For that first get the process id (pid) from the below command
ps aux | grep logstash
After the collection of pid (suppose the pid = 6666) from above, use that like below to get the start time
ps -eo pid,cmd,lstart | grep 6666
For that first get the process id (pid) from the below command
ps aux | grep logstash
After the collection of pid (suppose the pid = 6666) from above, use that like below to get the start time
ps -eo pid,cmd,lstart | grep 6666