su xtbank 切换用户的时候报错:su: cannot set user id: Resource temporarily unavailable
2019-08-13 10:45
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本文链接:https://blog.csdn.net/MaleLiu/article/details/99412768
1、今天在进入服务器的时候一直进不去,su root 切换成root用户可以进入,表示很疑惑,然后在root用户下面切换xtbank用户的时候报错了!!! 当然只要有错误我们就能定位到问题。
su: cannot set user id: Resource temporarily unavailable --提示我们资源不可用
2、先看下这个xtbank用户的进程数是多少:
[code]less /etc/security/limits.d/90-nproc.conf
可以看到设置的最大线程数是1024,现在再看下xtbank用户开启了多少进程
[code]lsof -u hdfs | wc -l
可以看到已经大大的超出了系统的最大线程数,使用命令:
[code]vi /etc/security/limits.d/90-nproc.conf
将线程数调大,然后 :wq 保存退出,再切换用户成功
具体原因是:linux操作系统默认最大允许进程数是1024. 随着应用的增加,我们的需求已超过了1024
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