[Question] The number of ssh connections is full, resulting in failure to connect to the server

### Question

当前版本：v1.6.0
监控类型：centos监控
现象：配置监控之后，ssh会占满服务器的ssh连接，导致正常用户无法通过ssh连接服务器进行运维，后续通过vnc方式连接服务器，修改ssh配置文件，将连接数改大，问题解决。


No repository file or test is named. Start by reproducing the CentOS monitoring setup from v1.6.0 while observing SSH connection usage and the monitor's connection lifecycle. Done means monitoring no longer prevents normal SSH access, with the behavior covered by an appropriate regression test or clearly documented limitation.

Written by the indexing model from the issue text.