Hi,
In the middle of my ssh session, the server froze and it went offline. I plugged in the monitor to the server and there’s no display either. I had to restart to bring the server back online. This has happened earlier too, but last time the server was idle in the night, and when I checked in the morning, it was offline.
What could have happened? What logs do I need to look for?
Thanks in advance!
I’d start from /var/log/messages
I see the following lines just before the server froze.
> Jun 1 16:23:31 localhost systemd[1]: setroubleshootd.service: Deactivated successfully.
> Jun 1 16:23:35 localhost NetworkManager[1344]: <info> [1685661815.1945] device (wlp4s0): set-hw-addr: set MAC address to 76:F6:27:2E:F2:35 (scanning)
> Jun 1 16:23:35 localhost NetworkManager[1344]: <info> [1685661815.2159] device (wlp4s0): supplicant interface state: inactive -> disconnected
> Jun 1 16:23:35 localhost NetworkManager[1344]: <info> [1685661815.2160] device (p2p-dev-wlp4s0): supplicant management interface state: inactive -> disconnected
> Jun 1 16:23:35 localhost NetworkManager[1344]: <info> [1685661815.2213] device (wlp4s0): supplicant interface state: disconnected -> inactive
> Jun 1 16:23:35 localhost NetworkManager[1344]: <info> [1685661815.2213] device (p2p-dev-wlp4s0): supplicant management interface state: disconnected -> inactive
> Jun 1 16:23:42 localhost sshd[50515]: main: sshd: ssh-rsa algorithm is disabled
That looks like the end of something; not the start of “going off”. Look at earlier events.
The logs before this were about the nginx webserver. Doesn’t seem suspicious to me.
The server went offline again. Please find below the logs from /var/log/messages.
Jun 4 19:58:11 localhost NetworkManager[1310]: [1685933891.1269] device (wlp4s0): set-hw-addr: set MAC address to XX:xX:XX:XX:XX:XX (scanning)
Jun 4 19:58:11 localhost NetworkManager[1310]: [1685933891.1355] device (wlp4s0): supplicant interface state: inactive → disconnected
Jun 4 19:58:11 localhost NetworkManager[1310]: [1685933891.1355] device (p2p-dev-wlp4s0): supplicant management interface state: inactive → disconnected
Jun 4 19:58:11 localhost NetworkManager[1310]: [1685933891.1409] device (wlp4s0): supplicant interface state: disconnected → inactive
Jun 4 19:58:11 localhost NetworkManager[1310]: [1685933891.1409] device (p2p-dev-wlp4s0): supplicant management interface state: disconnected → inactive
Jun 4 19:58:32 localhost sshd[28506]: main: sshd: ssh-rsa algorithm is disabled
Jun 4 19:58:42 localhost sshd[28511]: main: sshd: ssh-rsa algorithm is disabled
Jun 4 19:58:55 localhost sshd[28516]: main: sshd: ssh-rsa algorithm is disabled
Jun 4 19:59:08 localhost sshd[28521]: main: sshd: ssh-rsa algorithm is disabled
Jun 4 20:00:08 localhost sshd[28526]: main: sshd: ssh-rsa algorithm is disabled
Jun 4 20:00:20 localhost sshd[28531]: main: sshd: ssh-rsa algorithm is disabled
Jun 4 20:01:42 localhost sshd[28548]: main: sshd: ssh-rsa algorithm is disabled
Jun 4 20:05:04 localhost NetworkManager[1310]: [1685934304.0976] device (wlp4s0): set-hw-addr: set MAC address to AA:AA:AA:AA:AA:AA (scanning)
Jun 4 20:05:04 localhost NetworkManager[1310]: [1685934304.1065] device (wlp4s0): supplicant interface state: inactive → disconnected
Jun 4 20:05:04 localhost NetworkManager[1310]: [1685934304.1065] device (p2p-dev-wlp4s0): supplicant management interface state: inactive → disconnected
Jun 4 20:05:04 localhost NetworkManager[1310]: [1685934304.1118] device (wlp4s0): supplicant interface state: disconnected → inactive
Jun 4 20:05:04 localhost NetworkManager[1310]: [1685934304.1118] device (p2p-dev-wlp4s0): supplicant management interface state: disconnected → inactive
Jun 4 20:09:34 localhost sshd[28555]: main: sshd: ssh-rsa algorithm is disabled
Jun 4 20:09:46 localhost sshd[28560]: main: sshd: ssh-rsa algorithm is disabled
Jun 4 20:09:56 localhost sshd[28565]: main: sshd: ssh-rsa algorithm is disabled
Jun 4 20:11:57 localhost NetworkManager[1310]: [1685934717.1438] device (wlp4s0): set-hw-addr: set MAC address to BB:BB:BB:BB:BB:BB (scanning)
Jun 4 20:11:57 localhost NetworkManager[1310]: [1685934717.1525] device (wlp4s0): supplicant interface state: inactive → disconnected
Jun 4 20:11:57 localhost NetworkManager[1310]: [1685934717.1525] device (p2p-dev-wlp4s0): supplicant management interface state: inactive → disconnected
Jun 4 20:11:57 localhost NetworkManager[1310]: [1685934717.1579] device (wlp4s0): supplicant interface state: disconnected → inactive
Jun 4 20:11:57 localhost NetworkManager[1310]: [1685934717.1579] device (p2p-dev-wlp4s0): supplicant management interface state: disconnected → inactive
Jun 4 20:12:22 localhost sshd[28572]: main: sshd: ssh-rsa algorithm is disabled
Jun 4 20:12:35 localhost sshd[28577]: main: sshd: ssh-rsa algorithm is disabled
isn’t this just the wifi disconnecting? can you try ethernet?
I removed the wifi pcie adapter and just using ethenet. The server went offline again last night. Please find below the logs from /var/log/messages.
Jun 7 09:50:45 localhost systemd[1]: Starting dnf makecache…
Jun 7 09:50:46 localhost dnf[13037]: AlmaLinux 9 - AppStream 6.4 kB/s | 4.1 kB 00:00
Jun 7 09:50:46 localhost dnf[13037]: AlmaLinux 9 - BaseOS 7.9 kB/s | 3.8 kB 00:00
Jun 7 09:50:47 localhost dnf[13037]: AlmaLinux 9 - Extras 5.5 kB/s | 3.8 kB 00:00
Jun 7 09:50:47 localhost dnf[13037]: Docker CE Stable - x86_64 22 kB/s | 3.5 kB 00:00
Jun 7 09:50:47 localhost dnf[13037]: Metadata cache created.
Jun 7 09:50:47 localhost systemd[1]: dnf-makecache.service: Deactivated successfully.
Jun 7 09:50:47 localhost systemd[1]: Finished dnf makecache.
Jun 7 10:27:20 localhost cupsd[1286]: REQUEST localhost - - “POST / HTTP/1.1” 200 182 Renew-Subscription successful-ok
Jun 7 10:53:36 localhost auditd[1052]: Audit daemon rotating log files
Jun 7 10:58:40 localhost dnf[14313]: Metadata cache refreshed recently.
Jun 7 10:58:40 localhost systemd[1]: dnf-makecache.service: Deactivated successfully.
Jun 7 10:58:40 localhost systemd[1]: Finished dnf makecache.
Jun 7 10:58:40 localhost systemd[1]: Starting dnf makecache…
Jun 7 11:25:40 localhost cupsd[1286]: REQUEST localhost - - “POST / HTTP/1.1” 200 182 Renew-Subscription successful-ok
Jun 7 12:04:41 localhost systemd[1]: Starting dnf makecache…
Jun 7 12:04:42 localhost dnf[15192]: Metadata cache refreshed recently.
Jun 7 12:04:42 localhost systemd[1]: dnf-makecache.service: Deactivated successfully.
Jun 7 12:04:42 localhost systemd[1]: Finished dnf makecache.
Jun 7 12:24:00 localhost cupsd[1286]: REQUEST localhost - - “POST / HTTP/1.1” 200 182 Renew-Subscription successful-ok
Jun 7 13:22:20 localhost cupsd[1286]: REQUEST localhost - - “POST / HTTP/1.1” 200 182 Renew-Subscription successful-ok
Jun 7 13:33:08 localhost dnf[16331]: AlmaLinux 9 - AppStream 6.2 kB/s | 4.1 kB 00:00
Jun 7 13:33:08 localhost systemd[1]: Starting dnf makecache…
Jun 7 13:33:09 localhost dnf[16331]: AlmaLinux 9 - BaseOS 5.8 kB/s | 3.8 kB 00:00
Jun 7 13:33:10 localhost dnf[16331]: AlmaLinux 9 - Extras 7.5 kB/s | 3.8 kB 00:00
Jun 7 13:33:10 localhost dnf[16331]: Docker CE Stable - x86_64 27 kB/s | 3.5 kB 00:00
Jun 7 13:33:10 localhost dnf[16331]: Metadata cache created.
Jun 7 13:33:10 localhost systemd[1]: dnf-makecache.service: Deactivated successfully.
Jun 7 13:33:10 localhost systemd[1]: Finished dnf makecache.
Jun 7 14:20:40 localhost cupsd[1286]: REQUEST localhost - - “POST / HTTP/1.1” 200 182 Renew-Subscription successful-ok
Jun 7 15:15:16 localhost dnf[17848]: Metadata cache refreshed recently.
Jun 7 15:15:16 localhost systemd[1]: dnf-makecache.service: Deactivated successfully.
Jun 7 15:15:16 localhost systemd[1]: Finished dnf makecache.
Jun 7 15:15:16 localhost systemd[1]: Starting dnf makecache…
Jun 7 15:19:00 localhost cupsd[1286]: REQUEST localhost - - “POST / HTTP/1.1” 200 182 Renew-Subscription successful-ok
Jun 7 16:17:20 localhost cupsd[1286]: REQUEST localhost - - “POST / HTTP/1.1” 200 182 Renew-Subscription successful-ok
Jun 7 16:31:48 localhost dnf[18775]: Metadata cache refreshed recently.
Jun 7 16:31:48 localhost systemd[1]: dnf-makecache.service: Deactivated successfully.
Jun 7 16:31:48 localhost systemd[1]: Finished dnf makecache.
Jun 7 16:31:48 localhost systemd[1]: Starting dnf makecache…
Jun 7 17:15:40 localhost cupsd[1286]: REQUEST localhost - - “POST / HTTP/1.1” 200 182 Renew-Subscription successful-ok
Jun 7 17:42:56 localhost dnf[20220]: AlmaLinux 9 - AppStream 6.8 kB/s | 4.1 kB 00:00
Jun 7 17:42:56 localhost systemd[1]: Starting dnf makecache…
Jun 7 17:42:57 localhost dnf[20220]: AlmaLinux 9 - BaseOS 7.6 kB/s | 3.8 kB 00:00
Jun 7 17:42:57 localhost dnf[20220]: AlmaLinux 9 - Extras 7.1 kB/s | 3.8 kB 00:00
Jun 7 17:42:57 localhost dnf[20220]: Docker CE Stable - x86_64 25 kB/s | 3.5 kB 00:00
Jun 7 17:42:58 localhost dnf[20220]: Metadata cache created.
Jun 7 17:42:58 localhost systemd[1]: dnf-makecache.service: Deactivated successfully.
Jun 7 17:42:58 localhost systemd[1]: Finished dnf makecache.
Jun 7 18:14:00 localhost cupsd[1286]: REQUEST localhost - - “POST / HTTP/1.1” 200 182 Renew-Subscription successful-ok
Jun 7 19:12:20 localhost cupsd[1286]: REQUEST localhost - - “POST / HTTP/1.1” 200 182 Renew-Subscription successful-ok
Jun 7 19:31:44 localhost dnf[22111]: Metadata cache refreshed recently.
Jun 7 19:31:44 localhost systemd[1]: dnf-makecache.service: Deactivated successfully.
Jun 7 19:31:44 localhost systemd[1]: Finished dnf makecache.
Jun 7 19:31:44 localhost systemd[1]: Starting dnf makecache…
Jun 7 20:10:40 localhost cupsd[1286]: REQUEST localhost - - “POST / HTTP/1.1” 200 182 Renew-Subscription successful-ok
Jun 7 20:19:34 localhost auditd[1052]: Audit daemon rotating log files
Jun 7 21:09:00 localhost cupsd[1286]: REQUEST localhost - - “POST / HTTP/1.1” 200 182 Renew-Subscription successful-ok
Jun 7 21:14:03 localhost systemd[1]: Starting dnf makecache…
Jun 7 21:14:04 localhost dnf[23137]: AlmaLinux 9 - AppStream 4.5 kB/s | 4.1 kB 00:00
Jun 7 21:14:04 localhost dnf[23137]: AlmaLinux 9 - BaseOS 7.5 kB/s | 3.8 kB 00:00
Jun 7 21:14:05 localhost dnf[23137]: AlmaLinux 9 - Extras 5.8 kB/s | 3.8 kB 00:00
Jun 7 21:14:05 localhost dnf[23137]: Docker CE Stable - x86_64 20 kB/s | 3.5 kB 00:00
Jun 7 21:14:05 localhost dnf[23137]: Metadata cache created.
Jun 7 21:14:05 localhost systemd[1]: dnf-makecache.service: Deactivated successfully.
Jun 7 21:14:05 localhost systemd[1]: Finished dnf makecache.
Jun 7 21:38:16 localhost systemd[1804]: Finished Cleanup of User’s Temporary Files and Directories.
Jun 7 21:38:16 localhost systemd[1804]: Starting Cleanup of User’s Temporary Files and Directories…
Jun 7 21:47:06 localhost systemd[1]: Finished Cleanup of Temporary Directories.
Jun 7 21:47:06 localhost systemd[1]: run-credentials-systemd\x2dtmpfiles\x2dclean.service.mount: Deactivated successfully.
Jun 7 21:47:06 localhost systemd[1]: Starting Cleanup of Temporary Directories…
Jun 7 21:47:06 localhost systemd[1]: systemd-tmpfiles-clean.service: Deactivated successfully.
Jun 7 22:07:20 localhost cupsd[1286]: REQUEST localhost - - “POST / HTTP/1.1” 200 182 Renew-Subscription successful-ok
Jun 7 22:31:59 localhost dnf[23402]: Metadata cache refreshed recently.
Jun 7 22:31:59 localhost systemd[1]: dnf-makecache.service: Deactivated successfully.
Jun 7 22:31:59 localhost systemd[1]: Finished dnf makecache.
Jun 7 22:31:59 localhost systemd[1]: Starting dnf makecache…
Jun 7 23:05:40 localhost cupsd[1286]: REQUEST localhost - - “POST / HTTP/1.1” 200 182 Renew-Subscription successful-ok
Note: Another logline that was recurring thousands of times was ‘ssh-rsa algorithm is disabled’; which I removed from the above section before pasting here.
i’ve seen dnf-makecache kill a RHEL8 box before, you could disable that:
sudo systemctl disable --now dnf-makecache.timer
Thanks, I have disabled it for now. I will keep you posted if the server goes offline again.
The server went offline even after disabling the dnf-makecache.timer. Here’s the latest log from /var/log/messages.
Jun 9 04:01:03 localhost sshd[10460]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:01:25 localhost cupsd[1304]: REQUEST localhost - - “POST / HTTP/1.1” 200 182 Renew-Subscription successful-ok
Jun 9 04:04:26 localhost sshd[10464]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:04:38 localhost sshd[10470]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:06:23 localhost sshd[10476]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:06:35 localhost sshd[10481]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:06:46 localhost sshd[10486]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:08:43 localhost sshd[10492]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:08:59 localhost sshd[10497]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:09:11 localhost sshd[10502]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:09:13 localhost sshd[10505]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:09:23 localhost sshd[10512]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:09:27 localhost sshd[10516]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:09:33 localhost sshd[10520]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:09:42 localhost sshd[10528]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:09:45 localhost sshd[10531]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:11:47 localhost sshd[10539]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:15:04 localhost sshd[10542]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:15:56 localhost sshd[10545]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:16:09 localhost sshd[10550]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:18:30 localhost sshd[10556]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:18:39 localhost sshd[10561]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:18:53 localhost sshd[10566]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:24:22 localhost sshd[10573]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:24:32 localhost sshd[10579]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:24:40 localhost sshd[10584]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:24:56 localhost sshd[10589]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:25:04 localhost sshd[10594]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:25:13 localhost sshd[10599]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:25:21 localhost sshd[10604]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:25:30 localhost sshd[10609]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:25:45 localhost sshd[10614]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:27:19 localhost sshd[10619]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:27:32 localhost sshd[10624]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:28:47 localhost sshd[10629]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:30:03 localhost sshd[10631]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:30:11 localhost sshd[10636]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:30:22 localhost sshd[10642]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:32:46 localhost sshd[10649]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:38:41 localhost sshd[10653]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:38:54 localhost sshd[10658]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:41:01 localhost sshd[10663]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:41:13 localhost sshd[10668]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:41:23 localhost sshd[10674]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:41:30 localhost sshd[10678]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:41:35 localhost sshd[10683]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:41:44 localhost sshd[10689]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:41:46 localhost sshd[10692]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:41:51 localhost sshd[10696]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:41:55 localhost sshd[10702]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:42:03 localhost sshd[10708]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:42:03 localhost sshd[10710]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:42:14 localhost sshd[10719]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:42:39 localhost sshd[10724]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:44:35 localhost sshd[10727]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:44:51 localhost sshd[10728]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:45:42 localhost sshd[10729]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:45:50 localhost sshd[10730]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:45:58 localhost sshd[10731]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:46:06 localhost sshd[10732]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:47:18 localhost sshd[10735]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:47:26 localhost sshd[10736]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:47:34 localhost sshd[10737]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:48:39 localhost sshd[10740]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:48:48 localhost sshd[10741]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:49:42 localhost sshd[10744]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:50:01 localhost sshd[10747]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:50:03 localhost sshd[10750]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:50:11 localhost sshd[10753]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:50:11 localhost sshd[10755]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:50:19 localhost sshd[10759]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:50:27 localhost sshd[10761]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:50:35 localhost sshd[10762]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:50:43 localhost sshd[10763]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:50:51 localhost sshd[10764]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:50:59 localhost sshd[10765]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:51:07 localhost sshd[10766]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:52:09 localhost sshd[10771]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:52:17 localhost sshd[10772]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:53:29 localhost sshd[10773]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:53:41 localhost sshd[10778]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:53:53 localhost sshd[10783]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:56:31 localhost sshd[10789]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:57:06 localhost sshd[10791]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:57:18 localhost sshd[10796]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:57:30 localhost sshd[10802]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:57:40 localhost sshd[10807]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 04:59:45 localhost cupsd[1304]: REQUEST localhost - - “POST / HTTP/1.1” 200 182 Renew-Subscription successful-ok
Jun 9 05:01:33 localhost sshd[10825]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 05:01:45 localhost sshd[10830]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 05:05:21 localhost sshd[10836]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 05:05:33 localhost sshd[10842]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 05:05:44 localhost sshd[10847]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 05:07:21 localhost sshd[10853]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 05:10:32 localhost sshd[10856]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 05:12:54 localhost sshd[10859]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 05:13:07 localhost sshd[10864]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 05:13:10 localhost sshd[10867]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 05:13:10 localhost sshd[10869]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 05:13:21 localhost sshd[10879]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 05:13:31 localhost sshd[10884]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 05:13:34 localhost sshd[10886]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 05:13:45 localhost sshd[10891]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 05:14:00 localhost sshd[10899]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 05:14:12 localhost sshd[10904]: main: sshd: ssh-rsa algorithm is disabled
Jun 9 05:14:25 localhost sshd[10909]: main: sshd: ssh-rsa algorithm is disabled
Where does that message come from? (From sshd, obviously, but what triggers it?)
Have you modified sshd config? Tried to add ssh-rsa?
Or, does sshd say that when some client tries to connect with ssh-rsa? (Rather often.)