[hotfix] Fix deploy postgres_exporter to manually deploy (!107)

Co-authored-by: denis.patrakeev <denis.patrakeev@avroid.tech>
Reviewed-on: https://git.avroid.tech/K8s/k8s-configs/pulls/107

clusters/k8s-avroid-office.prod.local/namespaces/cloud-prod/monitoring/postgres-exporter/README.md

@@ -0,0 +1,55 @@
+# Install [Prometheus Postgres Exporter](https://github.com/prometheus-community/helm-charts/blob/main/charts/prometheus-postgres-exporter/README.md)
+
+## Create from version
+| Project                      | Version  |
+|------------------------------|----------|
+| Prometheus Postgres Exporter | 6.9.0   |
+
+## Install
+Настраиваем для работы файл конфигурации kubectl для подключения к кластеру Kubernetes
+
+Готовим служебную УЗ для vault (ЭТО АВТОМАТИЗИРОВАНО через ArgoCD):
+```bash
+kubectl apply -f .rbac/vault-service-account.yaml
+kubectl apply -f .rbac/harbor-registry-secret.yaml
+```
+
+Получаем из Vault секреты с паролями/токенами/сертификатами и выгружаем в окружение оболочки:
+```bash
+./prometheus_postgres_exporter_values_secrets_init.sh
+```
+
+Применяем секрет и сетевые политики:
+```bash
+kubectl -n cloud-prod apply -f .secrets/argocd-secret-path.yaml
+kubectl -n cloud-prod apply -f postgres-exporter-network-policy.yaml
+```
+
+И производим непосредственную установку:
+
+```bash
+helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
+helm repo update
+
+helm install -n cloud-prod prometheus-postgres-exporter prometheus-community/prometheus-postgres-exporter -f values-override.yaml
+```
+
+## Upgrade/Changes
+Обновление настроек и чарта делаем так:
+
+В начале сравниваем содержимое `values-override.yaml` с исходным файлом `values.yaml`
+(ссылка на исходную версию зафиксирована в заголовке `values-override.yaml`) через diff (IDE лучше).
+Или с новой версией `values.yaml` в Helm-чарте.
+Вносим необходимые правки, новые опции или добавляем секреты.
+
+Получаем из Vault секреты с паролями/токенами/сертификатами и выгружаем в окружение оболочки:
+```bash
+./prometheus_postgres_exporter_values_secrets_init.sh
+
+kubectl -n cloud-prod apply -f .secrets/argocd-secret-path.yaml
+```
+
+Затем применяем:
+```bash
+helm upgrade -n cloud-prod prometheus-postgres-exporter prometheus-community/prometheus-postgres-exporter -f values-override.yaml
+```

clusters/k8s-avroid-office.prod.local/namespaces/cloud-prod/monitoring/postgres-exporter/argocd-apps-postgres-exporter-app.yaml

@@ -1,51 +0,0 @@
----
-apiVersion: argoproj.io/v1alpha1
-kind: Application
-metadata:
-  name: cloud-postgres-exporter
-  namespace: argocd
-  finalizers:
-    - resources-finalizer.argocd.argoproj.io
-spec:
-  project: cloud-postgres-exporter
-  destination:
-    server: https://kubernetes.default.svc
-    namespace: cloud-prod
-  sources:
-    - repoURL: https://git.avroid.tech/K8s/k8s-configs.git
-      targetRevision: master
-      ref: values
-    - repoURL: https://nexus.avroid.tech/repository/devops-helm-proxy-helm/
-      chart: "prometheus-community/prometheus-postgres-exporter"
-      targetRevision: 6.9.0
-      helm:
-        valueFiles:
-          - $values/clusters/k8s-avroid-office.prod.local/namespaces/cloud-prod/monitoring/postgres-exporter/values-override.yaml
-  syncPolicy:
-    automated:
-      prune: true
-      selfHeal: true
-    syncOptions:
-      - ApplyOutOfSyncOnly=true
-      - CreateNamespace=true
----
-apiVersion: argoproj.io/v1alpha1
-kind: AppProject
-metadata:
-  name: cloud-postgres-exporter
-  namespace: argocd
-  # Finalizer that ensures that project is not deleted until it is not referenced by any application
-  finalizers:
-    - resources-finalizer.argocd.argoproj.io
-spec:
-  sourceRepos:
-    - https://git.avroid.tech/K8s/k8s-configs.git
-    - https://nexus.avroid.tech/repository/devops-helm-proxy-helm/
-  # Only permit applications to deploy to the guestbook namespace in the same cluster
-  destinations:
-    - namespace: cloud-prod
-      server: https://kubernetes.default.svc
-  # Deny all cluster-scoped resources from being created, except for Namespace
-  clusterResourceWhitelist:
-    - group: ''
-      kind: Namespace

clusters/k8s-avroid-office.prod.local/namespaces/cloud-prod/monitoring/postgres-exporter/argocd-apps-postgres-exporter-secret.yaml

@@ -1,17 +0,0 @@
----
-apiVersion: v1
-kind: Secret
-metadata:
-  labels:
-    app.kubernetes.io/managed-by: argocd
-  name: postgres-exporter-secret
-  namespace: cloud-prod
-  annotations:
-    vault.security.banzaicloud.io/vault-addr: "https://vault.avroid.tech"
-    vault.security.banzaicloud.io/vault-role: "cloud-prod"
-    vault.security.banzaicloud.io/vault-skip-verify: "false"
-    vault.security.banzaicloud.io/vault-path: "avroid-office"
-type: Opaque
-data:
-  username: dmF1bHQ6dGVhbS1kZXZvcHMvZGF0YS9zZXJ2aWNlcy9tb25pdG9yaW5nL2s4cy9jbG91ZC1wcm9kL3Bvc3RncmVzLWV4cG9ydGVyI3VzZXJuYW1l
-  password: dmF1bHQ6dGVhbS1kZXZvcHMvZGF0YS9zZXJ2aWNlcy9tb25pdG9yaW5nL2s4cy9jbG91ZC1wcm9kL3Bvc3RncmVzLWV4cG9ydGVyI3Bhc3N3b3Jk

clusters/k8s-avroid-office.prod.local/namespaces/cloud-prod/monitoring/postgres-exporter/postgres-exporter-network-policy.yaml

@@ -5,7 +5,7 @@ metadata:
   name: cloud-postgres-exporter-in
   namespace: cloud-prod
   labels:
-    app.kubernetes.io/managed-by: argocd
+    app.kubernetes.io/managed-by: manually
 spec:
   podSelector:
     matchLabels:
@@ -27,7 +27,7 @@ metadata:
   name: cloud-postgres-exporter-out
   namespace: cloud-prod
   labels:
-    app.kubernetes.io/managed-by: argocd
+    app.kubernetes.io/managed-by: manually
 spec:
   podSelector:
     matchLabels:

clusters/k8s-avroid-office.prod.local/namespaces/cloud-prod/monitoring/postgres-exporter/prometheus_postgres_exporter_values_secrets_init.sh

@@ -0,0 +1,36 @@
+#!/bin/sh
+set -e
+
+rm -rf .secrets
+
+prometheus_postgres_exporter_username=$(vault kv get team-devops/services/monitoring/k8s/cloud-prod/postgres-exporter | grep username | awk '{print $2}')
+prometheus_postgres_exporter_password=$(vault kv get team-devops/services/monitoring/k8s/cloud-prod/postgres-exporter | grep password | awk '{print $2}')
+
+mkdir .secrets
+
+cat > .secrets/argocd-secret-path.yaml << EOF
+---
+apiVersion: v1
+kind: Secret
+metadata:
+  labels:
+    app.kubernetes.io/managed-by: manually
+  name: postgres-exporter-secret
+  namespace: cloud-prod
+type: Opaque
+stringData:
+  postgres_exporter.yml: |
+    ---
+    auth_modules:
+      pg_monitoring:
+        type: userpass
+        userpass:
+          username: ${prometheus_postgres_exporter_username}
+          password: ${prometheus_postgres_exporter_password}
+        options:
+          sslmode: disable
+EOF
+
+echo "Run:"
+echo '  1. kubectl -n cloud-prod apply -f .secrets/argocd-secret-path.yaml'
+echo '  2. kubectl -n cloud-prod apply -f prometheus-network-policy.yaml'

clusters/k8s-avroid-office.prod.local/namespaces/cloud-prod/monitoring/postgres-exporter/values-override.yaml

@@ -14,59 +14,12 @@ resources:
     cpu: 200m
     memory: 256Mi
 
-serviceAccount:
-  # Specifies whether a ServiceAccount should be created
-  create: false
-  # The name of the ServiceAccount to use.
-  # If not set and create is true, a name is generated using the fullname template
-  name: vault
-
 config:
-  ## The datasource properties on config are passed through helm tpl function.
+  # define an existing secret to be mounted as the config file
-  ## ref: https://helm.sh/docs/developing_charts/#using-the-tpl-function
+  # needs to have the key 'postgres_exporter.yml'
-  datasource:
+  existingSecret:
-    # Specify userFile if DB username is stored in a file.
+    enabled: true
-    # For example, to use with vault-injector from Hashicorp
+    name: "postgres-exporter-secret"
-    userSecret:
-      name: postgres-exporter-secret
-      key: username
-    # Only one of password, passwordFile, passwordSecret and pgpassfile can be specified
-    passwordSecret:
-      name: postgres-exporter-secret
-      key: password
-
-  # postgres_exporter.yml
-  postgresExporter: |
-    auth_modules:
-      pg_monitoring:
-        type: userpass
-        userpass:
-          username: "${DATA_SOURCE_USER}"
-          password: "${DATA_SOURCE_PASS}"
-        options:
-          sslmode: disable
 
 nodeSelector:
   node-role.kubernetes.io/worker: ""
-
-annotations:
-  vault.security.banzaicloud.io/vault-addr: "https://vault.avroid.tech"
-  vault.security.banzaicloud.io/vault-role: "cloud-prod"
-  vault.security.banzaicloud.io/vault-skip-verify: "false"
-  vault.security.banzaicloud.io/vault-path: "avroid-office"
-  vault.security.banzaicloud.io/run-as-non-root: "true"
-  vault.security.banzaicloud.io/run-as-user: "1001"
-  vault.security.banzaicloud.io/run-as-group: "1001"
-  vault.security.banzaicloud.io/readonly-root-fs: "true"
-
-# Labels and annotations to attach to the deployment resource
-deployment:
-  annotations:
-    vault.security.banzaicloud.io/vault-addr: "https://vault.avroid.tech"
-    vault.security.banzaicloud.io/vault-role: "cloud-prod"
-    vault.security.banzaicloud.io/vault-skip-verify: "false"
-    vault.security.banzaicloud.io/vault-path: "avroid-office"
-    vault.security.banzaicloud.io/run-as-non-root: "true"
-    vault.security.banzaicloud.io/run-as-user: "1001"
-    vault.security.banzaicloud.io/run-as-group: "1001"
-    vault.security.banzaicloud.io/readonly-root-fs: "true"

clusters/k8s-avroid-office.prod.local/namespaces/cloud-prod/monitoring/prometheus/prometheus_values_secrets_init.sh

@@ -3,7 +3,7 @@ set -e
 
 rm -rf .creds
 
-prometheus_consul_token_value=$(vault kv get team-devops//services/monitoring/k8s/cloud-prod/prometheus | grep consul.secret | awk '{print $2}')
+prometheus_consul_token_value=$(vault kv get team-devops/services/monitoring/k8s/cloud-prod/prometheus | grep consul.secret | awk '{print $2}')
 
 cat > .creds << EOF
 export PROMETHEUS_CONSUL_TOKEN_VALUE='${prometheus_consul_token_value}'

clusters/k8s-avroid-office.prod.local/namespaces/cloud-prod/monitoring/prometheus/values-override.yaml

@@ -40,10 +40,6 @@ server:
   image:
     repository: harbor.avroid.tech/quay-proxy/prometheus/prometheus
 
-  ## External URL which can access prometheus
-  ## Maybe same with Ingress host name
-  baseURL: "cloud-k8s-prometheus.avroid.tech"
-
   ingress:
     ## If true, Prometheus server Ingress will be created
     ##
@@ -168,7 +164,7 @@ serverFiles:
             regex: "([^:]+).*"
             replacement: '${1}'
           - target_label: __address__
-            replacement: cloud-postgres-exporter-prometheus-postgres-exporter:9187
+            replacement: cloud-postgres-exporter-prometheus-postgres-exporter
       - job_name: redis_exporter
         consul_sd_configs:
           - server: consul.avroid.tech