PHP tracing tool is a command line tool written in python 3 - based on the BCC toolkit (eBPF) - for PHP code monitoring.
Built to help you understand your program behavior in a "normal" environment, directly in production.
It gives a deep observability of the application without adding specific php debugging code : function execution flow with latency of each function, tracing I/O syscalls with details …
You can also monitor your containerized application because it works on the PID of the php process, it discuss directly with the kernel (eBPF), there is no impact on your application. You just need a PHP compiled with the --enable-dtrace debug option (the image is in the repo)
This example trace a demo php program with a google maps API call.
-h : help
-S : print the syscalls details inside each function
--check : print the generated BPF C program and quit
--debug : debug mode: print the generated BPF C program
Be sure to have BCC on your machine (a Debian Buster).
apt-get install bpfcc-tools python3-bpfcc
Execute the script as root :
sudo ./php_tool.py -h
Setup the vagrant machine and go in
cd vagrant-buster && vagrant up
vagrant ssh
cd /vagrant/php_tool
Launch the PHP demo and nginx containers
make
Instrumenting the code with php_tool
sudo ./php_tool.py -S PID [PID ...]
Usage
sudo ./php_tool.py
There is also a Wordpress demo image.
Apache-2.0 © 2019 Nicolas Dubouilh, Mathieu Lecarme
