Error on trying to add SSH public key to a user via webgui

  • Hello, I have SSH working fine for months on various OMV machines.


    I wanted to add a second public key to a user for use with rsync. I got the same error on two machines, one an AMD64 box and one a RaspberryPi 3 - both running OMV5.


    On trying to apply the changes I get a long error - can anyone help me decipher this?:

    Code
    Failed to execute command 'export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin; export LANG=C.UTF-8; omv-salt deploy run ssh 2>&1' with exit code '1': /usr/lib/python3/dist-packages/salt/utils/decorators/signature.py:31: DeprecationWarning: `formatargspec` is deprecated since Python 3.5. Use `signature` and the `Signature` object directly *salt.utils.args.get_function_argspec(original_function) debian: ---------- ID: remove_ssh_authorized_keys Function: file.directory Name: /var/lib/openmediavault/ssh/authorized_keys Result: True Comment: Files cleaned from directory /var/lib/openmediavault/ssh/authorized_keys Started: 00:25:27.755780 Duration: 1.512 ms Changes: ---------- /var/lib/openmediavault/ssh/authorized_keys/myusername: ---------- removed: Removed due to clean removed: - /var/lib/openmediavault/ssh/authorized_keys/myusername ---------- ID: create_ssh_authorized_key_file_myusername Function: file.managed Name: /var/lib/openmediavault/ssh/authorized_keys/myusername Result: True Comment: File /var/lib/openmediavault/ssh/authorized_keys/myusername updated Started: 00:25:27.757405 Duration: 2.346 ms Changes: ---------- diff: New file user: myusername ---------- ID: create_tmp_pubkey_file_myusername_1 Function: file.managed Name: /tmp/tmpzbwfhxdr Result: True Comment: File /tmp/tmpzbwfhxdr updated Started: 00:25:27.759858 Duration: 25.691 ms Changes: ---------- diff: --- +++ @@ -0,0 +1,9 @@ +---- BEGIN SSH2 PUBLIC KEY ---- +Comment: "rsa-key-20190118" +AAAAB3NzaC1yc2EAAAABJQAAAQEA2V57GdjZF3ypQuOKQ9zObejNXKQYkIfVu2eQ +SxItL1o/5qHK2EAIVdHMUp8pBoOZAc7wBa7gDvhhPGhClBsaC73rWq+p2ntbUFVj +DVmamtGaOyTiS79mtQ/AzIZJO16k9QvfeelAKaj6XkAO5ZFh7VYtYDQDWu5wvyWy +TS67X9dILiSm9U2IbbZQZxvmfAKznVLGU21e7FDjUpIvvabFmWKxUjddlUXXXUCv +ZMibDtXtU1FsEbCuFGYjvo3d4uqwcZK1izSSSAGf0+f6YgxVm2vdKWpaA8BJVMfY +I8ykYNLMPkLddAs8SNtT91Xo108Z7tAhIGA3dJJ+GbTuoH+pGQ== +---- END SSH2 PUBLIC KEY ---- ---------- ID: append_ssh_authorized_key_myusername_1 Function: cmd.run Name: ssh-keygen -i -f '/tmp/tmpzbwfhxdr' >> '/var/lib/openmediavault/ssh/authorized_keys/myusername' Result: True Comment: Command "ssh-keygen -i -f '/tmp/tmpzbwfhxdr' >> '/var/lib/openmediavault/ssh/authorized_keys/myusername'" run Started: 00:25:27.786159 Duration: 22.557 ms Changes: ---------- pid: 3281 retcode: 0 stderr: stdout: ---------- ID: remove_tmp_pubkey_file_myusername_1 Function: file.absent Name: /tmp/tmpzbwfhxdr Result: True Comment: Removed file /tmp/tmpzbwfhxdr Started: 00:25:27.809399 Duration: 1.746 ms Changes: ---------- removed: /tmp/tmpzbwfhxdr ---------- ID: create_tmp_pubkey_file_myusername_2 Function: file.managed Name: /tmp/tmpp2_vmk6h Result: True Comment: File /tmp/tmpp2_vmk6h updated Started: 00:25:27.811506 Duration: 8.279 ms Changes: ---------- diff: --- +++ @@ -0,0 +1,6 @@ +---- BEGIN SSH2 PUBLIC KEY ---- +Comment: "rs-key" +AAAAB3NzaC1yc2EAAAADAQABAAAAYQDOUxjgVJOyRf/9WeEBfPL567d9wy0HFYfe +VILVQo69Mk/MW3s9HUzUPgyp/LlTNTzgaKxouTpt56SpMWhc3bGASZ8PTSMAljg4 +50YVeKESGFbuAa+VCyvElpInwcT02ec= +---- END SSH2 PUBLIC KEY ---- ---------- ID: append_ssh_authorized_key_myusername_2 Function: cmd.run Name: ssh-keygen -i -f '/tmp/tmpp2_vmk6h' >> '/var/lib/openmediavault/ssh/authorized_keys/myusername' Result: False Comment: Command "ssh-keygen -i -f '/tmp/tmpp2_vmk6h' >> '/var/lib/openmediavault/ssh/authorized_keys/myusername'" run Started: 00:25:27.820174 Duration: 12.931 ms Changes: ---------- pid: 3283 retcode: 255 stderr: decode blob failed: Invalid key length stdout: ---------- ID: remove_tmp_pubkey_file_myusername_2 Function: file.absent Name: /tmp/tmpp2_vmk6h Result: True Comment: Removed file /tmp/tmpp2_vmk6h Started: 00:25:27.833308 Duration: 0.507 ms Changes: ---------- removed: /tmp/tmpp2_vmk6h ---------- ID: configure_ssh_sshd_config Function: file.managed Name: /etc/ssh/sshd_config Result: True Comment: File /etc/ssh/sshd_config is in the correct state Started: 00:25:27.833923 Duration: 35.578 ms Changes: ---------- ID: start_ssh_service Function: service.running Name: ssh Result: True Comment: The service ssh is already running Started: 00:25:27.878126 Duration: 58.484 ms Changes: Summary for debian ------------ Succeeded: 9 (changed=8) Failed: 1 ------------ Total states run: 10 Total run time: 169.631 ms

    OMV 6 on Raspberry Pi 3/4/5, Odroid C2/HC2 and three cobbled together x64 boxes running Snapraid.

  • OK, think I've sorted this, I was trying to add a short 768bit key.


    I made a new 2048 bit key and seems to have worked.


    So I guess minimum key length requirements changed since I made the original shorter key.

    OMV 6 on Raspberry Pi 3/4/5, Odroid C2/HC2 and three cobbled together x64 boxes running Snapraid.

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