Samba, 20.000 users and concurrent logons: part 2
werner.maes at cc.kuleuven.ac.be
Wed Apr 26 14:21:43 GMT 2000
I wanted to let you know that I'm able to succesfully work with 20000
users and several concurrent logon sessions.
Instead of using /etc/smbpasswd or /etc/passwd, I chose to use
I created this file using the makefile which is located in the /var/db
I suppose this is an indexed version of /etc/passwd and works a lot
than the regular flat file.
Also I changed the entries for passwd and shadow in /etc/nsswitch.conf
passwd files nis ... passwd db
shadow files nis ... to shadow db
I have two Samba-servers:
Server1 (authentication server):
security = user
encrypt passwords = no
domain logons = yes
Server2 (server with the shares):
security = server
encrypt passwords = no
password server = server1
I've tested the servers with 50 logon sessions in about half a minute.
problems: all the clients were succesfully logged on. This was NOT the
when we used /etc/passwd or /etc/smbpasswd because of the heavy CPU-
consumption of the smbd processes (idle = 0%).
Although I refered to the databasefiles in /etc/nsswitch.conf, for some
reason /etc/passwd was still used on the server with the share.
Therefore I used a standard /etc/passwd
file instead of the passwd file with the 20000 users. And this works
fine and fast.
I suppose it's in the Samba-code that it will look in /etc/passwd first
have set security = server. Can anyone confirm this? So even if you tell
to use the database files, Samba won't necessarily do so.
If you have set security = server, for what processes exactly is
I know that you NEED to have a account on the Samba server. This
is because the Unix operating system needs a username to perform various
During these tests, I encountered some errors.
* When I deleted the entry 'smbpasswd file = /etc/smbpasswd' (which I
since I have encrypt passwords = no) and tried to restart the
daemons, I got the
following error (on the server with the shares, server2):
[2000/04/20 13:04:11, 0] passdb/passdb.c:pdb_generate_sam_sid(843)
can't create private directory : No such file or directory
[2000/04/20 13:04:11, 0] smbd/server.c:main(658)
ERROR: Samba cannot create a SAM SID.
* When a user succesfully logged on, I got these strange errors on the
[2000/04/25 09:28:48, 0] smbd/password.c:password_ok(551)
Error: challenge not done for user=u19331
By the way, as you can see I work with a Redhat distribution. The
the files may be found in other directories if you work with another
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