Всем привет!
Что имеется. Физический сервер в корпусе биг тауэр в дата-центре с кучей ферм.
ПО: Ubuntu 18.04.1 LTS
На сервере периодически возникают зависания. Происходит это ночью, ровно в 4:00. По началу я грешил на бэкапы, как раз начинающиеся в это время и перенёс их на дневное время. Сегодня проблема повторилась. Фрагмент записи в логах:
Apr 4 04:00:00 [nameofserver] systemd[1]: Stopping ACPI event daemon...
Apr 4 04:00:00 [nameofserver] systemd[1]: Closed Load/Save RF Kill Switch Status /dev/rfkill Watch.
Apr 4 04:00:00 [nameofserver] systemd[1]: Removed slice system-getty.slice.
Apr 4 04:00:00 [nameofserver] systemd[1]: Stopping Thunderbolt system service...
Apr 4 04:00:00 [nameofserver] systemd[1]: Stopping RealtimeKit Scheduling Policy Service...
Apr 4 04:00:00 [nameofserver] systemd[1]: Stopped Stop ureadahead data collection 45s after completed startup.
Apr 4 04:00:00 [nameofserver] systemd[1]: Stopped target Graphical Interface.
Apr 4 04:00:00 [nameofserver] systemd[1]: Stopping GNOME Display Manager...
Apr 4 04:00:00 [nameofserver] systemd[1]: Stopping Accounts Service...
Apr 4 04:00:00 [nameofserver] systemd[1]: Stopped target Multi-User System.
Apr 4 04:00:00 [nameofserver] systemd[1]: Stopping NoMachine Server daemon...
Apr 4 04:00:00 [nameofserver] gnome-shell[1427]: Connection to xwayland lost
Apr 4 04:00:00 [nameofserver] systemd[1]: Stopping LSB: Record successful boot for GRUB...
Apr 4 04:00:00 [nameofserver] systemd[1]: Stopping The PHP 7.2 FastCGI Process Manager...
Apr 4 04:00:00 [nameofserver] systemd[1]: Stopping irqbalance daemon...
Apr 4 04:00:00 [nameofserver] systemd[1]: Stopping Modem Manager...
Apr 4 04:00:00 [nameofserver] systemd[1]: Stopping LSB: Speech Dispatcher...
Apr 4 04:00:00 [nameofserver] systemd[1]: Stopping Tool to automatically collect and submit kernel crash signatures...
Apr 4 04:00:00 [nameofserver] systemd[1]: Stopped Wait until snapd is fully seeded.
Apr 4 04:00:00 [nameofserver] systemd[1]: Stopping Regular background program processing daemon...
Apr 4 04:00:00 [nameofserver] gnome-session[1389]: gnome-session-binary[1389]: WARNING: Application 'org.gnome.SettingsDaemon.Datetime.desktop' killed by signal 15
Apr 4 04:00:00 [nameofserver] gnome-session-binary[1389]: WARNING: Application 'org.gnome.SettingsDaemon.Datetime.desktop' killed by signal 15
Apr 4 04:00:00 [nameofserver] systemd[1]: Stopping LSB: MD monitoring daemon...
Apr 4 04:00:00 [nameofserver] gnome-session[1389]: gnome-session-binary[1389]: WARNING: Application 'org.gnome.SettingsDaemon.MediaKeys.desktop' killed by signal 15
Apr 4 04:00:00 [nameofserver] gnome-session[1389]: gnome-session-binary[1389]: WARNING: Application 'org.gnome.SettingsDaemon.Mouse.desktop' killed by signal 15
Apr 4 04:00:00 [nameofserver] gnome-session[1389]: gnome-session-binary[1389]: WARNING: Application 'org.gnome.SettingsDaemon.Power.desktop' killed by signal 15
Apr 4 04:00:00 [nameofserver] gnome-session[1389]: gnome-session-binary[1389]: WARNING: Application 'org.gnome.SettingsDaemon.PrintNotifications.desktop' killed by signal 15
Apr 4 04:00:00 [nameofserver] gnome-session[1389]: gnome-session-binary[1389]: WARNING: Application 'org.gnome.SettingsDaemon.Rfkill.desktop' killed by signal 15
Apr 4 04:00:00 [nameofserver] gnome-session[1389]: gnome-session-binary[1389]: WARNING: Application 'org.gnome.SettingsDaemon.ScreensaverProxy.desktop' killed by signal 15
Apr 4 04:00:00 [nameofserver] gnome-session[1389]: gnome-session-binary[1389]: WARNING: Application 'org.gnome.SettingsDaemon.Sharing.desktop' killed by signal 15
Apr 4 04:00:00 [nameofserver] gnome-session[1389]: gnome-session-binary[1389]: WARNING: Application 'org.gnome.SettingsDaemon.Smartcard.desktop' killed by signal 15
Apr 4 10:29:31 [nameofserver] systemd-modules-load[409]: Inserted module 'lp'
Apr 4 10:29:31 [nameofserver] systemd-modules-load[409]: Inserted module 'ppdev'
Apr 4 10:29:31 [nameofserver] kernel: [ 0.000000] Linux version 4.15.0-47-generic (buildd@lgw01-amd64-001) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #50-Ubuntu SMP Wed Mar 13 10:44:52 UTC 2019 (Ubuntu 4.15.0-47.50-generic 4.15.18)
Apr 4 10:29:31 [nameofserver] kernel: [ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-4.15.0-47-generic root=UUID=34c54636-090f-4da4-aeef-697fee2e66e0 ro quiet splash
В половине одиннадцатого сервер вручную включили в дата-центре.
Если кто-то сталкивался, подскажите, в какую сторону копать.
Правила форума
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--Aleksandru