Am 16.03.2013 23:37, schrieb Garry T. Williams:
I occasionally hit this when transitioning to a VPN connection or
shutting one down:
Mar 16 17:19:29 vfr NetworkManager[559]: <info> VPN connection
'cbeyond' (IP Config Get) complete.
Mar 16 17:19:29 vfr NetworkManager[559]: <info> Policy set 'Built-in
Ethernet' (em1) as default for IPv4 routing and DNS.
Mar 16 17:19:29 vfr NetworkManager[559]: <info> DNS: starting dnsmasq...
Mar 16 17:19:29 vfr dnsmasq[740]: exiting on receipt of SIGTERM
Mar 16 17:19:29 vfr dnsmasq[31273]: failed to create listening socket for 127.0.0.1:
Address already in use
Mar 16 17:19:29 vfr dnsmasq[31273]: FAILED to start up
Mar 16 17:19:30 vfr NetworkManager[559]: <info> VPN plugin state changed:
started (4)
Mar 16 17:19:30 vfr dbus[610]: [system] Activating service
name='org.freedesktop.nm_dispatcher' (using servicehelper)
Mar 16 17:19:30 vfr NetworkManager[559]: <warn> dnsmasq exited with error:
Network access problem (address in use; permissions; etc) (2)
It seems that NM kills the running dnsmasq and then restarts it. The
new instance sometimes fails to bind because the old instance hasn't
finished closing the port.
My work-around is to:
sudo systemctl start dnsmasq.service
when I notice the failure.
How can I eliminate this race?
systemd supports auto-restart of services and nobody knows why
it is not used as default while i have it for ANY service
since Fedora 15 in production use
yes, it's a workaround but it should work without user interaction
and since i avoid NetworkManager and use the classical "network.service"
with a static config nor have installed NM on anymachine.............
* FIRST: systemctl disable dnsmasq.service
* create /etc/systemd/system/dnsmasq.service
* systemctl daemon-reload
* systemctl enable dnsmasq.service
* systemctl restart dnsmasq.service
[root@proxy:~]$ cat /etc/systemd/system/dnsmasq.service
[Unit]
Description=DNS caching server
After=network.target network.service
[Service]
Type=forking
EnvironmentFile=-/etc/sysconfig/network
ExecStart=/usr/sbin/dnsmasq
Restart=always
RestartSec=1
[Install]
WantedBy=multi-user.target