系统etc在启动sshd时挂起，但是"/usr/sbin/sshd -D -f /etc/ssh/sshd_config &“工作。

Question

CentOS 7.这里是/usr/lib/systemd/system/sshd.service

[Unit]
Description=OpenSSH server daemon
Documentation=man:sshd(8) man:sshd_config(5)
After=network.target sshd-keygen.service
Wants=sshd-keygen.service

[Service]
Type=notify
EnvironmentFile=/etc/sysconfig/sshd
ExecStart=/usr/sbin/sshd -D $OPTIONS
ExecReload=/bin/kill -HUP $MAINPID
KillMode=process
Restart=on-failure
RestartSec=42s

[Install]
WantedBy=multi-user.target

在sshd_config中未注释的所有内容：

HostKey /etc/ssh/ssh_host_rsa_key
HostKey /etc/ssh/ssh_host_ecdsa_key
HostKey /etc/ssh/ssh_host_ed25519_key
SyslogFacility AUTHPRIV
AuthorizedKeysFile.ssh/authorized_keys
PasswordAuthentication yes
ChallengeResponseAuthentication no
GSSAPIAuthentication yes
GSSAPICleanupCredentials no
usePAM no # Had to change it to no from yes because the connection was dropping right after successfull auth
X11Forwarding yes
Subsystemsftp/usr/libexec/openssh/sftp-server

如果需要的话我很乐意提供其他的东西。感谢你的帮助！

Answer 1

看起来你的sshd_config里有个错误

Subsystemsftp/usr/libexec/openssh/sftp-server

应该是

Subsystem sftp /usr/libexec/openssh/sftp-server

还有这个

AuthorizedKeysFile.ssh/authorized_keys

应该是

AuthorizedKeysFile .ssh/authorized_keys

此外，对配置进行语法检查。

sshd -t