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昨天突然无法 ssh 到云主机,但是可以 ping 通。从控制台上看没有异常,登陆进去后发现 ssh 服务没有启动,企图启动(重启)这个服务时报错 /dev/null is not a character device!:
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# /etc/init.d/ssh restart+ Q6 F# w& d p' L1 k' e2 X
Restarting OpenBSD Secure Shell server: sshd failed!
2 _7 @( @1 w' x) s$ |. c/dev/null is not a character device!.
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" A( a# v* b0 N解决办法是,删除 /dev/null 后重建一个字符设备:, s2 S4 ^, O; `/ v. d- J
# rm -f /dev/null6 f. O8 R5 s/ |& M8 \8 y. j
# mknod /dev/null c 1 31 v3 p% _7 w# F( `5 @! p% a
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然后启动(重启)ssh 就可以了:
* @' J# O, m- U3 {/ y8 c7 p% A# /etc/init.d/ssh restart
4 c' ?" A; U' B8 ^Restarting OpenBSD Secure Shell server: sshd.
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