I got this error when i push my code to Github Git Push Error
And i try to use ssh -T to test the connection, it's still failed, here is the debug info
david@DavidHuadeMacBook-Pro ~ ssh -vT git@github.com
OpenSSH_8.6p1, LibreSSL 3.3.6
debug1: Reading configuration data /Users/david/.ssh/config
debug1: /Users/david/.ssh/config line 2: Applying options for github.com
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 21: include /etc/ssh/ssh_config.d/* matched no files
debug1: /etc/ssh/ssh_config line 54: Applying options for *
debug1: Authenticator provider $SSH_SK_PROVIDER did not resolve; disabling
debug1: Connecting to github.com port 22.
debug1: Connection established.
debug1: identity file /Users/david/.ssh/davidhua94_rsa type 0
debug1: identity file /Users/david/.ssh/davidhua94_rsa-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_8.6
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.6
debug1: compat_banner: match: OpenSSH_7.6 pat OpenSSH_7.0*,OpenSSH_7.1*,OpenSSH_7.2*,OpenSSH_7.3*,OpenSSH_7.4*,OpenSSH_7.5*,OpenSSH_7.6*,OpenSSH_7.7* compat 0x04000002
debug1: Authenticating to github.com:22 as 'git'
debug1: load_hostkeys: fopen /Users/david/.ssh/known_hosts2: No such file or directory
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or directory
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: curve25519-sha256
debug1: kex: host key algorithm: rsa-sha2-512
debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: SSH2_MSG_KEX_ECDH_REPLY received
debug1: Server host key: ssh-rsa SHA256:rEmlJenVMSL5GVemSY0Gk8WGw6B4ege4J85M+vup8R0
debug1: load_hostkeys: fopen /Users/david/.ssh/known_hosts2: No such file or directory
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or directory
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that a host key has just been changed.
The fingerprint for the RSA key sent by the remote host is
SHA256:rEmlJenVMSL5GVemSY0Gk8WGw6B4ege4J85M+vup8R0.
Please contact your system administrator.
Add correct host key in /Users/david/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in /Users/david/.ssh/known_hosts:1
Host key for github.com has changed and you have requested strict checking.
Host key verification failed.
I also try to fix it with command ssh-keygen -R "github.com", still failed, and the log shown Too many authentication failures
The incorrect finger print from Github caused by incorrect DNS config, i reset my DNS config to 8.8.8.8 and 8.8.4.4, it works now.