[Bug 1186662] Re: isc-dhcp-server fails to renew lease file
1186662 at bugs.launchpad.net
Mon May 30 11:16:15 UTC 2016
I'm fighting since 14.04 LTS with this lease file issue. The fixes
provided in the release of isc-dhcp-server 4.3.3-5ubuntu12 does not fix
the behaviour in 16.04 LTS (xenial) for me. The reason is the
configuration of apparmaor for the binary /usr/sbin/dhcpd, which prevent
the manipulation of the leases file. I tried to fix the capabilities,
but can't find a solution. The settings "capability dac_override" has no
Temporary I disabled apparmor interception for isc-dhcpd-server by symlinking to disable folder.
# ln -s /etc/apparmor.d/usr.sbin.dhcpd /etc/apparmor.d/disable/
and restartet the dhcpd. This solves the problem, but it let the dhcpd be unprotected by apparmor.
To fix it finaly, please provide a working
/etc/apparmor.d/usr.sbin.dhcpd with the required policy file.
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isc-dhcp-server fails to renew lease file
Status in isc-dhcp package in Ubuntu:
Status in isc-dhcp source package in Trusty:
After raring upgrade, the dhcp server fails to renew lease file when
it tries to (about every hour).
The syslog says:
dhcpd: Can't create new lease file: Permission denied
It looks like a permission problem, because
# chown -R dhcpd:dhcpd /var/lib/dhcp
the above command temporarily solves the issue, until dhcpd is
restarted: at that time, the ownership of the directory and the lease
file is set back to root:root.
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