This post will guide you how to check the status of a service in your CentOS or RHEL Linux system. How do I list all running services in CentOS/RHEL 6/7/8 Linux.
- List All Running Services on CentOS 6
- List All Running Services on CentOS 7/8
- Check Status of a Service on CentOS 6
- Check Status of a Service on CentOS 7/8
List All Running Services on CentOS 6
If you want to list all running services on your CentOS /RHEL 6 Linux system, and you can use service command with --status-all option, type:
$ service --status-all $ service --status-all | less
Outputs:
[root@devops ~]# service --status-all| less
Stopped
cgred is stopped
crond (pid 1401) is running...
htcacheclean is stopped
httpd (pid 20286) is running...
Table: filter
Chain INPUT (policy ACCEPT)
num target prot opt source destination
1 ACCEPT all ::/0 ::/0 state RELATED,ESTABLISHED
2 ACCEPT icmpv6 ::/0 ::/0
3 ACCEPT all ::/0 ::/0
4 ACCEPT udp ::/0 fe80::/64 state NEW udp dpt:546
5 ACCEPT tcp ::/0 ::/0 state NEW tcp dpt:22
6 REJECT all ::/0 ::/0 reject-with icmp6-adm-prohibited
Chain FORWARD (policy ACCEPT)
num target prot opt source destination
1 REJECT all ::/0 ::/0 reject-with icmp6-adm-prohibited
Chain OUTPUT (policy ACCEPT)
num target prot opt source destination
......
Check Status of a Service on CentOS 6
If you want to check the status of a service (such as: httpd serivce ) in CentOS or RHEL 6 Linux,you can use one of the following command:
$ service httpd status
or
$ /etc/init.d/httpd status
Outputs:
[root@devops ~]# service httpd status httpd (pid 20286) is running... [root@devops ~]# /etc/init.d/httpd status httpd (pid 20286) is running...
List All Running Services on CentOS 7/8
If you want to list all running services in CentOS 7 or CentOS 8 system, and you can use the below systemctl command, type:
$ systemctl list-units --type=service
Outputs:
[devops@mydevops ~]$ systemctl list-units --type=service UNIT LOAD ACTIVE SUB DESCRIPTION accounts-daemon.service loaded active running Accounts Service alsa-state.service loaded active running Manage Sound Card State (restore and> atd.service loaded active running Job spooling tools auditd.service loaded active running Security Auditing Service avahi-daemon.service loaded active running Avahi mDNS/DNS-SD Stack bolt.service loaded active running Thunderbolt system service chronyd.service loaded active running NTP client/server colord.service loaded active running Manage, Install and Generate Color P> crond.service loaded active running Command Scheduler ...... [devops@mydevops ~]$ systemctl list-units --type=service | wc -l 71
To list all services in your system, you can type the following command:
$ systemctl list-unit-files
Outputs:
[devops@mydevops ~]$ systemctl list-unit-files |less UNIT FILE STATE proc-sys-fs-binfmt_misc.automount static -.mount generated boot.mount generated dev-hugepages.mount static dev-mqueue.mount static home.mount generated proc-fs-nfsd.mount static proc-sys-fs-binfmt_misc.mount static sys-fs-fuse-connections.mount static sys-kernel-config.mount static ...... [devops@mydevops ~]$ systemctl list-unit-files | wc -l 414
Check Status of a Service on CentOS 7/8
If you want to check the status of a service named httpd in your CentOS or RHEL 7/8 Linux system, just run the following command:
$ systemctl status httpd.service
Outputs:
[devops@mydevops ~]$ systemctl status httpd.service httpd.service - The Apache HTTP Server Loaded: loaded (/usr/lib/systemd/system/httpd.service; disabled; vendor preset: disabled) Active: active (running) since Sat 2019-10-12 06:23:25 EDT; 2s ago Docs: man:httpd.service(8) Main PID: 3199 (httpd) Status: "Started, listening on: port 80" Tasks: 213 (limit: 8297) Memory: 29.4M CGroup: /system.slice/httpd.service ├─3199 /usr/sbin/httpd -DFOREGROUND ├─3208 /usr/sbin/httpd -DFOREGROUND ├─3209 /usr/sbin/httpd -DFOREGROUND ├─3210 /usr/sbin/httpd -DFOREGROUND └─3211 /usr/sbin/httpd -DFOREGROUND Oct 12 06:23:24 mydevops.com systemd[1]: Starting The Apache HTTP Server... Oct 12 06:23:25 mydevops.com httpd[3199]: AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using mydevops.com.> Oct 12 06:23:25 mydevops.com httpd[3199]: Server configured, listening on: port 80 Oct 12 06:23:25 mydevops.com systemd[1]: Started The Apache HTTP Server.
To check a service named httpd if it is running or enabled in your system, and you can use the below commands:
$ systemctl is-active httpd $ systemctl is-enabled httpd
Outputs:
[devops@mydevops ~]$ systemctl is-active httpd active [devops@mydevops ~]$ systemctl is-enabled httpd disabled
Conclusion
You should know that how to list all running services or check the stauts of a given service in your CentOS/RHEL/ 6/7/8 Linux.