service가동과 재시작시 자동 재가동시키기

centos6

sudo service [서비스명] start

centos6, 7

sudo systemctl start  [서비스명].service

아래에서 알 수 있듯, service와 systemctl은 다음과 같은점에서 다르다.

service는 서비스 명령을 직접 실행하는 상위 커맨드이다. 하지만 centos7에 있는 systemctl은 service커맨드를 리디렉트 해주는 커맨드이다.

sudo systemctl enable redis

chkconfig on

https://serverfault.com/questions/867322/what-is-the-difference-between-service-and-systemctl

What is the difference between service and systemctl?

aybe this is a trivial question, but it is not totally clear to me. On one of our servers we have some background processes running which were started with service and some others which were started with systemctl, like this:

$ service nginx start
$ systemctl start gunicorn

What is the difference between the two commands? Which one is the preferred way to deal with background services? How to configure the preferred command?

service is an "high-level" command used for starting and stopping services in different unixes and linuxes. Depending on the "lower-level" service manager, service redirects on different binaries.

For example, on CentOS 7 it redirects to systemctl, while on CentOS 6 it directly called the relative /etc/init.d script. On the other hand, in older Ubuntu releases it redirects to upstart

service is adequate for basic service management, while directly calling systemctl give greater control options.