Hi Martin,
I think we need a bit more information here. You say the system rebooted
but don't say way (the sendmail messages alone are not indicative of a
reboot). Was this a panic?
My guess on the sendmail and groups issue is a name service problem.
Checking sendmail's source, the message prints h_errno returned from
gethostbyaddr which, from <netdb.h> is HOST_NOT_FOUND.
Again, guessing, I would speculate that wherever 192.168.56.1 is defined
is the same place as where the groups are defined, and they became
inaccessible for some reason.
Where are the missing groups defined?
What name service are you using?
If NIS/NIS+/LDAP, are all the configured servers/replicas still running?
Did somebody delete these entries from the name service?
Can any other hosts which use the same name service resolve these
entries? e.g. Does "getent hosts 192.168.56.1" return anything?
What are the nsswitch.conf entries for hosts: and group: (and possibly
netgroup: if you're using it).
Regards,
Brian
Dr. Martin Mundschenk wrote:
I just figured out, that the system rebooted at 01:19 h in the night
with no reason. The only entries in syslog at that time are:
Dec 10 01:20:45 iunis sendmail[553]: [ID 702911 mail.warning]
gethostbyaddr(192.168.56.1) failed: 1
Dec 10 01:20:45 iunis sendmail[572]: [ID 702911 mail.info] starting
daemon (8.14.3+Sun): smtp+queue...@00:15:00
Dec 10 01:20:45 iunis sendmail[571]: [ID 702911 mail.info] starting
daemon (8.14.3+Sun): queue...@00:15:00
I wonder, why it spoiled my groups?!
Martin
Am 10.12.2009 um 10:28 schrieb Dr. Martin Mundschenk:
Hi!
This morning all members of a group vanished. The result was, that
scripts could not be executed due to missing permissions.
What circumstances can lead to such a behavior?
Martin
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Brian Ruthven
Solaris Revenue Product Engineering
Sun Microsystems UK
Sparc House, Guillemont Park, Camberley, GU17 9QG
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