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Add pgpool connection pooling for PostgreSQL
- Add Pgpool and PgpoolVersion (4.6.0) resources to db template - Set max_connections=400 to satisfy pgpool connection formula: max_pool(4) * num_init_children(15) * 2 = 120 <= 397 - Route database traffic through pgpool when enabled - Add PgPoolSettings type and pgpool section in values Signed-off-by: notTabassum <oyshee@appscode.com>
1 parent 4679ce5 commit 7cc1865

8 files changed

Lines changed: 180 additions & 1 deletion

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‎apis/installer/v1alpha1/ace_ace_types.go‎

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@@ -395,6 +395,16 @@ type Settings struct {
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Firebase FirebaseSettings `json:"firebase"`
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// +optional
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Marketplace *MarketplaceSettings `json:"marketplace,omitempty"`
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// +optional
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PgPool *PgPoolSettings `json:"pgpool,omitempty"`
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}
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type PgPoolSettings struct {
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Enabled bool `json:"enabled"`
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Replicas int `json:"replicas"`
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Resources core.ResourceRequirements `json:"resources"`
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// +optional
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Config map[string]string `json:"config,omitempty"`
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}
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type DBSettings struct {

‎apis/installer/v1alpha1/zz_generated.deepcopy.go‎

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‎charts/ace/README.md‎

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@@ -141,6 +141,13 @@ The following table lists the configurable parameters of the `ace` chart and the
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| settings.db.auth.username | | <code>postgres</code> |
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| settings.db.auth.password | | <code>"xyz"</code> |
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| settings.db.logSQL | | <code>false</code> |
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| settings.pgpool.enabled | | <code>true</code> |
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| settings.pgpool.replicas | | <code>1</code> |
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| settings.pgpool.config.num_init_children | | <code>"15"</code> |
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| settings.pgpool.config.max_pool | | <code>"4"</code> |
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| settings.pgpool.resources.limits.memory | | <code>512Mi</code> |
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| settings.pgpool.resources.requests.memory | | <code>256Mi</code> |
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| settings.pgpool.resources.requests.cpu | | <code>250m</code> |
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| settings.cache.version | | <code>"7.2.4"</code> |
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| settings.cache.cacheInterval | | <code>60</code> |
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| settings.cache.persistence.size | | <code>10Gi</code> |

‎charts/ace/templates/_helpers.tpl‎

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@@ -173,8 +173,12 @@ Returns the ServiceMonitor labels
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Determine database host name
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*/}}
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{{- define "settings.database.host" -}}
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{{- if .Values.settings.pgpool.enabled -}}
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{{- printf "%s-pgpool.%s.svc:9999" (include "ace.fullname" .) .Release.Namespace -}}
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{{- else -}}
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{{- printf "%s-db.%s.svc:5432" (include "ace.fullname" .) .Release.Namespace -}}
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{{- end -}}
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{{- end -}}
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{{- define "settings.oauth2JWTSecret" -}}
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{{ .Values.settings.security.oauth2JWTSecret | default (randAlphaNum 43) }}

‎charts/ace/templates/db/db-config.yaml‎

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@@ -12,7 +12,7 @@ metadata:
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type: Opaque
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stringData:
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user.conf: |
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max_connections=110
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max_connections=400
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{{- if .Values.pgoutbox.enabled }}
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wal_level=logical
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max_wal_senders=50

‎charts/ace/templates/db/pgpool.yaml‎

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{{- if .Values.settings.pgpool.enabled }}
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apiVersion: kubedb.com/v1alpha2
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kind: Pgpool
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metadata:
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name: {{ include "ace.fullname" . }}-pgpool
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namespace: {{ .Release.Namespace }}
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labels:
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{{- include "ace.labels" . | nindent 4 }}
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spec:
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version: "4.6.0"
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replicas: {{ .Values.settings.pgpool.replicas }}
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postgresRef:
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name: {{ include "ace.fullname" . }}-db
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namespace: {{ .Release.Namespace }}
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syncUsers: true
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deletionPolicy: {{ .Values.settings.db.deletionPolicy }}
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{{- if .Values.settings.pgpool.config }}
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configuration:
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inline:
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{{- range $k, $v := .Values.settings.pgpool.config }}
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{{ $k }}: "{{ $v }}"
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{{- end }}
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{{- end }}
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podTemplate:
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spec:
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containers:
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- name: pgpool
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resources:
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{{- toYaml .Values.settings.pgpool.resources | nindent 10 }}
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{{- if eq (include "distro.openshift" $) "true" }}
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securityContext:
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runAsGroup: {{ .Values.securityContext.runAsUser }}
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runAsUser: {{ .Values.securityContext.runAsUser }}
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capabilities:
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drop:
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- ALL
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runAsNonRoot: true
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seccompProfile:
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type: RuntimeDefault
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securityContext:
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fsGroup: {{ .Values.securityContext.runAsUser }}
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runAsUser: {{ .Values.securityContext.runAsUser }}
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runAsGroup: {{ .Values.securityContext.runAsUser }}
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{{- end }}
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{{- if .Values.global.monitoring }}
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monitor:
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agent: {{ .Values.global.monitoring.agent }}
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prometheus:
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serviceMonitor:
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interval: 30s
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labels:
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{{- toYaml .Values.global.monitoring.serviceMonitor.labels | nindent 10 }}
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{{- end }}
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{{- end }}
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---
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apiVersion: catalog.kubedb.com/v1alpha1
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kind: PgpoolVersion
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metadata:
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name: 4.6.0
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spec:
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exporter:
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image: ghcr.io/appscode-images/pgpool2_exporter:v1.2.2
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gitSyncer:
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image: registry.k8s.io/git-sync/git-sync:v4.4.2
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pgpool:
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image: ghcr.io/appscode-images/pgpool2:4.6.0
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securityContext:
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runAsAnyNonRoot: true
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runAsUser: 70
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updateConstraints:
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allowlist:
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- '>= 4.6.0, <= 4.6.0'
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version: 4.6.0

‎charts/ace/values.openapiv3_schema.yaml‎

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@@ -24690,6 +24690,54 @@ properties:
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required:
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- encryptionKey
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type: object
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pgpool:
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properties:
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config:
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additionalProperties:
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type: string
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type: object
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enabled:
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type: boolean
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replicas:
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type: integer
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resources:
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properties:
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claims:
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items:
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properties:
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name:
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type: string
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request:
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type: string
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required:
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- name
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type: object
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type: array
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x-kubernetes-list-map-keys:
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- name
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x-kubernetes-list-type: map
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limits:
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additionalProperties:
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anyOf:
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- type: integer
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- type: string
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pattern: ^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$
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x-kubernetes-int-or-string: true
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type: object
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requests:
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additionalProperties:
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anyOf:
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- type: integer
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- type: string
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pattern: ^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$
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x-kubernetes-int-or-string: true
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type: object
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type: object
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required:
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- enabled
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- replicas
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- resources
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type: object
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platform:
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properties:
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appName:

‎charts/ace/values.yaml‎

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@@ -295,6 +295,18 @@ settings:
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username: postgres
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password: "xyz"
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logSQL: false
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pgpool:
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enabled: true
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replicas: 1
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config:
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num_init_children: "15"
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max_pool: "4"
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resources:
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limits:
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memory: 512Mi
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requests:
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memory: 256Mi
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cpu: 250m
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cache:
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version: "7.2.4"
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cacheInterval: 60

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