Pipe between two daemons?
 

I have a script that must remain in php and run as a service and another script that must remain in python and run as a service. I need the first script to send data to the second script.

I have achieved this by echoing the data out of the first script so it gets sent to stdout and using a pipe to send it to the second script that listens to stdin and responds to the data as it receives it.

This works great when I call the scripts from the shell as:

This does not work when the aforementioned code is run as a service by systemd because systemd sends stdout to journald and there seems to be no way around that.

I have also tried to send the data from script1 to a named pipe where script2 reads from the same named pipe.

Again, works great until I try to daemonize the process.

Distro is Arch and this also cannot be changed.

Any help is appreciated.

(probably) You can have bidirectional communication between two python processes and you can fork that php task in one of them (which will inherit sockets).

I got it working by running the commands via sh in the systemd service files.