Oops, j’ai eu le même cas après reboot, mais j’ai lancé apache manuellement. Voici les logs juste après :
$ journalctl --no-pager -u apache2
-- Reboot --
Dec 09 06:07:45 hostname.mondomaine.com systemd[1]: Starting The Apache HTTP Server...
Dec 09 06:07:45 hostname.mondomaine.com apachectl[568]: (99)Cannot assign requested address: AH00072: make_sock: could not bind to address 163.172.106.81:8443
Dec 09 06:07:45 hostname.mondomaine.com apachectl[568]: no listening sockets available, shutting down
Dec 09 06:07:45 hostname.mondomaine.com apachectl[568]: AH00015: Unable to open logs
Dec 09 06:07:45 hostname.mondomaine.com apachectl[533]: Action 'start' failed.
Dec 09 06:07:45 hostname.mondomaine.com apachectl[533]: The Apache error log may have more information.
Dec 09 06:07:45 hostname.mondomaine.com systemd[1]: apache2.service: Control process exited, code=exited, status=1/FAILURE
Dec 09 06:07:45 hostname.mondomaine.com systemd[1]: apache2.service: Failed with result 'exit-code'.
Dec 09 06:07:45 hostname.mondomaine.com systemd[1]: Failed to start The Apache HTTP Server.
Dec 09 06:08:50 hostname.mondomaine.com systemd[1]: Starting The Apache HTTP Server...
Dec 09 06:08:50 hostname.mondomaine.com systemd[1]: Started The Apache HTTP Server.
$ cat /var/log/apache2/error.log
[Wed Dec 09 06:08:50.942554 2020] [ssl:warn] [pid 38597:tid 139887643204672] AH01909: 163.172.106.81:443:0 server certificate does NOT include an ID which matches the server name
[Wed Dec 09 06:08:50.942740 2020] [suexec:notice] [pid 38597:tid 139887643204672] AH01232: suEXEC mechanism enabled (wrapper: /usr/lib/apache2/suexec)
[Wed Dec 09 06:08:50.949897 2020] [ssl:warn] [pid 38603:tid 139887643204672] AH01909: 163.172.106.81:443:0 server certificate does NOT include an ID which matches the server name
[Wed Dec 09 06:08:50.950631 2020] [mpm_event:notice] [pid 38603:tid 139887643204672] AH00489: Apache/2.4.46 (Ubuntu) mod_fcgid/2.3.9 OpenSSL/1.1.1g configured -- resuming normal operations
[Wed Dec 09 06:08:50.950654 2020] [core:notice] [pid 38603:tid 139887643204672] AH00094: Command line: '/usr/sbin/apache2'
systemctl status --no-pager apache2
● apache2.service - The Apache HTTP Server
Loaded: loaded (/lib/systemd/system/apache2.service; enabled; vendor preset: enabled)
Active: active (running) since Wed 2020-12-09 06:08:50 CET; 7min ago
Docs: https://httpd.apache.org/docs/2.4/
Process: 38589 ExecStart=/usr/sbin/apachectl start (code=exited, status=0/SUCCESS)
Main PID: 38603
Tasks: 56 (limit: 38213)
Memory: 10.6M
CGroup: /system.slice/apache2.service
├─38603 /usr/sbin/apache2 -k start
├─38605 /usr/sbin/apache2 -k start
├─38607 /usr/sbin/apache2 -k start
└─38608 /usr/sbin/apache2 -k start
Dec 09 06:08:50 hostname.mondomaine.com systemd[1]: Starting The Apache HTTP Server...
Dec 09 06:08:50 hostname.mondomaine.com systemd[1]: Started The Apache HTTP Server.
Ça ne me semble guère loquace…
Une idée ?