Mailinglist Archive: opensuse-bugs (14433 mails)

[bugzilla_noreply@xxxxxxxxxx]

https://bugzilla.novell.com/show_bug.cgi?id=435261


           Summary: "getent hosts something.local" has long delay
           Product: openSUSE 11.0
           Version: Final
          Platform: Other
        OS/Version: openSUSE 11.0
            Status: NEW
          Severity: Major
          Priority: P5 - None
         Component: Network
        AssignedTo: bnc-team-screening@xxxxxxxxxxxxxxxxxxxxxx
        ReportedBy: syseng@xxxxxxxxxx
         QAContact: qa@xxxxxxx
          Found By: ---


Is the toplevel .local somewhere hardcoded in the name service switch, getent
or cache daemon? There is a strange behaviour when using "getent hosts" with a
local domain in /etc/hosts. It seems to ignore the query order defined in
/etc/nsswitch.conf and searches DNS. It produces a long delay until the answer
appears

Compare the query times for toplevel domain .local and .lokus:


# time getent hosts something.local
123.123.123.123 something.local

real    0m15.015s
user    0m0.000s
sys     0m0.004s

# time getent hosts something.lokus
231.231.231.231 something.lokus

real    0m0.004s
user    0m0.000s
sys     0m0.004s

# time getent hosts
127.0.0.1       localhost.localdomain localhost
123.123.11.88   myhost.example.com myhost
123.123.123.123 something.local
231.231.231.231 something.lokus

real    0m0.003s
user    0m0.004s
sys     0m0.000s

An strace of getent shows that it first contacts nscd socket, waits for 5
seconds and then opens nsswitch.conf. This 3 times. It happens on Suse 10.1 and
Suse 11.0. When removing "dns" from /etc/nsswitch.conf, then the answer comes
immediately. I checked it also on Solaris and there both domains are handled
identically, so it's rather a bug than a feature. I'll attach straces of the
getent queries.



Configuration:

# cat /etc/hosts
127.0.0.1        localhost.localdomain localhost
123.123.11.88    myhost.example.com myhost
123.123.123.123  something.local
231.231.231.231  something.lokus

# cat /etc/nsswitch.conf
passwd:     files ldap
group:      files ldap
hosts:      files dns
networks:   files
services:   files
protocols:  files
rpc:        files
ethers:     files
netmasks:   files
netgroup:   files ldap
publickey:  files
bootparams: files
automount:  files ldap
aliases:    files

# cat /etc/resolv.conf:
nameserver 123.123.11.99
nameserver 123.123.22.88
nameserver 123.123.33.77
domain example.com
search example.com my.example.com
options ndots:1


Best regards,
Bernd Nies


-- 
Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.