On 21/01/2021 20:48, Dan Campbell - dan--- via Pdns-users wrote:
I just installed the Authoritative server 4.4.0 on a CentOS 8 virtual
machine and I’m trying to get a simple pipebackend running.
The backend is a python script that runs from the command line, but
pdns_server fails to start and give the following error:
[PIPEBackend] Unable to launch, fatal argument error: Command
'/home/webapps/dns/bin/backend.py' cannot be executed: Permission>
Caught an exception instantiating a backend: Command
'/home/webapps/dns/bin/backend.py' cannot be executed: Permission denied
Cleaning up
Distributor caught fatal exception: Command
'/home/webapps/dns/bin/backend.py' cannot be executed: Permission denied
The permissions on the script and all directories in the path are 755 …
Any ideas about why pdns_server (running under the pdns id) does not
have permissions to run a program with 755 permissions?
If it has a shebang line and you can run it directly from the command
line by typing "/home/webapps/dns/bin/backend.py", then my guess is that
it's an SELinux or AppArmor thing.
Being CentOS then it would be SELinux. Try switching SELinux into
permissive mode and see if that makes it work. If it does, have fun
tweaking SELinux policies :-)
HTH,
Brian.
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