There are many assumptions based on Red Hat's Perf&Scale labs
oVirt setup with VMs running OCP cluster using isolated networks
- 1 physical host installed with oVirt Engine, hosting dnsmasq for OCP network, routing to external networks, hosting NFS for VM initialization
- n-1 physical hosts installed as oVirt hosts, using vdsm-hook-localdisk for local storage. Storage is initialized when VM starts on a host for the first time, then it's reused. VMs are also pinned on their first power on via a vdsm-hook call back to API.
- OCP "baremetal" network running dnsmasq, routed through the engine host to public
- OCP "provisioning" network for PXE baremetal provisioning
- set of machines with bare RHEL 8.6 installed
- inventory service returning json:
{
"nodes": [
{
"pm_addr": "mgmt-FQDN",
}
]
}
- 1 external interface for connectivity, 2 interfaces connected to all hosts without DHCP, for OCP's baremetal and provisioning networks.
- interfaces need to be mapped from the inventory host names. Adjust in 05-get-inventory.sh or just create the right mapping yourself by creating files engine and hosts with
<fqdn>,<external_iface>,<baremetal_iface>,<provisioning_iface>
can be run individually for troubleshooting/reinstalls
- process inventory json and extract the first node as the engine host and the rest as oVirt hosts
- setup ssh keys (executor->engine+hosts, new engine key, engine->hosts)
- upgrade to 8.6, install packages
- insert reboot
- set up engine hosts's networking and install oVirt engine
- set up local storage on hosts
- add oVirt hosts
- add master and worker templates
- create all individual VMs
- start vBMC servers
- upload iso
- attach iso
- prepare install-config
- scale up
- starting VMs. Not needed for IPI so maybe not...
- better ovirtvbmc control. oVirt/vbmc#3
- skipping masters to support baremetal masters + virtual workers
- configure prometheus to run on masters, by default it runs on a random worker node and it becomes a huge memory hog with >100 nodes
- local mirror of RHCOS and/or OCP registry mirror