ispconfig — Нет доступных функций PHP MySQL. Не признавая, что модуль MySQL установлен

PHP 7.0 установлен с расширением mysql, загружается как в fpm, так и в cli. Но это видно при установке ISPConfig 3:

# php -m
[PHP Modules]
calendar
Core
ctype
curl
date
dom
exif
fileinfo
filter
ftp
gd
gettext
hash
iconv
igbinary
json
libxml
mbstring
mongodb
mysqli
mysqlnd
openssl
pcntl
pcre
PDO
pdo_mysql
Phar
posix
readline
redis
Reflection
session
shmop
SimpleXML
sockets
SPL
standard
sysvmsg
sysvsem
sysvshm
tokenizer
wddx
xml
xmlreader
xmlwriter
xsl
Zend OPcache
zlib

[Zend Modules]
Zend OPcache

/tmp/ispconfig3_install/install > root@vm18722 [php:7.0.5-system]
# php -q install.php--------------------------------------------------------------------------------
_____ ___________   _____              __ _         ____
|_   _/  ___| ___ \ /  __ \            / _(_)       /__  \
| | \ `--.| |_/ / | /  \/ ___  _ __ | |_ _  __ _    _/ /
| |  `--. \  __/  | |    / _ \| '_ \|  _| |/ _` |  |_ |
_| |_/\__/ / |     | \__/\ (_) | | | | | | | (_| | ___\ \
\___/\____/\_|      \____/\___/|_| |_|_| |_|\__, | \____/
__/ |
|___/
-------------------------------------------------------------------------------->> Initial configuration

Operating System: 14.04.4 LTS (Trusty Tahr)

Following will be a few questions for primary configuration so be careful.
Default values are in [brackets] and can be accepted with <ENTER>.
Tap in "quit" (without the quotes) to stop the installer.Select language (en,de) [en]:

Installation mode (standard,expert) [standard]:

Full qualified hostname (FQDN) of the server, eg server1.domain.tld  [vm18722]:

No PHP MySQL functions available. Please ensure that the PHP MySQL module is loaded.

/tmp/ispconfig3_install/install > root@vm18722 [php:7.0.5-system]