[Bug 548885] Re: ntp host name not found error
** Changed in: ntp (Ubuntu) Status: Triaged = Fix Released -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to ntp in Ubuntu. https://bugs.launchpad.net/bugs/548885 Title: ntp host name not found error To manage notifications about this bug go to: https://bugs.launchpad.net/ntp/+bug/548885/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 548885] Re: ntp host name not found error
Launchpad has imported 12 comments from the remote bug at https://psp2.ntp.org/bugs/show_bug.cgi?id=975. If you reply to an imported comment from within Launchpad, your comment will be sent to the remote bug automatically. Read more about Launchpad's inter-bugtracker facilities at https://help.launchpad.net/InterBugTracking. On 2007-12-10T01:22:40+00:00 H-murray wrote: If DNS isn't working when ntpd starts, the lookup is deferred. For the server command, that works correctly. For the pool command, it only gets 1 IP address. Reply at: https://bugs.launchpad.net/ntp/+bug/548885/comments/0 On 2007-12-10T03:52:35+00:00 Stenn wrote: Bug 761 is kinda related to this. If one is fixed, the other could be fairly easily fixed at the same time. Reply at: https://bugs.launchpad.net/ntp/+bug/548885/comments/1 On 2007-12-10T04:00:37+00:00 Mayer-r wrote: Well no. That bug doesn't deal with multiple addresses at all. The problem here is that the pool option expects multiple addresses to be returned by DNS and used to set up associations. That bug won't solve this one. Danny Reply at: https://bugs.launchpad.net/ntp/+bug/548885/comments/2 On 2007-12-10T04:12:38+00:00 Stenn wrote: Subject: Deferred DNS lookup on pool command only gets 1 server Danny, Well, yes. If the response needs to be tailored, it should be pretty trivial to knock these things out together. I'm talking about the work that needs to be done in the forked resolver process to get the information sent back to the main process. -- Harlan Stenn st...@ntp.org Reply at: https://bugs.launchpad.net/ntp/+bug/548885/comments/3 On 2009-11-18T00:37:50+00:00 H-murray wrote: Fix is in pogo:/usa/murray/bug-975 This also fixes bug-761. I've tested on Linus, NetBSD and FreeBSD. Reply at: https://bugs.launchpad.net/ntp/+bug/548885/comments/4 On 2009-11-18T02:48:06+00:00 Dave Hart wrote: I've spent a bit of time reviewing Hal's bug-975 repo. First, above all else, Hal is cleaning house in ntp_intres.c while I'm stacking kindling under the corners to burn it to the ground once 4.2.6 is out. Second, after 6 weeks in a RC cycle, is it really important to fix the bugs this fixes and provide the improvements this provides for 4.2.6? A bunch of new code which we get to debug in -stable is unappealing to me. Assuming you get past those concerns and proceed, other items I note: A) ntpd.h reverts a recent change adding const to extern char *chrootdir; B) ntp_intres.c has hints.ai_protocol = 17; and a comment about the header that value was sniped from. That should simply come out, setting ai_protocol portably is nontrivial and we don't need it, do we? C) getaddrinfo() returning EAI_SYSTEM was retried before, now it's considered permanent. If I were writing from scratch I'd do the same, but given it has behaved that way for years, was there a good reason to change? D) There are a dozen or so places where the body of an if statement continues on the same line as the conditional, NTP style is to put the body on the following line indented. E) In doconfigure() there's an apparently overlooked block of test code in column 1 under if (0) that should come out or be cleaned up to a #ifdef SOME_TEST_MACRO. F) A few lines later in doconfigure(), there's a questionable use of in6addr_any when returning a v4 result, which depends on whether the system was built with IPv6 support. Why not use NULL as is done for the v4 address when returning a v6 result? Hal, I'm troubled posting these comments. On the one hand, I'm thrilled you've taken an interest in getting ntpd DNS resolution right, and you've put a lot of effort into developing and testing your changes. On the other hand, well, what I said up top. The timing is just horrible. I really do want to replace ntp_intres wholesale with a callback-based getaddrinfo() clone that will call back a given function when the results are available, and that will mean most of your intres work will be tossed. Reply at: https://bugs.launchpad.net/ntp/+bug/548885/comments/5 On 2009-11-18T11:54:20+00:00 H-murray wrote: Subject: Deferred DNS lookup on pool command only gets 1 server I've spent a bit of time reviewing Hal's bug-975 repo. Thanks. First, above all else, Hal is cleaning house in ntp_intres.c while I'm stacking kindling under the corners to burn it to the ground once 4.2.6 is out. I'm OK if we dump my stuff. If nothing else, I think some of the quirks I've sorted
[Bug 548885] Re: ntp host name not found error
After enabling NTP this morning, I noticed very similar messages to the above in my syslog. Mar 13 09:16:23 assam kernel: [ 927.068998] type=1503 audit(1300032983.633:25): operation=open pid=2184 parent=1 profile=/usr/sbin/ntpd requested_mask=r:: denied_mask=r:: fsuid=0 ouid=0 name=/etc/resolv.conf.rawbw Mar 13 09:16:23 assam kernel: [ 927.069297] type=1503 audit(1300032983.633:26): operation=open pid=2184 parent=1 profile=/usr/sbin/ntpd requested_mask=r:: denied_mask=r:: fsuid=0 ouid=0 name=/etc/resolv.conf.rawbw Mar 13 09:16:25 assam ntpd_initres[2186]: host name not found: ntp.rawbw.com Mar 13 09:16:25 assam ntpd_initres[2186]: host name not found: ntp.ubuntu.com I had /etc/resolv.conf as a symlink pointing to resolv.conf.rawbw After deleting the symlink and copying /etc/resolv.conf.rawbw to /etc/resolv.conf, I restarted ntpd (using /etc/init.d/ntp stop and /etc/init.d/ntp start). This time I didn't get the error messages. The permissions on /etc/resolv.conf.rawbw are -rw-r--r-- 1 rootroot 80 Mar 13 09:01 resolv.conf.rawbw so it's not a problem with the file permissions. dig(1) and everything else worked just fine when /etc/resolv.conf was a symlink. Why is it a problem for ntpd? -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to ntp in ubuntu. https://bugs.launchpad.net/bugs/548885 Title: ntp host name not found error -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 548885] Re: ntp host name not found error
My problem is fixed. When I installed 10.10, I saw a similar problem, but noticed in syslog the message: Oct 18 19:49:07 ecube kernel: [209271.514454] type=1400 audit(1287445747.259:19): apparmor=DENIED operation=open parent=1 profile=/usr/sbin/ntpd name=/etc/resolv.conf-google pid=3036 comm=ntpd requested_mask=r denied_mask=r fsuid=0 ouid=0 I had as my /etc/resolve.conf a soft link to /etc/resolv.conf-google. Evidenlty apparmor does not allow /usr/sbin/ntpd to run with resolver reference to /etc/resolv.conf-google. When I had made /etc/ntpd a soft link elsewhere there was no problem. I now have a /etc/resolv.conf file and not a soft link, so things work fine. -- Barry Fishman -- ntp host name not found error https://bugs.launchpad.net/bugs/548885 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to ntp in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
Re: [Bug 548885] Re: ntp host name not found error
C de-Avillez hgg...@gmail.com writes: OK. I found the upstream bug on this. Please note that -- per upstream -- this is still open. The issue stems from a *non-working* DNS at the time NTP is triggered (most probably on boot). The boot time issue is not what is happening for me. Retarting the ntpd daemon using the /etc/init.d/ntp script when DNS is known to be working still fails. Running it from the command line as previously mentioned still fails. Since I can get the upstream ntp-4.2.6 release to fail, I am going to try to debug that rather than the 4.2@1.1620-0 lucid version, unless you some need otherwise. My guess would be it involves a memory leak, although I would assume the code in deamon programs like ntpd are very closely examined. I can't otherwise explain why a program that works from /home/util64/ntp-4.2.6/bin would fail when moved to /usr/sbin. Nobody else seems to have the problem with Lucid, and there is a simple fix to get it working, if someone else reports the problem. -- Barry Fishman -- ntp host name not found error https://bugs.launchpad.net/bugs/548885 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to ntp in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
Re: [Bug 548885] Re: ntp host name not found error
C de-Avillez hgg...@gmail.com writes: Thank you for opening this bug and helping make Ubuntu better. If I understand you correctly, this is not a NTP problem -- you seem to be having an issue with name resolution (DNS), not NTP. Please check your DNS setup. ** Changed in: ntp (Ubuntu) Importance: Undecided = Low ** Changed in: ntp (Ubuntu) Status: New = Incomplete DNS seems to work with everything else I've tried. Firefox, chromium-browser, dig, gethostip, emacs/gnus, even ntpdate. If I could find another program that failed I would use that for testing. With ntpd stopped: $ ntpdate ntp.ubuntu.com 27 Mar 14:16:46 ntpdate[22200]: adjust time server 91.189.94.4 offset 0.000613 sec $ ntpdate 0.pool.ntp.org 27 Mar 14:16:59 ntpdate[22201]: adjust time server 69.94.105.81 offset -0.000226 sec $ ntpdate 1.pool.ntp.org 27 Mar 14:17:06 ntpdate[22206]: adjust time server 4.79.132.217 offset -0.001346 sec $ ntpdate 2.pool.ntp.org 27 Mar 14:17:12 ntpdate[22207]: adjust time server 208.53.158.34 offset 0.009339 sec $ ntpdate pool.ntp.org 27 Mar 14:17:20 ntpdate[22208]: adjust time server 72.167.54.201 offset 0.006475 sec With ntpd started: $ ntpq ntpq peers No association ID's returned ntpq host ntp.ubuntu.com current host set to ntp.ubuntu.com ntpq peers ntp.ubuntu.com: timed out, nothing received ***Request timed out ntpq host 0.pool.ntp.org current host set to 0.pool.ntp.org ntpq peers remote refid st t when poll reach delay offset jitter == *clock.fmt.he.ne .PPS.1 u 226 1024 3770.2820.138 0.125 +clock.sjc.he.ne .CDMA. 1 u 572 1024 3771.7930.117 0.878 +clepsydra.dec.c .GPS.1 u 246 1024 3770.9980.106 0.331 -nist1.symmetric .ACTS. 1 u 207 1024 3775.7712.650 0.198 -time-A.timefreq .ACTS. 1 u 557 1024 377 43.445 -2.132 0.232 -clock.xmission. .GPS.1 u 227 1024 377 18.184 -0.026 0.003 ntpq host 1.pool.ntp.org current host set to 1.pool.ntp.org ntpq peers remote refid st t when poll reach delay offset jitter == ntp1.csl.tjhsst 192.5.41.40 2 u 318 1024 3770.170 -0.586 1.770 *ntp0.usno.navy. .USNO. 1 u 363 1024 377 20.175 -2.152 0.252 +ntp.alaska.edu .GPS.1 u 283 1024 377 123.1932.198 0.957 +clock.isc.org .GPS.1 u 368 1024 377 72.9170.836 0.592 18.18.1.95 .STEP. 16 u- 102400.0000.000 0.000 LOCAL(1).LOCL. 10 l 64 64 3770.0000.000 0.001 ntpq host 2.pool.ntp.org current host set to 2.pool.ntp.org ntpq peers 2.pool.ntp.org: timed out, nothing received ***Request timed out ntpq host pool.ntp.org current host set to pool.ntp.org ntpq peers remote refid st t when poll reach delay offset jitter == *clock.fmt.he.ne .PPS.1 u 343 1024 3770.2820.138 0.125 +clock.sjc.he.ne .CDMA. 1 u 689 1024 3771.7930.117 0.878 +clepsydra.dec.c .GPS.1 u 363 1024 3770.9980.106 0.331 -nist1.symmetric .ACTS. 1 u 324 1024 3775.7712.650 0.198 -time-A.timefreq .ACTS. 1 u 674 1024 377 43.445 -2.132 0.232 -clock.xmission. .GPS.1 u 343 1024 377 18.184 -0.026 0.003 ntpq quit I tries a strace but did not see anyting I could understand. I tried building the upstream ntp-4.2.6 and installed it under /home/util64/ntp-4.2.6/. When I ran it from the command line (as root) or as a soft link from /usr/sbin/ it seemed to work (the strace showed periodic connection to the right servers). However if I moved lucid's ntpd out of the way replacing /usr/sbin/ntpd with the new version, and restarted the ntp service, I got the a similar problem; the syslog indicting first a Deferring DNS for each host and then the usual host name not found messages. The working command was: $ cd /home/util64/ntp-4.2.6/bin $ strace ./ntpd -n -c /etc/ntp.conf -g -u 123:130 21 | tee /tmp/new.trace -- Barry Fishman ** Attachment added: NTP.trace http://launchpadlibrarian.net/42195540/NTP.trace -- ntp host name not found error https://bugs.launchpad.net/bugs/548885 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to ntp in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 548885] Re: ntp host name not found error
OK. I found the upstream bug on this. Please note that -- per upstream -- this is still open. The issue stems from a *non-working* DNS at the time NTP is triggered (most probably on boot). This is why, when you are up running, you do not see this error. Please see the upstream bug for details. So. Right now you have the following options: * move to IP addresses instead of FQSN * have a working DNS at the time NTP is triggered ** Bug watch added: psp2.ntp.org/bugs/ #975 https://psp2.ntp.org/bugs/show_bug.cgi?id=975 ** Also affects: ntp via https://psp2.ntp.org/bugs/show_bug.cgi?id=975 Importance: Unknown Status: Unknown ** Changed in: ntp (Ubuntu) Status: Incomplete = Triaged -- ntp host name not found error https://bugs.launchpad.net/bugs/548885 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to ntp in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 548885] Re: ntp host name not found error
** Attachment added: .etc.apparmor.d.usr.sbin.ntpd.txt http://launchpadlibrarian.net/42061280/.etc.apparmor.d.usr.sbin.ntpd.txt ** Attachment added: Dependencies.txt http://launchpadlibrarian.net/42061281/Dependencies.txt ** Attachment added: KernLog.txt http://launchpadlibrarian.net/42061282/KernLog.txt ** Attachment added: ProcMaps.txt http://launchpadlibrarian.net/42061283/ProcMaps.txt ** Attachment added: ProcStatus.txt http://launchpadlibrarian.net/42061284/ProcStatus.txt ** Attachment added: modified.conffile..etc.ntp.conf.txt http://launchpadlibrarian.net/42061285/modified.conffile..etc.ntp.conf.txt -- ntp host name not found error https://bugs.launchpad.net/bugs/548885 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to ntp in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 548885] Re: ntp host name not found error
Thank you for opening this bug and helping make Ubuntu better. If I understand you correctly, this is not a NTP problem -- you seem to be having an issue with name resolution (DNS), not NTP. Please check your DNS setup. ** Changed in: ntp (Ubuntu) Importance: Undecided = Low ** Changed in: ntp (Ubuntu) Status: New = Incomplete -- ntp host name not found error https://bugs.launchpad.net/bugs/548885 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to ntp in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
