OCPBUGS-57364: Fix IP address for default AWS DNS resolver

[sadasu]

When ClusterHostedDNS (or custom-dns) is enabled on AWS, the aws-update-dns service running on the control plane, was incorrectly setting 169.254.169.254 as the AWS default Nameserver.

Fixed this IP to 169.254.169.253 , based on Understanding Amazon DNS

[openshift-ci-robot]

@sadasu: This pull request references Jira Issue OCPBUGS-57364, which is valid.

3 validation(s) were run on this bug

• bug is open, matching expected state (open)
• bug target version (4.21.0) matches configured target version for branch (4.21.0)
• bug is in the state POST, which is one of the valid states (NEW, ASSIGNED, POST)

Requesting review from QA contact:
/cc @yunjiang29

The bug has been updated to refer to the pull request using the external bug tracker.

In response to this:

When ClusterHostedDNS (or custom-dns) is enabled on AWS, the aws-update-dns service running on the control plane, was incorrectly setting 169.254.169.254 as the AWS default Nameserver.

Fixed this IP to 169.254.169.253 , based on Understanding Amazon DNS

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the openshift-eng/jira-lifecycle-plugin repository.

[sadasu]

/retest-required

[gpei]

/payload-job pull-ci-openshift-installer-main-e2e-aws-custom-dns-techpreview

[openshift-ci]

@gpei: trigger 0 job(s) for the /payload-(with-prs|job|aggregate|job-with-prs|aggregate-with-prs) command

[openshift-ci]

@sadasu: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/okd-scos-e2e-aws-ovn	1aac42b	link	false	/test okd-scos-e2e-aws-ovn
ci/prow/bootstrap-unit	1aac42b	link	false	/test bootstrap-unit

Full PR test history. Your PR dashboard.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository. I understand the commands that are listed here.

[gpei]

/verified by @gpei

Reference job: https://qe-private-deck-ci.apps.ci.l2s4.p1.openshiftapps.com/view/gs/qe-private-deck/pr-logs/pull/openshift_release/70591/rehearse-70591-periodic-ci-openshift-verification-tests-main-installer-rehearse-4.21-installer-rehearse-aws/1988229654103724032

The installation got passed with this PR, the DNS server on masters/workers is configured with node IP and Amazon DNS server

sh-5.1# cat /etc/resolv.conf 
# Generated by NetworkManager
nameserver 10.0.23.117
nameserver 169.254.169.253

[openshift-ci-robot]

@gpei: This PR has been marked as verified by @gpei.

In response to this:

/verified by @gpei

Reference job: https://qe-private-deck-ci.apps.ci.l2s4.p1.openshiftapps.com/view/gs/qe-private-deck/pr-logs/pull/openshift_release/70591/rehearse-70591-periodic-ci-openshift-verification-tests-main-installer-rehearse-4.21-installer-rehearse-aws/1988229654103724032

The installation got passed with this PR, the DNS server on masters/workers is configured with node IP and Amazon DNS server

sh-5.1# cat /etc/resolv.conf 
# Generated by NetworkManager
nameserver 10.0.23.117
nameserver 169.254.169.253

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the openshift-eng/jira-lifecycle-plugin repository.

[tthvo]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: sadasu, tthvo
Once this PR has been reviewed and has the lgtm label, please assign rishabhsaini for approval. For more information see the Code Review Process.

The full list of commands accepted by this bot can be found here.

Needs approval from an approver in each of these files:

• OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment