1. в терминале:
cp /etc/php.d/20-curl.ini.disabled /etc/php.d/20-curl.ini
service httpd restart
2 и 3 — [URL=https://dev.1c-bitrix.ru/learning/course/index.php?COURSE_ID=37&LESSON_ID=9363]https://dev.1c-bitrix.ru/learning/course/index.php?COURSE_ID=37&LESSON_ID=9363[/URL]