Hi gurus, I am trying to understand the enviroment which we are using. The fact that I am asking is that this is production enviroment and I cannot change anything to experiment. Following servers are somehow related to each other, please help me figure out if my conclusions are correct.
- sphinga IS NIS MASTER FOR pharaon
- pharaon IS NIS SLAVE AND ALSO NIS CLIENT TO ITSELF:
1)
- pharaon AUTOMOUNTER ALSO READS NIS MAP CALLED auto.master PROVIDED BY NIS MASTER/SLAVE (sphinga)
- WHERE ARE ENTRIES CONTAINED IN auto.master NIS MAP MOUNTED?
- IT IS MATTER OF CONTENT OF NIS MAP ITSELF OR SOME LOCAL AUTOMOUNTER CONFIGURATION ?
- CONTENT OF auto.master NIS TABLE OBTAINED FROM MASTER/SLAVE (sphinga):
2)
- HOME DIRECTORY OF whally /u/whally IS MOUNTED FROM lecch02 WHICH IS SOME EXTERNAL STOREGE TYPE (PLEASE SEE BELLOW)
- MOUNT POINT IS DETERMINED BY MAP PROVIDED FROM NIS MASTER ? (PLEASE SEE BELLOW)
3)
- DIRECT MAP ON MASTER (sphinga) WILL BE PROPAGATED THROUGHT NIS TO pharaon
- OR MORE CLEARLY, THE DIRECT MAP IS PROPAGATED AFTER THE INDIRECT MAP RECORDS ARE "EXPANDED"
- IF THERE WAS NO +auto.master ENTRY IN CLIENTS /etc/auto_master THE EXPORTING THIS FILE ON NIS MASTER WOULD HAVE ANY SENSE ?
- FOLLOWING LINES ARE NEARLY SIMMILAR TO ypcat auto.master ON NIS CLIENT:
4)
- INDIRECT MAP (THOSE THAT WILL BE "EXPANDED") ON NIS MASTER
- SO WHATEVER IS EXPORTED ON "lecch02:/root_vdm_2/user005/home/whally" IT WILL BE MOUNTED UNDER /u/whally
- BECAUSE OF "/u auto.indir.users -rw,soft,nosuid" ENTRY IN DIRECT MAP
5)
- WHERE DOES SOLARIS HAVE NIS CONFIG FILE (LINUX HAS /etc/yp.conf), WHERE IS DECLARED WHICH FILES WILL BE NIS MAPS ETC. ?
- HOW TO DETERMINE WHICH NIS VERSION IS ACTUALLY RUNNING ?
- HOW TO FIND MASTERs/SLAVEs CLIENTS ?
- WHAT IF NIS MASTER MAP CONTAINS "/u" AS A MOUNT POINT DIRECTORY BUT CLIENT AUTOMOUNTER WHICH READS THIS MAP DO NOT HAVE "/u" DIRECTORY CREATED, WILL IT BE CREATED ON CLIENT AUTOMATICALLY ?
################################
#HERE IS ANOTHER EXAMPLE OF ENVIROMENT: #
################################
sphinga IS NIS MASTER FOR hunland:
- DIRECT MAP FILE ON hunland
- +auto_master NIS MAP IS READEN FROM NIS:
6)
- lecch IS PROBABLY SOME TYPE OF STORAGE (I DONT HAVE ACCESS ON IT)
- THIS IS WEIRD SYNTAX WHICH I DID NOT FIND IN MAN PAGES, HOW ARE THOSE DIRECTORIES MOUNTING ?
- WHAT I HAVE FIGURED IS THAT THET ARE ALL MOUNTED UNDER /lecch (BECAUSE OF "/lecch lecch_home" ENTRY IN DIRECT MAP) BUT WHAT A WIERD SYNTAX ?
- IS THE BACKSLASH IN CONFIG FILE ONLY THE ESCAPING OF NEW LINE CHARACTER ?
7)
- CONTENT OF DIRECT MAP FROM NIS (WHY auto.master NOT auto_master ?) :
- CONTENT OF INDIRECT MAP FROM NIS:
- AUTO MOUNTER FUNCTION IN PRACTICE:
8)
- IS SAFE TO UMOUNT /u/koltas MANUALY THROUGHT umount COMMAND EVEN IF IT WAS PREVIOUS MOUNTED VIA AUTOMOUTER ?
- /u/* ENTRIES ARE ALSO MOUNTED IN /lecch DIRECTORY OR POSSIBLY BETTER THE /lecch ENTRIES ARE ALSO MOUNTED UNDER /u ?
- HOW TO FIND CORRESPONDING /lecch/* DIRECTORY TO /u/koltas DIRECTORY ? (PLEASE SEE BELLOW)
9)
- NOW WE ARE EXPERIENCING PROBLEMS WITH SOME /lecch SUBDIRECTORIES BUT IT USED TO WORK, THIS COMMAND SIMPLY HANGS - WHAT COULD BE POSSIBLE PROBLEM ?
- BUT THIS (FOR ANOTHER SUB DIRECTORY UNDER /lecch) RUN AS EXPECTED
- SAME QUESTION AS ABOVE: WHY ARE ALL USERS DURING SWITCHING TO THEIR HOME DIRECTORIES MOUNTED UNDER "/u" WHERE IS THIS SPECIFIED ?
Many thanks for all your corrections
---------- Post updated 08-13-12 at 12:34 AM ---------- Previous update was 08-12-12 at 01:09 AM ----------
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