5:32 a.m.
---------- Forwarded message ----------
From: "Marco Pizzoli" <marco.pizzoli(a)gmail.com>
Date: 5 Apr 2011 14:29
Subject: Re: Tuning openldap, nss_ldap and pam_ldap
To: "c0re" <nr1c0re(a)gmail.com>
Hi,
If it was the same problem that I had some time ago, it was due to idle
connections that I gold slapd to close after x seconds.
Check yours, and eventually set a keep alive parameter on your client,
nss_ldap.
Regards
Marco
On 5 Apr 2011 13:44, "c0re" <nr1c0re(a)gmail.com> wrote:
Hello openldap users!
I've got Openldap 2.4.23 that used as authentication and authorization
server
for about 40-50 servers.
OS - FreeBSD 8.1.
It's not heavy loaded.
openldap# top -SP
last pid: 45647; load averages: 0.15, 0.15, 0.07
up 81+22:29:21 15:18:57
99 processes: 3 running, 80 sleeping, 16 waiting
CPU 0: 0.7% user, 0.0% nice, 0.0% system, 0.0% interrupt, 99.3% idle
CPU 1: 0.4% user, 0.0% nice, 0.7% system, 0.0% interrupt, 98.9% idle
Mem: 79M Active, 1402M Inact, 379M Wired, 84M Cache, 213M Buf, 31M Free
Swap: 4060M Total, 8K Used, 4060M Free
PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU
COMMAND
11 root 2 171 ki31 0K 32K CPU0 0 3874.8 200.00%
idle
4773 ldap 18 44 0 398M 53748K ucond 1 41.1H 0.00% slapd
But on my servers sometimes I see in logs something like
on FTP-server:
Mar 25 21:55:32 someftp ftpd: nss_ldap: could not search LDAP server -
Server is
unavailable
Authentication works fine, no problems. But want to find out what can be
wrong.
To understand this problem I installed ldap-stats utility and made it run:
/var/log/debug.log - it's half day openldap server usage log.
openldap# ldap-stats -c 1000 /var/log/debug.log
Report Generated on Tue Apr 5 15:16:47 2011
--------------------------------------------
Processed "/var/log/debug.log": Apr 5 00:00:00 - Apr 5 15:17:33
Operation totals
----------------
Total operations : 913845
Total connections : 101226
Total authentication failures : 2
Total binds : 99700
Total unbinds : 99181
Total searches : 714964
Total compares : 7
Total modifications : 0
Total modrdns : 0
Total additions : 0
Total deletions : 0
Unindexed attribute requests : 0
Operations per connection : 9.03
# Uses Filter
---------- -----------------------------------------------------------
615504 (&(objectClass=posixAccount)(uid=mailer-daemon))
90699 (&(objectClass=posixGroup))
6833 (&(objectClass=posixAccount)(uid=root))
2236 (&(objectClass=posixAccount)(uid=hiddenuser1))
669 (&(objectClass=posixGroup)(memberUid=root))
318 (&(objectClass=posixAccount)(uid=testacc))
87 (&(objectClass=posixGroup)(memberUid=postfix))
87 (&(objectClass=posixAccount)(uid=postfix))
81 (objectClass=posixAccount)
68 (&(objectClass=posixAccount)(uid=debian-exim))
68 (&(objectClass=posixGroup)(memberUid=Debian-exim))
39 (&(objectClass=posixAccount)(uid=normaluser))
34 (&(objectClass=posixAccount)(uidNumber=7333))
30 (&(objectClass=posixGroup)(memberUid=hiddenuser1))
29 (&(objectClass=posixGroup)(memberUid=chelovek))
29 (&(objectClass=posixAccount)(uid=chelovek))
27 (&(objectClass=posixAccount)(uid=user0))
23 (&(objectClass=posixAccount)(uid=nobody))
21 (&(objectClass=posixAccount)(uid=user1))
18 (&(objectClass=posixAccount)(uid=user2))
16 (&(objectClass=posixAccount)(uid=user3))
15 (&(objectClass=posixAccount)(uid=user4))
12 (&(objectClass=posixAccount)(uid=user5))
11 (&(objectClass=posixAccount)(uidNumber=7330))
10 (&(objectClass=posixAccount)(uid=user15))
9 (&(objectClass=posixAccount)(uid=user16))
8 (&(objectClass=posixAccount)(uidNumber=7333))
6 (&(objectClass=posixAccount)(uid=user6))
5 (&(objectClass=posixAccount)(uid=user7))
5 (cn=defaults)
4 (&(objectClass=posixAccount)(uidNumber=7228))
4 (&(objectClass=shadowAccount)(uid=user1))
4 (&(objectClass=posixAccount)(uid=user9))
4 (&(objectClass=posixAccount)(uid=user10))
4 (&(objectClass=posixAccount)(uid=user11))
3 (&(objectClass=posixAccount)(uid=user12))
3 (&(objectClass=posixAccount)(uid=user13))
3 (&(objectClass=posixAccount)(uid=user14))
...............
and MANY others that has 1 use in this stats.
I think this many queries from mail relay server.
* user1 and etc - just hidden real users.
What can I do to tune nss? Can you point me in a right direction? Do not
know what
to look at.
If you need any additional information, logs and etc - I'll
provide it.
Thanks in advance!
7:11 a.m.
New subject: Tuning openldap, nss_ldap and pam_ldap
nss_ldap.conf:
timelimit 10
bind_timelimit 5
bind_policy soft
nss_connect_policy oneshot
I think every mail that come through my mail relay ask openldap about nss...
How can I workaround this?
2011/4/5 Marco Pizzoli <marco.pizzoli(a)gmail.com>
---------- Forwarded message ----------
From: "Marco Pizzoli" <marco.pizzoli(a)gmail.com>
Date: 5 Apr 2011 14:29
Subject: Re: Tuning openldap, nss_ldap and pam_ldap
To: "c0re" <nr1c0re(a)gmail.com>
Hi,
If it was the same problem that I had some time ago, it was due to idle
connections that I gold slapd to close after x seconds.
Check yours, and eventually set a keep alive parameter on your client,
nss_ldap.
Regards
Marco
On 5 Apr 2011 13:44, "c0re" <nr1c0re(a)gmail.com> wrote:
>
> Hello openldap users!
>
> I've got Openldap 2.4.23 that used as authentication and authorization
server for about 40-50 servers.
> OS - FreeBSD 8.1.
>
> It's not heavy loaded.
>
> openldap# top -SP
> last pid: 45647; load averages: 0.15, 0.15, 0.07
up 81+22:29:21 15:18:57
> 99 processes: 3 running, 80 sleeping, 16 waiting
> CPU 0: 0.7% user, 0.0% nice, 0.0% system, 0.0% interrupt, 99.3% idle
> CPU 1: 0.4% user, 0.0% nice, 0.7% system, 0.0% interrupt, 98.9% idle
> Mem: 79M Active, 1402M Inact, 379M Wired, 84M Cache, 213M Buf, 31M Free
> Swap: 4060M Total, 8K Used, 4060M Free
>
> PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU
COMMAND
> 11 root 2 171 ki31 0K 32K CPU0 0 3874.8 200.00% idle
> 4773 ldap 18 44 0 398M 53748K ucond 1 41.1H 0.00% slapd
>
> But on my servers sometimes I see in logs something like
>
> on FTP-server:
> Mar 25 21:55:32 someftp ftpd: nss_ldap: could not search LDAP server -
Server is unavailable
>
> Authentication works fine, no problems. But want to find out what can be
wrong.
>
> To understand this problem I installed ldap-stats utility and made it
run:
>
> /var/log/debug.log - it's half day openldap server usage log.
>
> openldap# ldap-stats -c 1000 /var/log/debug.log
>
>
> Report Generated on Tue Apr 5 15:16:47 2011
> --------------------------------------------
> Processed "/var/log/debug.log": Apr 5 00:00:00 - Apr 5 15:17:33
>
>
> Operation totals
> ----------------
> Total operations : 913845
> Total connections : 101226
> Total authentication failures : 2
> Total binds : 99700
> Total unbinds : 99181
> Total searches : 714964
> Total compares : 7
> Total modifications : 0
> Total modrdns : 0
> Total additions : 0
> Total deletions : 0
> Unindexed attribute requests : 0
> Operations per connection : 9.03
>
>
> # Uses Filter
> ---------- -----------------------------------------------------------
> 615504 (&(objectClass=posixAccount)(uid=mailer-daemon))
> 90699 (&(objectClass=posixGroup))
> 6833 (&(objectClass=posixAccount)(uid=root))
> 2236 (&(objectClass=posixAccount)(uid=hiddenuser1))
> 669 (&(objectClass=posixGroup)(memberUid=root))
> 318 (&(objectClass=posixAccount)(uid=testacc))
> 87 (&(objectClass=posixGroup)(memberUid=postfix))
> 87 (&(objectClass=posixAccount)(uid=postfix))
> 81 (objectClass=posixAccount)
> 68 (&(objectClass=posixAccount)(uid=debian-exim))
> 68 (&(objectClass=posixGroup)(memberUid=Debian-exim))
> 39 (&(objectClass=posixAccount)(uid=normaluser))
> 34 (&(objectClass=posixAccount)(uidNumber=7333))
> 30 (&(objectClass=posixGroup)(memberUid=hiddenuser1))
> 29 (&(objectClass=posixGroup)(memberUid=chelovek))
> 29 (&(objectClass=posixAccount)(uid=chelovek))
> 27 (&(objectClass=posixAccount)(uid=user0))
> 23 (&(objectClass=posixAccount)(uid=nobody))
> 21 (&(objectClass=posixAccount)(uid=user1))
> 18 (&(objectClass=posixAccount)(uid=user2))
> 16 (&(objectClass=posixAccount)(uid=user3))
> 15 (&(objectClass=posixAccount)(uid=user4))
> 12 (&(objectClass=posixAccount)(uid=user5))
> 11 (&(objectClass=posixAccount)(uidNumber=7330))
> 10 (&(objectClass=posixAccount)(uid=user15))
> 9 (&(objectClass=posixAccount)(uid=user16))
> 8 (&(objectClass=posixAccount)(uidNumber=7333))
> 6 (&(objectClass=posixAccount)(uid=user6))
> 5 (&(objectClass=posixAccount)(uid=user7))
> 5 (cn=defaults)
> 4 (&(objectClass=posixAccount)(uidNumber=7228))
> 4 (&(objectClass=shadowAccount)(uid=user1))
> 4 (&(objectClass=posixAccount)(uid=user9))
> 4 (&(objectClass=posixAccount)(uid=user10))
> 4 (&(objectClass=posixAccount)(uid=user11))
> 3 (&(objectClass=posixAccount)(uid=user12))
> 3 (&(objectClass=posixAccount)(uid=user13))
> 3 (&(objectClass=posixAccount)(uid=user14))
> ...............
> and MANY others that has 1 use in this stats.
> I think this many queries from mail relay server.
> * user1 and etc - just hidden real users.
>
> What can I do to tune nss? Can you point me in a right direction? Do not
know what to look at.
> If you need any additional information, logs and etc - I'll provide it.
>
> Thanks in advance!
>
7:30 a.m.
New subject: Tuning openldap, nss_ldap and pam_ldap
On 5 Apr 2011 16:11, "c0re" <nr1c0re(a)gmail.com> wrote:
nss_ldap.conf:
timelimit 10
bind_timelimit 5
bind_policy soft
nss_connect_policy oneshot
I think every mail that come through my mail relay ask openldap about
nss... How
can I workaround this?
2011/4/5 Marco Pizzoli <marco.pizzoli(a)gmail.com>
>
> ---------- Forwarded message ----------
> From: "Marco Pizzoli" <marco.pizzoli(a)gmail.com>
> Date: 5 Apr 2011 14:29
> Subject: Re: Tuning openldap, nss_ldap and pam_ldap
> To: "c0re" <nr1c0re(a)gmail.com>
>
> Hi,
> If it was the same problem that I had some time ago, it was due to idle
connections that I gold slapd to close after x seconds.
> Check yours, and eventually set a keep alive parameter on your
client,
nss_ldap.
>
> Regards
> Marco
>
> On 5 Apr 2011 13:44, "c0re" <nr1c0re(a)gmail.com> wrote:
> >
> > Hello openldap users!
> >
> > I've got Openldap 2.4.23 that used as authentication and authorization
server for about 40-50 servers.
> > OS - FreeBSD 8.1.
> >
> > It's not heavy loaded.
> >
> > openldap# top -SP
> > last pid: 45647; load averages: 0.15, 0.15, 0.07
up 81+22:29:21 15:18:57
> > 99 processes: 3 running, 80 sleeping, 16 waiting
> > CPU 0: 0.7% user, 0.0% nice, 0.0% system, 0.0% interrupt, 99.3%
idle
> > CPU 1: 0.4% user, 0.0% nice, 0.7% system, 0.0%
interrupt, 98.9%
idle
> > Mem: 79M Active, 1402M Inact, 379M Wired, 84M Cache, 213M
Buf, 31M Free
> > Swap: 4060M Total, 8K Used, 4060M Free
> >
> > PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU
COMMAND
> > 11 root 2 171 ki31 0K 32K CPU0 0 3874.8
200.00%
idle
> > 4773 ldap 18 44 0 398M 53748K ucond 1 41.1H
0.00%
slapd
> >
> > But on my servers sometimes I see in logs something like
> >
> > on FTP-server:
> > Mar 25 21:55:32 someftp ftpd: nss_ldap: could not search LDAP server -
Server is unavailable
> >
> > Authentication works fine, no problems. But want to find out what can
be
wrong.
> >
> > To understand this problem I installed ldap-stats utility and made it
run:
> >
> > /var/log/debug.log - it's half day openldap server usage log.
> >
> > openldap# ldap-stats -c 1000 /var/log/debug.log
> >
> >
> > Report Generated on Tue Apr 5 15:16:47 2011
> > --------------------------------------------
> > Processed "/var/log/debug.log": Apr 5 00:00:00 - Apr 5 15:17:33
> >
> >
> > Operation totals
> > ----------------
> > Total operations : 913845
> > Total connections : 101226
> > Total authentication failures : 2
> > Total binds : 99700
> > Total unbinds : 99181
> > Total searches : 714964
> > Total compares : 7
> > Total modifications : 0
> > Total modrdns : 0
> > Total additions : 0
> > Total deletions : 0
> > Unindexed attribute requests : 0
> > Operations per connection : 9.03
> >
> >
> > # Uses Filter
> > ----------
-----------------------------------------------------------
> > 615504
(&(objectClass=posixAccount)(uid=mailer-daemon))
> > 90699 (&(objectClass=posixGroup))
> > 6833 (&(objectClass=posixAccount)(uid=root))
> > 2236 (&(objectClass=posixAccount)(uid=hiddenuser1))
> > 669 (&(objectClass=posixGroup)(memberUid=root))
> > 318 (&(objectClass=posixAccount)(uid=testacc))
> > 87 (&(objectClass=posixGroup)(memberUid=postfix))
> > 87 (&(objectClass=posixAccount)(uid=postfix))
> > 81 (objectClass=posixAccount)
> > 68 (&(objectClass=posixAccount)(uid=debian-exim))
> > 68 (&(objectClass=posixGroup)(memberUid=Debian-exim))
> > 39 (&(objectClass=posixAccount)(uid=normaluser))
> > 34 (&(objectClass=posixAccount)(uidNumber=7333))
> > 30 (&(objectClass=posixGroup)(memberUid=hiddenuser1))
> > 29 (&(objectClass=posixGroup)(memberUid=chelovek))
> > 29 (&(objectClass=posixAccount)(uid=chelovek))
> > 27 (&(objectClass=posixAccount)(uid=user0))
> > 23 (&(objectClass=posixAccount)(uid=nobody))
> > 21 (&(objectClass=posixAccount)(uid=user1))
> > 18 (&(objectClass=posixAccount)(uid=user2))
> > 16 (&(objectClass=posixAccount)(uid=user3))
> > 15 (&(objectClass=posixAccount)(uid=user4))
> > 12 (&(objectClass=posixAccount)(uid=user5))
> > 11 (&(objectClass=posixAccount)(uidNumber=7330))
> > 10 (&(objectClass=posixAccount)(uid=user15))
> > 9 (&(objectClass=posixAccount)(uid=user16))
> > 8 (&(objectClass=posixAccount)(uidNumber=7333))
> > 6 (&(objectClass=posixAccount)(uid=user6))
> > 5 (&(objectClass=posixAccount)(uid=user7))
> > 5 (cn=defaults)
> > 4 (&(objectClass=posixAccount)(uidNumber=7228))
> > 4 (&(objectClass=shadowAccount)(uid=user1))
> > 4 (&(objectClass=posixAccount)(uid=user9))
> > 4 (&(objectClass=posixAccount)(uid=user10))
> > 4 (&(objectClass=posixAccount)(uid=user11))
> > 3 (&(objectClass=posixAccount)(uid=user12))
> > 3 (&(objectClass=posixAccount)(uid=user13))
> > 3 (&(objectClass=posixAccount)(uid=user14))
> > ...............
> > and MANY others that has 1 use in this stats.
> > I think this many queries from mail relay server.
> > * user1 and etc - just hidden real users.
> >
> > What can I do to tune nss? Can you point me in a right direction? Do
not
know what to look at.
> > If you need any additional information, logs and etc -
I'll provide it.
> >
> > Thanks in advance!
> >
Have you got pam_ldap.conf configured?
If so, what are the corresponding configurations related to ldap server
connections?
7:51 a.m.
New subject: Tuning openldap, nss_ldap and pam_ldap
/usr/local/etc/ldap.conf
....
timelimit 10
bind_timelimit 5
bind_policy soft
....
2011/4/5 Marco Pizzoli <marco.pizzoli(a)gmail.com>
On 5 Apr 2011 16:11, "c0re" <nr1c0re(a)gmail.com> wrote:
>
> nss_ldap.conf:
>
> timelimit 10
> bind_timelimit 5
> bind_policy soft
> nss_connect_policy oneshot
>
> I think every mail that come through my mail relay ask openldap about
nss... How can I workaround this?
>
> 2011/4/5 Marco Pizzoli <marco.pizzoli(a)gmail.com>
>>
>> ---------- Forwarded message ----------
>> From: "Marco Pizzoli" <marco.pizzoli(a)gmail.com>
>> Date: 5 Apr 2011 14:29
>> Subject: Re: Tuning openldap, nss_ldap and pam_ldap
>> To: "c0re" <nr1c0re(a)gmail.com>
>>
>> Hi,
>> If it was the same problem that I had some time ago, it was due to idle
connections that I gold slapd to close after x seconds.
>> Check yours, and eventually set a keep alive parameter on your client,
nss_ldap.
>>
>> Regards
>> Marco
>>
>> On 5 Apr 2011 13:44, "c0re" <nr1c0re(a)gmail.com> wrote:
>> >
>> > Hello openldap users!
>> >
>> > I've got Openldap 2.4.23 that used as authentication and authorization
server for about 40-50 servers.
>> > OS - FreeBSD 8.1.
>> >
>> > It's not heavy loaded.
>> >
>> > openldap# top -SP
>> > last pid: 45647; load averages: 0.15, 0.15, 0.07
up 81+22:29:21 15:18:57
>> > 99 processes: 3 running, 80 sleeping, 16 waiting
>> > CPU 0: 0.7% user, 0.0% nice, 0.0% system, 0.0% interrupt, 99.3%
idle
>> > CPU 1: 0.4% user, 0.0% nice, 0.7% system, 0.0% interrupt, 98.9%
idle
>> > Mem: 79M Active, 1402M Inact, 379M Wired, 84M Cache, 213M Buf, 31M
Free
>> > Swap: 4060M Total, 8K Used, 4060M Free
>> >
>> > PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU
COMMAND
>> > 11 root 2 171 ki31 0K 32K CPU0 0 3874.8 200.00%
idle
>> > 4773 ldap 18 44 0 398M 53748K ucond 1 41.1H 0.00%
slapd
>> >
>> > But on my servers sometimes I see in logs something like
>> >
>> > on FTP-server:
>> > Mar 25 21:55:32 someftp ftpd: nss_ldap: could not search LDAP server -
Server is unavailable
>> >
>> > Authentication works fine, no problems. But want to find out what can
be wrong.
>> >
>> > To understand this problem I installed ldap-stats utility and made it
run:
>> >
>> > /var/log/debug.log - it's half day openldap server usage log.
>> >
>> > openldap# ldap-stats -c 1000 /var/log/debug.log
>> >
>> >
>> > Report Generated on Tue Apr 5 15:16:47 2011
>> > --------------------------------------------
>> > Processed "/var/log/debug.log": Apr 5 00:00:00 - Apr 5
15:17:33
>> >
>> >
>> > Operation totals
>> > ----------------
>> > Total operations : 913845
>> > Total connections : 101226
>> > Total authentication failures : 2
>> > Total binds : 99700
>> > Total unbinds : 99181
>> > Total searches : 714964
>> > Total compares : 7
>> > Total modifications : 0
>> > Total modrdns : 0
>> > Total additions : 0
>> > Total deletions : 0
>> > Unindexed attribute requests : 0
>> > Operations per connection : 9.03
>> >
>> >
>> > # Uses Filter
>> > ----------
-----------------------------------------------------------
>> > 615504 (&(objectClass=posixAccount)(uid=mailer-daemon))
>> > 90699 (&(objectClass=posixGroup))
>> > 6833 (&(objectClass=posixAccount)(uid=root))
>> > 2236 (&(objectClass=posixAccount)(uid=hiddenuser1))
>> > 669 (&(objectClass=posixGroup)(memberUid=root))
>> > 318 (&(objectClass=posixAccount)(uid=testacc))
>> > 87 (&(objectClass=posixGroup)(memberUid=postfix))
>> > 87 (&(objectClass=posixAccount)(uid=postfix))
>> > 81 (objectClass=posixAccount)
>> > 68 (&(objectClass=posixAccount)(uid=debian-exim))
>> > 68 (&(objectClass=posixGroup)(memberUid=Debian-exim))
>> > 39 (&(objectClass=posixAccount)(uid=normaluser))
>> > 34 (&(objectClass=posixAccount)(uidNumber=7333))
>> > 30 (&(objectClass=posixGroup)(memberUid=hiddenuser1))
>> > 29 (&(objectClass=posixGroup)(memberUid=chelovek))
>> > 29 (&(objectClass=posixAccount)(uid=chelovek))
>> > 27 (&(objectClass=posixAccount)(uid=user0))
>> > 23 (&(objectClass=posixAccount)(uid=nobody))
>> > 21 (&(objectClass=posixAccount)(uid=user1))
>> > 18 (&(objectClass=posixAccount)(uid=user2))
>> > 16 (&(objectClass=posixAccount)(uid=user3))
>> > 15 (&(objectClass=posixAccount)(uid=user4))
>> > 12 (&(objectClass=posixAccount)(uid=user5))
>> > 11 (&(objectClass=posixAccount)(uidNumber=7330))
>> > 10 (&(objectClass=posixAccount)(uid=user15))
>> > 9 (&(objectClass=posixAccount)(uid=user16))
>> > 8 (&(objectClass=posixAccount)(uidNumber=7333))
>> > 6 (&(objectClass=posixAccount)(uid=user6))
>> > 5 (&(objectClass=posixAccount)(uid=user7))
>> > 5 (cn=defaults)
>> > 4 (&(objectClass=posixAccount)(uidNumber=7228))
>> > 4 (&(objectClass=shadowAccount)(uid=user1))
>> > 4 (&(objectClass=posixAccount)(uid=user9))
>> > 4 (&(objectClass=posixAccount)(uid=user10))
>> > 4 (&(objectClass=posixAccount)(uid=user11))
>> > 3 (&(objectClass=posixAccount)(uid=user12))
>> > 3 (&(objectClass=posixAccount)(uid=user13))
>> > 3 (&(objectClass=posixAccount)(uid=user14))
>> > ...............
>> > and MANY others that has 1 use in this stats.
>> > I think this many queries from mail relay server.
>> > * user1 and etc - just hidden real users.
>> >
>> > What can I do to tune nss? Can you point me in a right direction? Do
not know what to look at.
>> > If you need any additional information, logs and etc - I'll provide
it.
>> >
>> > Thanks in advance!
>> >
>
>
Have you got pam_ldap.conf configured?
If so, what are the corresponding configurations related to ldap server
connections?
10:14 a.m.
New subject: Tuning openldap, nss_ldap and pam_ldap
Check your idle timelimit on slapd and then try to set the nss_ldap
directive *idle_timelimit* to a value minor than it.
It should work
Let me know
Marco
On Tue, Apr 5, 2011 at 4:51 PM, c0re <nr1c0re(a)gmail.com> wrote:
/usr/local/etc/ldap.conf
....
timelimit 10
bind_timelimit 5
bind_policy soft
....
2011/4/5 Marco Pizzoli <marco.pizzoli(a)gmail.com>
>
> On 5 Apr 2011 16:11, "c0re" <nr1c0re(a)gmail.com> wrote:
> >
> > nss_ldap.conf:
> >
> > timelimit 10
> > bind_timelimit 5
> > bind_policy soft
> > nss_connect_policy oneshot
> >
> > I think every mail that come through my mail relay ask openldap about
> nss... How can I workaround this?
> >
> > 2011/4/5 Marco Pizzoli <marco.pizzoli(a)gmail.com>
> >>
> >> ---------- Forwarded message ----------
> >> From: "Marco Pizzoli" <marco.pizzoli(a)gmail.com>
> >> Date: 5 Apr 2011 14:29
> >> Subject: Re: Tuning openldap, nss_ldap and pam_ldap
> >> To: "c0re" <nr1c0re(a)gmail.com>
> >>
> >> Hi,
> >> If it was the same problem that I had some time ago, it was due to idle
> connections that I gold slapd to close after x seconds.
> >> Check yours, and eventually set a keep alive parameter on your client,
> nss_ldap.
> >>
> >> Regards
> >> Marco
> >>
> >> On 5 Apr 2011 13:44, "c0re" <nr1c0re(a)gmail.com> wrote:
> >> >
> >> > Hello openldap users!
> >> >
> >> > I've got Openldap 2.4.23 that used as authentication and
> authorization server for about 40-50 servers.
> >> > OS - FreeBSD 8.1.
> >> >
> >> > It's not heavy loaded.
> >> >
> >> > openldap# top -SP
> >> > last pid: 45647; load averages: 0.15, 0.15, 0.07
>
> up 81+22:29:21 15:18:57
> >> > 99 processes: 3 running, 80 sleeping, 16 waiting
> >> > CPU 0: 0.7% user, 0.0% nice, 0.0% system, 0.0% interrupt, 99.3%
> idle
> >> > CPU 1: 0.4% user, 0.0% nice, 0.7% system, 0.0% interrupt, 98.9%
> idle
> >> > Mem: 79M Active, 1402M Inact, 379M Wired, 84M Cache, 213M Buf, 31M
> Free
> >> > Swap: 4060M Total, 8K Used, 4060M Free
> >> >
> >> > PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU
> COMMAND
> >> > 11 root 2 171 ki31 0K 32K CPU0 0 3874.8 200.00%
> idle
> >> > 4773 ldap 18 44 0 398M 53748K ucond 1 41.1H 0.00%
> slapd
> >> >
> >> > But on my servers sometimes I see in logs something like
> >> >
> >> > on FTP-server:
> >> > Mar 25 21:55:32 someftp ftpd: nss_ldap: could not search LDAP server
> - Server is unavailable
> >> >
> >> > Authentication works fine, no problems. But want to find out what can
> be wrong.
> >> >
> >> > To understand this problem I installed ldap-stats utility and made it
> run:
> >> >
> >> > /var/log/debug.log - it's half day openldap server usage log.
> >> >
> >> > openldap# ldap-stats -c 1000 /var/log/debug.log
> >> >
> >> >
> >> > Report Generated on Tue Apr 5 15:16:47 2011
> >> > --------------------------------------------
> >> > Processed "/var/log/debug.log": Apr 5 00:00:00 - Apr 5
15:17:33
> >> >
> >> >
> >> > Operation totals
> >> > ----------------
> >> > Total operations : 913845
> >> > Total connections : 101226
> >> > Total authentication failures : 2
> >> > Total binds : 99700
> >> > Total unbinds : 99181
> >> > Total searches : 714964
> >> > Total compares : 7
> >> > Total modifications : 0
> >> > Total modrdns : 0
> >> > Total additions : 0
> >> > Total deletions : 0
> >> > Unindexed attribute requests : 0
> >> > Operations per connection : 9.03
> >> >
> >> >
> >> > # Uses Filter
> >> > ----------
> -----------------------------------------------------------
> >> > 615504 (&(objectClass=posixAccount)(uid=mailer-daemon))
> >> > 90699 (&(objectClass=posixGroup))
> >> > 6833 (&(objectClass=posixAccount)(uid=root))
> >> > 2236 (&(objectClass=posixAccount)(uid=hiddenuser1))
> >> > 669 (&(objectClass=posixGroup)(memberUid=root))
> >> > 318 (&(objectClass=posixAccount)(uid=testacc))
> >> > 87 (&(objectClass=posixGroup)(memberUid=postfix))
> >> > 87 (&(objectClass=posixAccount)(uid=postfix))
> >> > 81 (objectClass=posixAccount)
> >> > 68 (&(objectClass=posixAccount)(uid=debian-exim))
> >> > 68 (&(objectClass=posixGroup)(memberUid=Debian-exim))
> >> > 39 (&(objectClass=posixAccount)(uid=normaluser))
> >> > 34 (&(objectClass=posixAccount)(uidNumber=7333))
> >> > 30 (&(objectClass=posixGroup)(memberUid=hiddenuser1))
> >> > 29 (&(objectClass=posixGroup)(memberUid=chelovek))
> >> > 29 (&(objectClass=posixAccount)(uid=chelovek))
> >> > 27 (&(objectClass=posixAccount)(uid=user0))
> >> > 23 (&(objectClass=posixAccount)(uid=nobody))
> >> > 21 (&(objectClass=posixAccount)(uid=user1))
> >> > 18 (&(objectClass=posixAccount)(uid=user2))
> >> > 16 (&(objectClass=posixAccount)(uid=user3))
> >> > 15 (&(objectClass=posixAccount)(uid=user4))
> >> > 12 (&(objectClass=posixAccount)(uid=user5))
> >> > 11 (&(objectClass=posixAccount)(uidNumber=7330))
> >> > 10 (&(objectClass=posixAccount)(uid=user15))
> >> > 9 (&(objectClass=posixAccount)(uid=user16))
> >> > 8 (&(objectClass=posixAccount)(uidNumber=7333))
> >> > 6 (&(objectClass=posixAccount)(uid=user6))
> >> > 5 (&(objectClass=posixAccount)(uid=user7))
> >> > 5 (cn=defaults)
> >> > 4 (&(objectClass=posixAccount)(uidNumber=7228))
> >> > 4 (&(objectClass=shadowAccount)(uid=user1))
> >> > 4 (&(objectClass=posixAccount)(uid=user9))
> >> > 4 (&(objectClass=posixAccount)(uid=user10))
> >> > 4 (&(objectClass=posixAccount)(uid=user11))
> >> > 3 (&(objectClass=posixAccount)(uid=user12))
> >> > 3 (&(objectClass=posixAccount)(uid=user13))
> >> > 3 (&(objectClass=posixAccount)(uid=user14))
> >> > ...............
> >> > and MANY others that has 1 use in this stats.
> >> > I think this many queries from mail relay server.
> >> > * user1 and etc - just hidden real users.
> >> >
> >> > What can I do to tune nss? Can you point me in a right direction? Do
> not know what to look at.
> >> > If you need any additional information, logs and etc - I'll
provide
> it.
> >> >
> >> > Thanks in advance!
> >> >
> >
> >
>
> Have you got pam_ldap.conf configured?
> If so, what are the corresponding configurations related to ldap server
> connections?
>
--
_________________________________________
Non è forte chi non cade, ma chi cadendo ha la forza di rialzarsi.
Jim Morrison
4100
days inactive
4100
days old
openldap-technical@openldap.org
4 comments
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Marco Pizzoli