su 指令出現的問題: su: cannot set user id: Resource temporarily unavailable

IT_man

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徵狀:

某天因為需要從root su 到一般的user,指令如下:
& E5 u3 v: s% ]#su someuser  結果show error
* z8 \8 T. {" i( y; f9 Z+ v( qsu: cannot set user id: Resource temporarily unavailable

查了google得知根本原因是process 最大限制是 1024:
- @. E4 N$ N% i/ a4 @
9 C0 f* j  x9 ^# v( x' k* S/ B#cat /etc/security/limits.d/90-nproc.conf
# Default limit for number of user's processes to prevent
# accidental fork bombs.
# See rhbz #432903 for reasoning.
- W1 Q6 [- [/ J; s
+ J& g- |8 i3 A*          soft    nproc     1024     ====>將1024改成大一點如4096就 OK
- ]5 M3 w. X4 u& Broot       soft    nproc     unlimited




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