Host::connect PHP 메소드

    private function connect($host, $target, $pwd = NULL)
    {
        $this->name = $host;
        $this->log->verbose("Connecting to {$host} on port {$target['ssh_port']}");
        if (!($conn = ssh2_connect($host, $target['ssh_port'], NULL, array('disconnect', array($this, 'disconnect'))))) {
            $this->log->error("Unable to connect");
        }
        $this->log->verbose("Authenticating as {$target['deploy_user']} using {$target['public_key_file']}");
        if (!ssh2_auth_pubkey_file($conn, $target['deploy_user'], $target['public_key_file'], $target['private_key_file'], $pwd)) {
            $this->log->error("Unable to authenticate");
        }
        $this->log->ssh[$host] = $this;
        return $conn;
    }