strace all the php-fpm worker processes

batch-strace.sh

#!/bin/bash

additional_strace_args="$1"

MASTER_PID=$(ps auwx | grep php-fpm | grep -v grep | grep 'master process'  | cut -d ' ' -f 6)

while read -r pid;
do
	if [[ $pid != $MASTER_PID ]]; then
		nohup strace -r -p "$pid" $additional_strace_args >"$pid.trc" 2>&1 &
	fi
done < <(pgrep php-fpm)