通过Terraform传递文件夹中的所有文件

Question

我正在为我们的内部项目建立一个监控堆栈。我希望他们能够设计自己的监控仪表板，以便在Grafana中使用，所以我无法预测这些仪表板将被调用。

我创建了一个名为grafana_dashboard的文件夹，我将指导他们将仪表板存储为JSON文件，并希望将该文件夹中的所有内容传递给Grafana实例。

我已经尝试了很多这样的变体：

resource "grafana_dashboard" "dashboards" {
  for_each = fileset(path.module, "grafana_dashboard/*.json")
  config_json = "${each.key}"
  depends_on = [aiven_service.grafana]
}

但是不断得到这个错误：

Error: invalid character 'g' looking for beginning of value

  on ../modules/monitoring/grafana.tf line 139, in resource "grafana_dashboard" "dashboards":
 139: resource "grafana_dashboard" "dashboards" {

你们谁能看出我做错了什么吗？

下面是我试图传递的一个.json文件的示例：

{
  "annotations": {
    "list": [
      {
        "builtIn": 1,
        "datasource": "-- Grafana --",
        "enable": true,
        "hide": true,
        "iconColor": "rgba(0, 211, 255, 1)",
        "name": "Annotations & Alerts",
        "type": "dashboard"
      },
      {
        "datasource": "Prometheus",
        "enable": true,
        "expr": "sum(changes(nginx_ingress_controller_config_last_reload_successful_timestamp_seconds{instance!=\"unknown\",controller_class=~\"$controller_class\",namespace=~\"$namespace\"}[30s])) by (controller_class)",
        "hide": false,
        "iconColor": "rgba(255, 96, 96, 1)",
        "limit": 100,
        "name": "Config Reloads",
        "showIn": 0,
        "step": "30s",
        "tagKeys": "controller_class",
        "tags": [],
        "titleFormat": "Config Reloaded",
        "type": "tags"
      }
    ]
  },
  "description": "Ingress-nginx supports a rich collection of prometheus metrics. If you have prometheus and grafana installed on your cluster then prometheus will already be scraping this data due to the scrape annotation on the deployment.",
  "editable": false,
  "gnetId": 9614,
  "graphTooltip": 0,
  "id": 18,
  "iteration": 1574177838584,
  "links": [],
  "panels": [
    {
      "columns": [
        {
          "text": "Current",
          "value": "current"
        }
      ],
      "datasource": "Prometheus",
      "fontSize": "100%",
      "gridPos": {
        "h": 15,
        "w": 24,
        "x": 0,
        "y": 0
      },
      "height": "1024",
      "id": 85,
      "links": [],
      "options": {},
      "pageSize": 15,
      "scroll": true,
      "showHeader": true,
      "sort": {
        "col": 1,
        "desc": false
      },
      "styles": [
        {
          "alias": "Time",
          "dateFormat": "YYYY-MM-DD HH:mm:ss",
          "pattern": "Time",
          "type": "date"
        },
        {
          "alias": "TTL",
          "colorMode": "cell",
          "colors": [
            "rgba(245, 54, 54, 0.9)",
            "rgba(237, 129, 40, 0.89)",
            "rgba(50, 172, 45, 0.97)"
          ],
          "dateFormat": "YYYY-MM-DD HH:mm:ss",
          "decimals": 0,
          "pattern": "Current",
          "thresholds": [
            "0",
            "691200"
          ],
          "type": "number",
          "unit": "s"
        },
        {
          "alias": "",
          "colorMode": null,
          "colors": [
            "rgba(245, 54, 54, 0.9)",
            "rgba(237, 129, 40, 0.89)",
            "rgba(50, 172, 45, 0.97)"
          ],
          "decimals": 2,
          "pattern": "/.*/",
          "thresholds": [],
          "type": "number",
          "unit": "short"
        }
      ],
      "targets": [
        {
          "expr": "avg(nginx_ingress_controller_ssl_expire_time_seconds{kubernetes_pod_name=~\"$controller\",namespace=~\"$namespace\",ingress=~\"$ingress\"}) by (host) - time()",
          "format": "time_series",
          "instant": false,
          "intervalFactor": 1,
          "legendFormat": "{{ host }}",
          "metric": "gke_letsencrypt_cert_expiration",
          "refId": "A",
          "step": 1
        }
      ],
      "title": "Ingress Certificate Expiry",
      "transform": "timeseries_aggregations",
      "type": "table"
    }
  ],
  "refresh": "5s",
  "schemaVersion": 19,
  "style": "dark",
  "tags": [
    "nginx"
  ],
  "templating": {
    "list": [
      {
        "allValue": ".*",
        "current": {
          "text": "All",
          "value": "$__all"
        },
        "datasource": "Prometheus",
        "definition": "",
        "hide": 0,
        "includeAll": true,
        "label": "Namespace",
        "multi": false,
        "name": "namespace",
        "options": [],
        "query": "label_values(nginx_ingress_controller_config_hash, controller_namespace)",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": ".*",
        "current": {
          "text": "All",
          "value": "$__all"
        },
        "datasource": "Prometheus",
        "definition": "",
        "hide": 0,
        "includeAll": true,
        "label": "Controller Class",
        "multi": false,
        "name": "controller_class",
        "options": [],
        "query": "label_values(nginx_ingress_controller_config_hash{namespace=~\"$namespace\"}, controller_class) ",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": ".*",
        "current": {
          "text": "All",
          "value": "$__all"
        },
        "datasource": "Prometheus",
        "definition": "",
        "hide": 0,
        "includeAll": true,
        "label": "Controller",
        "multi": false,
        "name": "controller",
        "options": [],
        "query": "label_values(nginx_ingress_controller_config_hash{namespace=~\"$namespace\",controller_class=~\"$controller_class\"}, controller_pod) ",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": ".*",
        "current": {
          "text": "All",
          "value": "$__all"
        },
        "datasource": "Prometheus",
        "definition": "",
        "hide": 0,
        "includeAll": true,
        "label": "Ingress",
        "multi": false,
        "name": "ingress",
        "options": [],
        "query": "label_values(nginx_ingress_controller_requests{namespace=~\"$namespace\",controller_class=~\"$controller_class\",controller=~\"$controller\"}, ingress) ",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 2,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      }
    ]
  },
  "time": {
    "from": "now-5m",
    "to": "now"
  },
  "timepicker": {
    "refresh_intervals": [
      "5s",
      "10s",
      "30s",
      "2m",
      "5m",
      "15m",
      "30m",
      "1h",
      "2h",
      "1d"
    ],
    "time_options": [
      "5m",
      "15m",
      "1h",
      "6h",
      "12h",
      "24h",
      "2d",
      "7d",
      "30d"
    ]
  },
  "timezone": "browser",
  "title": "Cert-manager",
  "uid": "nginx",
  "version": 12
}

这是可行的，所以我知道我可以做到，但不适合我的需要，因为我需要硬编码每个文件的名称：

resource "grafana_dashboard" "nginx_ingress_controller" {
  config_json = templatefile("${path.module}/grafana_dashboard/nginx-ingress-controller.json", { DS_PROMETHEUS = local.prometheus_datasource_name })
  depends_on = [aiven_service.grafana]
}

Answer 1

您需要实际使用grafana_dashboard的config_json参数中的文件内容。

将您的资源定义切换为以下内容就足够了：

resource "grafana_dashboard" "dashboards" {
  for_each    = fileset(path.module, "grafana_dashboard/*.json")
  config_json = file("${path.module}/${each.key}")
  depends_on  = [aiven_service.grafana]
}