x-pack security 模块用不了

es集群的每个节点都配置了 xpack.security.enabled: true 也安装了 x-pack.
 
但是GET /_xpack后发现不太对：
 

"security": {

         "description": "Security for the Elastic Stack",

         "available": false,

         "enabled": true

      },

available 这一栏是false.
 
然后尝试改密码：
 
PUT /_xpack/security/user/xxxxxx/_password
{
    "password":"xxxxxxx"
}
 

{

   "error": {

      "root_cause": [

         {

            "type": "security_exception",

            "reason": "current license is non-compliant for [security]",

            "license.expired.feature": "security"

         }

      ],

      "type": "security_exception",

      "reason": "current license is non-compliant for [security]",

      "license.expired.feature": "security"

   },

   "status": 403

}

网上说这个是license过期，可是我的license是明年过期的。 求解答