How to keep EnterpriseSearch running all the time

Unfortunately, that will soon stop.

# ENT_SEARCH_DEFAULT_PASSWORD=[REDACTED] nohup /usr/share/enterprise-search/bin/enterprise-search &
[1] 16209
# nohup: ignore the input and append the output to `nohup.out'.


[1]+  STOP                  ENT_SEARCH_DEFAULT_PASSWORD=[REDACTED] nohup /usr/share/enterprise-search/bin/enterprise-search
# jobs
[1]+  STOP                  ENT_SEARCH_DEFAULT_PASSWORD=[REDACTED] nohup /usr/share/enterprise-search/bin/enterprise-search
#

I have installed the rpm as well as other Elastic products, but why can't EnterpriseSearch start properly with systemctl start enterprise-search?
To be precise, the status is healthy, but I cannot access it from a browser.
I have confirmed that I can start EnterpriseSearch with bin/enterprise-search.