[Bug 1314697] Re: Upon upgrade, DNS resolution no longer works
LSOF output below. I tried to put a strace in init.d but failed miserably lsof | grep dnsmasq dnsmasq 1430 dnsmasq cwd unknown /proc/1430/cwd (readlink: Permission denied) dnsmasq 1430 dnsmasq rtd unknown /proc/1430/root (readlink: Permission denied) dnsmasq 1430 dnsmasq txt unknown /proc/1430/exe (readlink: Permission denied) dnsmasq 1430 dnsmasq NOFD /proc/1430/fd (opendir: Permission denied) dnsmasq 2066 nobody cwd unknown /proc/2066/cwd (readlink: Permission denied) dnsmasq 2066 nobody rtd unknown /proc/2066/root (readlink: Permission denied) dnsmasq 2066 nobody txt unknown /proc/2066/exe (readlink: Permission denied) dnsmasq 2066 nobody NOFD /proc/2066/fd (opendir: Permission denied) dnsmasq 3176 libvirt-dnsmasq cwd unknown /proc/3176/cwd (readlink: Permission denied) dnsmasq 3176 libvirt-dnsmasq rtd unknown /proc/3176/root (readlink: Permission denied) dnsmasq 3176 libvirt-dnsmasq txt unknown /proc/3176/exe (readlink: Permission denied) dnsmasq 3176 libvirt-dnsmasq NOFD /proc/3176/fd (opendir: Permission denied) -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to dnsmasq in Ubuntu. https://bugs.launchpad.net/bugs/1314697 Title: Upon upgrade, DNS resolution no longer works To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dnsmasq/+bug/1314697/+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 1314697] [NEW] Upon upgrade, DNS resolution no longer works
Public bug reported: Upgraded from Trusty latest to Utopic latest, and rebooted. DNS resolution no longer worked. I.e. ping google.com failed, ping 8.8.8.8 suceeded. dnsmasq is running, and port 53 is open. Turned on log queries and log dhcp then attempted to ping google. Extract from syslog is attached. I have now worked around this by adding nameserver 8.8.8.8 to /etc/resolv.conf. I am aware this is not a sustainable workaround as this file is automatically generated. ProblemType: Bug DistroRelease: Ubuntu 14.10 Package: dnsmasq 2.70-1 [modified: etc/dnsmasq.conf] ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9 Uname: Linux 3.13.0-24-generic x86_64 ApportVersion: 2.14.1-0ubuntu3 Architecture: amd64 Date: Wed Apr 30 16:52:25 2014 InstallationDate: Installed on 2011-12-04 (878 days ago) InstallationMedia: Ubuntu 11.10 Oneiric Ocelot - Release amd64 (20111011) PackageArchitecture: all ProcEnviron: LANGUAGE=en_GB:en TERM=xterm PATH=(custom, no user) LANG=en_GB.UTF-8 SHELL=/bin/zsh SourcePackage: dnsmasq SystemImageInfo: Error: [Errno 2] No such file or directory: 'system-image-cli' UpgradeStatus: Upgraded to utopic on 2014-01-31 (88 days ago) mtime.conffile..etc.dnsmasq.conf: 2014-04-30T16:46:18.803393 ** Affects: dnsmasq (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug utopic -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to dnsmasq in Ubuntu. https://bugs.launchpad.net/bugs/1314697 Title: Upon upgrade, DNS resolution no longer works To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dnsmasq/+bug/1314697/+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 1314697] Re: Upon upgrade, DNS resolution no longer works
** Attachment added: dnsmasqlog https://bugs.launchpad.net/ubuntu/+source/dnsmasq/+bug/1314697/+attachment/4101512/+files/dnsmasqlog -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to dnsmasq in Ubuntu. https://bugs.launchpad.net/bugs/1314697 Title: Upon upgrade, DNS resolution no longer works To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dnsmasq/+bug/1314697/+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 1314697] Re: Upon upgrade, DNS resolution no longer works
Also note that dnsmasq is running under user=nobody and running at 99-100% CPU. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to dnsmasq in Ubuntu. https://bugs.launchpad.net/bugs/1314697 Title: Upon upgrade, DNS resolution no longer works To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dnsmasq/+bug/1314697/+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 1314697] Re: Upon upgrade, DNS resolution no longer works
Thanks for the workaround Thomas. I've checked a few more things, firstly I found this in syslog at startup, missing from my earlier attachment: Apr 30 18:57:06 donkey NetworkManager[1162]: info DNS: starting dnsmasq... Apr 30 18:57:06 donkey NetworkManager[1162]: warn dnsmasq not available on the bus, can't update servers. Apr 30 18:57:06 donkey NetworkManager[1162]: error [1398880626.164382] [nm-dns-dnsmasq.c:396] update(): dnsmasq owner not found on bus: Could not get owner of name 'org.freedesktop.NetworkManager.dnsmasq': no such name Apr 30 18:57:06 donkey NetworkManager[1162]: warn DNS: plugin dnsmasq update failed I've also noticed a that there is no -u arg passed to the service on startup, and that the --conf-file arg points to /var/lib/libvirt/dnsmasq/default.conf - which is an empty file. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to dnsmasq in Ubuntu. https://bugs.launchpad.net/bugs/1314697 Title: Upon upgrade, DNS resolution no longer works To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dnsmasq/+bug/1314697/+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
