topic Re: syslogd issue - messages not ordered by date in Operating System - HP-UX

syslogd issue - messages not ordered by date

Andrei Lica_1 — Thu, 24 Feb 2005 09:35:18 GMT

I've noticed that syslog messages are not always logged in order ( by time/date field ) to /var/adm/syslog/syslog.log

For instance :
----
Feb 22 18:59:40 f01db01 sshd[4169]: pam_setcred: error Permission denied
Feb 22 12:03:29 f01db01 login: pam_authenticate: error No account present for user
Feb 22 12:03:31 f01db01 login: pam_authenticate error
Feb 22 12:03:31 f01db01 login: pam_acct_mgmt: error No account present for user
Feb 22 12:03:36 f01db01 login: warn_user_passwd_will_expire: -1 -1 12836 -1
Feb 22 19:06:18 f01db01 sshd[20331]: pam_setcred: error Permission denied
----

Is this a known syslog bug/feature ?

Re: syslogd issue - messages not ordered by date

RAC_1 — Thu, 24 Feb 2005 09:39:11 GMT

Was the time changed on server?? this should not happen.

Anil

Re: syslogd issue - messages not ordered by date

john korterman — Thu, 24 Feb 2005 09:44:29 GMT

Hi,
if the system time was not changed, could there have been more than one syslogd running on the machine?

regards,
John K.

Re: syslogd issue - messages not ordered by date

Andrei Lica_1 — Thu, 24 Feb 2005 09:52:11 GMT

no date changed

I think sometimes syslogd hangs for a period ( no messages logged ) then logs some old messages together with the new ones.
My version : HP-UX11.23 march 2004 patch

Re: syslogd issue - messages not ordered by date

Peter Godron — Thu, 24 Feb 2005 10:27:12 GMT

Andrei,
having syslog 'hang' for 7 hours (12:03 until 19:06) would be a serious problem.
How can you be sure the time/timezone was not changed?
If this happens on a daily basis it may be worthwhile croning a job to ftp onto your machine every 10 minutes.
Regards

Re: syslogd issue - messages not ordered by date

RAC_1 — Thu, 24 Feb 2005 10:34:32 GMT

OK, put a script using logger that logs messages through syslogd to syslog.log file. Log test messages periodically and check the time stamps. man logger for details.

Something like following in cron.

0,10,20,30,40,50 * * * D /usr/bin/logger "Test Message $(date)"

Also check if you have the latest patches for syslogd

Anil

Re: syslogd issue - messages not ordered by date

Andrei Lica_1 — Thu, 24 Feb 2005 10:47:55 GMT

> How can you be sure the time/timezone was not changed?

Hmm, this could be the cause only if 2 different processes are using diff. timezones ( ex: sshd and login ) and the logged time is given not by syslogd but by sshd|login.
I'm the admin of this server and I haven't changed the timezone ever.
I'm not sure syslogd hangs. Maybe syslogd receives messages from 2 different sources ( sockets ) and is having temporary problems reading from one source.
I'm using NTP for time sync.

Re: syslogd issue - messages not ordered by date

Andrei Lica_1 — Thu, 24 Feb 2005 11:05:59 GMT

I've found this patch PHCO_29036 but is not for 11.23 version. Could be related to my problem :
http://www8.itrc.hp.com/service/patch/patchDetail.do?BC=patch.breadcrumb.main|patch.breadcrumb.releaseIndexPage|patch.breadcrumb.releasePage{5013-2132}|patch.breadcrumb.bundleAggPage{GOLDBASE11i:B.11.11.0406.5}|&patchid=PHCO_29036&context=hpux:800:11:11
This is the only syslogd patch for 11.23 but my problem is not mentioned here :
http://www8.itrc.hp.com/service/patch/patchDetail.do?BC=patch.breadcrumb.main|patch.breadcrumb.releaseIndexPage|patch.breadcrumb.releasePage{0409-11.23}|patch.breadcrumb.bundleAggPage{BUNDLE11i:B.11.23.0409.3}|&patchid=PHCO_31604&context=hpux:800:11:23

I can also try RAC's idea with sending messages at fixed intervals.

Re: syslogd issue - messages not ordered by date

RAC_1 — Thu, 24 Feb 2005 16:36:59 GMT

Is there something in sshd config file to this effect?? Aother exercise.

For one user change TZ and try ssh. check timestamp for this users ssh in syslog. But I bet this is not a problem.

Anil