Server unreachable after updates

Support
1

Hello mates,
I’ll start by saying that I’m not a PRO with the IT side.
For a few weeks I have been monitoring an AlmaLinux server that suddenly becomes unreachable.
tonight he did it again and now I want to understand the problem.
looking through the logs I saw these lines.

Jun  7 03:00:01 ##servername_hidden## systemd[1]: Started Session 2100 of user psaadm.
Jun  7 03:00:01 ##servername_hidden## systemd[1]: Started Session 2101 of user psaadm.
Jun  7 03:00:01 ##servername_hidden## systemd[1]: session-2101.scope: Succeeded.
Jun  7 03:01:01 ##servername_hidden## systemd[1]: Started Plesk task: Hourly Maintenance: ReportTrialAgreement (task=23095 process=23095 trace=268074:66625bcd6cfb3).
Jun  7 03:01:01 ##servername_hidden## systemd[1]: run-plesk-task-23095.service: Succeeded.
Jun  7 03:01:01 ##servername_hidden## systemd[1]: Stopped Plesk task: Hourly Maintenance: ReportTrialAgreement (task=23095 process=23095 trace=268074:66625bcd6cfb3).
Jun  7 03:01:01 ##servername_hidden## systemd[1]: Started Plesk task: Hourly Maintenance: ReportProductAgreement (task=23096 process=23096 trace=268074:66625bcd6cfb3).
Jun  7 03:01:01 ##servername_hidden## systemd[1]: run-plesk-task-23096.service: Succeeded.
Jun  7 03:01:01 ##servername_hidden## systemd[1]: Stopped Plesk task: Hourly Maintenance: ReportProductAgreement (task=23096 process=23096 trace=268074:66625bcd6cfb3).
Jun  7 03:01:01 ##servername_hidden## systemd[1]: Started Plesk task: Hourly Maintenance: AutoresponderEndDate (task=23097 process=23097 trace=268074:66625bcd6cfb3).
Jun  7 03:01:01 ##servername_hidden## systemd[1]: run-plesk-task-23097.service: Succeeded.
Jun  7 03:01:01 ##servername_hidden## systemd[1]: Stopped Plesk task: Hourly Maintenance: AutoresponderEndDate (task=23097 process=23097 trace=268074:66625bcd6cfb3).
Jun  7 03:01:02 ##servername_hidden## systemd[1]: Started Plesk task: Hourly Maintenance: UpgradePanel (task=23098 process=23098 trace=268074:66625bcd6cfb3).
Jun  7 03:01:02 ##servername_hidden## systemd[1]: run-plesk-task-23098.service: Succeeded.
Jun  7 03:01:02 ##servername_hidden## systemd[1]: Stopped Plesk task: Hourly Maintenance: UpgradePanel (task=23098 process=23098 trace=268074:66625bcd6cfb3).
Jun  7 03:02:55 ##servername_hidden## named[1141]: client @0x7fe58804c720 91.211.90.114#50663 (##servername_hidden##): query (cache) '##servername_hidden##/ANY/IN' denied
Jun  7 03:07:01 ##servername_hidden## systemd[1]: Started Session 2102 of user psaadm.
Jun  7 03:07:01 ##servername_hidden## systemd[1]: Started Session 2103 of user psaadm.
Jun  7 03:07:02 ##servername_hidden## systemd[1]: session-2102.scope: Succeeded.
Jun  7 03:07:02 ##servername_hidden## systemd[1]: session-2103.scope: Succeeded.
Jun  7 03:09:01 ##servername_hidden## systemd[1]: Started Session 2104 of user psaadm.
Jun  7 03:09:02 ##servername_hidden## systemd[1]: session-2104.scope: Succeeded.
Jun  7 03:09:46 ##servername_hidden## systemd[1]: session-2100.scope: Succeeded.
Jun  7 03:10:01 ##servername_hidden## systemd[1]: Started Session 2105 of user psaadm.
Jun  7 03:11:01 ##servername_hidden## systemd[1]: Started Session 2106 of user psaadm.
Jun  7 03:11:01 ##servername_hidden## systemd[1]: session-2106.scope: Succeeded.
Jun  7 03:19:01 ##servername_hidden## systemd[1]: Started Session 2107 of user psaadm.
Jun  7 03:19:01 ##servername_hidden## systemd[1]: session-2107.scope: Succeeded.
Jun  7 03:19:46 ##servername_hidden## systemd[1]: session-2105.scope: Succeeded.
Jun  7 03:20:01 ##servername_hidden## systemd[1]: Started Session 2108 of user psaadm.
Jun  7 03:21:42 ##servername_hidden## named[1141]: client @0x7fe58804c720 193.32.162.76#4455 (census.gov): query (cache) 'census.gov/ANY/IN' denied
Jun  7 03:22:01 ##servername_hidden## systemd[1]: Started Session 2109 of user psaadm.
Jun  7 03:22:01 ##servername_hidden## systemd[1]: session-2109.scope: Succeeded.
Jun  7 03:24:01 ##servername_hidden## systemd[1]: Started Session 2110 of user psaadm.
Jun  7 03:24:01 ##servername_hidden## systemd[1]: session-2110.scope: Succeeded.
Jun  7 03:29:01 ##servername_hidden## systemd[1]: Started Session 2111 of user psaadm.
Jun  7 03:29:01 ##servername_hidden## systemd[1]: session-2111.scope: Succeeded.
Jun  7 03:29:46 ##servername_hidden## systemd[1]: session-2108.scope: Succeeded.
Jun  7 03:30:01 ##servername_hidden## systemd[1]: Started Session 2112 of user psaadm.
Jun  7 03:33:43 ##servername_hidden## named[1141]: client @0x7fe58804c720 193.32.162.76#4444 (census.gov): query (cache) 'census.gov/ANY/IN' denied
Jun  7 03:37:01 ##servername_hidden## systemd[1]: Started Session 2113 of user psaadm.
Jun  7 03:37:02 ##servername_hidden## systemd[1]: session-2113.scope: Succeeded.
Jun  7 03:39:01 ##servername_hidden## systemd[1]: Started Session 2114 of user psaadm.
Jun  7 03:39:01 ##servername_hidden## systemd[1]: session-2114.scope: Succeeded.
Jun  7 03:39:46 ##servername_hidden## systemd[1]: session-2112.scope: Succeeded.
Jun  7 03:40:01 ##servername_hidden## systemd[1]: Started Session 2115 of user psaadm.
Jun  7 03:47:01 ##servername_hidden## systemd[1]: Started Session 2116 of user psaadm.
Jun  7 03:47:01 ##servername_hidden## systemd[1]: session-2116.scope: Succeeded.
Jun  7 03:49:01 ##servername_hidden## systemd[1]: Started Plesk task: Daily Maintenance: CheckForUpdates (task=23099 process=23099 trace=269610:6662670d70b8f).
Jun  7 03:49:01 ##servername_hidden## systemd[1]: Started Session 2117 of user psaadm.
Jun  7 03:49:02 ##servername_hidden## systemd[1]: session-2117.scope: Succeeded.
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: Dr.Web Updater ($Id: fbb3ca1734c5e75ae3008acef02c2f1032ac44cf $) started ...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: You appear to use some linux distro, but there is no lsb_release command accessible in your system. Either your PATH environment variable is screwed up (due to security considerations, or whatever), or your linux distribution does not fully support Linux Standard Base (proposed by Free Standards Group). It is probably okay. Falling back to another way of discovering the name of your linux distro.
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: You appear to use RedHat Linux (the file '/etc/redhat-release' exists, which is typical for RedHat Linux). Trying to discover the exact version and hardware architecture of your linux system.
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: Generated file path: /var/drweb/updater/agent/
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: Generated file path: /var/drweb/updater/drweb/
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: Trying to load last update cache...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: Last update cache has been loaded.
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: Loading cache data...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: Cache data has been loaded...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/custom.drl: no such file or no permissions for reading custom URL list
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: try using Dr.Web URL list (/var/drweb/bases/update.drl)
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: no custom update servers
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: main update servers:
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]:    http://update.geo.drweb.com/plesk/1100/unix
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: no plugins' URLs found
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: Trying to check if updates are frozen...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: Generated file path: /var/drweb/updater/drweb/lock
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: Updates are not frozen.
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: Attempting to fetch http://update.geo.drweb.com/plesk/1100/unix/drweb32.lst ...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: request with 384 bytes length was sent to update.geo.drweb.com
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: update.geo.drweb.com return 200 OK
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/drw11000.vdb - drw11000.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/drw11001.vdb - drw11001.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/drw11002.vdb - drw11002.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/drw11003.vdb - drw11003.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/drw11004.vdb - drw11004.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/drw11005.vdb - drw11005.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/lib/drweb32.dll -  drweb32.dll with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/drwebase.vdb - drwebase.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/drwnasty.vdb - drwnasty.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/drwrisky.vdb - drwrisky.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11000.vdb - dwm11000.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11001.vdb - dwm11001.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11002.vdb - dwm11002.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11003.vdb - dwm11003.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11004.vdb - dwm11004.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11005.vdb - dwm11005.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11006.vdb - dwm11006.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11007.vdb - dwm11007.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11008.vdb - dwm11008.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11009.vdb - dwm11009.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11010.vdb - dwm11010.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11011.vdb - dwm11011.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11012.vdb - dwm11012.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11013.vdb - dwm11013.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11014.vdb - dwm11014.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11015.vdb - dwm11015.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11016.vdb - dwm11016.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11017.vdb - dwm11017.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11018.vdb - dwm11018.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11019.vdb - dwm11019.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11020.vdb - dwm11020.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11021.vdb - dwm11021.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11022.vdb - dwm11022.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11023.vdb - dwm11023.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11024.vdb - dwm11024.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11025.vdb - dwm11025.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11026.vdb - dwm11026.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11027.vdb - dwm11027.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11028.vdb - dwm11028.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11029.vdb - dwm11029.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11030.vdb - dwm11030.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11031.vdb - dwm11031.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11032.vdb - dwm11032.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11033.vdb - dwm11033.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11034.vdb - dwm11034.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11035.vdb - dwm11035.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11036.vdb - dwm11036.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11037.vdb - dwm11037.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11038.vdb - dwm11038.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11039.vdb - dwm11039.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11040.vdb - dwm11040.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwm11041.vdb - dwm11041.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwn11000.vdb - dwn11000.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwn11001.vdb - dwn11001.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwn11002.vdb - dwn11002.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwn11003.vdb - dwn11003.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwn11004.vdb - dwn11004.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwn11005.vdb - dwn11005.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwn11006.vdb - dwn11006.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwn11007.vdb - dwn11007.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwn11008.vdb - dwn11008.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwn11009.vdb - dwn11009.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwn11010.vdb - dwn11010.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwn11011.vdb - dwn11011.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwn11012.vdb - dwn11012.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwp11000.vdb - dwp11000.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwr11000.vdb - dwr11000.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwr11001.vdb - dwr11001.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwr11002.vdb - dwr11002.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwr11003.vdb - dwr11003.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwr11004.vdb - dwr11004.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwr11005.vdb - dwr11005.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwr11006.vdb - dwr11006.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/dwr11007.vdb - dwr11007.vdb with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: /var/drweb/bases/update.drl -   update.drl with such check sum already exists, skipped...
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: request with 385 bytes length was sent to update.geo.drweb.com
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: update.geo.drweb.com return 404 Not Found
Jun  7 03:49:02 ##servername_hidden## update.pl[270008]: File not found (softfail), will try other variant if any
Jun  7 03:49:03 ##servername_hidden## update.pl[270008]: request with 380 bytes length was sent to update.geo.drweb.com
Jun  7 03:49:03 ##servername_hidden## update.pl[270008]: update.geo.drweb.com return 200 OK
Jun  7 03:49:11 ##servername_hidden## systemd[1]: run-plesk-task-23099.service: Succeeded.
Jun  7 03:49:11 ##servername_hidden## systemd[1]: Stopped Plesk task: Daily Maintenance: CheckForUpdates (task=23099 process=23099 trace=269610:6662670d70b8f).
Jun  7 03:49:11 ##servername_hidden## systemd[1]: Started Plesk task: Daily Maintenance: InstallUpdates (task=23100 process=23100 trace=269610:6662670d70b8f).
Jun  7 03:49:11 ##servername_hidden## systemd[1]: run-plesk-task-23100.service: Succeeded.
Jun  7 03:49:11 ##servername_hidden## systemd[1]: Stopped Plesk task: Daily Maintenance: InstallUpdates (task=23100 process=23100 trace=269610:6662670d70b8f).
Jun  7 03:49:11 ##servername_hidden## systemd[1]: Started Plesk task: Daily Maintenance: InstallSystemPackageUpdates (task=23101 process=23101 trace=269610:6662670d70b8f).
Jun  7 03:49:37 ##servername_hidden## firewalld[910]: WARNING: AllowZoneDrifting is enabled. This is considered an insecure configuration option. It will be removed in a future release. Please consider disabling it now.
Jun  7 03:49:38 ##servername_hidden## systemd[1]: Stopping Cockpit Web Service Socket.
Jun  7 03:49:38 ##servername_hidden## systemd[1]: cockpit.socket: Succeeded.
Jun  7 03:49:38 ##servername_hidden## systemd[1]: Closed Cockpit Web Service Socket.
Jun  7 03:49:38 ##servername_hidden## systemd[1]: Starting Cockpit Web Service Socket.
Jun  7 03:49:38 ##servername_hidden## systemd[1]: Listening on Cockpit Web Service Socket.
Jun  7 03:49:38 ##servername_hidden## systemd[1]: Starting Cockpit motd updater service...
Jun  7 03:49:38 ##servername_hidden## systemd[1]: cockpit-motd.service: Succeeded.
Jun  7 03:49:38 ##servername_hidden## systemd[1]: Started Cockpit motd updater service.
Jun  7 03:49:39 ##servername_hidden## systemd[1]: Started /usr/bin/systemctl start man-db-cache-update.
Jun  7 03:49:39 ##servername_hidden## systemd[1]: Starting man-db-cache-update.service...
Jun  7 03:49:39 ##servername_hidden## systemd[1]: Reloading.
Jun  7 03:49:39 ##servername_hidden## systemd[1]: /usr/lib/systemd/system/grafana-server.service:28: Unknown lvalue 'ProtectClock' in section 'Service'
Jun  7 03:49:39 ##servername_hidden## systemd[1]: /usr/lib/systemd/system/grafana-server.service:31: Unknown lvalue 'ProtectHostname' in section 'Service'
Jun  7 03:49:39 ##servername_hidden## systemd[1]: /usr/lib/systemd/system/grafana-server.service:32: Unknown lvalue 'ProtectKernelLogs' in section 'Service'
Jun  7 03:49:39 ##servername_hidden## systemd[1]: /usr/lib/systemd/system/grafana-server.service:35: Unknown lvalue 'ProtectProc' in section 'Service'
Jun  7 03:49:39 ##servername_hidden## systemd[1]: Started /usr/bin/systemctl start man-db-cache-update.
Jun  7 03:49:40 ##servername_hidden## systemd[1]: man-db-cache-update.service: Succeeded.
Jun  7 03:49:40 ##servername_hidden## systemd[1]: Started man-db-cache-update.service.
Jun  7 03:49:40 ##servername_hidden## systemd[1]: run-rea09abe8136648ae8f1a4ab1ac245b95.service: Succeeded.
Jun  7 03:49:40 ##servername_hidden## systemd[1]: run-r4d0d82a8c1ba4ae3b96d5c646c5dc98c.service: Succeeded.
Jun  7 03:49:42 ##servername_hidden## systemd[1]: run-plesk-task-23101.service: Succeeded.
Jun  7 03:49:42 ##servername_hidden## systemd[1]: Stopped Plesk task: Daily Maintenance: InstallSystemPackageUpdates (task=23101 process=23101 trace=269610:6662670d70b8f).
Jun  7 03:49:42 ##servername_hidden## systemd[1]: Started Plesk task: Daily Maintenance: UpdateKeys (task=23102 process=23102 trace=269610:6662670d70b8f).
Jun  7 03:49:46 ##servername_hidden## systemd[1]: session-2115.scope: Succeeded.
Jun  7 03:50:01 ##servername_hidden## systemd[1]: Started Session 2118 of user psaadm.
Jun  7 03:50:33 ##servername_hidden## update.pl[270008]: can not read file ##://update.geo.drweb.com/plesk/1100/unix/drw11006.vdb
Jun  7 03:50:33 ##servername_hidden## update.pl[270008]: Can not resolve update.geo.drweb.com to IP address
Jun  7 03:50:33 ##servername_hidden## update.pl[270008]: can not download drw11006.vdb
Jun  7 03:50:33 ##servername_hidden## update.pl[270008]: failed to download new/updated files
Jun  7 03:50:33 ##servername_hidden## update.pl[270008]: failed to download files
Jun  7 03:50:33 ##servername_hidden## update.pl[270008]: Saving last update cache data...
Jun  7 03:50:33 ##servername_hidden## update.pl[270008]: Last update cache data has been saved.
Jun  7 03:50:33 ##servername_hidden## update.pl[270008]: Saving cache data...
Jun  7 03:50:33 ##servername_hidden## update.pl[270008]: Cache data has been saved.
Jun  7 03:50:33 ##servername_hidden## update.pl[270008]: Errors occurred while updating!
Jun  7 03:50:33 ##servername_hidden## update.pl[270008]: Socket path is /var/drweb/run/updateSock
Jun  7 03:50:35 ##servername_hidden## systemd[1]: Reloading The Apache HTTP Server.
Jun  7 03:50:36 ##servername_hidden## systemd[1]: Reloaded The Apache HTTP Server.
Jun  7 03:50:39 ##servername_hidden## httpd[64204]: Server configured, listening on: port 7081, port 7080
Jun  7 03:51:09 ##servername_hidden## grafana[2309]: logger=alerting.evalContext t=2024-06-07T03:51:09.003778904+02:00 level=error msg="Alert Rule Result Error" ruleId=4 name="Utilizzo della memoria MySQL" error="request handler error: [plugin.downstreamError] failed to query data: Failed to query data: rpc error: code = DeadlineExceeded desc = context deadline exceeded" changingstateto=keep_state
Jun  7 03:51:12 ##servername_hidden## grafana[2309]: logger=alerting.evalContext t=2024-06-07T03:51:12.002282807+02:00 level=error msg="Alert Rule Result Error" ruleId=7 name="Utilizzo della partizione \"/boot\"" error="request handler error: [plugin.downstreamError] failed to query data: Failed to query data: rpc error: code = DeadlineExceeded desc = context deadline exceeded" changingstateto=keep_state
Jun  7 03:51:13 ##servername_hidden## grafana[2309]: logger=alerting.evalContext t=2024-06-07T03:51:13.002197925+02:00 level=error msg="Alert Rule Result Error" ruleId=5 name="Utilizzo memoria Plesk" error="request handler error: [plugin.downstreamError] failed to query data: Failed to query data: rpc error: code = DeadlineExceeded desc = context deadline exceeded" changingstateto=keep_state
Jun  7 03:51:15 ##servername_hidden## grafana[2309]: logger=alerting.evalContext t=2024-06-07T03:51:15.002244988+02:00 level=error msg="Alert Rule Result Error" ruleId=8 name="Utilizzo della memoria reale" error="request handler error: [plugin.downstreamError] failed to query data: Failed to query data: rpc error: code = DeadlineExceeded desc = context deadline exceeded" changingstateto=keep_state
Jun  7 03:51:26 ##servername_hidden## grafana[2309]: logger=alerting.evalContext t=2024-06-07T03:51:26.003975209+02:00 level=error msg="Alert Rule Result Error" ruleId=9 name="Cambia utilizzo" error="request handler error: [plugin.downstreamError] failed to query data: Failed to query data: rpc error: code = DeadlineExceeded desc = context deadline exceeded" changingstateto=keep_state
Jun  7 03:51:31 ##servername_hidden## grafana[2309]: logger=alerting.evalContext t=2024-06-07T03:51:31.003663066+02:00 level=error msg="Alert Rule Result Error" ruleId=1 name="Utilizzo memoria Apache e PHP-FPM" error="request handler response error {context deadline exceeded  A <nil> [] [] 0xc003dec360}" changingstateto=keep_state
Jun  7 03:51:33 ##servername_hidden## grafana[2309]: logger=alerting.evalContext t=2024-06-07T03:51:33.002508506+02:00 level=error msg="Alert Rule Result Error" ruleId=2 name="Utilizzo memoria nginx" error="request handler error: [plugin.downstreamError] failed to query data: Failed to query data: rpc error: code = DeadlineExceeded desc = context deadline exceeded" changingstateto=keep_state
Jun  7 03:51:35 ##servername_hidden## apache_control_adapter[271955]: apache ready test: failed, total timeout exceeded
Jun  7 03:51:35 ##servername_hidden## apache_control_adapter[271955]: apache ready test: request error 28: Timeout was reached
Jun  7 03:51:35 ##servername_hidden## apache_control_adapter[271955]: apache ready test: error details: Connection timed out after 19004 milliseconds
Jun  7 03:51:35 ##servername_hidden## apache_control_adapter[271955]: graceful restart failed, perform full restart
Jun  7 03:51:35 ##servername_hidden## systemd[1]: Stopping The Apache HTTP Server...
Jun  7 03:51:36 ##servername_hidden## grafana[2309]: logger=alerting.evalContext t=2024-06-07T03:51:36.002398472+02:00 level=error msg="Alert Rule Result Error" ruleId=3 name="Utilizzo della memoria del server di posta" error="request handler error: [plugin.downstreamError] failed to query data: Failed to query data: rpc error: code = DeadlineExceeded desc = context deadline exceeded" changingstateto=keep_state
Jun  7 03:51:38 ##servername_hidden## grafana[2309]: logger=alerting.evalContext t=2024-06-07T03:51:38.004016455+02:00 level=error msg="Alert Rule Result Error" ruleId=6 name="Utilizzo della partizione \"/\"" error="request handler response error {context deadline exceeded  A <nil> [] [] 0xc0034b8660}" changingstateto=keep_state
Jun  7 03:51:39 ##servername_hidden## systemd[1]: httpd.service: Killing process 272080 (PassengerAgent) with signal SIGKILL.
Jun  7 03:51:39 ##servername_hidden## systemd[1]: httpd.service: Killing process 272461 (PassengerAgent) with signal SIGKILL.
Jun  7 03:51:39 ##servername_hidden## systemd[1]: httpd.service: Succeeded.
Jun  7 03:51:39 ##servername_hidden## systemd[1]: Stopped The Apache HTTP Server.
Jun  7 03:51:39 ##servername_hidden## systemd[1]: Starting The Apache HTTP Server...
Jun  7 03:51:40 ##servername_hidden## systemd[1]: Started The Apache HTTP Server.
Jun  7 03:51:40 ##servername_hidden## httpd[272571]: Server configured, listening on: port 7081, port 7080
Jun  7 03:52:01 ##servername_hidden## systemd[1]: Started Session 2119 of user psaadm.
Jun  7 03:52:02 ##servername_hidden## systemd[1]: session-2119.scope: Succeeded.

NOTE:

- at 03:49:02 update.geo.drweb.com return 404 Not Found
- at 03:49:03 ##servername_hidden## update.pl[270008]: update.geo.drweb.com return 200 OK
- at 03:50:33 ##servername_hidden## update.pl[270008]: Can not resolve update.geo.drweb.com to IP address

at 5:11

Jun  7 05:11:01 ##servername_hidden## dnf[279118]: AlmaLinux 8 - BaseOS                            0.0  B/s |   0  B     00:00
Jun  7 05:11:01 ##servername_hidden## dnf[279118]: Errors during downloading metadata for repository 'baseos':
Jun  7 05:11:01 ##servername_hidden## dnf[279118]:  - Curl error (6): Couldn't resolve host name for https://mirrors.almalinux.org/mirrorlist/8/baseos [Could not resolve host: mirrors.almalinux.org]
Jun  7 05:11:01 ##servername_hidden## dnf[279118]: Error: Failed to download metadata for repo 'baseos': Cannot prepare internal mirrorlist: Curl error (6): Couldn't resolve host name for https://mirrors.almalinux.org/mirrorlist/8/baseos [Could not resolve host: mirrors.almalinux.org]
Jun  7 05:11:01 ##servername_hidden## systemd[1]: dnf-makecache.service: Main process exited, code=exited, status=1/FAILURE
Jun  7 05:11:01 ##servername_hidden## systemd[1]: dnf-makecache.service: Failed with result 'exit-code'.
Jun  7 05:11:01 ##servername_hidden## systemd[1]: Failed to start dnf makecache.```

Is this a network or DNS problem?

resolv.conf:
search novalocal
nameserver 8.8.8.8
nameserver 8.8.4.4
nameserver 1.1.1.1

after reboot, everything is working again
2

@echo24 , welcome to the site and forums.

You are off to a good start by providing logs.

The problem is I cannot get enough context from what you have provided. So I have some questions so that I do not make any assumptions, and yes, it is possible that you are having a network problem specifically, or a DNS resolution problem specifically, or even a DNS problem caused by a network connectivity problem in general.

The other issue is not knowing the environment you are dealing with. Is it a VM, a physical machine with the service you are trying to reach, is the service you are trying to reach on another chassis/VM somewhere “across” the network? Also, what do you mean “monitoring” the server?

A good way to determine is some basic troubleshooting the next time this occurs, not knowing anything about your troubleshooting skills (so I will assume you don’t know any):

  1. Ensure that you can ping the IP address of your own machine that is not the server.
    a) if that works, great that means networking from your home/business network might
    be working.
    b) if it does not work, your own machine might be the problem or the network device in
    between could be faulty.
  2. Assuming “situation-1A,” see if you can ping your gateway’s IP:
    a) if that works, then your network to the switch is good for the time being (Remember,
    flaky network is still possible).
    b) if that doesn’t work, your connection to the network switch is the issue; perhaps a
    bad cable, bad port on the client end, bad port on the switch - any of the three.
  3. Assuming “situation-2A,” see if you can ping the IP address of the misbehaving host and consider:
    a) if the ping was successful, maybe the network is stable presently, or
    b) if the ping was successful, DNS could be the issue. Perhaps the DNS resolvers are
    not stably connected to the network, or the resolvers you are using are not primary
    resolvers and not keeping the A-records for some reason.
    c) if the ping was not successful, then the host’s connectivity is likely to be the problem.

Again, I don’t know your skill level or your environment.