Large Passwd Files

2007-12-25 7:25:00

The following are the responses I received to my query about sites

using yp passwd files larger than 10000 entries. The response from

Stergios at Stanford matches our experiences.

We are currently testing an 18000 entry yp passwd file. The results

seem to suggest that ypxfrs are an incredibly long, 4-5 minutes per secondary.

Thus yppasswd updates load down your server and may result in

inconsistent secondaries.

Also you don't want to finger a client without the -e option. Any

program like finger which reads through the entire passwd file entry

at a time will take forever.

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Date: Wed, 29 May 91 10:25:19 PDT

From: tonytran@leland.stanford.edu

Message-Id: <9105291725.AA12409@sunscreen.stanford.edu>

To: ronr@midway.uchicago.edu

Subject: re: Large NIS passwd files

Cc: tonytran@leland.stanford.edu

>Is anyone sucessfully running with large (> 10000 entry) NIS passwd files?

Talk to Paul Traina < Paul_Traina@ir.stanford.edu> who is the postmaster

at Stanford Univ. The last time I look at the yppasswd file, it was

pretty close to 10000 entries.

I checked with SUN, and in spite of the fact that they have around

20,000 employees (both permanent + temps), they have several NIS domains,

each has less than 1000 entries

Tony

Date: Wed, 29 May 91 12:19:58 BST

From: Alastair Young <alastair@eucad.co.uk>

Message-Id: <9105291119.AA22600@eucad.co.uk>

To: ronr@midway.uchicago.edu

Subject: Re: Large NIS passwd files

Ours is about 2000 lines. Works ok.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

 Alastair Young Systems Supervisor (SMTS) _ Trollstigen

 European CAD Developments Limited aka EuCAD )/___ ___ or bust

 EuCAD/Cadence mail: alastair +44-31-225-3434 __/(___)##| | ARIEL NH

 Full Email Address: alastair@eucad.co.uk / /\\|| \ / \__| NVA927

 9 Wemyss Place, Edinburgh, Scotland EH3 6DH \__/ ---- \__/~~~~~ 1991

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Date: Tue, 28 May 91 14:00:23 EDT

From: Kennedy Lemke <Kennedy_J_Lemke@princeton.edu>

Message-Id: <9105281800.AA03654@narnia.princeton.edu>

To: ronr@midway.uchicago.edu

Subject: Re: Large NIS passwd files

Please summarize. I'm currently doing around 4K entries, but am

considering going to around 10K.

                                Kennedy Lemke

                                Systems Programmer

                                CIT--87 Prospect

                                Princeton University

                                Princeton, New Jersey 08544

Work Phone: (609) 258-6033 Internet: lemke@Princeton.EDU

Fax Phone: (609) 258-3943 uucp: ...rutgers!princeton!lemke

Home Phone: (609) 275-7298 Bitnet: LEMKE@PUCC.BITNET

Date: Tue, 28 May 91 11:23:56 PDT

From: stergios@stanford.edu (Stergios)

Message-Id: <9105281823.AA03459@kt22.Stanford.EDU>

To: Ron Rusnak <ronr@midway.uchicago.edu>

Subject: Re: Large NIS passwd files

References: <CMM.0.90.0.675441139.ronr@teddybear.uchicago.edu>

Reply-To: stergios@kt22.stanford.edu

close. we got 9600 entries. its very problematic with chfn, and

passwd; with that many users the master tends to be always crunching

up new dbm files. transfers to slaves don't always go so well and

the maps get screwed as a result, you find this out when users lose

acceess to clients who are only looking at the bad slave. with

multiple vendors (we have sun, next, dec, ibm) you'll find out some

vendor's machine will only litsen (as a client) to a like machine (for

a server) and vice versa.

but it does work. we're looking into switching over to the athena

software.

sm

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