openstack
/
tripleo-heat-templates
Code Issues Proposed changes

Mount /boot from the host within the nova-compute container 

libguestfs expects to find /boot/vmlinuz-* for the running version of
the kernel. This check is duplicated in nova-compute when libguestfs has
failed to launch, providing a useful bread crumb for operators [1].

Obviously when this is called from within the nova-compute container in
the context of a TripleO deployment this can easily fail after a minor
update that has pulled in a newer container containing a newer kernel.
This check could also fail in the opposite case if the host kernel is
updated past the version present in the container.

This change works around this by simply passing /boot as read-only
through to the nova-compute container ensure libguestfs is able to
always find the correct version of vmlinuz.

This should also allow us to eventually drop the kernel RPM from the
nova-compute container that has been a constant source of maintenance
overhead in terms of CVEs etc.

[1] aa096fd183/nova/virt/disk/vfs/guestfs.py (L75-L97)

Change-Id: Iadef8f3300bb1b5b995052c1a35a1becbfd5730c
This commit is contained in:
Lee Yarwood 2019-12-13 12:01:57 +00:00
parent 24f0613d2c
commit 9c5c36632d
1 changed files with 1 additions and 0 deletions
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1
deployment/nova/nova-compute-container-puppet.yaml
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@ -709,6 +709,7 @@ outputs:
- /var/lib/libvirt:/var/lib/libvirt:shared,z
- /sys/class/net:/sys/class/net
- /sys/bus/pci:/sys/bus/pci
- /boot:/boot:ro
-
# podman fails to relable if nova_nfs_enabled where we have
# the nfs share mounted to /var/lib/nova/instances