[opensuse-autoinstall] SLES 9 and SLES 10 autoyast NTP client configuration bug?
Hi, Both on SLES 9 and SLES 10 when you configure the NTP client via the autoyast profile, when the system is installed the config file /etc/ ntp.conf is lacking the line: driftfile /var/lib/ntp/drift/ntp.drift Which means that every time the machine is rebooted NTP has to establish the drift from scratch which means the time oscillates randomly for about 15 minutes after booting up. This in turn causes problems with time sensitive applications and in particular our web authentication servers have a problem as suddenly things start appearing to be in the future which is treated as an error... The autoyast snippet we use to do the ntp client config is (I have obfuscated the ip addresses of the NTP servers): <quote> <ntp-client> <peers config:type="list"> <peer> <initial config:type="boolean">false</initial> <key>server</key> <value>blah0.blah.blah</value> </peer> <peer> <initial config:type="boolean">false</initial> <key>server</key> <value>blah1.blah.blah</value> </peer> <peer> <initial config:type="boolean">false</initial> <key>server</key> <value>blah2.blah.blah</value> </peer> </peers> <start_at_boot config:type="boolean">true</start_at_boot> </ntp-client> </quote> This results in this ntp config file: <quote> server blah0.blah.blah server blah1.blah.blah server blah2.blah.blah # alternate log file # logconfig =syncstatus + sysevents # logconfig =all # statsdir /tmp/ # directory for statistics files # filegen peerstats file peerstats type day enable # filegen loopstats file loopstats type day enable # filegen clockstats file clockstats type day enable # # Authentication stuff # # keys /etc/ntp.keys # path for keys file # trustedkey 1 2 3 4 5 6 14 15 # define trusted keys # requestkey 15 # key (7) for accessing server variables # controlkey 15 # key (6) for accessing server variables </quote> Is this a bug or are we missing some magic line(s) in the autoyast profile to cause a drift file to be added so our web authentication servers stop being confused when they are rebooted? The autoyast documentation does not seem to suggest that there is a way to configure a drift file in the autoyast profile so I think this is a bug with autoyast... Thanks a lot in advance! Best regards, Anton -- Anton Altaparmakov <aia21 at cam.ac.uk> (replace at with @) Unix Support, Computing Service, University of Cambridge, CB2 3QH, UK Linux NTFS maintainer, http://www.linux-ntfs.org/ -- To unsubscribe, e-mail: opensuse-autoinstall+unsubscribe@opensuse.org For additional commands, e-mail: opensuse-autoinstall+help@opensuse.org
Anton Altaparmakov wrote:
Hi,
Both on SLES 9 and SLES 10 when you configure the NTP client via the autoyast profile, when the system is installed the config file /etc/ntp.conf is lacking the line:
driftfile /var/lib/ntp/drift/ntp.drift
Which means that every time the machine is rebooted NTP has to establish the drift from scratch which means the time oscillates randomly for about 15 minutes after booting up. This in turn causes problems with time sensitive applications and in particular our web authentication servers have a problem as suddenly things start appearing to be in the future which is treated as an error...
The autoyast snippet we use to do the ntp client config is (I have obfuscated the ip addresses of the NTP servers):
<quote> <ntp-client> <peers config:type="list"> <peer> <initial config:type="boolean">false</initial> <key>server</key> <value>blah0.blah.blah</value> </peer> <peer> <initial config:type="boolean">false</initial> <key>server</key> <value>blah1.blah.blah</value> </peer> <peer> <initial config:type="boolean">false</initial> <key>server</key> <value>blah2.blah.blah</value> </peer> </peers> <start_at_boot config:type="boolean">true</start_at_boot> </ntp-client> </quote>
This results in this ntp config file:
<quote> server blah0.blah.blah server blah1.blah.blah server blah2.blah.blah # alternate log file # logconfig =syncstatus + sysevents # logconfig =all
# statsdir /tmp/ # directory for statistics files # filegen peerstats file peerstats type day enable # filegen loopstats file loopstats type day enable # filegen clockstats file clockstats type day enable
# # Authentication stuff # # keys /etc/ntp.keys # path for keys file # trustedkey 1 2 3 4 5 6 14 15 # define trusted keys # requestkey 15 # key (7) for accessing server variables # controlkey 15 # key (6) for accessing server variables </quote>
Is this a bug or are we missing some magic line(s) in the autoyast profile to cause a drift file to be added so our web authentication servers stop being confused when they are rebooted? The autoyast documentation does not seem to suggest that there is a way to configure a drift file in the autoyast profile so I think this is a bug with autoyast...
No idea if it's a bug or not, but we have the following added to our autoyast.xml (on SuSE Linux 10.2, i.e. !SLES): [snip] <peer> <address>/var/lib/ntp/drift/ntp.drift</address> <comment></comment> <initial_sync config:type="boolean">false</initial_sync> <options></options> <type>driftfile</type> </peer> [snip] Cheers /Lars -- To unsubscribe, e-mail: opensuse-autoinstall+unsubscribe@opensuse.org For additional commands, e-mail: opensuse-autoinstall+help@opensuse.org
Hi Lars, On 29 Mar 2007, at 11:27, Lars Stavholm wrote:
No idea if it's a bug or not, but we have the following added to our autoyast.xml (on SuSE Linux 10.2, i.e. !SLES):
[snip] <peer> <address>/var/lib/ntp/drift/ntp.drift</address> <comment></comment> <initial_sync config:type="boolean">false</initial_sync> <options></options> <type>driftfile</type> </peer> [snip]
Cool! That is one ugly looking hack but if it works who cares. (-: Thanks for that! I will try it on SLES 9/10... Best regards, Anton -- Anton Altaparmakov <aia21 at cam.ac.uk> (replace at with @) Unix Support, Computing Service, University of Cambridge, CB2 3QH, UK Linux NTFS maintainer, http://www.linux-ntfs.org/ -- To unsubscribe, e-mail: opensuse-autoinstall+unsubscribe@opensuse.org For additional commands, e-mail: opensuse-autoinstall+help@opensuse.org
Anton Altaparmakov wrote:
Hi Lars,
On 29 Mar 2007, at 11:27, Lars Stavholm wrote:
No idea if it's a bug or not, but we have the following added to our autoyast.xml (on SuSE Linux 10.2, i.e. !SLES):
[snip] <peer> <address>/var/lib/ntp/drift/ntp.drift</address> <comment></comment> <initial_sync config:type="boolean">false</initial_sync> <options></options> <type>driftfile</type> </peer> [snip]
Cool! That is one ugly looking hack but if it works who cares. (-:
Thanks for that! I will try it on SLES 9/10...
Sure. Believe it or not, but that code is actually generated by YaST -> Autoinstall after a manual installation using suggested default values. So, "it wasn't me":) /L -- To unsubscribe, e-mail: opensuse-autoinstall+unsubscribe@opensuse.org For additional commands, e-mail: opensuse-autoinstall+help@opensuse.org
On Thursday 29 March 2007 12:27, Lars Stavholm wrote:
[snip] <peer> <address>/var/lib/ntp/drift/ntp.drift</address> <comment></comment> <initial_sync config:type="boolean">false</initial_sync> <options></options> <type>driftfile</type> </peer> [snip]
hehe :) cool. -- ciao, Uwe Gansert Uwe Gansert, Server Technologies Team SUSE LINUX Products GmbH, GF: Markus Rex, HRB 16746 (AG Nürnberg) Business: http://www.suse.de/~ug -- To unsubscribe, e-mail: opensuse-autoinstall+unsubscribe@opensuse.org For additional commands, e-mail: opensuse-autoinstall+help@opensuse.org
participants (3)
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Anton Altaparmakov -
Lars Stavholm -
Uwe Gansert