Kibana启动后浏览器打开报错“Kibana server is not ready yet”，查看kibana日志显示：

{"type":"log","@timestamp":"2019-11-24T07:32:05Z","tags":["warning","migrations"],"pid":6181,"message":"Another Kibana instance appears to be migrating the index. Waiting for that migration to complete. If no other Kibana instance is attempting migrations, you can get past this message by deleting index .kibana_task_manager_1 and restarting Kibana."}

提示需要删除kibana索引，因此操作步骤如下

1. 停止kibana

# service kibana stop

2. 删除kibana索引

# curl -XDELETE http://localhost:9200/.kibana*

3. 启动kibana

# service kibana start