[job-hunter] Add infra stack + Grafana dashboard + n8n digest workflow
New service stack at stacks/job-hunter/ mirroring the payslip-ingest pattern: per-service CNPG database + role (via dbaas null_resource), Vault static role pg-job-hunter (7d rotation), ExternalSecrets for app secrets and DB creds, Deployment with alembic-migrate init container, ClusterIP Service, Grafana datasource ConfigMap. Grafana dashboard job-hunter.json in Finance folder: new roles per day, source breakdown, top companies, GBP salary distribution, recent roles table (sorted by parse confidence then salary). n8n weekly-digest workflow calls POST /digest/generate with bearer auth every Monday 07:00 London; digest_runs table provides idempotency. Refs: code-snp Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Viktor Barzin
parent
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commit
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7 changed files with 655 additions and 17 deletions
320
stacks/job-hunter/main.tf
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320
stacks/job-hunter/main.tf
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variable "image_tag" {
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type = string
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default = "latest"
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description = "job-hunter image tag. Use 8-char git SHA in CI; :latest only for local trials."
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}
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variable "postgresql_host" { type = string }
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locals {
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namespace = "job-hunter"
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image = "registry.viktorbarzin.me/job-hunter:${var.image_tag}"
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labels = {
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app = "job-hunter"
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}
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}
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resource "kubernetes_namespace" "job_hunter" {
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metadata {
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name = local.namespace
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labels = {
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tier = local.tiers.aux
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"istio-injection" = "disabled"
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}
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}
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lifecycle {
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# KYVERNO_LIFECYCLE_V1: goldilocks-vpa-auto-mode ClusterPolicy stamps this label on every namespace
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ignore_changes = [metadata[0].labels["goldilocks.fairwinds.com/vpa-update-mode"]]
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}
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}
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# App secrets — seed these in Vault before applying:
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# secret/job-hunter
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# webhook_bearer_token — bearer for /webhook/cdio, /digest/generate, /refresh
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# cdio_api_key — changedetection.io x-api-key (copy from
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# `jsondecode(secret/changedetection.homepage_credentials).changedetection.api_key`)
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# smtp_username — SMTP sender account (mailserver)
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# smtp_password — SMTP password (mailserver)
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# digest_to_address — where the weekly digest goes
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# digest_from_address — From: header for the digest
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resource "kubernetes_manifest" "external_secret" {
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manifest = {
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apiVersion = "external-secrets.io/v1beta1"
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kind = "ExternalSecret"
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metadata = {
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name = "job-hunter-secrets"
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namespace = local.namespace
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}
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spec = {
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refreshInterval = "15m"
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secretStoreRef = {
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name = "vault-kv"
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kind = "ClusterSecretStore"
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}
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target = {
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name = "job-hunter-secrets"
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template = {
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metadata = {
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annotations = {
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"reloader.stakater.com/match" = "true"
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}
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}
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}
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}
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dataFrom = [{
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extract = {
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key = "job-hunter"
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}
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}]
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}
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}
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depends_on = [kubernetes_namespace.job_hunter]
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}
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# DB credentials from Vault database engine (7-day rotation).
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# Template builds the asyncpg DSN consumed by the FastAPI app as DB_CONNECTION_STRING.
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resource "kubernetes_manifest" "db_external_secret" {
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manifest = {
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apiVersion = "external-secrets.io/v1beta1"
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kind = "ExternalSecret"
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metadata = {
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name = "job-hunter-db-creds"
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namespace = local.namespace
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}
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spec = {
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refreshInterval = "15m"
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secretStoreRef = {
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name = "vault-database"
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kind = "ClusterSecretStore"
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}
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target = {
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name = "job-hunter-db-creds"
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template = {
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metadata = {
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annotations = {
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"reloader.stakater.com/match" = "true"
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}
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}
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data = {
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DB_CONNECTION_STRING = "postgresql+asyncpg://job_hunter:{{ .password }}@${var.postgresql_host}:5432/job_hunter"
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DB_PASSWORD = "{{ .password }}"
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}
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}
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}
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data = [{
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secretKey = "password"
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remoteRef = {
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key = "static-creds/pg-job-hunter"
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property = "password"
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}
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}]
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}
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}
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depends_on = [kubernetes_namespace.job_hunter]
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}
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resource "kubernetes_deployment" "job_hunter" {
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metadata {
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name = "job-hunter"
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namespace = kubernetes_namespace.job_hunter.metadata[0].name
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labels = merge(local.labels, {
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tier = local.tiers.aux
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})
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annotations = {
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"reloader.stakater.com/search" = "true"
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}
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}
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spec {
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replicas = 1
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strategy {
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type = "Recreate"
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}
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selector {
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match_labels = local.labels
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}
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template {
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metadata {
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labels = local.labels
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}
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spec {
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image_pull_secrets {
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name = "registry-credentials"
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}
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init_container {
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name = "alembic-migrate"
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image = local.image
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command = ["python", "-m", "job_hunter", "migrate"]
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env_from {
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secret_ref {
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name = "job-hunter-secrets"
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}
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}
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env_from {
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secret_ref {
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name = "job-hunter-db-creds"
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}
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}
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resources {
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requests = {
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cpu = "50m"
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memory = "256Mi"
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}
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limits = {
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memory = "512Mi"
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}
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}
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}
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container {
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name = "job-hunter"
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image = local.image
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port {
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container_port = 8080
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}
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env_from {
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secret_ref {
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name = "job-hunter-secrets"
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}
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}
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env_from {
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secret_ref {
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name = "job-hunter-db-creds"
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}
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}
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env {
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name = "CDIO_BASE_URL"
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value = "http://changedetection.changedetection.svc.cluster.local"
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}
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env {
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name = "SMTP_HOST"
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value = "mailserver.mailserver.svc.cluster.local"
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}
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env {
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name = "SMTP_PORT"
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value = "587"
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}
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env {
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name = "JOB_HUNTER_WEBHOOK_URL"
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value = "http://job-hunter.job-hunter.svc.cluster.local:8080/webhook/cdio"
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}
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readiness_probe {
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http_get {
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path = "/healthz"
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port = 8080
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}
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initial_delay_seconds = 5
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period_seconds = 10
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}
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liveness_probe {
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http_get {
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path = "/healthz"
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port = 8080
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}
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initial_delay_seconds = 5
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period_seconds = 10
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}
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resources {
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requests = {
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cpu = "100m"
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memory = "512Mi"
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}
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# Chromium baseline ~1Gi — matches broker-sync precedent.
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limits = {
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memory = "1280Mi"
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}
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}
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}
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}
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}
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}
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lifecycle {
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ignore_changes = [spec[0].template[0].spec[0].dns_config] # KYVERNO_LIFECYCLE_V1
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}
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depends_on = [
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kubernetes_manifest.external_secret,
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kubernetes_manifest.db_external_secret,
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]
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}
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# ClusterIP-only — job-hunter has no public UI. Webhook, digest, and refresh
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# endpoints are cluster-internal (n8n / CDIO / CronJob triggers).
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resource "kubernetes_service" "job_hunter" {
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metadata {
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name = "job-hunter"
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namespace = kubernetes_namespace.job_hunter.metadata[0].name
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labels = local.labels
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}
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spec {
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type = "ClusterIP"
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selector = local.labels
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port {
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name = "http"
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port = 8080
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target_port = 8080
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}
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}
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}
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# Plan-time read of the ESO-created DB creds Secret for Grafana datasource.
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# First apply: -target=kubernetes_manifest.db_external_secret first so the Secret exists.
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data "kubernetes_secret" "job_hunter_db_creds" {
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metadata {
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name = "job-hunter-db-creds"
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namespace = kubernetes_namespace.job_hunter.metadata[0].name
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}
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depends_on = [kubernetes_manifest.db_external_secret]
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}
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# Grafana datasource for the job_hunter Postgres DB. Lives in the monitoring
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# namespace so the grafana sidecar (label grafana_datasource=1) picks it up.
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resource "kubernetes_config_map" "grafana_job_hunter_datasource" {
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metadata {
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name = "grafana-job-hunter-datasource"
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namespace = "monitoring"
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labels = {
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grafana_datasource = "1"
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}
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}
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data = {
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"job-hunter-datasource.yaml" = yamlencode({
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apiVersion = 1
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datasources = [{
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name = "Job Hunter"
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type = "postgres"
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access = "proxy"
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url = "${var.postgresql_host}:5432"
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user = "job_hunter"
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uid = "job-hunter-pg"
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# Grafana 11.2+ Postgres plugin reads the DB name from jsonData.database;
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# the top-level `database` field is silently ignored by the frontend.
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jsonData = {
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database = "job_hunter"
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sslmode = "disable"
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postgresVersion = 1600
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timescaledb = false
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}
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secureJsonData = {
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password = data.kubernetes_secret.job_hunter_db_creds.data["DB_PASSWORD"]
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}
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editable = true
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}]
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})
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}
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}
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