Overview - What is PageKite?

pagekite.net
PageKite is a system for connecting your localhost servers to the public Internet, giving them names and making them globally accessible. It works on most common operating systems and it doesn't matter what kind of Internet connection you have.

Using a laptop over 3G? No problem.
A desktop sharing an ADSL line with 10 other computers? That's fine too.
Is port 80 already taken on your virtual cloud server? PageKite can help.

PageKite opens up a whole world of new possibilities - see below for some examples of what it can do for you. Maybe you'll come up with something we didn't even think of!

How Can PageKite Help Me?

Designers

Temporarily share and show off your designs and works in progress, without having to upload them first ...

Web Developers

Test live sites directly off your workstation or laptop, saving time by not having to deploy to a staging server in every single iteration ...

Hackers & Tinkerers

Host a live web or SSH server on any computer and any network, without having to worry about IP addresses and port number, routers and DNS ...

Admins & Tech Support

Directly access machines you are responsible for whenever they are on-line, even if they are mobile or trapped behind restrictive firewalls ...

Embedded Developers

Take part in the Internet Of Things by giving all your devices names and a live presence on-line - using standard, royalty free protocols ...

Students

Learn by doing: in minutes you can have a live Internet server running on your own computer, visible to the world ...

Parents

Share family photos and videos with loved ones, without having to put your most personal data under some corporation's control ...

...

kudos to @girish
he found the real pbl. (out of i-nodes) within minutes.
from there, we could nail down the cause, by following this:
https://unix.stackexchange.com/questions/26598/how-can-i-increase-the-number-of-inodes-in-an-ext4-filesystem

TL,DR:
one cannot raise i-nodes after fs creation. normally, a tar from rootfs, reformat the rootfs, and restore would be necessary.
but to find out, who is consuming all the inodes, one can do the following:

try du -s --inodes * 2>/dev/null |sort -g then cd into the last dir in output and repeat.

Full Disclosure: not all OS's support --inodes flag for du command (my Mac OS does not) but many Linux OS's do.

one has to cd into the dir with the most i-nodes, recursively going down the tree and finally find the dir with the biggest i-node consumption.

in this case, as girish had mentioned, it was caused by not right configured nullmailer, writing tons of error-msg to /var/spool/nullmailer/failed useing 4.4M i-nodes…
deleting that dir eased the situation ad hoc.
rebooting the server and restart all failed apps (GUI & CLI) fixed it.

thanks for all your help

kudos to @girish
he found the real pbl. (out of i-nodes) within minutes.
from there, we could nail down the cause, by following this:
https://unix.stackexchange.com/questions/26598/how-can-i-increase-the-number-of-inodes-in-an-ext4-filesystem

TL,DR:
one cannot raise i-nodes after fs creation. normally, a tar from rootfs, reformat the rootfs, and restore would be necessary.
but to find out, who is consuming all the inodes, one can do the following:

try du -s --inodes * 2>/dev/null |sort -g then cd into the last dir in output and repeat.

Full Disclosure: not all OS's support --inodes flag for du command (my Mac OS does not) but many Linux OS's do.

one has to cd into the dir with the most i-nodes, recursively going down the tree and finally find the dir with the biggest i-node consumption.

in this case, as girish had mentioned, it was caused by not right configured nullmailer, writing tons of error-msg to /var/spool/nullmailer/failed useing 4.4M i-nodes…
deleting that dir eased the situation ad hoc.
rebooting the server and restart all failed apps (GUI & CLI) fixed it.

thanks for all your help

@girish
hey, thanks for help.
I already did sent a mail to support with the info, a few hours ago. Didn't you receive that?
it's from an ...r@gmx.net address.

@subven
yes, sure
/tmp is not a tempfs, it's on root, and GBs free.
it seems to have to do with cgroups and the space within the containers.
when the system CTs run and one app, then its exhausted.
I tried an older kernel, same.
??

thx everybody for trying to help.

I think thats a pure cloudron/system/cgroup pbl. as I haven't touched that system.
and never came around that on my various other docker projects/server.

@subven,
that's all checked. n pbls. there.
/tmp & /dev/pts are are pseudofilesystems and are not managed via fstab.
they are too smale.

@girish can you pls. check on this. services are down for 24h now

hey,
today I'm experiening a major downtime with nearly all cloudron apps.
trying to restart the apps gives the following error:
An error occurred during the restart app operation: server error: (HTTP code 500) server error - Cannot restart container 9b309fe6-a68b-47d5-86d7-2797aa67ccdd: failed to create OCI runtime console socket: mkdir /tmp/pty465273103: no space left on device: unknown

reboot did not change the situation.
most apps are down.
there was NO notification!!

other things that do not work is bash-completion, apt, etc.
they all use /tmp, which seems too small/full.

from the sysadmin-site, I did not make any changes to the setup in the last week.

CL 5.0.6 runs on a VM 8G RAM, 2 Proc
UBU 18.04

TIA
guenter

Overview - What is PageKite?

pagekite.net
PageKite is a system for connecting your localhost servers to the public Internet, giving them names and making them globally accessible. It works on most common operating systems and it doesn't matter what kind of Internet connection you have.

Using a laptop over 3G? No problem.
A desktop sharing an ADSL line with 10 other computers? That's fine too.
Is port 80 already taken on your virtual cloud server? PageKite can help.

PageKite opens up a whole world of new possibilities - see below for some examples of what it can do for you. Maybe you'll come up with something we didn't even think of!

How Can PageKite Help Me?

Designers

Temporarily share and show off your designs and works in progress, without having to upload them first ...

Web Developers

Test live sites directly off your workstation or laptop, saving time by not having to deploy to a staging server in every single iteration ...

Hackers & Tinkerers

Host a live web or SSH server on any computer and any network, without having to worry about IP addresses and port number, routers and DNS ...

Admins & Tech Support

Directly access machines you are responsible for whenever they are on-line, even if they are mobile or trapped behind restrictive firewalls ...

Embedded Developers

Take part in the Internet Of Things by giving all your devices names and a live presence on-line - using standard, royalty free protocols ...

Students

Learn by doing: in minutes you can have a live Internet server running on your own computer, visible to the world ...

Parents

Share family photos and videos with loved ones, without having to put your most personal data under some corporation's control ...

...