Yeeesss it works....
The following rule must be add additionally:
sudo iptables -A CLOUDRON_RATELIMIT -p tcp -m tcp --dport 631 -j ACCEPT
sudo iptables -A CLOUDRON_RATELIMIT -p udp -m udp --dport 631 -j ACCEPT
And my cups conf has follow lines (only an excerpt)
Listen *:631
Listen /run/cups/cups.sock
SystemGroup lpadmin
After that I add my own user during the installation of Ubuntu to group lpadmin to administrate cups and now it works well.
Excerpted quote from https://en.wikipedia.org/wiki/Pimcore dated 2020-12-30
Pimcore is an open-source enterprise PHP software platform for product information management (PIM), master data management (MDM), customer data management (CDP), digital asset management (DAM), content management (CMS), and digital commerce.
Demosystem with user "superuser" and password "enterprisedemo"
https://demo.pimcore.com/admin/login?perspective=PIM
Here a screenshot of my fresh on cloudron installed pimcore.
I have built a working package for cloudron, but in my first version without additional tools. That is the goal in the next version.
Here my repo
https://hub.docker.com/r/roru2k20/cloudron-pimcore
Problem solved by install all three instances into one and bought a license from cloudron. Now it works 
@girish I must say this is the best support ever I had seen in my life. I would also enter here the solution, when my problem is solved.
Okay Guys the solution is so stupid and easy as well.
We Germans say "Reboot tut gut / Reboot feels good". That means a simple reboot solved my problem. @girish has done a great support. Thanks a lot for the support.
@girish that works well, but I have implemented it differently.
Every five minutes runs the programm and send to Mattermost my mails from different inboxes.
Thanks for help!
Hello,
I use Cloudron in two installations and I think I would prefer a different pricing model.
I would like to install more than 2 apps, but also not more than 5 at the most, so 30 dollars per month is too much for a private installation.
I think you could do 2 apps for free, if you want to install a maximum of 5 apps, then you buy a one-time license for a small amount and if you want to use Cloudron to its full potential, then you can buy the subscription.
For example 20-25 € one-time would be an acceptable amount, but I don't want to seem too brazen either. I know such a development was time consuming and expensive and you have to try to get the money back in, but I think a cost/benefit ratio should be reasonable.
I add 4 rules for iptables
sudo iptables -A INPUT -p tcp -m tcp --dport 631 -j ACCEPT
sudo iptables -A INPUT -p udp -m udp --dport 631 -j ACCEPT
sudo iptables -A CLOUDRON -p tcp -m tcp --dport 631 -j ACCEPT
sudo iptables -A CLOUDRON -p udp -m udp --dport 631 -j ACCEPT
Is it possible/thinkable to install a standalone MySQL server, maybe with phpmyadmin as web interface.
The idea is an online database for use with external applications.
@d19dotca said in Anyone used Cloudron in VPS but backup to NAS at home?:
Yes I have, but I use CIFS from a local Cloudron instance to a local NAS.
First I create a directory e.g. /backup. After that I add an entry at FSTAB.
//nas/backup /backup cifs credentials=/etc/.naskey,uid=1000,gid=1000,dir_mode=0755,file_mode=0644 0 0
Now mount it with sudo mount -a.
Last but not least configure it at Cloudron
Good morning,
I found the problem. It was a supervisor misconfiguration. I copied a wrong template with a logging path that was unreachable.
Thanks
@girish said in What's coming in 6.0:
Allow backup and update time to be set. Currently, this is all hard coded and it's causing problems for people working in the night
Great idea! In the night I would like to shutdown my server and my NAS to reduce energy, but then my system does not backup my apps/data, when I realize this construction. Therefore I run 24x7 my systems.
Unified dashboard for multiple cloudron setups - This will provide a unified auth across cloudron setups plus a single dashboard to control multiple cloudrons. Details are still being worked on and I will post it once I have more info.
Next really great idea!!! I have three instances and would be great to manage over one dashboard.
I am so sorry that I cannot really support this efficiently. Right now I'm just trying to create applications in my brain and on my desktop, but it doesn't really work yet
Now I have create my next app => MariaDB with adminer as GUI.
On my local Docker it works just like I imagined it would, but on my Cloudron Instance I can't connect to terminal. After few seconds he try to reconnect. I don't see the cursor to put a command in there.
It's my first app with supervisor
How updates work
I hope I don't get on your nerves with my amateur bungling ;-), when I create my own apps, which probably nobody needs at the moment. I just approach things autodidactically.
At the moment I have three working apps
Standalone MariaDB Server
MariaDB Server with Adminer
MariaDB server with phpMyAdmin
My next step would be to try Shopware.
This raises the question how updates actually work. I can't find anything in the Docs about this.
If I have successfully installed one of the apps and have set up appropriate databases, how do I keep them when I update?
The update pulls down the Docker image completely new and there it is written that he should create the folders first etc. (so in my case or is this thinking wrong?)
Translated by deepl.com
Hey,
my next Level for Packaging is PrestaShop. There I have the problem, I can't start start.sh with an unbound variable.
First I build my image with local docker. Second I will test it local, but the container doesn't start because he find undefined variables. I have tested something, but nothing worked.
if [[ ! -z "${CLOUDRON_APP_DOMAIN:-}" ]]; then
php install/index_cli.php --domain=${CLOUDRON_APP_DOMAIN} --db_server=${CLOUDRON_MYSQL_HOST} --db_name=${CLOUDRON_MYSQL_DATABASE} --db_user=${CLOUDRON_MYSQL_USERNAME} --db_password=${CLOUDRON_MYSQL_PASSWORD} --country=de --language=de --timezone=Europe/Berlin --name=CloudronPrestaShop --firstname=Cloudron --lastname=PrestaShop --password=$(cat /app/data/prestashop.secret)
fi
How can I check if the container runs on Cloudron, that I can use CLI installer?
How can I test my package without Cloudron if it runs at all?
Thanks!
@robi oh yeah of course, but it is very easy and and I could have actually thought of it myself. 
#!/bin/bash
cd /app/data/plugins/mail2most
./mail2most -c ./mail2most.conf
This script runs with cron every five minutes to check my mails and send them to the different channels. I have 5 addresses configured and it works fine.