Eu configurei uma imagem qemu ARM64 com dropbear. Estou tentando fazer o ssh do host. Usei a seguinte linha de comando para iniciar o convidado.
#!/bin/bash
~/repos/qemu-2.6.0-rc3/aarch64-softmmu/qemu-system-aarch64 \
-machine virt \
-cpu cortex-a57 \
-machine type=virt \
-nographic -smp 1 \
-m 2048 \
-kernel ./arch/arm64/boot/Image \
--append "console=ttyAMA0" \
-net nic,model=virtio \
-net user,hostfwd=tcp::10022-:22
No bootlog vejo o seguinte
drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
Freeing unused kernel memory: 7684K (ffffffc000715000 - ffffffc000e96000)
Freeing alternatives memory: 4K (ffffffc000e96000 - ffffffc000e97000)
Starting logging: OK
Initializing random number generator... random: dd urandom read with 1 bits of entropy available
done.
Starting network: OK
Starting dropbear sshd: OK
Welcome to Buildroot
buildroot login: root
Além disso, posso fazer uma visita ssh root@localhostao convidado.
No entanto, quando tento fazer o ssh do host, recebo o seguinte: -
$ ssh root@localhost -p10022 -vvv
OpenSSH_7.2p2 Ubuntu-4ubuntu2.1, OpenSSL 1.0.2g 1 Mar 2016
debug1: Reading configuration data /home/mememe/.ssh/config
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: auto-mux: Trying existing master
debug1: Control socket "/tmp/ssh_mux_172.16.109.1_10022_root" does not exist
debug2: resolving "172.16.109.1" port 10022
debug2: ssh_connect_direct: needpriv 0
debug1: Connecting to 172.16.109.1 [172.16.109.1] port 10022.
debug1: Connection established.
debug1: identity file /home/mememe/.ssh/id_rsa type 1
debug1: key_load_public: No such file or directory
debug1: identity file /home/mememe/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/mememe/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/mememe/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/mememe/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/mememe/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/mememe/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/mememe/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu2.1
Neste ponto não recebo resposta. Por que esse problema ocorre? Minha configuração ssh possui apenas as seguintes linhas, então acho que esse não é o problema.
ControlMaster auto
ControlPath /tmp/ssh_mux_%h_%p_%r
Eu configurei a senha root na VM e gostaria de poder fazer ssh usando a senha root.
EDITAR
Se eu esperar o suficiente, recebo a seguinte linha na saída detalhada.
ssh_exchange_identification: read: Connection reset by peer