ssh missfire on bpi-m5 noble

[gene1934]

I had to install (they were missing) sshfs, then fuse and finally ssh on a bpi-m5, using a 128Gb u-sd as boot media. iso was noble from a week ago's download, and updated at 2nd boot after establishing my /etc/hosts file based network.  I can ssh from it /to/ the main box w/o any problem. But any attempt to reverse into it /from/ another machine /to/ it is "connection reset by peer". I haven't touched /etc/ssh/*config's from default values. Is there something I need to set/reset in those files to restore incoming logins?  And no, I do not enable root logins. Also, systemd is still a puzzle to me if its involved.

 

Thanks for any advice.

[Werner]

what?

 

armbianmonitor -u

[gene1934]

<https://paste.armbian.com/bebayihagi>

 

I did look at it, but nothing yelled at me in a quick scan. Not sure what I s/b looking at.

 

Thank you Werner.

 

 

[eselarm]

31 minutes ago, gene1934 said:

https://paste.armbian.com/bebayihagi

Network is down:

2: end0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000

 

All instances I could find.

 

I think your own networking methods conflict with what is common nowadays and also might be reason ssh server is not even running or depending on a pseudo random situation. Same as for other topic where you could not reach armbian repo server. 

[gene1934]

You might not have been looking at the newest dmesg, I had a hard time convincing NetworkManager to stop calling for dhcp and just use the static settings I gave it.  Everytime I looked it was re-enabled. Once I had convinced it to skip the dhcp BS, network is fine, apt works, ping -c1 yahoo.com works and FF can browse the whole planet.  Everything works except /incoming ssh/.

 

I can goto that printer and log into this machine, but I can't ssh into that machine.  I can't "ssh-copy-id gene@e5p" which aliases in the hosts file to 192.168.71.122, it's refusing the incoming connection that worked with 6 other machines.  Is there some other tool to trace this?  htop says it is ATM. 

 

Thank you.

[gene1934]

To clarify that last line htop say's ssh_config is in the cmd listing. 

put a tail on /var/log/syslog since it has the newest "access time" of any file in e5p's /var/log

Further: "ssh gene@coyote" successfully logged into coyote, so assuming that ssh is running

set e5p's /etc/apparmor verbose on with nano.

from that login "ssh gene@e5p" gets "connection reset by peer", and NO update to syslog. The rejection is not even making it to ANY of the logs.  So what's next?  Switch back to a 64G u-sd? Is a 128G u-sd too big? I am out of ideas. And a $3000 3d printer is Dead In The Water, no way to restore its klipper /home/gene/printer_data directory after a forced upgrade from jammy to noble.

 

Thanks.

 

[gene1934]

Now I have restarted the install with a 64G u-card, and it is totally different. it only took 1 pass at networkmanager to make all the local network work in that I can ssh gene@any-local-machine and bavk again.  But now I cannot get thru the router for its dnsmasq server. All addresses in the network setup are checked and correct. The hostname has been reset to its normal, e5p, has been used for 3 or 4 years but the Network is unreachable because the router isn't functioning as a dns lookup.  Its even been rebooted a couple times.  New faster router about 4 months back with dd-wrt in it.

 

ip a:

   end0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 2a:b6:6c:1a:3a:1f brd ff:ff:ff:ff:ff:ff
    inet 192.168.71.122/24 brd 192.168.71.255 scope global noprefixroute end0
       valid_lft forever preferred_lft forever
    inet6 fe80::28b6:6cff:fe1a:3a1f/64 scope link 
       valid_lft forever preferred_lft forever

ip r:

192.168.71.0/24 dev end0 proto kernel scope link src 192.168.71.122 metric 100 
192.168.71.0/24 via 192.168.71.1 dev end0 proto static metric 200 

/etc/netplan/armbian.yaml:

root@e5p:/etc/netplan# cat armbian.yaml
network:
  version: 2
  renderer: NetworkManager
  ethernets:
    end0:
      addresses:
      - "192.168.71.122/24"
      nameservers:
        addresses:
        - 192.168.71.1
      dhcp4: false
      dhcp6: false
      macaddress: "2a:b6:6c:1a:3a:1f"
      routes:
      - metric: 200
        to: "192.168.71.1/24"
        via: "192.168.71.1"
 

Can anyone see what is wrong with that?

 

Thanks.