Previous versions of CentOS/RedHat Linux use init scripts located in the /etc/rc.d/init directory to start and stop services. In CentOS/RHEL 7, these init scripts have been replaced with systemd service units. Service units have a .service extension. Use the systemctl command as follows to list all loaded service units:

# systemctl list-units –type service –all

UNIT                                                            LOAD      ACTIVE   SUB     DESCRIPTION
abrt-ccpp.service                                               loaded    inactive dead    Install ABRT coredump hook
abrt-oops.service                                               loaded    inactive dead    ABRT kernel log watcher
abrt-vmcore.service                                             loaded    inactive dead    Harvest vmcores for ABRT
abrt-xorg.service                                               loaded    inactive dead    ABRT Xorg log watcher
abrtd.service                                                   loaded    inactive dead    ABRT Automated Bug Reporting Tool

Check status of service with systemd 1. systemd service units correspond to system services. Use the following command to display detailed information about a service unit. This example displays information about the ntpd.service service unit. You can omit the .service extension if you want.

# systemctl status ntpd.service ● ntpd.service - Network Time Service

 Loaded: loaded (/usr/lib/systemd/system/ntpd.service; enabled; vendor preset: disabled)
 Active: active (running) since Sat 2017-08-26 15:01:55 IST; 2 months 20 days ago

Main PID: 19984 (ntpd)

 CGroup: /system.slice/ntpd.service
         └─19984 /usr/sbin/ntpd -u ntp:ntp -g

Warning: Journal has been rotated since unit was started. Log output is incomplete or unavailable. The following information is available for the specified service unit:

Loaded: If the service is loaded, the absolute path to the service unit file, and if the service unit is enabled Active: If the service unit is running and a timestamp Main PID: The Process ID of the corresponding system service and the service name Status: Additional information about the corresponding system service Process: Additional information about related processes CGroup: Additional information about related Control Groups The most recent log entries are displayed if the command is executed by the root user.

You would see the status of the service in green (if running) or in red (if stopped) as shown below.

service status check in RHEL CentOS 7

2. To list the status of all services:

# systemctl list-unit-files –type=service –all For Example :

# systemctl list-unit-files –type=service UNIT FILE STATE abrt-ccpp.service enabled abrt-oops.service enabled abrt-pstoreoops.service disabled abrt-vmcore.service enabled abrt-xorg.service enabled You should see the service in disabled mode highlighted with red color and the service in enabled mode highlighted with green color as show below.

centOS RHEL 7 find service status

Other commands to check the status of service Use the following command to check whether a service is running (active) or not running (inactive):

# systemctl is-active sshd active Use the following command to check whether a service is enabled or disabled:

# systemctl is-enabled sshd enabled # systemctl is-enabled httpd disabled