oleg255-server: ssh: connect to host oleg255-server port 22: Connection reset by peer

pdsh@oleg255-client: oleg255-server: ssh exited with exit code 255
oleg255-server: Warning: Permanently added 'oleg255-server' (ECDSA) to the list of known hosts.

MGS_OS_ID_LIKE=rhel centos fedora rocky
MGS_OS_VERSION_ID=8.10
MGS_OS_ID=rocky
MGS_OS_VERSION_CODE=134873088
oleg255-server: Connection reset by 192.168.202.155 port 22

pdsh@oleg255-client: oleg255-server: ssh exited with exit code 255
MDS1_OS_VERSION_CODE=0
MDS1_OS_ID_LIKE= 
oleg255-server: client_loop: send disconnect: Broken pipe

pdsh@oleg255-client: oleg255-server: ssh exited with exit code 255
ost1: has no /etc/os-release
Linux oleg255-server.virtnet 4.18.0rh8.10-debug #2 SMP Mon Jul 14 01:24:22 EDT 2025 x86_64 x86_64 x86_64 GNU/Linux
0 /etc/centos-release
0 /etc/os-release
0 /etc/redhat-release
4 /etc/rocky-release
0 /etc/system-release
CLIENT_OS_ID=rocky
CLIENT_OS_VERSION_CODE=134873088
CLIENT_OS_VERSION_ID=8.10
CLIENT_OS_ID_LIKE=rhel centos fedora rocky
Started at Thu Jul 30 19:04:10 EDT 2026
Lustre is not mounted, trying to do setup ... 
Stopping clients: oleg255-client.virtnet /mnt/lustre (opts:-f)
Stopping clients: oleg255-client.virtnet /mnt/lustre2 (opts:-f)
oleg255-server: Connection reset by 192.168.202.155 port 22

pdsh@oleg255-client: oleg255-server: ssh exited with exit code 255