我找到了这个非常有用的答案起初我以为这是由于无人值守升级造成的，然后按照建议在这个答案中，但系统仍然关闭。
以下是提到的命令的部分输出，我不知道在实际更换硬件之前还能做什么。
非常感谢大家！
这是输出：last -x | head | tac
runlevel (to lvl 5) 4.15.0-128-gener Tue Jan 5 22:52 - 22:59 (00:06)
reboot system boot 4.15.0-128-gener Tue Jan 5 22:57 still running
runlevel (to lvl 5) 4.15.0-128-gener Tue Jan 5 22:59 - 00:50 (01:51)
reboot system boot 4.15.0-128-gener Wed Jan 6 00:49 still running
runlevel (to lvl 5) 4.15.0-128-gener Wed Jan 6 00:50 still running
user1 pts/1 192.168.1.20 Wed Jan 6 03:44 still logged in
user1 pts/0 :pts/1:S.0 Wed Jan 6 03:59 - 03:59 (00:00)
user1 pts/0 :pts/1:S.0 Wed Jan 6 03:59 - 04:09 (00:09)
user1 pts/0 :pts/1:S.0 Wed Jan 6 04:10 - 04:11 (00:00)
user1 pts/0 :pts/1:S.0 Wed Jan 6 04:43 - 05:14 (00:31)
这是
grep -iv ': starting\|kernel: .*: Power Button\|watching system buttons\|Stopped Cleaning Up\|Started Crash recovery kernel' /var/log/messages /var/log/syslog /var/log/apcupsd* | grep -iw 'recover[a-z]*\|power[a-z]*\|shut[a-z ]*down\|rsyslogd\|ups'
grep: /var/log/messages: No such file or directory
/var/log/syslog:Jan 5 18:07:56 medesvr1 kernel: [ 0.049508] ACPI: Power Resource [USBC] (on)
/var/log/syslog:Jan 5 18:07:56 medesvr1 kernel: [ 0.053135] ACPI: Power Resource [PLPE] (on)
/var/log/syslog:Jan 5 18:07:56 medesvr1 kernel: [ 0.053994] ACPI: Power Resource [PLPE] (on)
/var/log/syslog:Jan 5 18:07:56 medesvr1 kernel: [ 0.068250] ACPI: Power Resource [CLK0] (on)
/var/log/syslog:Jan 5 18:07:56 medesvr1 kernel: [ 0.068356] ACPI: Power Resource [CLK1] (on)
/var/log/syslog:Jan 5 18:07:56 medesvr1 kernel: [ 0.235790] pci 0000:01:00.1: D0 power state depends on 0000:01:00.0
/var/log/syslog:Jan 5 18:07:56 medesvr1 systemd[1]: Started Update UTMP about System Boot/Shutdown.
/var/log/syslog:Jan 5 18:07:56 medesvr1 apparmor[596]: Skipping profile in /etc/apparmor.d/disable: usr.sbin.rsyslogd
/var/log/syslog:Jan 5 18:07:56 medesvr1 dbus-daemon[900]: dbus[900]: Unknown group "power" in message bus configuration file
/var/log/syslog:Jan 5 18:07:56 medesvr1 kernel: [ 4.852026] raid6: using ssse3x2 recovery algorithm
/var/log/syslog:Jan 5 18:07:56 medesvr1 kernel: [ 5.518198] EXT4-fs (sdb2): INFO: recovery required on readonly filesystem
/var/log/syslog:Jan 5 18:07:56 medesvr1 kernel: [ 5.518208] EXT4-fs (sdb2): write access will be enabled during recovery
/var/log/syslog:Jan 5 18:07:56 medesvr1 kernel: [ 17.492117] EXT4-fs (sdb2): recovery complete
/var/log/syslog:Jan 5 18:07:56 medesvr1 rsyslogd: imuxsock: Acquired UNIX socket '/run/systemd/journal/syslog' (fd 3) from systemd. [v8.32.0]
/var/log/syslog:Jan 5 18:07:56 medesvr1 rsyslogd: rsyslogd's groupid changed to 106
/var/log/syslog:Jan 5 18:07:56 medesvr1 rsyslogd: rsyslogd's userid changed to 102
/var/log/syslog:Jan 5 18:07:56 medesvr1 rsyslogd: [origin software="rsyslogd" swVersion="8.32.0" x-pid="935" x-info="http://www.rsyslog.com"] start
/var/log/syslog:Jan 5 18:07:57 medesvr1 systemd[1]: Started Unattended Upgrades Shutdown.
/var/log/syslog:Jan 5 18:08:36 medesvr1 set-cpufreq[897]: Setting powersave scheduler for all CPUs
/var/log/syslog:Jan 5 18:08:41 medesvr1 systemd[1]: Started LXD - container startup/shutdown.
/var/log/syslog:Jan 5 22:52:16 medesvr1 systemd[1]: Started Update UTMP about System Boot/Shutdown.
/var/log/syslog:Jan 5 22:52:16 medesvr1 apparmor[599]: Skipping profile in /etc/apparmor.d/disable: usr.sbin.rsyslogd
/var/log/syslog:Jan 5 22:52:16 medesvr1 kernel: [ 0.049486] ACPI: Power Resource [USBC] (on)
/var/log/syslog:Jan 5 22:52:16 medesvr1 kernel: [ 0.053108] ACPI: Power Resource [PLPE] (on)
/var/log/syslog:Jan 5 22:52:16 medesvr1 kernel: [ 0.053967] ACPI: Power Resource [PLPE] (on)
/var/log/syslog:Jan 5 22:52:16 medesvr1 kernel: [ 0.068215] ACPI: Power Resource [CLK0] (on)
/var/log/syslog:Jan 5 22:52:16 medesvr1 kernel: [ 0.068321] ACPI: Power Resource [CLK1] (on)
/var/log/syslog:Jan 5 22:52:16 medesvr1 kernel: [ 0.235872] pci 0000:01:00.1: D0 power state depends on 0000:01:00.0
/var/log/syslog:Jan 5 22:52:16 medesvr1 kernel: [ 4.920040] raid6: using ssse3x2 recovery algorithm
/var/log/syslog:Jan 5 22:52:16 medesvr1 kernel: [ 5.576970] EXT4-fs (sdb2): INFO: recovery required on readonly filesystem
/var/log/syslog:Jan 5 22:52:16 medesvr1 kernel: [ 5.576980] EXT4-fs (sdb2): write access will be enabled during recovery
/var/log/syslog:Jan 5 22:52:16 medesvr1 kernel: [ 44.073736] EXT4-fs (sdb2): recovery complete
/var/log/syslog:Jan 5 22:52:16 medesvr1 dbus-daemon[905]: dbus[905]: Unknown group "power" in message bus configuration file
/var/log/syslog:Jan 5 22:52:16 medesvr1 systemd[1]: Started Unattended Upgrades Shutdown.
/var/log/syslog:Jan 5 22:52:16 medesvr1 set-cpufreq[985]: Setting powersave scheduler for all CPUs
/var/log/syslog:Jan 5 22:52:16 medesvr1 rsyslogd: imuxsock: Acquired UNIX socket '/run/systemd/journal/syslog' (fd 3) from systemd. [v8.32.0]
/var/log/syslog:Jan 5 22:52:16 medesvr1 rsyslogd: rsyslogd's groupid changed to 106
/var/log/syslog:Jan 5 22:52:16 medesvr1 rsyslogd: rsyslogd's userid changed to 102
/var/log/syslog:Jan 5 22:52:16 medesvr1 rsyslogd: [origin software="rsyslogd" swVersion="8.32.0" x-pid="890" x-info="http://www.rsyslog.com"] start
/var/log/syslog:Jan 5 22:52:29 medesvr1 systemd[1]: Started LXD - container startup/shutdown.
/var/log/syslog:Jan 5 22:58:22 medesvr1 systemd[1]: Started Update UTMP about System Boot/Shutdown.
/var/log/syslog:Jan 5 22:58:22 medesvr1 apparmor[600]: Skipping profile in /etc/apparmor.d/disable: usr.sbin.rsyslogd
/var/log/syslog:Jan 5 22:58:22 medesvr1 dbus-daemon[918]: dbus[918]: Unknown group "power" in message bus configuration file
/var/log/syslog:Jan 5 22:58:22 medesvr1 systemd[1]: Started Unattended Upgrades Shutdown.
/var/log/syslog:Jan 5 22:58:22 medesvr1 rsyslogd: imuxsock: Acquired UNIX socket '/run/systemd/journal/syslog' (fd 3) from systemd. [v8.32.0]
/var/log/syslog:Jan 5 22:58:22 medesvr1 rsyslogd: rsyslogd's groupid changed to 106
/var/log/syslog:Jan 5 22:58:22 medesvr1 rsyslogd: rsyslogd's userid changed to 102
/var/log/syslog:Jan 5 22:58:22 medesvr1 rsyslogd: [origin software="rsyslogd" swVersion="8.32.0" x-pid="967" x-info="http://www.rsyslog.com"] start
/var/log/syslog:Jan 5 22:58:22 medesvr1 kernel: [ 0.049489] ACPI: Power Resource [USBC] (on)
/var/log/syslog:Jan 5 22:58:22 medesvr1 kernel: [ 0.053111] ACPI: Power Resource [PLPE] (on)
/var/log/syslog:Jan 5 22:58:22 medesvr1 kernel: [ 0.053967] ACPI: Power Resource [PLPE] (on)
/var/log/syslog:Jan 5 22:58:22 medesvr1 kernel: [ 0.068203] ACPI: Power Resource [CLK0] (on)
/var/log/syslog:Jan 5 22:58:22 medesvr1 kernel: [ 0.068309] ACPI: Power Resource [CLK1] (on)
/var/log/syslog:Jan 5 22:58:22 medesvr1 kernel: [ 0.235732] pci 0000:01:00.1: D0 power state depends on 0000:01:00.0
/var/log/syslog:Jan 5 22:58:22 medesvr1 kernel: [ 4.540036] raid6: using ssse3x2 recovery algorithm
/var/log/syslog:Jan 5 22:58:22 medesvr1 kernel: [ 5.203817] EXT4-fs (sdb2): INFO: recovery required on readonly filesystem
/var/log/syslog:Jan 5 22:58:22 medesvr1 kernel: [ 5.203826] EXT4-fs (sdb2): write access will be enabled during recovery
/var/log/syslog:Jan 5 22:58:22 medesvr1 kernel: [ 36.208830] EXT4-fs (sdb2): recovery complete
/var/log/syslog:Jan 5 22:58:57 medesvr1 set-cpufreq[965]: Setting powersave scheduler for all CPUs
/var/log/syslog:Jan 5 22:59:03 medesvr1 systemd[1]: Started LXD - container startup/shutdown.
/var/log/syslog:Jan 6 00:49:58 medesvr1 systemd[1]: Started Update UTMP about System Boot/Shutdown.
/var/log/syslog:Jan 6 00:49:58 medesvr1 apparmor[593]: Skipping profile in /etc/apparmor.d/disable: usr.sbin.rsyslogd
/var/log/syslog:Jan 6 00:49:58 medesvr1 dbus-daemon[891]: dbus[891]: Unknown group "power" in message bus configuration file
/var/log/syslog:Jan 6 00:49:58 medesvr1 systemd[1]: Started Unattended Upgrades Shutdown.
/var/log/syslog:Jan 6 00:49:58 medesvr1 kernel: [ 0.049501] ACPI: Power Resource [USBC] (on)
/var/log/syslog:Jan 6 00:49:58 medesvr1 kernel: [ 0.053123] ACPI: Power Resource [PLPE] (on)
/var/log/syslog:Jan 6 00:49:58 medesvr1 kernel: [ 0.053983] ACPI: Power Resource [PLPE] (on)
/var/log/syslog:Jan 6 00:49:58 medesvr1 kernel: [ 0.068240] ACPI: Power Resource [CLK0] (on)
/var/log/syslog:Jan 6 00:49:58 medesvr1 kernel: [ 0.068346] ACPI: Power Resource [CLK1] (on)
/var/log/syslog:Jan 6 00:49:58 medesvr1 kernel: [ 0.235940] pci 0000:01:00.1: D0 power state depends on 0000:01:00.0
/var/log/syslog:Jan 6 00:49:58 medesvr1 kernel: [ 4.560044] raid6: using ssse3x2 recovery algorithm
/var/log/syslog:Jan 6 00:49:58 medesvr1 kernel: [ 5.188958] EXT4-fs (sdb2): INFO: recovery required on readonly filesystem
/var/log/syslog:Jan 6 00:49:58 medesvr1 kernel: [ 5.188969] EXT4-fs (sdb2): write access will be enabled during recovery
/var/log/syslog:Jan 6 00:49:58 medesvr1 kernel: [ 32.240760] EXT4-fs (sdb2): recovery complete
/var/log/syslog:Jan 6 00:49:58 medesvr1 rsyslogd: imuxsock: Acquired UNIX socket '/run/systemd/journal/syslog' (fd 3) from systemd. [v8.32.0]
/var/log/syslog:Jan 6 00:49:58 medesvr1 rsyslogd: rsyslogd's groupid changed to 106
/var/log/syslog:Jan 6 00:49:58 medesvr1 rsyslogd: rsyslogd's userid changed to 102
/var/log/syslog:Jan 6 00:49:58 medesvr1 rsyslogd: [origin software="rsyslogd" swVersion="8.32.0" x-pid="928" x-info="http://www.rsyslog.com"] start
grep: /var/log/apcupsd*: No such file or directory
/var/log/syslog:Jan 6 00:50:05 medesvr1 set-cpufreq[885]: Setting powersave scheduler for all CPUs
/var/log/syslog:Jan 6 00:50:28 medesvr1 systemd[1]: Started LXD - container startup/shutdown.