After a few investigation I found that my previous fix does not fix the bug at boot, at least on my Ubuntu 18.04 server.
There's no need to manually create the /run/dhcp-server folder since dhcpd automatically creates the needed PID file parent folders by itself. It only happens at boot so the bug shoud be somewhere else, maybe something in startup sequence/dependencies. With the original .service file, PID file /run/dhcp-server/dhcp.pid is not created (but server is running); manually restarting the service after boot will create the PID file correctly. I've workarounded the bug by hardcoding PID file names WITHOUT folder: /lib/systemd/system/isc-dhcp-server.service ==> "-pf /run/dhcp.pid" /lib/systemd/system/isc-dhcp-server6.service ==> "-pf /run/dhcp6.pid" and it works correctly after boot. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to isc-dhcp in Ubuntu. https://bugs.launchpad.net/bugs/1448657 Title: isc-dhcp-server: Can't create PID file /run/dhcp-server/dhcpd.pid: Permission denied Status in isc-dhcp package in Ubuntu: Confirmed Bug description: Just upgraded from 14-10 to 15-04, and now see the following in syslog: Apr 26 10:50:08 server kernel: [70470.960718] audit: type=1400 audit(1430045408.725:8): apparmor="DENIED" operation="capable" profile="/usr/sbin/dhcpd" pid=8619 comm="dhcpd" capability=1 capname="dac_ove rride" Apr 26 10:50:08 server sh[8619]: Can't create PID file /run/dhcp-server/dhcpd.pid: Permission denied. Description: Ubuntu 15.04 Release: 15.04 isc-dhcp-server: Installed: 4.3.1-5ubuntu2 ----------- 8x ----------------- # cat /etc/default/isc-dhcp-server # Defaults for isc-dhcp-server initscript # sourced by /etc/init.d/isc-dhcp-server # installed at /etc/default/isc-dhcp-server by the maintainer scripts # # This is a POSIX shell fragment # # Path to dhcpd's config file (default: /etc/dhcp/dhcpd.conf). #DHCPD_CONF=/etc/dhcp/dhcpd.conf # Path to dhcpd's PID file (default: /var/run/dhcpd.pid). #DHCPD_PID=/var/run/dhcpd.pid # Additional options to start dhcpd with. # Don't use options -cf or -pf here; use DHCPD_CONF/ DHCPD_PID instead #OPTIONS="" # On what interfaces should the DHCP server (dhcpd) serve DHCP requests? # Separate multiple interfaces with spaces, e.g. "eth0 eth1". INTERFACES="" ----------- 8x ----------------- # ls -la /var/run lrwxrwxrwx 1 root root 4 Oct 24 2013 /var/run -> /run # ls -la /run/dhcp-server/ total 0 drwxr-xr-x 2 dhcpd dhcpd 40 Apr 26 10:59 . drwxr-xr-x 34 root root 1060 Apr 26 11:33 .. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1448657/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
