Ironic inspector dnsmasq can offer the same IP address to different hosts

[Pierre Riteau]

While PXE booting 10 bare metal hosts at a time to inspect them, I noticed several of them failing to PXE boot (3 of them failed each time, though I tried only twice).

This appears to be caused to the ironic_dnsmasq service providing the same IP address to multiple hosts. This is linked to the use of the dhcp-sequential-ip configuration option.

Unless there is a strong need for this option, it should be removed.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/kolla-ansible/+/859974

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/kolla-ansible/+/859974
Committed: https://opendev.org/openstack/kolla-ansible/commit/9ce47b2fff74e943a1a63cf56a19708b41e5195b
Submitter: "Zuul (22348)"
Branch: master

commit 9ce47b2fff74e943a1a63cf56a19708b41e5195b
Author: Pierre Riteau <email address hidden>
Date: Fri Sep 30 13:26:23 2022 +0200

    Remove dhcp-sequential-ip in ironic dnsmasq config

    With this option enabled, dnsmasq can offer the same IP address to
    multiple hosts when their requests are close to each other. Remove this
    option in order to use the built-in hashing mechanism which will
    allocate random IP addresses, which should be less likely to conflict.

    Closes-Bug: #1991390
    Change-Id: I09a9fa2d0c54635b899ad7906cc2e2e4580ef5ad

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/yoga
Review: https://review.opendev.org/c/openstack/kolla-ansible/+/860138

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/xena
Review: https://review.opendev.org/c/openstack/kolla-ansible/+/860139

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/wallaby
Review: https://review.opendev.org/c/openstack/kolla-ansible/+/860140

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/kolla-ansible/+/860140
Committed: https://opendev.org/openstack/kolla-ansible/commit/7967376a69496dcd6908842d7edd9ca15338284e
Submitter: "Zuul (22348)"
Branch: stable/wallaby

commit 7967376a69496dcd6908842d7edd9ca15338284e
Author: Pierre Riteau <email address hidden>
Date: Fri Sep 30 13:26:23 2022 +0200

    Remove dhcp-sequential-ip in ironic dnsmasq config

    With this option enabled, dnsmasq can offer the same IP address to
    multiple hosts when their requests are close to each other. Remove this
    option in order to use the built-in hashing mechanism which will
    allocate random IP addresses, which should be less likely to conflict.

    Closes-Bug: #1991390
    Change-Id: I09a9fa2d0c54635b899ad7906cc2e2e4580ef5ad
    (cherry picked from commit 9ce47b2fff74e943a1a63cf56a19708b41e5195b)

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/kolla-ansible/+/860139
Committed: https://opendev.org/openstack/kolla-ansible/commit/d07954295f6789283792db755e3b7bc32321015d
Submitter: "Zuul (22348)"
Branch: stable/xena

commit d07954295f6789283792db755e3b7bc32321015d
Author: Pierre Riteau <email address hidden>
Date: Fri Sep 30 13:26:23 2022 +0200

    Remove dhcp-sequential-ip in ironic dnsmasq config

    With this option enabled, dnsmasq can offer the same IP address to
    multiple hosts when their requests are close to each other. Remove this
    option in order to use the built-in hashing mechanism which will
    allocate random IP addresses, which should be less likely to conflict.

    Closes-Bug: #1991390
    Change-Id: I09a9fa2d0c54635b899ad7906cc2e2e4580ef5ad
    (cherry picked from commit 9ce47b2fff74e943a1a63cf56a19708b41e5195b)

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/kolla-ansible/+/860138
Committed: https://opendev.org/openstack/kolla-ansible/commit/4082de1cca1f12afe42a4e273ed172c747414d2e
Submitter: "Zuul (22348)"
Branch: stable/yoga

commit 4082de1cca1f12afe42a4e273ed172c747414d2e
Author: Pierre Riteau <email address hidden>
Date: Fri Sep 30 13:26:23 2022 +0200

    Remove dhcp-sequential-ip in ironic dnsmasq config

    With this option enabled, dnsmasq can offer the same IP address to
    multiple hosts when their requests are close to each other. Remove this
    option in order to use the built-in hashing mechanism which will
    allocate random IP addresses, which should be less likely to conflict.

    Closes-Bug: #1991390
    Change-Id: I09a9fa2d0c54635b899ad7906cc2e2e4580ef5ad
    (cherry picked from commit 9ce47b2fff74e943a1a63cf56a19708b41e5195b)

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/kolla-ansible 13.6.0 release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/kolla-ansible 14.6.0 release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/kolla-ansible 15.0.0.0rc1 release candidate.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/kolla-ansible wallaby-eol release.