今天在两台机器A和B上设置免密码登录,A机是Centos6.5,B机是Centos7,我想通过A机免密码登录到B机,在两台机器上设置好公钥和私钥后,在A机上通过ssh连接B机,每次都是要让我手动输入密码,以前配置过也没出现这种情况,而且确认了好几次 ~/.ssh目录权限700,其下所有文件权限600,却依然失败。上网查找后,

在B机的sshd_config中将StrictModes设置为no,之后重启sshd(/bin/systemctl restart  sshd.service)后,就可以免密码登录了。

后来查了一下关于StrictModes的解释

StrictModes no #修改为no,默认为yes.如果不修改用key登陆是出现server refused our key(如果StrictModes为yes必需保证存放公钥的文件夹的拥有与登陆用户名是相同的.
“StrictModes”设置ssh在接收登录请求之前是否检查用户家目录和rhosts文件的权限和所有权。这通常是必要的,因为新手经常会把自己的目录和文件设成任何人都有写权限。)
(来源http://matt-u.iteye.com/blog/851158)

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" alt="" />

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