EMQX 6.1+ preallocates significant disk space for the MQ feature,
causing high CPU/disk usage on small containers (emqx/emqx#16649).
- Increase default disk from 4GB to 6GB
- Add read -rp prompt during install to optionally disable MQ feature
via mq.enable=false in emqx.conf (reduces disk/CPU overhead)
- Setting is in install script (not CT script) per reviewer feedback
Co-authored-by: sim-san <sim-san@users.noreply.github.com>
* improve error handling to show more details
* improve the way it checks for root password
* consistant getty_override
* streamline verbose mode
* remove v4 scripts
* small tweaks