opendev/system-config
Code Issues Proposed changes

Add cpu count check to launch node

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We've seen Noble nodes booting in rax legacy come up with a single vcpu
even when we've requested 8. Avoid unexpected reduction in CPU counts
when booting new noble nodes by explicitly checking for at least 2 CPUs.
We don't want to discover a month after replacing a server that we need
to replace it again because it booted on the wrong hypervisor.

Change-Id: I043dc8d6eb1131d0fec49734c7959e6c123f8f8f
This commit is contained in:
Clark Boylan 2025-02-03 09:55:44 -08:00
parent dbb13be886
commit 59ca749779
1 changed files with 9 additions and 1 deletions

10
launch/src/opendev_launch/launch_node.py

@ -131,9 +131,17 @@ def bootstrap_server(server, key, name, volume_device, keep,
ssh_client = utils.ssh_connect(ip, 'root', ssh_kwargs, timeout=timeout)
if "sse4_2" not in ssh_client.ssh('cat /proc/cpuinfo', quiet=True)[1]:
cpuinfo = ssh_client.ssh('cat /proc/cpuinfo', quiet=True)[1]
if "sse4_2" not in cpuinfo:
raise Exception("CPU does not support x86-64-v2 (sse4_2)")
cpucount = 0
for line in cpuinfo.split(\n):
if line.startswith('processor\t:'):
cpucount = cpucount + 1
if cpucount < 2:
raise Exception("Node has less than 2 CPUs")
if not ignore_ipv6:
# Something up with RAX images that they have the ipv6 interface in
# /etc/network/interfaces but eth0 hasn't noticed yet; reload it