现象

xshell5登录欧拉22.03时报错：找不到匹配的host key 算法

解决方法一:

1.编辑/etc/ssh/sshd_config,如下所示:

# 在行尾增加",ecdh-sha2-nistp521"，以满足ecdsa公钥方式登录(密钥长度521)
KexAlgorithms curve25519-sha256,curve25519-sha256@libssh.org,diffie-hellman-group-exchange-sha256,ecdh-sha2-nistp521

# 在行尾增加",ssh-rsa"，以满足RSA 登录
HostKeyAlgorithms ssh-ed25519,ssh-ed25519-cert-v01@openssh.com,rsa-sha2-256,rsa-sha2-512,ssh-rsa

# 在行尾增加",ssh-rsa"，以满足RSA 登录
PubkeyAcceptedKeyTypes ssh-ed25519,ssh-ed25519-cert-v01@openssh.com,rsa-sha2-256,rsa-sha2-512,ssh-rsa

2.重启sshd服务
systemctl restart sshd

解决方法二

1.编辑/etc/ssh/sshd_config,如下所示:

# 屏蔽下面的2行(最后2行)
# HostKeyAlgorithms ssh-ed25519,ssh-ed25519-cert-v01@openssh.com,rsa-sha2-256,rsa-sha2-512
# PubkeyAcceptedKeyTypes ssh-ed25519,ssh-ed25519-cert-v01@openssh.com,rsa-sha2-256,rsa-sha2-512

2.重启sshd服务
systemctl restart sshd