[BlueOnyx:23344] 6109R: CentOS 8 and BlueOnyx 5210R OS templates available

[Michael Stauber]

Hi all,

A notice to Aventurin{e} 6109R users:

Beta versions of OS Template Caches for CentOS 8 and BlueOnyx 5210R are
now available.

Instructions how to install them:
==================================

1.) Do a "yum clean all" and "yum update" on your Aventurin{e} 6109R
node in order to get the latest "vztt" and "vztt-libs".

2.) In the Aventurin{e} 6109R GUI go to "Virtual Servers" / "OS
Templates" and click on the button "Search for more OS-Templates". In
that list you should then be able to see two new entries:

- centos-8-x86_64
- blueonyx-5210R-x86_64

Click on the small blue button of the OS-Template(s) you want to install
and wait a moment for the download to finish (should be fast).

Afterwards you'll be able to create new Containers using the new OS
templates.

Please note:
=============

This is beta and has some known issues and quirks, but none of them are
fatal or prevent usage.

1.) Creating a 5210R Container for the first time might cause a time-out
in the GUI, as the initial "on the fly"-build of the OS template takes a
while. The Container will still be created successfully - even if the
GUI times out. You can speed this up by going to "Virtual Servers" / "OS
Templates" and click on the icon next to the "blueonyx-5210R-x86_64"
entry. That will pre-create the OS template cache and Container creation
will be faster as it can use the cached version of it.

2.) Creating a CentOS 8 or 5210R Container with the checkbox "VNC
enabled" ticked will cause an error during Container creation. This is
being looked into and I suspect an updated "prl-disp" RPM will solve the
issue in the next few days. For now leave VNC access disabled for CentOS
8 or 5210R containers.

3.) The freshly created container needs a moment to finish setup-tasks
after it is started for the first time. Apache will refuse to start
until the setup tasks are finished, but then it will start automatically.

4.) Firewalld is enabled, but refuses to start due to being unable to
initialize the 'nf_contrack' kernel module. This is being looked into
and has to do with kernel modules and OpenVZ 7 settings which don't yet
play well together.

5.) Initial web based setup via the GUI *might* fail to set the MariaDB
root password, because MariaDB may not have finished starting yet. If
you see "Unable to connect to MariaDB" simply set the MariaDB "root"
password again via the GUI. The current password is then still empty/unset.

Special thanks and appreciation goes to Konstantin Volkov from
Virtuozzo, who gave me help and pointers how to get their yet unreleased
development version of the Centos 8 OS template cache working.

-- 
With best regards

Michael Stauber