Linux
sshd 忽略authorized_keys 並繼續嘗試authorized_keys2
我剛剛將我的公鑰上傳到伺服器，確保權限是正確的，當我嘗試登錄時它只是拒絕它。
在 sshd_config 中啟用 loglevel DEBUG 後，我得到：
Nov 22 06:53:36 host-1 sshd[8612]: debug1: Forked child 8617. Nov 22 06:53:36 host-1 sshd[8617]: Set /proc/self/oom_score_adj to 0 Nov 22 06:53:36 host-1 sshd[8617]: debug1: rexec start in 5 out 5 newsock 5 pipe 7 sock 8 Nov 22 06:53:36 host-1 sshd[8617]: debug1: inetd sockets after dupping: 3, 3 Nov 22 06:53:36 host-1 sshd[8617]: Connection from some_ip port 50466 Nov 22 06:53:36 host-1 sshd[8617]: debug1: HPN Disabled: 0, HPN Buffer Size: 87380 Nov 22 06:53:36 host-1 sshd[8617]: debug1: Client protocol version 2.0; client software version OpenSSH_6.0p1 Debian-3 Nov 22 06:53:36 host-1 sshd[8617]: SSH: Server;Ltype: Version;Remote: some_ip-50466;Protocol: 2.0;Client: OpenSSH_6.0p1 Debian-3 Nov 22 06:53:36 host-1 sshd[8617]: debug1: match: OpenSSH_6.0p1 Debian-3 pat OpenSSH* Nov 22 06:53:36 host-1 sshd[8617]: debug1: Remote is NON-HPN aware Nov 22 06:53:36 host-1 sshd[8617]: debug1: Enabling compatibility mode for protocol 2.0 Nov 22 06:53:36 host-1 sshd[8617]: debug1: Local version string SSH-2.0-OpenSSH_5.8p1-hpn13v10 Nov 22 06:53:36 host-1 sshd[8617]: debug1: Config token is loglevel Nov 22 06:53:36 host-1 sshd[8617]: debug1: Config token is passwordauthentication Nov 22 06:53:36 host-1 sshd[8617]: debug1: Config token is permitemptypasswords Nov 22 06:53:36 host-1 sshd[8617]: debug1: Config token is usepam Nov 22 06:53:36 host-1 sshd[8617]: debug1: Config token is subsystem Nov 22 06:53:36 host-1 sshd[8617]: debug1: temporarily_use_uid: 1000/1000 (e=0/0) Nov 22 06:53:36 host-1 sshd[8617]: debug1: trying public key file /home/xxx/.ssh/authorized_keys Nov 22 06:53:36 host-1 sshd[8617]: debug1: fd 4 clearing O_NONBLOCK Nov 22 06:53:36 host-1 sshd[8617]: debug1: restore_uid: 0/0 Nov 22 06:53:36 host-1 sshd[8617]: debug1: temporarily_use_uid: 1000/1000 (e=0/0) Nov 22 06:53:36 host-1 sshd[8617]: debug1: trying public key file /home/xxx/.ssh/authorized_keys2 Nov 22 06:53:36 host-1 sshd[8617]: debug1: Could not open authorized keys '/home/xxx/.ssh/authorized_keys2': No such file or directory Nov 22 06:53:36 host-1 sshd[8617]: debug1: restore_uid: 0/0 Nov 22 06:53:36 host-1 sshd[8617]: Failed publickey for xxx from some_ip port 50466 ssh2 Nov 22 06:53:36 host-1 sshd[8617]: debug1: temporarily_use_uid: 1000/1000 (e=0/0) Nov 22 06:53:36 host-1 sshd[8617]: debug1: trying public key file /home/xxx/.ssh/authorized_keys Nov 22 06:53:36 host-1 sshd[8617]: debug1: fd 4 clearing O_NONBLOCK Nov 22 06:53:36 host-1 sshd[8617]: debug1: restore_uid: 0/0 Nov 22 06:53:36 host-1 sshd[8617]: debug1: temporarily_use_uid: 1000/1000 (e=0/0) Nov 22 06:53:36 host-1 sshd[8617]: debug1: trying public key file /home/xxx/.ssh/authorized_keys2 Nov 22 06:53:36 host-1 sshd[8617]: debug1: Could not open authorized keys '/home/xxx/.ssh/authorized_keys2': No such file or directory Nov 22 06:53:36 host-1 sshd[8617]: debug1: restore_uid: 0/0 Nov 22 06:53:36 host-1 sshd[8617]: Failed publickey for xxx from some_ip port 50466 ssh2 Nov 22 06:53:36 host-1 sshd[8617]: debug1: do_cleanup它一直在嘗試authorized_keys2（儘管我在任何地方都已棄用），但它確實在某個時候打開了authorized_keys（帶有我的密鑰的正確文件），然後完全沒有更多關於它的內容並返回到authorized_keys2
這裡有什麼問題？
我的 sshd_config 中有：
PubkeyAuthentication yes AuthorizedKeysFile .ssh/authorized_keys並且該文件中的任何地方都沒有 authorized_keys2 字元串。是的，sshd 在測試之前重新啟動。
我想我可以只使用 authorized_keys2 但想了解這裡發生了什麼。有什麼線索嗎？
編輯：ssh -v 主機
client$ ssh -v host OpenSSH_6.0p1 Debian-3, OpenSSL 1.0.1c 10 May 2012 debug1: Reading configuration data /etc/ssh/ssh_config debug1: /etc/ssh/ssh_config line 19: Applying options for * debug1: Connecting to host [someip] port 22. debug1: Connection established. debug1: identity file /home/xxx/.ssh/id_rsa type 1 debug1: Checking blacklist file /usr/share/ssh/blacklist.RSA-2048 debug1: Checking blacklist file /etc/ssh/blacklist.RSA-2048 debug1: identity file /home/xxx/.ssh/id_rsa-cert type -1 debug1: identity file /home/xxx/.ssh/id_dsa type 2 debug1: Checking blacklist file /usr/share/ssh/blacklist.DSA-1024 debug1: Checking blacklist file /etc/ssh/blacklist.DSA-1024 debug1: identity file /home/xxx/.ssh/id_dsa-cert type -1 debug1: identity file /home/xxx/.ssh/id_ecdsa type -1 debug1: identity file /home/xxx/.ssh/id_ecdsa-cert type -1 debug1: Remote protocol version 2.0, remote software version OpenSSH_5.8p1-hpn13v10 debug1: match: OpenSSH_5.8p1-hpn13v10 pat OpenSSH_5* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_6.0p1 Debian-3 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-ctr hmac-md5 none debug1: kex: client->server aes128-ctr hmac-md5 none debug1: sending SSH2_MSG_KEX_ECDH_INIT debug1: expecting SSH2_MSG_KEX_ECDH_REPLY debug1: Server host key: ECDSA xx:xx... debug1: Host 'host' is known and matches the ECDSA host key. debug1: Found key in /home/xxx/.ssh/known_hosts:11 debug1: ssh_ecdsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: Roaming not allowed by server debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,password,keyboard-interactive debug1: Next authentication method: publickey debug1: Offering DSA public key: /home/xxx/.ssh/id_dsa debug1: Authentications that can continue: publickey,password,keyboard-interactive debug1: Offering RSA public key: /home/xxx/.ssh/id_rsa debug1: Authentications that can continue: publickey,password,keyboard-interactive debug1: Trying private key: /home/xxx/.ssh/id_ecdsa debug1: Next authentication method: keyboard-interactive debug1: Authentications that can continue: publickey,password,keyboard-interactive debug1: Next authentication method: password xxx@host's password:
authorized_keys2當它無法找到有效authorized_keys文件時，它看起來像是出於兼容性原因而退回。檢查您的 authorized_keys 文件格式是否正確。
可以
uid=1000訪問.ssh/authorized_keys目錄的使用者嗎？你在執行什麼作業系統？一些啟用 SELinux 的發行版可能不允許 sshd 從.ssh/authorized_keys. 您可以使用以下方法恢復：restorecon -R -V /home/xxx/.ssh/