mixin/config.libsonnet b/postgres_mixin/config.libsonnet new file mode 100644 index 000000000..d7bd7ac1b --- /dev/null +++ b/postgres_mixin/config.libsonnet @@ -0,0 +1,5 @@ +{ + _config+:: { + postgresExporterSelector: '', + }, +} diff --git a/postgres_mixin/dashboards/dashboards.libsonnet b/postgres_mixin/dashboards/dashboards.libsonnet new file mode 100644 index 000000000..d55f1ef5c --- /dev/null +++ b/postgres_mixin/dashboards/dashboards.libsonnet @@ -0,0 +1,5 @@ +{ + grafanaDashboards+:: { + 'postgres-overview.json': (import 'postgres-overview.json'), + }, +} diff --git a/postgres_mixin/dashboards/postgres-overview.json b/postgres_mixin/dashboards/postgres-overview.json index 24b7bc92d..5bea49262 100644 --- a/postgres_mixin/dashboards/postgres-overview.json +++ b/postgres_mixin/dashboards/postgres-overview.json @@ -584,7 +584,7 @@ { "alias": "Buffers Allocated", "dsType": "prometheus", - "expr": "irate(pg_stat_bgwriter_buffers_alloc{instance='$instance'}[5m])", + "expr": "irate(pg_stat_bgwriter_buffers_alloc_total{instance='$instance'}[5m])", "format": "time_series", "groupBy": [ { @@ -636,7 +636,7 @@ { "alias": "Buffers Allocated", "dsType": "prometheus", - "expr": "irate(pg_stat_bgwriter_buffers_backend_fsync{instance='$instance'}[5m])", + "expr": "irate(pg_stat_bgwriter_buffers_backend_fsync_total{instance='$instance'}[5m])", "format": "time_series", "groupBy": [ { @@ -688,7 +688,7 @@ { "alias": "Buffers Allocated", "dsType": "prometheus", - "expr": "irate(pg_stat_bgwriter_buffers_backend{instance='$instance'}[5m])", + "expr": "irate(pg_stat_bgwriter_buffers_backend_total{instance='$instance'}[5m])", "format": "time_series", "groupBy": [ { @@ -740,7 +740,7 @@ { "alias": "Buffers Allocated", "dsType": "prometheus", - "expr": "irate(pg_stat_bgwriter_buffers_clean{instance='$instance'}[5m])", + "expr": "irate(pg_stat_bgwriter_buffers_clean_total{instance='$instance'}[5m])", "format": "time_series", "groupBy": [ { @@ -792,7 +792,7 @@ { "alias": "Buffers Allocated", "dsType": "prometheus", - "expr": "irate(pg_stat_bgwriter_buffers_checkpoint{instance='$instance'}[5m])", + "expr": "irate(pg_stat_bgwriter_buffers_checkpoint_total{instance='$instance'}[5m])", "format": "time_series", "groupBy": [ { diff --git a/postgres_mixin/mixin.libsonnet b/postgres_mixin/mixin.libsonnet index 98c7ea7d1..119d2cdde 100644 --- a/postgres_mixin/mixin.libsonnet +++ b/postgres_mixin/mixin.libsonnet @@ -1,13 +1,3 @@ -{ - grafanaDashboards: { - 'postgres-overview.json': (import 'dashboards/postgres-overview.json'), - }, - - // Helper function to ensure that we don't override other rules, by forcing - // the patching of the groups list, and not the overall rules object. - local importRules(rules) = { - groups+: std.native('parseYaml')(rules)[0].groups, - }, - - prometheusAlerts+: importRules(importstr 'alerts/alerts.yaml'), -} +(import 'alerts/alerts.libsonnet') + +(import 'dashboards/dashboards.libsonnet') + +(import 'config.libsonnet') diff --git a/queries.yaml b/queries.yaml index 35b754319..6f2008cbe 100644 --- a/queries.yaml +++ b/queries.yaml @@ -146,18 +146,7 @@ pg_statio_user_tables: usage: "COUNTER" description: "Number of buffer hits in this table's TOAST table indexes (if any)" -pg_database: - query: "SELECT pg_database.datname, pg_database_size(pg_database.datname) as size_bytes FROM pg_database" - master: true - cache_seconds: 30 - metrics: - - datname: - usage: "LABEL" - description: "Name of the database" - - size_bytes: - usage: "GAUGE" - description: "Disk space used by the database" - +# WARNING: This set of metrics can be very expensive on a busy server as every unique query executed will create an additional time series pg_stat_statements: query: "SELECT t2.rolname, t3.datname, queryid, calls, total_time / 1000 as total_time_seconds, min_time / 1000 as min_time_seconds, max_time / 1000 as max_time_seconds, mean_time / 1000 as mean_time_seconds, stddev_time / 1000 as stddev_time_seconds, rows, shared_blks_hit, shared_blks_read, shared_blks_dirtied, shared_blks_written, local_blks_hit, local_blks_read, local_blks_dirtied, local_blks_written, temp_blks_read, temp_blks_written, blk_read_time / 1000 as blk_read_time_seconds, blk_write_time / 1000 as blk_write_time_seconds FROM pg_stat_statements t1 JOIN pg_roles t2 ON (t1.userid=t2.oid) JOIN pg_database t3 ON (t1.dbid=t3.oid) WHERE t2.rolname != 'rdsadmin'" master: true diff --git a/scripts/errcheck_excludes.txt b/scripts/errcheck_excludes.txt index e759ce68a..58c2051ac 100644 --- a/scripts/errcheck_excludes.txt +++ b/scripts/errcheck_excludes.txt @@ -1,2 +1,2 @@ // Never check for logger errors. -(github.com/go-kit/kit/log.Logger).Log +(github.com/go-kit/log.Logger).Log