Build macos `oc` binary with CGO_ENABLED=1 so that it honours /etc/resolver? #23266

praveenkumar · 2019-06-25T05:13:31Z

Version

$ oc version
oc v4.0.0-0.171.0
kubernetes v1.12.4+a532756e37

Steps To Reproduce

Create a cluster locally which doesn't have public dns lookup (you can use crc for it).
Don't append the dns details to /etc/resolve.conf but use /etc/resolver/<whatever_dns> , in our case we use /etc/resolver/testing.
Try to open the web console on the browser which works and it honour the resolver file.
Try to use oc cli to login to cluster, it doesn't work until you add that dns to /etc/resolv.conf

Current Result

User need to add the dns details to /etc/resolv.conf, where most of the app on the Mac does honour the resolver file and works.

Expected Result

Openshift client binary should also honour the resolver directory files.

Additional Information

[try to run $ oc adm diagnostics (or oadm diagnostics) command if possible]
[if you are reporting issue related to builds, provide build logs with BUILD_LOGLEVEL=5]
[consider attaching output of the $ oc get all -o json -n <namespace> command to the issue]
[visit https://docs.openshift.org/latest/welcome/index.html]

The text was updated successfully, but these errors were encountered:

This will allow us to add instance IP on fly so user doesn't need to do it manually. As preflight check we are also changing the permission for host /etc/resolv.conf file to provide RW access to current user. Upstream side issue to make sure oc should honour the resolver file. - openshift/origin#23266

praveenkumar · 2019-07-04T08:23:51Z

golang/go#12524

gbraad · 2019-07-04T08:25:07Z

especially: golang/go#12524 (comment) Enabling CGO would seem to allow DNS lookups to happen using /etc/resolver.

cfergeau · 2019-07-05T09:29:46Z

After building oc with CGO_ENABLED=1, I can confirm it will use /etc/resolver/ content for DNS resolution

$ cat /etc/resolv.conf
search cdg.redhat.com redhat.com win.redhat.com
nameserver 10.x...
nameserver 10.y...

$ cat /etc/resolver/testing 
port 53
nameserver 192.168.64.8

$ oc config view
apiVersion: v1
clusters:
- cluster:
    certificate-authority-data: DATA+OMITTED
    server: https://api.crc.testing:6443
  name: crc

$ ~/go/bin/oc get nodes
NAME                 STATUS   ROLES           AGE   VERSION
crc-fsjcf-master-0   Ready    master,worker   11d   v1.13.4+9252851b0

The binary from https://mirror.openshift.com/pub/openshift-v4/clients/oc/latest/macosx/oc.tar.gz fails to resolve the DNS name:

$ oc get nodes
Unable to connect to the server: dial tcp: lookup api.crc.testing on 10.38.5.26:53: no such host

praveenkumar · 2019-07-05T09:47:56Z

kubernetes/kubernetes#23130 upstream issue from kubernetes side.

jankleinert · 2019-07-26T12:36:55Z

This seems to impact odo as well - does that need to be raised as a separate issue in their tracker?

sspeiche · 2019-07-26T12:51:21Z

Note this affects openshift-installer and other binaries

gbraad · 2019-10-10T10:58:16Z

@derekwaynecarr how to handle this? So far we haven't gotten anywhere with this and it affects us on macOS, and we find out the workaround with /etc/hosts we have is a rat's nest, as it is not guaranteed to work due to permissions being modified outside of our control.

sspeiche · 2019-10-10T16:59:14Z

Does kubectl have this same problem too?

cfergeau · 2019-10-11T10:49:25Z

I just tried it, and yes it behaves the same, it needs an entry in /etc/hosts and is not making use of /etc/resolver/

sspeiche · 2019-10-11T12:54:11Z

@cfergeau Should this be raised upstream? Seems like odo should follow what kubectl does.

Curious what @soltysh thinks

gbraad · 2019-10-11T13:03:05Z

There is no impact to the software delivered, but rather inthe build process as Apple-branded hardware needs to be involved, although this can be solved by using CircleCI.

soltysh · 2019-10-14T13:19:56Z

Curious what @soltysh thinks

If we want that fixed, this has to be fixed upstream first, imo.

openshift-bot · 2020-01-12T17:35:33Z

Issues go stale after 90d of inactivity.

Mark the issue as fresh by commenting /remove-lifecycle stale.
Stale issues rot after an additional 30d of inactivity and eventually close.
Exclude this issue from closing by commenting /lifecycle frozen.

If this issue is safe to close now please do so with /close.

/lifecycle stale

cfergeau · 2020-01-13T11:08:25Z

/remove-lifecycle stale

openshift-bot · 2020-04-12T13:03:13Z

Issues go stale after 90d of inactivity.

Mark the issue as fresh by commenting /remove-lifecycle stale.
Stale issues rot after an additional 30d of inactivity and eventually close.
Exclude this issue from closing by commenting /lifecycle frozen.

If this issue is safe to close now please do so with /close.

/lifecycle stale

cfergeau · 2020-04-14T09:18:05Z

/remove-lifecycle stale

openshift-bot · 2020-07-13T12:53:59Z

Issues go stale after 90d of inactivity.

Mark the issue as fresh by commenting /remove-lifecycle stale.
Stale issues rot after an additional 30d of inactivity and eventually close.
Exclude this issue from closing by commenting /lifecycle frozen.

If this issue is safe to close now please do so with /close.

/lifecycle stale

cfergeau · 2020-08-04T12:52:43Z

/lifecycle frozen

daliborfilus · 2024-04-29T09:17:53Z

This issue is solved in openshift/oc#315

praveenkumar · 2024-05-01T06:39:22Z

/close

openshift-ci · 2024-05-01T06:39:35Z

@praveenkumar: Closing this issue.

In response to this:

/close

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.

praveenkumar changed the title ~~Openshift client binary oc doesn't honour /etc/resolver for mac.~~ Build macos oc binary with CGO_ENABLED=1 so that it honours /etc/resolver? Jul 5, 2019

cfergeau mentioned this issue Jul 5, 2019

Getting error while start the crc on macOS crc-org/crc#293

Closed

gbraad mentioned this issue Jul 12, 2019

Use /etc/hosts instead /etc/resolv.conf for OSX crc-org/crc#314

Closed

gbraad mentioned this issue Aug 30, 2019

crc start fails after crc stop (hosts file not readable/writeable) crc-org/crc#513

Closed

gbraad mentioned this issue Oct 10, 2019

[BUG] FATA /etc/hosts is not readable/writable by the current user crc-org/crc#700

Closed

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openshift-ci bot closed this as completed May 1, 2024

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Build macos `oc` binary with CGO_ENABLED=1 so that it honours /etc/resolver? #23266

Build macos `oc` binary with CGO_ENABLED=1 so that it honours /etc/resolver? #23266

praveenkumar commented Jun 25, 2019

praveenkumar commented Jul 4, 2019

gbraad commented Jul 4, 2019 •

edited

cfergeau commented Jul 5, 2019

praveenkumar commented Jul 5, 2019

jankleinert commented Jul 26, 2019

sspeiche commented Jul 26, 2019

gbraad commented Oct 10, 2019 •

edited

sspeiche commented Oct 10, 2019

cfergeau commented Oct 11, 2019

sspeiche commented Oct 11, 2019

gbraad commented Oct 11, 2019 •

edited

soltysh commented Oct 14, 2019

openshift-bot commented Jan 12, 2020

cfergeau commented Jan 13, 2020

openshift-bot commented Apr 12, 2020

cfergeau commented Apr 14, 2020

openshift-bot commented Jul 13, 2020

cfergeau commented Aug 4, 2020

daliborfilus commented Apr 29, 2024

praveenkumar commented May 1, 2024

openshift-ci bot commented May 1, 2024

Build macos oc binary with CGO_ENABLED=1 so that it honours /etc/resolver? #23266

Build macos oc binary with CGO_ENABLED=1 so that it honours /etc/resolver? #23266

Comments

praveenkumar commented Jun 25, 2019

Version

Steps To Reproduce

Current Result

Expected Result

Additional Information

praveenkumar commented Jul 4, 2019

gbraad commented Jul 4, 2019 • edited

cfergeau commented Jul 5, 2019

praveenkumar commented Jul 5, 2019

jankleinert commented Jul 26, 2019

sspeiche commented Jul 26, 2019

gbraad commented Oct 10, 2019 • edited

sspeiche commented Oct 10, 2019

cfergeau commented Oct 11, 2019

sspeiche commented Oct 11, 2019

gbraad commented Oct 11, 2019 • edited

soltysh commented Oct 14, 2019

openshift-bot commented Jan 12, 2020

cfergeau commented Jan 13, 2020

openshift-bot commented Apr 12, 2020

cfergeau commented Apr 14, 2020

openshift-bot commented Jul 13, 2020

cfergeau commented Aug 4, 2020

daliborfilus commented Apr 29, 2024

praveenkumar commented May 1, 2024

openshift-ci bot commented May 1, 2024

Build macos `oc` binary with CGO_ENABLED=1 so that it honours /etc/resolver? #23266

Build macos `oc` binary with CGO_ENABLED=1 so that it honours /etc/resolver? #23266

gbraad commented Jul 4, 2019 •

edited

gbraad commented Oct 10, 2019 •

edited

gbraad commented Oct 11, 2019 •

edited