如何修复 Oracle Cloud VNC 连接：no matching host key type found. Their offer: ssh-rsa

问题：

尝试使用 Linux 通过 VNC 连接到 Oracle Cloud 实例时，你会得到类似这样的命令

oracle_vnc_ssh_cmd.sh

ssh -o ProxyCommand='ssh -W %h:%p -p 443 ocid1.instanceconsoleconnection.oc1.eu-frankfurt-1.antheljtwxs32nycl7rgwekcj4t2pecwwcsm7mgzy5c3tt3iiovq564wubta@instance-console.eu-frankfurt-1.oci.oraclecloud.com' -N -L localhost:5900:ocid1.instance.oc1.eu-frankfurt-1.antheljtwxs32nycblplzbuamqsqbi4ipz377f3qhs6a4tdh74j673jfsjtq:5900 ocid1.instance.oc1.eu-frankfurt-1.antheljtwxs32nycblplzbuamqsqbi4ipz377f3qhs6a4tdh74j673jfsjtq

ssh -o ProxyCommand='ssh -W %h:%p -p 443 ocid1.instanceconsoleconnection.oc1.eu-frankfurt-1.antheljtwxs32nycl7rgwekcj4t2pecwwcsm7mgzy5c3tt3iiovq564wubta@instance-console.eu-frankfurt-1.oci.oraclecloud.com' -N -L localhost:5900:ocid1.instance.oc1.eu-frankfurt-1.antheljtwxs32nycblplzbuamqsqbi4ipz377f3qhs6a4tdh74j673jfsjtq:5900 ocid1.instance.oc1.eu-frankfurt-1.antheljtwxs32nycblplzbuamqsqbi4ipz377f3qhs6a4tdh74j673jfsjtq

但你看到类似这样的错误消息

ssh_negotiate_error.txt

Unable to negotiate with 130.61.0.255 port 443: no matching host key type found. Their offer: ssh-rsa

Unable to negotiate with 130.61.0.255 port 443: no matching host key type found. Their offer: ssh-rsa

解决方案

在 ~/.ssh/config 末尾添加以下文本并重试：

ssh_config_allow_rsa.txt

Host *
    HostkeyAlgorithms +ssh-rsa
    PubkeyAcceptedAlgorithms +ssh-rsa

Host *
    HostkeyAlgorithms +ssh-rsa
    PubkeyAcceptedAlgorithms +ssh-rsa

这将使 SSH 接受 RSA 主机密钥。

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