不爲也 比不能也

As the project manager of stagemonitor, an open source performance monitoring tool, I've recently been looking for a database to replace the cool-but-aging Graphite Time Series DataBase (TSDB) as the backend. TSDBs are specialised packages for storing (performance) metric data, like the response time of your app or the CPU utilisation of a server. Ultimately, we were looking for a datastore that..

There will come a time when you need to perform a rolling restart of your cluster—keeping the cluster online and operational, but taking nodes offline one at a time.cluster를 차례대로 재 시작(cluster는 온라인이고 동작을 하는 상태로 유지하면서, node를 차례로 오프라인으로 하는)해야 할 경우가 있을 것이다.The common reason is either an Elasticsearch version upgrade, or some kind of maintenance on the server itself (such as an OS update, or hardware..