无法使用项目列表（数组）读取自定义事实

我创建了自定义事实 ---> /etc/ansible/facts.d/hdfs.fact

当我使用以下命令运行剧本时

 - debug: var=ansible_local.hdfs
   run_once: true

我如预期得到以下答案：

PLAY [all] *********************************************************************

TASK [setup] *******************************************************************
ok: [cdh-2]
ok: [cdh-3]
ok: [cdh-1]

TASK [preparation : debug] *****************************************************
ok: [cdh-1] => {
    "ansible_local.hdfs": {
        "items": [
            {
                "base": true,
                "config": {
                    "items": []
                },
                "displayName": "Failover Controller Default Group",
                "name": "hdfs-FAILOVERCONTROLLER-BASE",
                "roleType": "FAILOVERCONTROLLER",
                "serviceRef": {
                    "clusterName": "cluster",
                    "serviceName": "hdfs"
                }
            },
            {
                "base": true,
                "config": {
                    "items": [
                        {
                            "name": "balancer_java_heapsize",
                            "value": "491782144"
                        }
                    ]
                },
                "displayName": "Balancer Default Group",
                "name": "hdfs-BALANCER-BASE",
                "roleType": "BALANCER",
                "serviceRef": {
                    "clusterName": "cluster",
                    "serviceName": "hdfs"
                }
            },
            {
                "base": true,
                "config": {
                    "items": []
                },
                "displayName": "HttpFS Default Group",
                "name": "hdfs-HTTPFS-BASE",
                "roleType": "HTTPFS",
                "serviceRef": {
                    "clusterName": "cluster",
                    "serviceName": "hdfs"
                }
            }
        ]
    }
}

我的问题是如何解析该 json 中的特定值。 我已经尝试了很多语法但没有成功

debug: var=ansible_local.hdfs.items[0].config.displayName
debug: var=ansible_local.hdfs.items.config.displayName

hdfs.fact内容：

{
  "items" : [ {
    "name" : "hdfs-FAILOVERCONTROLLER-BASE",
    "displayName" : "Failover Controller Default Group",
    "roleType" : "FAILOVERCONTROLLER",
    "base" : true,
    "serviceRef" : {
      "clusterName" : "cluster",
      "serviceName" : "hdfs"
    },
    "config" : {
      "items" : [ ]
    }
  }, {
    "name" : "hdfs-BALANCER-BASE",
    "displayName" : "Balancer Default Group",
    "roleType" : "BALANCER",
    "base" : true,
    "serviceRef" : {
      "clusterName" : "cluster",
      "serviceName" : "hdfs"
    },
    "config" : {
      "items" : [ {
        "name" : "balancer_java_heapsize",
        "value" : "491782144"
      } ]
    }
  }, {
    "name" : "hdfs-HTTPFS-BASE",
    "displayName" : "HttpFS Default Group",
    "roleType" : "HTTPFS",
    "base" : true,
    "serviceRef" : {
      "clusterName" : "cluster",
      "serviceName" : "hdfs"
    },
    "config" : {
      "items" : [ ]
    }
  } ]
}

thanks

原因debug: var=ansible_local.hdfs.items.config.displayName失败的是items是一个保留字。

Try

debug: var=ansible_local.hdfs['items'].config.displayName反而。

我在帖子中找到了解决方案拉扎尔特拉维察 here https://github.com/ansible/ansible/issues/10581 https://github.com/ansible/ansible/issues/10581