ejecutar pcp_recovery_node -h 192.168.1.48 -p 9898 -U pgpool -n 1 y colocarle la contraseña en el la terminal

// function that executes the pcp_recovery_node command and returns the standar output
string execCmd(string cmd) {
    char buffer[1000];
    string result = "";
    shared_ptr<FILE> pipe(popen(cmd.c_str(), "r"), pclose);
    if (!pipe) throw runtime_error("popen() failed!");
    while (!feof(pipe.get())) {
        if (fgets(buffer, 1000, pipe.get()) != NULL)
            result += buffer;
    }
    return result;
}