[release-4.6] Bug 1970140: Corefile: Set bufsize to 512 bytes for all servers #279
Conversation
The CoreDNS bufsize plugin was enabled with a set size of 1232 bytes in order to ensure that DNS queries bound for an upstream resolver contain EDNS OPT Resource Records. This resolved Bug 1949361. Some DNS Clients, such as Go's built-in stub DNS resolver, are not capable of handling DNS UDP messages that are larger than 512 bytes (even if the proper EDNS flags are included in the message). See golang/go#13561 & golang/go#6464 accordingly. This commit configures the bufsize plugin with a reduced bufsize of 512 bytes for all servers to ensure compatibility with primitive DNS clients. pkg/operator/controller/controller_dns_configmap.go: Set bufsize to 512 bytes for all servers. pkg/operator/controller/controller_dns_configmap_test.go: Update unit test cases. This commit is in support of Bug 196616 and should not cause any regression from the changes merged as a part of Bug 1949361.
|
@openshift-cherrypick-robot: Bugzilla bug 1967766 has been cloned as Bugzilla bug 1970140. Retitling PR to link against new bug. In response to this:
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/test-infra repository. |
openshift-ci
bot
changed the title
|
@openshift-cherrypick-robot: This pull request references Bugzilla bug 1970140, which is invalid:
Comment In response to this:
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/test-infra repository. |
openshift-ci
bot
added
bugzilla/severity-urgent
|
/retitle [release-4.6] Bug 1970140: Corefile: Set bufsize to 512 bytes for all servers |
openshift-ci
bot
changed the title
|
/bugzilla refresh |
|
[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: openshift-cherrypick-robot, sgreene570 The full list of commands accepted by this bot can be found here. The pull request process is described here
Needs approval from an approver in each of these files:
Approvers can indicate their approval by writing |
openshift-ci
bot
added
approved
|
@sgreene570: This pull request references Bugzilla bug 1970140, which is valid. The bug has been moved to the POST state. The bug has been updated to refer to the pull request using the external bug tracker. 6 validation(s) were run on this bug
Requesting review from QA contact: In response to this:
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/test-infra repository. |
openshift-ci
bot
removed
the
bugzilla/invalid-bug
|
/retest Please review the full test history for this PR and help us cut down flakes. |
2 similar comments
|
/retest Please review the full test history for this PR and help us cut down flakes. |
|
/retest Please review the full test history for this PR and help us cut down flakes. |
ecordell
added
the
cherry-pick-approved
|
@openshift-cherrypick-robot: All pull requests linked via external trackers have merged: Bugzilla bug 1970140 has been moved to the MODIFIED state. In response to this:
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/test-infra repository. |
This is an automated cherry-pick of #277
/assign sgreene570