sudo systemctl reload apache2：
此错误的结果：
apache2.service is not active, cannot reload.
systemctl restart apache2.service：
此错误的结果：
Job for apache2.service failed because the control process exited with error code. See "systemctl status apache2.service" and "journalctl -xe" for details.
sudo service --status-all | grep apache
结果如下：
[ - ] apache-htcacheclean
[ - ] apache2
system status apache2.service：apache2.service - The Apache HTTP Server Loaded: loaded (/lib/systemd/system/apache2.service; enabled; vendor pres> Active: failed (Result: exit-code) since Thu 2021-05-27 10:19:36 CEST; 2m> Docs: https://httpd.apache.org/docs/2.4/ Process: 20030 ExecStart=/usr/sbin/apachectl start (code=exited, status=1/> lines 1-5/5 (END)...skipping... ● apache2.service - The Apache HTTP Server Loaded: loaded (/lib/systemd/system/apache2.service; enabled; vendor preset: enabled) Active: failed (Result: exit-code) since Thu 2021-05-27 10:19:36 CEST; 2min 7s ago Docs: https://httpd.apache.org/docs/2.4/ Process: 20030 ExecStart=/usr/sbin/apachectl start (code=exited, status=1/FAILURE) ● apache2.service - The Apache HTTP Server Loaded: loaded (/lib/systemd/system/apache2.service; enabled; vendor preset: enabled) Active: failed (Result: exit-code) since Thu 2021-05-27 10:19:36 CEST; 2min 7s ago Docs: https://httpd.apache.org/docs/2.4/ Process: 20030 ExecStart=/usr/sbin/apachectl start (code=exited, status=1/FAILURE)journalctl -xe：
-- The job identifier is 579.
Maj 27 10:06:49 Marinario-Ubuntu systemd[2394]: gnome-launched-org.gnome.Term>
-- Subject: Unit succeeded
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- The unit UNIT has successfully entered the 'dead' state.
Maj 27 10:07:00 Marinario-Ubuntu sudo[18914]: pam_unix(sudo:auth): Couldn't o>
Maj 27 10:07:02 Marinario-Ubuntu sudo[18914]: pam_unix(sudo:auth): Couldn't o>
Maj 27 10:11:23 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticationAgent>
Maj 27 10:15:19 Marinario-Ubuntu nautilus[12393]: Called "net usershare info">
Maj 27 10:15:33 Marinario-Ubuntu nautilus[12393]: Called "net usershare info">
Maj 27 10:15:47 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticationAgent>
Maj 27 10:15:50 Marinario-Ubuntu pkexec[19704]: pam_unix(polkit-1:session): s>
Maj 27 10:15:51 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticationAgent>
Maj 27 10:15:57 Marinario-Ubuntu dbus-daemon[2409]: [session uid=1001 pid=240>
Maj 27 10:15:57 Marinario-Ubuntu dbus-daemon[2409]: [session uid=1001 pid=240>
Maj 27 10:15:58 Marinario-Ubuntu gedit[19725]: Loading metadata failed: The s>
Maj 27 10:15:58 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticationAgent>
Maj 27 10:19:33 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticationAgent>
lines 2234-2254/2254 (END)
--
-- The job identifier is 579.
Maj 27 10:06:49 Marinario-Ubuntu systemd[2394]: gnome-launched-org.gnome.Terminal.desktop-18859.scope: Succeeded.
-- Subject: Unit succeeded
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- The unit UNIT has successfully entered the 'dead' state.
Maj 27 10:07:00 Marinario-Ubuntu sudo[18914]: pam_unix(sudo:auth): Couldn't open /etc/securetty: No such file or directory
Maj 27 10:07:02 Marinario-Ubuntu sudo[18914]: pam_unix(sudo:auth): Couldn't open /etc/securetty: No such file or directory
Maj 27 10:11:23 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticationAgent: Received 2identities that can be used for authentication. Only considering one.
Maj 27 10:15:19 Marinario-Ubuntu nautilus[12393]: Called "net usershare info" but it failed: Failed to execute child process “net” (No such file or directory)
Maj 27 10:15:33 Marinario-Ubuntu nautilus[12393]: Called "net usershare info" but it failed: Failed to execute child process “net” (No such file or directory)
Maj 27 10:15:47 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticationAgent: Received 2identities that can be used for authentication. Only considering one.
Maj 27 10:15:50 Marinario-Ubuntu pkexec[19704]: pam_unix(polkit-1:session): session opened for user root by (uid=1001)
Maj 27 10:15:51 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticationAgent: Received 2identities that can be used for authentication. Only considering one.
Maj 27 10:15:57 Marinario-Ubuntu dbus-daemon[2409]: [session uid=1001 pid=2409] Activating service name='org.gnome.gedit' requested by ':1.174' (uid=1001 pid=12393 comm="/usr/bin/nautilus --gapplication-servi>
Maj 27 10:15:57 Marinario-Ubuntu dbus-daemon[2409]: [session uid=1001 pid=2409] Successfully activated service 'org.gnome.gedit'
Maj 27 10:15:58 Marinario-Ubuntu gedit[19725]: Loading metadata failed: The specified location is not mounted
Maj 27 10:15:58 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticationAgent: Received 2identities that can be used for authentication. Only considering one.
Maj 27 10:19:33 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticationAgent: Received 2identities that can be used for authentication. Only considering one.
~
lines 2234-2254/2254 (END)
--
-- The job identifier is 579.
Maj 27 10:06:49 Marinario-Ubuntu systemd[2394]: gnome-launched-org.gnome.Terminal.desktop-18859.scope: Succeeded.
-- Subject: Unit succeeded
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- The unit UNIT has successfully entered the 'dead' state.
Maj 27 10:07:00 Marinario-Ubuntu sudo[18914]: pam_unix(sudo:auth): Couldn't open /etc/securetty: No such file or directory
Maj 27 10:07:02 Marinario-Ubuntu sudo[18914]: pam_unix(sudo:auth): Couldn't open /etc/securetty: No such file or directory
Maj 27 10:11:23 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticationAgent: Received 2identities that can be used for authentication. Only considering one.
Maj 27 10:15:19 Marinario-Ubuntu nautilus[12393]: Called "net usershare info" but it failed: Failed to execute child process “net” (No such file or directory)
Maj 27 10:15:33 Marinario-Ubuntu nautilus[12393]: Called "net usershare info" but it failed: Failed to execute child process “net” (No such file or directory)
Maj 27 10:15:47 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticationAgent: Received 2identities that can be used for authentication. Only considering one.
Maj 27 10:15:50 Marinario-Ubuntu pkexec[19704]: pam_unix(polkit-1:session): session opened for user root by (uid=1001)
Maj 27 10:15:51 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticationAgent: Received 2identities that can be used for authentication. Only considering one.
Maj 27 10:15:57 Marinario-Ubuntu dbus-daemon[2409]: [session uid=1001 pid=2409] Activating service name='org.gnome.gedit' requested by ':1.174' (uid=1001 pid=12393 comm="/usr/bin/nautilus --gapplication>
Maj 27 10:15:57 Marinario-Ubuntu dbus-daemon[2409]: [session uid=1001 pid=2409] Successfully activated service 'org.gnome.gedit'
Maj 27 10:15:58 Marinario-Ubuntu gedit[19725]: Loading metadata failed: The specified location is not mounted
Maj 27 10:15:58 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticationAgent: Received 2identities that can be used for authentication. Only considering one.
Maj 27 10:19:33 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticationAgent: Received 2identities that can be used for authentication. Only considering one.
~~
~
lines 2234-2254/2254 (END)
--
-- The job identifier is 579.
Maj 27 10:06:49 Marinario-Ubuntu systemd[2394]: gnome-launched-org.gnom>
-- Subject: Unit succeeded
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- The unit UNIT has successfully entered the 'dead' state.
Maj 27 10:07:00 Marinario-Ubuntu sudo[18914]: pam_unix(sudo:auth): Coul>
Maj 27 10:07:02 Marinario-Ubuntu sudo[18914]: pam_unix(sudo:auth): Coul>
Maj 27 10:11:23 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticatio>
Maj 27 10:15:19 Marinario-Ubuntu nautilus[12393]: Called "net usershare>
Maj 27 10:15:33 Marinario-Ubuntu nautilus[12393]: Called "net usershare>
Maj 27 10:15:47 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticatio>
Maj 27 10:15:50 Marinario-Ubuntu pkexec[19704]: pam_unix(polkit-1:sessi>
Maj 27 10:15:51 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticatio>
Maj 27 10:15:57 Marinario-Ubuntu dbus-daemon[2409]: [session uid=1001 p>
Maj 27 10:15:57 Marinario-Ubuntu dbus-daemon[2409]: [session uid=1001 p>
lines 2234-2251/2254 100%
--
-- The job identifier is 579.
Maj 27 10:06:49 Marinario-Ubuntu systemd[2394]: gnome-launched-org.gnome.Ter>
-- Subject: Unit succeeded
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- The unit UNIT has successfully entered the 'dead' state.
Maj 27 10:07:00 Marinario-Ubuntu sudo[18914]: pam_unix(sudo:auth): Couldn't >
Maj 27 10:07:02 Marinario-Ubuntu sudo[18914]: pam_unix(sudo:auth): Couldn't >
Maj 27 10:11:23 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticationAgen>
Maj 27 10:15:19 Marinario-Ubuntu nautilus[12393]: Called "net usershare info>
Maj 27 10:15:33 Marinario-Ubuntu nautilus[12393]: Called "net usershare info>
Maj 27 10:15:47 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticationAgen>
Maj 27 10:15:50 Marinario-Ubuntu pkexec[19704]: pam_unix(polkit-1:session): >
Maj 27 10:15:51 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticationAgen>
Maj 27 10:15:57 Marinario-Ubuntu dbus-daemon[2409]: [session uid=1001 pid=24>
Maj 27 10:15:57 Marinario-Ubuntu dbus-daemon[2409]: [session uid=1001 pid=24>
Maj 27 10:15:58 Marinario-Ubuntu gedit[19725]: Loading metadata failed: The >
Maj 27 10:15:58 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticationAgen>
lines 2234-2253/2254 100%
--
-- The job identifier is 579.
Maj 27 10:06:49 Marinario-Ubuntu systemd[2394]: gnome-launched-org.gnome.Terminal.desktop-18859.scope: Succeeded.
-- Subject: Unit succeeded
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- The unit UNIT has successfully entered the 'dead' state.
Maj 27 10:07:00 Marinario-Ubuntu sudo[18914]: pam_unix(sudo:auth): Couldn't open /etc/securetty: No such file or directory
Maj 27 10:07:02 Marinario-Ubuntu sudo[18914]: pam_unix(sudo:auth): Couldn't open /etc/securetty: No such file or directory
Maj 27 10:11:23 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticationAgent: Received 2identities that can be used for authentication. Only considering one.
Maj 27 10:15:19 Marinario-Ubuntu nautilus[12393]: Called "net usershare info" but it failed: Failed to execute child process “net” (No such file or directory)
Maj 27 10:15:33 Marinario-Ubuntu nautilus[12393]: Called "net usershare info" but it failed: Failed to execute child process “net” (No such file or directory)
Maj 27 10:15:47 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticationAgent: Received 2identities that can be used for authentication. Only considering one.
Maj 27 10:15:50 Marinario-Ubuntu pkexec[19704]: pam_unix(polkit-1:session): session opened for user root by (uid=1001)
Maj 27 10:15:51 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticationAgent: Received 2identities that can be used for authentication. Only considering one.
Maj 27 10:15:57 Marinario-Ubuntu dbus-daemon[2409]: [session uid=1001 pid=2409] Activating service name='org.gnome.gedit' requested by ':1.174' (uid=1001 pid=12393 comm="/usr/bin/nautilus --gapplication-servi>
Maj 27 10:15:57 Marinario-Ubuntu dbus-daemon[2409]: [session uid=1001 pid=2409] Successfully activated service 'org.gnome.gedit'
Maj 27 10:15:58 Marinario-Ubuntu gedit[19725]: Loading metadata failed: The specified location is not mounted
Maj 27 10:15:58 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticationAgent: Received 2identities that can be used for authentication. Only considering one.
Maj 27 10:19:33 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticationAgent: Received 2identities that can be used for authentication. Only considering one.
~
lines 2234-2254/2254 (END)
--
-- The job identifier is 579.
Maj 27 10:06:49 Marinario-Ubuntu systemd[2394]: gnome-launched-org.gnome.Terminal.desktop-18859.scope: Succeeded.
-- Subject: Unit succeeded
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- The unit UNIT has successfully entered the 'dead' state.
Maj 27 10:07:00 Marinario-Ubuntu sudo[18914]: pam_unix(sudo:auth): Couldn't open /etc/securetty: No such file or directory
Maj 27 10:07:02 Marinario-Ubuntu sudo[18914]: pam_unix(sudo:auth): Couldn't open /etc/securetty: No such file or directory
Maj 27 10:11:23 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticationAgent: Received 2identities that can be used for authentication. Only considering one.
Maj 27 10:15:19 Marinario-Ubuntu nautilus[12393]: Called "net usershare info" but it failed: Failed to execute child process “net” (No such file or directory)
Maj 27 10:15:33 Marinario-Ubuntu nautilus[12393]: Called "net usershare info" but it failed: Failed to execute child process “net” (No such file or directory)
Maj 27 10:15:47 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticationAgent: Received 2identities that can be used for authentication. Only considering one.
Maj 27 10:15:50 Marinario-Ubuntu pkexec[19704]: pam_unix(polkit-1:session): session opened for user root by (uid=1001)
Maj 27 10:15:51 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticationAgent: Received 2identities that can be used for authentication. Only considering one.
Maj 27 10:15:57 Marinario-Ubuntu dbus-daemon[2409]: [session uid=1001 pid=2409] Activating service name='org.gnome.gedit' requested by ':1.174' (uid=1001 pid=12393 comm="/usr/bin/nautilus --gapplication>
Maj 27 10:15:57 Marinario-Ubuntu dbus-daemon[2409]: [session uid=1001 pid=2409] Successfully activated service 'org.gnome.gedit'
Maj 27 10:15:58 Marinario-Ubuntu gedit[19725]: Loading metadata failed: The specified location is not mounted
Maj 27 10:15:58 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticationAgent: Received 2identities that can be used for authentication. Only considering one.
Maj 27 10:19:33 Marinario-Ubuntu gnome-shell[2641]: polkitAuthenticationAgent: Received 2identities that can be used for authentication. Only considering one.
~
有人能帮助我吗？谢谢！
答案1
我去检查了端口 80 上是否有其他服务/服务器在运行：
sudo netstat -tulpn | grep :80
对我来说，情况确实lighttpd如此，所以我必须停止它sudo service lighttpd stop。
然后我启动了 apache2，sudo service apache2 start没有任何问题。
这就是我做到的方法！