初期設定 : サービスの設定2024/12/16

	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 execu>
  auditd.service                           loaded active running Security Audit>
  chronyd.service                          loaded active running NTP client/ser>
  crond.service                            loaded active running Command Schedu>
  dbus-broker.service                      loaded active running D-Bus System M>
  dracut-shutdown.service                  loaded active exited  Restore /run/i>
  firewalld.service                        loaded active running firewalld - dy>
  getty@tty1.service                       loaded active running Getty on tty1

.....
.....

  tuned.service                            loaded active running Dynamic System>
  user-runtime-dir@0.service               loaded active exited  User Runtime D>
  user@0.service                           loaded active running User Manager f>

Legend: LOAD   → Reflects whether the unit definition was properly loaded.
        ACTIVE → The high-level unit activation state, i.e. generalization of S>
        SUB    → The low-level unit activation state, values depend on unit typ>

44 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           PRESET
arp-ethers.service                           disabled        disabled
atd.service                                  enabled         enabled
audit-rules.service                          enabled         enabled
auditd.service                               enabled         enabled
autovt@.service                              alias           -
blk-availability.service                     disabled        disabled
bluetooth.service                            enabled         enabled
bolt.service                                 static          -
capsule@.service                             static          -
chrony-wait.service                          disabled        disabled
chronyd-restricted.service                   disabled        disabled
chronyd.service                              enabled         enabled

.....
.....

tuned.service                                enabled         enabled
udisks2.service                              enabled         enabled
user-runtime-dir@.service                    static          -
user@.service                                static          -

252 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