Failed to open log file for writing,

[kolet]

root@scw-8bceb9:~/down/dnschef# ./dnschef.py -i 10.1.20.92 --fakeip xx.xx.xx.xx --logfile=1 _ _ __ | | version 0.3 | | / _| __| |_ __ ___ ___| |__ ___| |_ / _ | '_ / |/ | ' \ / _ \ |
| (| | | | _ \ (| | | | / |
_,|| ||/_|| ||__|_|
[email protected]

[] DNSChef started on interface: 10.1.20.92
[] Using the following nameservers: 8.8.8.8
[*] Cooking all A replies to point to xx.xx.xx.xx
[!] Failed to open log file for writing.
`

first time using this python script everything work great. BUT when restarting my server i receive this error

the log file show this [08/Feb/2017:14:01:48 +0000] DNSChef is active.

i tried to remove the dnschef folder and download it from the beging i am receiving the same error.

[7c]

same here, but in my case i throws this exception by first start. version 0.3

[0x4d4c]

To sort this out: did you check whether there was a different process running on the IP/port combination you tried to start DNSChef on? IIRC the "failed to open log file" error pops up in this case as well.

[kolet]

actualy i did, i closed all proccess ,checked that no one of the port were taken.
the only thing to make it work is to reset the whole server..

[emirotin]

This is a gimmick, bad error reporting. What's actually happening is IOError code 13 (permission denied) is thrown on an attempt to bind to the default port 53 which requires the root permissions

[dpicollege]

i have same error even i start with root? any solution for that?

[pkosmala]

Same problem here. Nothing's running on port 53, but I get "Failed to open log file for writing".

[GrrrDog]

In my case, it was systemd-resolved on port 53.
I stopped it and dnschef started working as usual.

https://askubuntu.com/questions/907246/how-to-disable-systemd-resolved-in-ubuntu