✓ Solved
not able to start elasticsearch on my Debian OS machine after installing it
A start job for unit elasticsearch.service has finished with a failure.
-- The job identifier is 699 and the job result is failed.
Jan 10 03:41:23 localhost sudo[12289]: pam_unix(sudo:session): session closed for user root
Jan 10 03:41:27 localhost sshd[12509]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=92.255.85.135 user=root
Jan 10 03:41:29 localhost sshd[12509]: Failed password for root from 92.255.85.135 port 37354 ssh2
Jan 10 03:41:29 localhost sshd[12509]: Received disconnect from 92.255.85.135 port 37354:11: Bye Bye [preauth]
Jan 10 03:41:29 localhost sshd[12509]: Disconnected from authenticating user root 92.255.85.135 port 37354 [preauth]