huang zuxing blog @ home the quieter you become, the more you are able to hear.


Our cluster daily job throughput

After merged a few pools into a single cluster, daily job number throughput, average is around 150K.


Filed under: eda, IT Comments Off

disable ssh/scp , configure freenx login only

Friend asked how to disable users ssh or scp to the machine which has freenx installed .   only allow users nxclient login.

1. enable in /etc/pam.d/system-auth






2. configure /etc/security/access.conf ( please read this file,  follow the format)

below is a simple one, only allow user mike nxclient login; and allow user jackie ssh from

+ : root : ALL
+: jackie:
+ : nx : ALL
- : ALL : ALL


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