没有对我的Ubuntu（4.4.0-142-generic #168-Ubuntu SMP）进行任何重大系统更新，Kibana
7.2.0停止工作。我仍然可以使用启动服务，sudo systemctl start kibana.service并且相应的状态看起来不错。只有警告，没有错误，这似乎不是问题所在：

# sudo systemctl status kibana.service 
● kibana.service - Kibana
   Loaded: loaded (/etc/systemd/system/kibana.service; enabled; vendor preset: enabled)
   Active: active (running) since Wed 2019-07-10 09:43:49 CEST; 22min ago
 Main PID: 14856 (node)
    Tasks: 21
   Memory: 583.2M
      CPU: 1min 30.067s
   CGroup: /system.slice/kibana.service
           └─14856 /usr/share/kibana/bin/../node/bin/node --no-warnings --max-http-header-size=65536 /usr/share/kibana/bin/../src/cli -c /etc/kibana/kibana.yml

Jul 10 09:56:36 srv003 kibana[14856]: {"type":"log","@timestamp":"2019-07-10T07:56:36Z","tags":["warning","task_manager"],"pid":14856,"message":"The task maps_telemetry \"Maps-maps_telemetry\" is not cancellable."}

但是，当我http://srv003:5601/在客户端计算机上访问时，我仍然只看到（即使在等待20分钟之后）：

Kibana server is not ready yet

在服务器srv003本身上，我看到了

me@srv003:# curl -XGET http://localhost:5601/status -I
curl: (7) Failed to connect to localhost port 5601: Connection refused

这很奇怪，因为Kibana似乎真的在该端口上监听，并且防火墙出于测试目的而被禁用：

root@srv003# sudo lsof -nP -i | grep 5601
node      14856        kibana   18u  IPv4 115911041      0t0  TCP 10.0.0.72:5601 (LISTEN)
root@srv003# sudo ufw status verbose
Status: inactive

kibana.service两者的日志中没有可疑的东西：

root@srv003:/var/log# journalctl -u kibana.service | grep -A 99 "Jul 10 10:09:14"
Jul 10 10:09:14 srv003 systemd[1]: Started Kibana.
Jul 10 10:09:38 srv003 kibana[14856]: {"type":"log","@timestamp":"2019-07-10T08:09:38Z","tags":["warning","task_manager"],"pid":14856,"message":"The task maps_telemetry \"Maps-maps_telemetry\" is not cancellable."}

我的Elasticsearch仍在运行。在有关Kibana的相应日志文件中没有有趣的事情：

root@srv003:/var/log# cat elasticsearch/elasticsearch.log  |grep kibana
[2019-07-10T09:46:25,158][INFO ][o.e.c.m.MetaDataIndexTemplateService] [srv003] adding template [.kibana_task_manager] for index patterns [.kibana_task_manager]
[2019-07-10T09:47:32,955][INFO ][o.e.c.m.MetaDataCreateIndexService] [srv003] [.monitoring-kibana-7-2019.07.10] creating index, cause [auto(bulk api)], templates [.monitoring-kibana], shards [1]/[0], mappings [_doc]

现在我的选项已经用光了，希望有人能给我另一个提示。

编辑： 我没有安装任何Kibana插件。