1、vi /etc/security/limits.conf

*   soft    nofile  65535
*   hard    nofile  65535
*   soft    nproc  65535
*   hard    nproc  65535

2、vi /etc/security/limits.d/90-nproc.conf  或者 vim /etc/security/limits.d/20-nproc.conf

*          soft    nproc     4096
root       soft    nproc     unlimited
iibs       soft    nproc     unlimited

 3、vi /etc/ssh/sshd_config

修改为:uselogin=yes

4、ssh启停

#开始
systemctl start sshd.service

#停止
systemctl stop sshd.service

#重启
systemctl restart sshd.service


#状态查看
systemctl status sshd.service

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