I started the elasticsearch cluster with docker-compose, and I wanted to upgrade from 7.9.1 to 7.10.0. There is already some data(Advanced Settings,Spaces,Saved Objects) on kibana. How to upgrade the cluster without losing data?
If I try to modify ' image: elasticsearch:7.9.1>> image: elasticsearch:7.10.0 '
Can elasticsearch continue to use the data generated in 7.9.1?
According to my docker-compose.yaml file, I only need to backup the data of es?
As far as I know, some information (cluster.id, cluster election ID...) will be saved when kibana is started. I have tried to upgrade (6.X> 7.X) in a binary deployment cluster, and there have been many errors, but I It is operated in accordance with the document.
So I want to get more suggestions for this upgrade.