初期設定 : サービスの設定2023/02/20

	サービスの状態の確認や有効化/無効化は以下のように実行可能です。
[1]	サービスの一覧を表示します。

# 稼働中のサービスの一覧

[root@dlp ~]#

systemctl -t service

  UNIT                               LOAD   ACTIVE SUB     DESCRIPTION         >
  atd.service                        loaded active running Deferred execution s>
  auditd.service                     loaded active running Security Auditing Se>
  chronyd.service                    loaded active running NTP client/server
  crond.service                      loaded active running Command Scheduler
  dbus-broker.service                loaded active running D-Bus System Message>
  dracut-shutdown.service            loaded active exited  Restore /run/initram>
  fprintd.service                    loaded active running Fingerprint Authenti>

.....
.....

  systemd-vconsole-setup.service     loaded active exited  Setup Virtual Console
  user-runtime-dir@0.service         loaded active exited  User Runtime Directo>
  user@0.service                     loaded active running User Manager for UID>

LOAD   = Reflects whether the unit definition was properly loaded.
ACTIVE = The high-level unit activation state, i.e. generalization of SUB.
SUB    = The low-level unit activation state, values depend on unit type.
45 loaded units listed. Pass --all to see loaded but inactive units, too.
To show all installed unit files use 'systemctl list-unit-files'.

# 全サービスの一覧

[root@dlp ~]#

systemctl list-unit-files -t service

UNIT FILE                                  STATE           VENDOR PRESET
arp-ethers.service                         disabled        disabled
atd.service                                enabled         enabled
auditd.service                             enabled         enabled
autovt@.service                            alias           -
blk-availability.service                   disabled        disabled
bolt.service                               static          -
chrony-wait.service                        disabled        disabled
chronyd.service                            enabled         enabled

.....
.....

usb_modeswitch@.service                    static          -
user-runtime-dir@.service                  static          -
user@.service                              static          -

194 unit files listed.

[2]	不要なサービスを止めるには以下のようにします。例として、[nis-domainname] サービスを停止し、システムの起動時に自動的に起動しないように設定しています。

[root@dlp ~]#

systemctl stop nis-domainname

[root@dlp ~]#

systemctl disable nis-domainname

# 停止と無効化を同時に実行する場合は以下

[root@dlp ~]#

systemctl disable --now nis-domainname