cygwin安装sshd服务并实现无密码登录
这篇文章主要是为我在win7（64位）下搭建hadoop环境所准备的。首先参照在cygwin使用总结这篇文章在cygwin中安装所必须得软件包，然后如下进行操作：
sony@sony-VAIO~ $ ssh-host-config *** Info: Generating /etc/ssh_host_key *** Info: Generating /etc/ssh_host_rsa_key *** Info: Generating /etc/ssh_host_dsa_key *** Info: Generating /etc/ssh_host_ecdsa_key *** Info: Creating default /etc/ssh_config file *** Info: Creating default /etc/sshd_config file *** Info: Privilege separation is set to yes by default since OpenSSH 3.3. *** Info: However, this requires a non-privileged account called 'sshd'. *** Info: For more info on privilege separation read /usr/share/doc/openssh/READ ME.privsep. *** Query: Should privilege separation be used? (yes/no) no *** Info: Updating /etc/sshd_config file *** Query: Do you want to install sshd as a service? *** Query: (Say "no" if it is already installed as a service) (yes/no) yes *** Query: Enter the value of CYGWIN for the daemon: netsec] netsec *** Info: On Windows Server 2003, Windows Vista, and above, the *** Info: SYSTEM account cannot setuid to other users -- a capability *** Info: sshd requires. You need to have or to create a privileged *** Info: account. This script will help you do so. *** Info: You appear to be running Windows XP 64bit, Windows 2003 Server, *** Info: or later. On these systems, it's not possible to use the LocalSystem *** Info: account for services that can change the user id without an *** Info: explicit password (such as passwordless logins [e.g. public key *** Info: authentication] via sshd). *** Info: If you want to enable that functionality, it's required to create *** Info: a new account with special privileges (unless a similar account *** Info: already exists). This account is then used to run these special *** Info: servers. *** Info: Note that creating a new user requires that the current account *** Info: have Administrator privileges itself. *** Info: No privileged account could be found. *** Info: This script plans to use 'cyg_server'. *** Info: 'cyg_server' will only be used by registered services. *** Query: Do you want to use a different name? (yes/no) yes *** Query: Enter the new user name: sony *** Query: Reenter: sony *** Warning: Privileged account 'sony' was specified, *** Warning: but it does not have the necessary privileges. *** Warning: Continuing, but will probably use a different account. *** Warning: The specified account 'sony' does not have the *** Warning: required permissions or group memberships. This may *** Warning: cause problems if not corrected; continuing... *** Query: Please enter the password for user 'sony': *** Query: Reenter: *** Info: The sshd service has been installed under the 'sony' *** Info: account. To start the service now, call `net start sshd' or *** Info: `cygrunsrv -S sshd'. Otherwise, it will start automatically *** Info: after the next reboot. *** Info: Host configuration finished. Have fun!
$ net start sshd
发生系统错误 1069 --- 表示由于登录失败而无法启动服务
解决方法：在cmd中输入services.msc即可打开windows的服务，在服务中把密码改对就可以了。
（在上面配置ssh的过程中我的用户名是：sony 密码是：123456）
sshd服务装成功如下：
sony@sony-VAIO ~ $ net start sshd CYGWIN sshd 服务正在启动 . CYGWIN sshd 服务已经启动成功
接下来是配置无密码登陆：
sony@sony-VAIO ~ $ ssh-keygen -t rsa Generating public/private rsa key pair. Enter file in which to save the key (/home/sony/.ssh/id_rsa): Created directory '/home/sony/.ssh'. Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /home/sony/.ssh/id_rsa. Your public key has been saved in /home/sony/.ssh/id_rsa.pub. The key fingerprint is: e8:38:5e:e3:bb:cf:76:03:61:5f:f2:68:ed:a3:49:db sony@sony-VAIO The key's randomart image is: +--[ RSA 2048]----+ | | | | | | | .o . . | | ..So * | | o . + o | | o + o.. | | . + o..o+o | | . +=o.+oE. | +-----------------+ sony@sony-VAIO ~ $ cd .ssh/ sony@sony-VAIO ~/.ssh $ ls id_rsa id_rsa.pub sony@sony-VAIO ~/.ssh $ cp id_rsa.pub authorized_keys sony@sony-VAIO ~/.ssh $ ls authorized_keys id_rsa id_rsa.pub
验证如下：
sony@sony-VAIO ~/.ssh $ ssh localhost The authenticity of host 'localhost (::1)' can't be established. ECDSA key fingerprint is 5f:21:b1:24:80:92:f6:af:3e:e3:a8:f9:cb:a4:4f:ec. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added 'localhost' (ECDSA) to the list of known hosts. sony@sony-VAIO ~ $ who sony tty0 2011-11-25 15:42 (::1)
搞定 ~_~