Re-installing elasticsearch

Elastic Stack Elasticsearch
1

Hello team I have a quick question. If I re-install my elasticsearch cluster via apt like this:

sudo apt install --reinstall -o Dpkg::Options::="--force-confask,confnew,confmiss" elasticsearch

Will I lose my cluster data in /var/data/elasticsearch?. I mean should I backup that first?

2

dpkg does not know anything about your elastic data. it will only reinstall packages in /etc/elasticsearch and /usr/share/elasticsearch

you will loose all your configuration. data will stay as is.

3

Thanks

4

Have you seen that when you start the cluster it says you cannot start with the root user but then you change the /usr/share/elasticsearch and elasticsearch data directory ownership to the elasticsearch user and still the same?

5

when you try to start systemctl start elasticsearch it need write permission to /etc/elasticsearch dir

chmod 777 /etc/elasticsearch or chown -R elasticsearch:elasticsearch