RHCE7 Learning Notes 6--control services and background processes

1. Control Service (services and Daemons)

RHEL7 Previous version Control services use service XX Start|stop|status:

[[Email protected] ~]# service sshd status

The RHEL7 Control service uses SYSTEMCTL Start|stop|status|restart XX service to view the current running status of the service using is-active:

[Email protected] ~]# systemctl status sshd

[Email protected] ~]# Systemctl is-active sshdactive

[Email protected] ~]# Systemctl sart|stop|restart sshd

See if a service will boot automatically start using is-enable, which corresponds to disable:

[Email protected] ~]# Systemctl is-enabled sshdenabled

Disable a service using mask, which corresponds to unmask:

The following summarizes the options for the SYSTEMCTL Command common Control Service:

  start [name ...]                  start   (Activate)  one or more units  start service   stop [name ...]                    stop  (deactivate)  one or more units  stop service   reload [name ...]                 Reload  one or more units  Reload   restart [name ...]                Start or  restart one or more units  Restart   kill [name ...]                    Send signal to processes of a unit  Kill Process   is-active [name ...]              check whether units  are active  whether to start   is-failed [name ...]              check whether units Whether  are failed  fails   status [name...| PID ...]          show runtime status of one or  more units  status

  enable [name ...]                 Enable  one or more unit files  boot   disable [name ...]                disable one  or more unit files  boot does not start   reenable [name ...]               reenable one or  more unit files  Reset Boot 

is-enabled [NAME ...]                  Check whether unit files is enabled to boot mask [NAME ...]                Mask One or more units disable service unmask [NAME ...] Unmask One or more units service

View all services for the system: Systemctl List-units-all or System ctl list-units-files:

[Email protected] ~]# Systemctl list-units

[Email protected] ~]# Systemctl list-unit-files

Add the type option to view all services:

[Email protected] ~]# systemctl list-unit-files--type serviceunit FILE State ABRT-CC                     Pp.service enabled Abrt-oops.service enabled Abrt-pstoreoops.service Disabled

This article is from the "Ordinary Road" blog, please be sure to keep this source http://linjohn.blog.51cto.com/1026193/1599225

RHCE7 Learning Notes 6--control services and background processes