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[Mathieu Trudel-Lapierre <mathieu.tl@xxxxxxxxx>]

** Changed in: isc-dhcp (Ubuntu)
       Status: New => In Progress

** Changed in: isc-dhcp (Ubuntu)
     Assignee: (unassigned) => Mathieu Trudel-Lapierre (mathieu-tl)

** Changed in: isc-dhcp (Ubuntu)
   Importance: Undecided => Critical

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https://bugs.launchpad.net/bugs/1535952

Title:
  isc-dhcp-server.service fails on xenial with "Can't open lease
  database /var/lib/dhcp/dhcpd.leases: No such file or directory"

Status in isc-dhcp package in Ubuntu:
  In Progress

Bug description:
  While investigating a DHCP issue on MAAS, I installed a fresh xenial
  on a LXC container and installed the isc-dhcp-server package. It fails
  to start with a syslog entry like "dhcpd[8090]: Can't open lease
  database /var/lib/dhcp/dhcpd.leases: No such file or directory --.

  From the machine:

  root@xenial-dhcp-test:~# lsb_release -rd
  Description:	Ubuntu Xenial Xerus (development branch)
  Release:	16.04

  root@xenial-dhcp-test:~# dpkg -l isc* | cat
  Desired=Unknown/Install/Remove/Purge/Hold
  | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
  |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
  ||/ Name                 Version        Architecture Description
  +++-====================-==============-============-=====================================================
  ii  isc-dhcp-client      4.3.3-5ubuntu1 amd64        DHCP client for automatically obtaining an IP address
  un  isc-dhcp-client-ddns <none>         <none>       (no description available)
  ii  isc-dhcp-common      4.3.3-5ubuntu1 amd64        common files used by all of the isc-dhcp packages
  ii  isc-dhcp-server      4.3.3-5ubuntu1 amd64        ISC DHCP server for automatic IP address assignment
  un  isc-dhcp-server-ldap <none>         <none>       (no description available)

  root@xenial-dhcp-test:~# systemctl status isc-dhcp-server.service
  ● isc-dhcp-server.service - ISC DHCP IPv4 server
     Loaded: loaded (/lib/systemd/system/isc-dhcp-server.service; enabled; vendor preset: enabled)
     Active: failed (Result: exit-code) since Tue 2016-01-19 23:43:40 UTC; 6min ago
       Docs: man:dhcpd(8)
    Process: 8090 ExecStart=/bin/sh -ec      CONFIG_FILE=/etc/dhcp/dhcpd.conf;      if [ -f /etc/ltsp/dhcpd.conf ]; then CONFIG_FILE=/etc/ltsp/dhcpd.conf; fi;      exec dhcpd -user dhcpd -group dhcpd -f -4 -pf /run/dhcp-server/dhcpd.pid -cf $CONFIG_FILE $INTERFACES (code=exited, status=1/FAILURE)
    Process: 8081 ExecStartPre=/bin/chown dhcpd:dhcpd /run/dhcp-server (code=exited, status=0/SUCCESS)
   Main PID: 8090 (code=exited, status=1/FAILURE)

  Jan 19 23:43:40 xenial-dhcp-test sh[8090]: Can't open lease database /var/lib/dhcp/dhcpd.leases: No suc...y --
  Jan 19 23:43:40 xenial-dhcp-test sh[8090]: check for failed database rewrite attempt!
  Jan 19 23:43:40 xenial-dhcp-test sh[8090]: Please read the dhcpd.leases manual page if you
  Jan 19 23:43:40 xenial-dhcp-test sh[8090]: don't know what to do about this.
  Jan 19 23:43:40 xenial-dhcp-test sh[8090]: If you think you have received this message due to a bug rather
  Jan 19 23:43:40 xenial-dhcp-test sh[8090]: than a configuration issue please read the section on submitting
  Jan 19 23:43:40 xenial-dhcp-test sh[8090]: bugs on either our web page at www.isc.org or in the README file
  Jan 19 23:43:40 xenial-dhcp-test sh[8090]: before submitting a bug.  These pages explain the proper
  Jan 19 23:43:40 xenial-dhcp-test sh[8090]: process and the information we find helpful for debugging..
  Jan 19 23:43:40 xenial-dhcp-test sh[8090]: exiting.
  Hint: Some lines were ellipsized, use -l to show in full.

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