gitea-pages/engineering-guide/test_systems.md

Test Systems

List of test nodes and the idea behind.

Core Linux Infrastructure Systems

• sysdb-test.psi.ch aka lx-sysdb-test-01.psi.ch as test Sysdb server
• puppet00-test.psi.ch as test Puppet server

On these systems there is currently only the lxdev sysdb environment available/configured.

To get a node to boot into the test setup, you need a special network boot configuration for grub in the network-boot repo. Best do in grub.d a symlink from the full qualified hostname to use-sysdb-test. Then in the root directory you need another symlink from grub.cfg-01-$MAC (use dashes instead of colons to separte the MAC address bytes) to the symlink with your hostname in grub.d. This last file is looked up by grub during network boot. The symlink cascade is to know what MAC address belongs to what host and what is the intend of the special configuration.

Icinga2 Test Server

Here we mostly deal with the master:

• Primary vmonma02a.psi.ch (with Director)
• Secondary vmonma02b.psi.ch

The schema with all nodes of the test setup you find in the Monitoring Environment Slides page 3.

Test RHEL Nodes

This systems are in the lxdev sysdb environment.

Here we have minimal configuration (noconfig) to test the default setup and a more extensive configuration (muchconfig) to have a test bed with more complex settings.

noconfig Servers

• lxdev00.psi.ch running RHEL7
• lxdev01.psi.ch running RHEL8 with managed network configuration and static IP automatically read from DNS
• lxdev02.psi.ch running RHEL9 with managed network configuration and static IP automatically read from DNS

noconfig Workstations

• lxdev03 running RHEL7
• lxdev04 running RHEL8
• lxdev05 running RHEL9

muchconfig Workstations

• lxdev6 running RHEL7
• lxdev7 running RHEL8
• lxdev8 running RHEL9

All of these have a serial port added to the virtual hardware and the output of it is sent to a file which is accessible on lxsup.psi.ch on /data/serial_console/

Then each of these hosts can monitor the network traffic of the two other hosts. The interface ens224 will get a copy of the network traffic from the lower of the other two hosts, whereas the interface ens256 gets the traffic of the node with the bigger number.

Test DMZ Nodes

This system are in the normal production lx sysdb environment in the dmz puppet group:

• lx-test-dmz-01.psi.ch
• lx-test-dmz-02.psi.ch