wrenix/helm-charts
1
0
Fork 0
Code Issues 8 Pull requests 2 Projects Packages Activity

feat(postgresql): add monitoring

Browse source
This commit is contained in:
WrenIX 2025-04-11 10:08:12 +02:00
parent b3a05ca3d8
commit 5fbb2886b3
Signed by: wrenix
GPG key ID: 7AFDB012974B1BB5
9 changed files with 1590 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
postgresql/Chart.yaml
View file

@ -4,7 +4,7 @@ name: "postgresql"
description: "A Helm chart for running PostgreSQL (Postgres) database"
icon: https://wiki.postgresql.org/images/a/a4/PostgreSQL_logo.3colors.svg
type: "application"
version: "0.2.6"
version: "0.3.0"
# renovate: image=docker.io/library/postgres
appVersion: "17.4-alpine"
maintainers:

21
postgresql/README.md
View file

@ -7,7 +7,7 @@ description: "A Helm chart for running PostgreSQL (Postgres) database"
# postgresql
![Version: 0.2.6](https://img.shields.io/badge/Version-0.2.6-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 17.4-alpine](https://img.shields.io/badge/AppVersion-17.4--alpine-informational?style=flat-square)
![Version: 0.3.0](https://img.shields.io/badge/Version-0.3.0-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 17.4-alpine](https://img.shields.io/badge/AppVersion-17.4--alpine-informational?style=flat-square)
A Helm chart for running PostgreSQL (Postgres) database
@ -41,6 +41,25 @@ helm uninstall postgresql-release
## Values
### Monitoring
| Key | Type | Default | Description |
|-----|------|---------|-------------|
| grafana.dashboards.annotations | object | `{}` | label of configmap |
| grafana.dashboards.enabled | bool | `false` | deploy grafana dashboard in configmap |
| grafana.dashboards.labels | object | `{"grafana_dashboard":"1"}` | label of configmap |
| prometheus.enabled | bool | `false` | add prometheus exporter sidecar |
| prometheus.image.registry | string | `"docker.io"` | image registry (could be overwritten by global.image.registry) |
| prometheus.image.repositry | string | `"prometheuscommunity/postgres-exporter"` | image repository |
| prometheus.image.tag | string | `"v0.17.1"` | image tag |
| prometheus.rules.additionalRules | list | `[]` | add own rules to prometheusrules (current no default alertrules are provided) |
| prometheus.rules.enabled | bool | `false` | deploy prometheusrules |
| prometheus.rules.labels | object | `{}` | labels of prometheusrule |
| prometheus.servicemonitor.enabled | bool | `false` | deploy servicemonitor |
| prometheus.servicemonitor.labels | object | `{}` | label of servicemonitor |
### Other Values
| Key | Type | Default | Description |
|-----|------|---------|-------------|
| affinity | object | `{}` | |

1412
postgresql/grafana_dashboards/postgres-overview.json Normal file
View file

File diff suppressed because it is too large Load diff

14
postgresql/templates/configmap_grafana_dashboards.yaml Normal file
View file

@ -0,0 +1,14 @@
{{- if .Values.grafana.dashboards.enabled }}
---
apiVersion: v1
kind: ConfigMap
metadata:
name: {{ include "postgresql.fullname" . }}-grafana-dashboards
labels:
{{- include "postgresql.labels" . | nindent 4 }}
{{- toYaml .Values.grafana.dashboards.labels | nindent 4 }}
annotations:
{{- toYaml .Values.grafana.dashboards.annotations | nindent 4 }}
data:
{{- (.Files.Glob "grafana_dashboards/*.json" ).AsConfig | nindent 2 }}
{{- end }}

33
postgresql/templates/prometheus-rules.yaml Normal file
View file

@ -0,0 +1,33 @@
{{- if and .Values.prometheus.rules.enabled }}
{{- $fullname := include "postgresql.fullname" . }}
{{- $filter := printf `namespace="%s",service=~"%s.*"` .Release.Namespace $fullname }}
---
apiVersion: monitoring.coreos.com/v1
kind: PrometheusRule
metadata:
name: {{ $fullname }}
labels:
{{- include "postgresql.labels" . | nindent 4 }}
{{- with .Values.prometheus.rules.labels }}
{{- toYaml . | nindent 4 }}
{{- end }}
spec:
groups:
- name: {{ $fullname }}-Default
rules:
- alert: "PostgreSQLSlowQueries"
expr: 'avg(rate(pg_stat_activity_max_tx_duration{ {{ $filter }},datname!~"template.*" }[2m])) by (datname) > 2 * 60'
for: 2m
labels:
severity: warning
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 }}"
`}}
{{- with .Values.prometheus.rules.additionalRules }}
- name: {{ $fullname }}-Additional
rules:
{{- toYaml . | nindent 8 }}
{{- end }}
{{- end }}

6
postgresql/templates/service.yaml
View file

@ -11,5 +11,11 @@ spec:
targetPort: postgresql
protocol: TCP
name: postgresql
{{- if .Values.prometheus.enabled }}
- port: 9187
targetPort: metrics
protocol: TCP
name: metrics
{{- end }}
selector:
{{- include "postgresql.selectorLabels" . | nindent 4 }}

36
postgresql/templates/servicemonitor.yaml Normal file
View file

@ -0,0 +1,36 @@
{{- if and .Values.prometheus.servicemonitor.enabled }}
apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
name: {{ include "postgresql.fullname" . }}
labels:
{{- include "postgresql.labels" . | nindent 4 }}
{{- with .Values.prometheus.servicemonitor.labels }}
{{- toYaml . | nindent 4 }}
{{- end }}
spec:
selector:
matchLabels:
{{- include "postgresql.selectorLabels" . | nindent 6 }}
app.kubernetes.io/component: web
endpoints:
- port: http
path: "/metrics"
enableHttp2: false
basicAuth:
username:
name: {{ include "postgresql.fullname" . }}
key: postgresql_METRICS_USER
password:
name: {{ include "postgresql.fullname" . }}
key: postgresql_METRICS_PASSPHRASE
{{- with .Values.prometheus.servicemonitor }}
{{- with .interval }}
interval: {{ . }}
{{- end }}
{{- with .scrapeTimeout }}
scrapeTimeout: {{ . }}
{{- end }}
{{- end }}
{{- end }}

22
postgresql/templates/statefulset.yaml
View file

@ -56,10 +56,10 @@ spec:
imagePullPolicy: {{ coalesce $.Values.global.image.pullPolicy .pullPolicy }}
{{- end }}
env:
- name: "POSTGRES_PASSWORD"
value: {{ .Values.postgres.password | quote }}
- name: "POSTGRES_USER"
value: {{ .Values.postgres.user | quote }}
- name: "POSTGRES_PASSWORD"
value: {{ .Values.postgres.password | quote }}
- name: "PGPORT"
value: {{ .Values.service.port | quote }}
- name: "PGDATA"
@ -85,6 +85,24 @@ spec:
volumeMounts:
- name: "data"
mountPath: "/var/lib/postgresql/data"
{{- if .Values.prometheus.enabled }}
- name: "exporter"
{{- with .Values.prometheus.image }}
image: "{{ coalesce $.Values.global.image.registry .registry }}/{{ .repository }}:{{ .tag }}"
imagePullPolicy: {{ coalesce $.Values.global.image.pullPolicy .pullPolicy }}
{{- end }}
env:
- name: "DATA_SOURCE_USER"
value: {{ .Values.postgres.user | quote }}
- name: "DATA_SOURCE_PASS"
value: {{ .Values.postgres.password | quote }}
- name: "DATA_SOURCE_URI"
value: {{ printf "127.0.0.1:%d/postgres?sslmode=disable" .Values.service.port }}
ports:
- name: metrics
containerPort: 9187
protocol: TCP
{{- end }}
{{- with .Values.nodeSelector }}
nodeSelector:
{{- toYaml . | nindent 8 }}

48
postgresql/values.yaml
View file

@ -137,3 +137,51 @@ autoupgrade:
# readOnlyRootFilesystem: true
# runAsNonRoot: true
# runAsUser: 1000
prometheus:
# -- add prometheus exporter sidecar
# @section -- Monitoring
enabled: false
servicemonitor:
# -- deploy servicemonitor
# @section -- Monitoring
enabled: false
# -- label of servicemonitor
# @section -- Monitoring
labels: {}
rules:
# -- deploy prometheusrules
# @section -- Monitoring
enabled: false
# -- labels of prometheusrule
# @section -- Monitoring
labels: {}
# -- add own rules to prometheusrules (current no default alertrules are provided)
# @section -- Monitoring
additionalRules: []
image:
# -- image registry (could be overwritten by global.image.registry)
# @section -- Monitoring
registry: docker.io
# -- image repository
# @section -- Monitoring
repository: prometheuscommunity/postgres-exporter
# -- This sets the pull policy for images. (could be overwritten by global.image.pullPolicy)
# @section -- Monitoring
pullPolicy: IfNotPresent
# -- image tag
# @section -- Monitoring
tag: v0.17.1
grafana:
dashboards:
# -- deploy grafana dashboard in configmap
# @section -- Monitoring
enabled: false
# -- label of configmap
# @section -- Monitoring
labels:
grafana_dashboard: "1"
# -- label of configmap
# @section -- Monitoring
annotations: {}