By default the systemd service file that comes with this package runs the service as root. That's not recommended in the redis docs too (http://redis.io/topics/security).

I suggest making a redis system user and running the service as that user. Something like:


post_install() {
datadir=var/lib/redis
groupadd --system redis &>/dev/null
useradd --system -g redis -d $datadir -s /bin/false redis &>/dev/null
if [[ ! -e $datadir ]]; then
install -dm700 -o redis -g redis $datadir
fi
}