Add custom postgresql configuration in helm chart

charts/postgresql-ha/custom-values.yaml

@@ -0,0 +1,98 @@
+global:
+  imageRegistry: ""  # paasup.io
+
+postgresql:
+#   image:
+#     tag: ""           # helm 차트의 기본값을 사용. 버전 변경 시에는 차트 변경을 우선 고려하고 변경 불가 상황에서만 변경.
+  username: postgres
+  password: postgres
+  
+  repmgrUsername: postgres
+  repmgrPassword: postgres
+
+  maxConnections: "100" 
+  sharedPreloadLibraries: "repmgr, pgaudit, pg_stat_statements"
+
+  # initdbScripts:
+  #   init.sql: |
+  #     CREATE USER gitea WITH PASSWORD 'gitea';
+  #     CREATE DATABASE gitea;
+  #     GRANT CONNECT ON DATABASE gitea TO gitea;
+
+  #     \c gitea
+  #     CREATE SCHEMA IF NOT EXISTS gitea AUTHORIZATION gitea;
+
+  #     CREATE DATABASE gitea_session;
+  #     GRANT CONNECT ON DATABASE gitea_session TO gitea;
+
+  #     \c gitea_session
+  #     CREATE SCHEMA IF NOT EXISTS gitea AUTHORIZATION gitea;
+
+  #     CREATE TABLE IF NOT EXISTS session (
+  #     key CHAR(16) NOT NULL,
+  #     data bytea,
+  #     expiry bigint NOT NULL,
+  #     PRIMARY KEY (key)
+  #     );
+  #     GRANT ALL ON TABLE session TO gitea;
+  #     ALTER TABLE session OWNER TO gitea;
+  #     ALTER TABLE session SET SCHEMA gitea;
+
+  #     CREATE DATABASE keycloak WITH encoding 'UTF8';
+  #     CREATE USER keycloak WITH PASSWORD 'keycloak';
+  #     GRANT CONNECT ON DATABASE keycloak TO keycloak;
+
+  #     \c keycloak
+  #     CREATE SCHEMA IF NOT EXISTS keycloak AUTHORIZATION keycloak;
+
+  replicaCount: 1
+
+  extraEnvVars:
+    - name: TZ
+      value: Asia/Seoul
+  
+  resources:
+    requests:
+      cpu: 100m
+      memory: 512Mi
+    limits:
+      cpu: 500m
+      memory: 1024Mi
+  
+  tolerations: []
+
+  nodeSelector: {}
+
+pgpool:
+  adminPassword: postgres
+
+  ## postgresql.replcaCount가 2 이상일 때 주석     
+  replicaCount: 0
+
+  ## postgresql.replcaCount가 2 이상일 때 주석 해제    
+  # replicaCount: 2
+  # authenticationMethod: ""
+  # maxPool: "4"
+  # numInitChildren: "32"
+  # resources:
+  #   requests:
+  #     cpu: 100m
+  #     memory: 128Mi
+  #   limits:
+  #     cpu: 100m
+  #     memory: 128Mi
+
+  ## paasup.enabled : true 일 때 주석 해제
+  # customUsers:
+  #   usernames: "gitea;keycloak"
+  #   passwords: "gitea;keycloak"
+
+persistence:
+  enabled: true
+  storageClass: ""
+  size: 1Gi
+
+volumePermissions:
+  enabled: true
+  podSecurityContext:
+    runAsUser: 0

charts/postgresql-ha/templates/_configuration.tpl

@@ -0,0 +1,88 @@
+{{/*
+Return Postgresql - memory
+*/}}
+{{- define "postgresql-ha.configuration.postgresql.memory" -}}
+{{- $memory := required "postgresql.resources.limits.memory is required" .Values.postgresql.resources.limits.memory | trim -}}
+{{- if hasSuffix "Gi" $memory -}}
+    {{ mul (int (trimSuffix "Gi" $memory)) 1024 }}
+{{- else if hasSuffix "GB" $memory  -}}
+    {{ mul (int (trimSuffix "GB" $memory)) 1000 }}
+{{- else if hasSuffix "Mi" $memory  -}}
+    {{ int (trimSuffix "Mi" $memory) }}
+{{- else if hasSuffix "MB" $memory -}}
+    {{ int (trimSuffix "MB" $memory) }}
+{{- else -}}
+    {{ fail "`postgresql.resources.limits.memory` 값이 올바른 형식으로 설정되지 않았습니다. (예: '10Gi', '512Mi')" }}
+{{- end -}}
+{{- end }}
+
+{{/*
+Return Postgresql - shared memory.
+*/}}
+{{- define "postgresql-ha.configuration.postgresql.sharedMemory" -}}
+{{- $memory := include "postgresql-ha.configuration.postgresql.memory" . | int -}}
+{{- if gt $memory 256 -}}
+    {{ div $memory 4 }}Mi
+{{- end }}
+{{- "" -}}
+{{- end }}
+
+{{/*
+Return postgres.conf.
+*/}}
+{{- define "postgresql-ha.configuration.postgresConf" -}}
+{{- $memory := include "postgresql-ha.configuration.postgresql.memory" . | int -}}
+listen_addresses = '*'
+port = {{ .Values.postgresql.containerPorts.postgresql | quote }}
+password_encryption = md5              
+
+wal_level = 'replica'
+archive_mode = 'on'
+archive_command = '/bin/true'
+max_wal_senders = {{ add .Values.postgresql.replicaCount 2 }}
+max_replication_slots = '10'
+hot_standby = 'on'
+logging_collector = 'on'
+log_directory = '/opt/bitnami/postgresql/logs'
+log_filename = 'postgresql.log'
+log_connections = 'false'
+log_disconnections = 'false'
+log_hostname = 'true'
+client_min_messages = 'error'
+pg_stat_statements.max = 10000
+pg_stat_statements.track = all
+include_dir = 'conf.d'
+pgaudit.log_catalog = 'off'
+
+wal_buffers = -1
+max_wal_size = 10GB
+min_wal_size = 1GB
+
+shared_buffers = {{ div $memory 4 }}MB
+
+effective_cache_size = {{ mul (div $memory 4) 3 }}MB
+random_page_cost = 2.0
+
+{{- if ge $memory 16384 }}
+maintenance_work_mem = 2GB
+work_mem = {{ div (subf $memory (div $memory 4)  2048) .Values.postgresql.maxConnections }}MB
+{{- else if ge $memory 8192 }}
+maintenance_work_mem = 1GB
+work_mem = {{ div (subf $memory (div $memory 4)  1024) .Values.postgresql.maxConnections }}MB
+{{- else }}
+maintenance_work_mem = 512MB
+work_mem = {{ div (subf $memory (div $memory 4)  512) .Values.postgresql.maxConnections }}MB
+{{- end }}
+
+log_min_duration_statement = 3000
+
+{{- $tzEnv := "" }}
+{{- range .Values.postgresql.extraEnvVars -}}
+  {{- if eq  "TZ" .name -}}
+    {{- $tzEnv = .value -}}
+  {{- end -}}
+{{- end -}}
+{{- if $tzEnv }}
+timezone={{ $tzEnv }}
+{{- end -}}
+{{- end -}}

charts/postgresql-ha/templates/postgresql/configmap.yaml

@@ -27,4 +27,18 @@ data:
   pg_hba.conf: |-
     {{- include "common.tplvalues.render" ( dict "value" .Values.postgresql.pgHbaConfiguration "context" $ ) | nindent 4 }}
   {{- end }}
+{{- else }}
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ printf "%s-configuration" (include "postgresql-ha.postgresql" .) }}
+  namespace: {{ include "common.names.namespace" . | quote }}
+  labels: {{- include "common.labels.standard" ( dict "customLabels" .Values.commonLabels "context" $ ) | nindent 4 }}
+    app.kubernetes.io/component: postgresql
+  {{- if .Values.commonAnnotations }}
+  annotations: {{- include "common.tplvalues.render" ( dict "value" .Values.commonAnnotations "context" $ ) | nindent 4 }}
+  {{- end }}
+data:
+  postgresql.conf: |-
+    {{- include "postgresql-ha.configuration.postgresConf" . | nindent 4 }}
 {{- end }}

charts/postgresql-ha/templates/postgresql/statefulset.yaml

@@ -458,6 +458,10 @@ spec:
             {{- if .Values.postgresql.extraVolumeMounts }}
             {{- include "common.tplvalues.render" (dict "value" .Values.postgresql.extraVolumeMounts "context" $) | nindent 12 }}
             {{- end }}
+            {{- if ( include "postgresql-ha.configuration.postgresql.sharedMemory" . ) }}
+            - name: dshm
+              mountPath: /dev/shm
+            {{- end }}
         {{- if .Values.metrics.enabled }}
         - name: metrics
           image: {{ include "postgresql-ha.metrics.image" . }}
@@ -598,6 +602,12 @@ spec:
         - name: postgresql-certificates
           emptyDir: {}
         {{- end }}
+        {{- if ( include "postgresql-ha.configuration.postgresql.sharedMemory" . ) }}
+        - name: dshm
+          emptyDir:
+            medium: Memory
+            sizeLimit: {{ include "postgresql-ha.configuration.postgresql.sharedMemory" . }}
+        {{- end }}
       {{- if and .Values.persistence.enabled .Values.persistence.existingClaim }}
         - name: data
           persistentVolumeClaim: