Please tell me how to upgrade ES from lower version to higher version without losing the dat.
what i do is , but i am losing data in cluster.
- Donwload latest version
2.unzip latest vestioin(will new create directory automamaticlly)
- Changing the configuration by editing yml file and given the node iP
4.Stop the existing old version ES
5.Start the service in new directory
6.But when i start the service i am seeing data lost like index.
Please help me how to do without losing data