Linux /dev/null 对ssh登录的影响

远程ssh出现报错

ssh_exchange_identification: Connection closed by remote host

到现场发现,现场也不能使用ssh,一些应用也无法使用,例如apache等.

下面是messages信息

Jul 15 00:05:08 www udevd-event[13318]: run_program: open /dev/null failed: No such device or address

 Jul 15 00:05:08 www udevd-event[13319]: run_program: open /dev/null failed: No such device or address

 Jul 15 00:05:08 www udevd-event[13320]: run_program: open /dev/null failed: No such device or address

 Jul 15 00:05:08 www udevd-event[13322]: run_program: open /dev/null failed: No such device or address

 Jul 15 00:48:14 www smbd[13403]: [2010/07/15 00:48:14, 0] lib/util.c:close_low_fds(698)

 Jul 15 00:48:14 www smbd[13403]:  Can't open /dev/null

 Jul 15 03:09:13 www smbd[13668]: [2010/07/15 03:09:13, 0] lib/util.c:close_low_fds(698)

 Jul 15 03:09:13 www smbd[13668]:  Can't open /dev/null

 Jul 15 05:43:13 www smbd[15774]: [2010/07/15 05:43:13, 0] lib/util.c:close_low_fds(698)

 Jul 15 05:43:13 www smbd[15774]:  Can't open /dev/null

解决方法:

/dev/null这个文件有问题

rm /dev/null

mknod /dev/null c 1 3

 chmod 666 /dev/null

问题解决。