[Bug 776945] Re: Apparmor results in denying operation mknod for isc-dhcp-server

[Wolfgang Fahl]

The comment above saying that dhcp should be started correctly put me on the track 
I had to change /etc/init.d/isc-dhcp-server script
changing DHCPDPID to /var/run/dhcp3-server/dhcpd.pid

from /var/run/dpcpd.pid

/var/run can not be written to from the daemon user

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Title:
  Apparmor results in denying operation mknod for isc-dhcp-server

Status in “isc-dhcp” package in Ubuntu:
  Invalid

Bug description:
  Binary package hint: isc-dhcp-server

  I have isc-dhcp-server installed , i have configured  the needed
  /etc/dhcpd.conf file but when i try to execute

  #dhcpd

  it results in 
  can`t create PID file /var/run/dhcpd.pid :Permission denied.

  My syslog suggests me apparmor is denying the operation.

  #tail -f /var/log/syslog
  May  3 23:31:26 natty kernel: [  354.126130] type=1400 audit(1304490686.397:10): apparmor="DENIED" operation="mknod" parent=1 profile="/usr/sbin/dhcpd" name="/var/run/dhcpd.pid" pid=1116 comm="dhcpd" requested_mask="c" denied_mask="c" fsuid=105 ouid=105

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