Setting the priority to low as this shouldn't be triggered under normal circumstances, after https://bugzilla.redhat.com/show_bug.cgi?id=1870285. As a workaround it is possible to use an IP address instead of a hostname for the proxy.
Checked with 4.7.0-0.nightly-2020-12-04-013308, and now it should work well, so move to verified. $ oc get proxy -A -o yaml 130 ↵ apiVersion: v1 items: - apiVersion: config.openshift.io/v1 kind: Proxy metadata: creationTimestamp: "2020-12-09T05:01:47Z" generation: 1 ... name: cluster resourceVersion: "3039" selfLink: /apis/config.openshift.io/v1/proxies/cluster uid: 6237fddd-dba6-44c8-a67d-3a703824efbc spec: httpProxy: http://proxy-user1:HIDDEN@10.0.77.163.nip.io:3128 httpsProxy: http://proxy-user1:HIDDEN@10.0.77.163.nip.io:3128 noProxy: rhos-d.infra.prod.upshift.rdu2.redhat.com,oauth-openshift.apps.wj47ios1209c.1209-0eq.qe.rhcloud.com,api.wj47ios1209c.1209-0eq.qe.rhcloud.com,api-int.wj47ios1209c.1209-0eq.qe.rhcloud.com trustedCA: name: "" status: httpProxy: http://proxy-user1:HIDDEN@10.0.77.163.nip.io:3128 httpsProxy: http://proxy-user1:HIDDEN@10.0.77.163.nip.io:3128 noProxy: .cluster.local,.svc,10.128.0.0/14,127.0.0.1,169.254.169.254,172.30.0.0/16,192.168.0.0/18,api-int.wj47ios1209c.1209-0eq.qe.rhcloud.com,api.wj47ios1209c.1209-0eq.qe.rhcloud.com,etcd-0.,etcd-1.,etcd-2.,localhost,oauth-openshift.apps.wj47ios1209c.1209-0eq.qe.rhcloud.com,rhos-d.infra.prod.upshift.rdu2.redhat.com kind: List metadata: resourceVersion: "" selfLink: "" # Before scaleup: $ oc get machine -A NAMESPACE NAME PHASE TYPE REGION ZONE AGE openshift-machine-api wj47ios1209c-clk5g-master-0 Running m1.xlarge regionOne nova 109m openshift-machine-api wj47ios1209c-clk5g-master-1 Running m1.xlarge regionOne nova 109m openshift-machine-api wj47ios1209c-clk5g-master-2 Running m1.xlarge regionOne nova 109m openshift-machine-api wj47ios1209c-clk5g-worker-0-rl4dp Running m1.large regionOne nova 102m openshift-machine-api wj47ios1209c-clk5g-worker-0-t7bdk Running m1.large regionOne nova 102m $ oc get nodes -o wide NAME STATUS ROLES AGE VERSION INTERNAL-IP EXTERNAL-IP OS-IMAGE KERNEL-VERSION CONTAINER-RUNTIME wj47ios1209c-clk5g-master-0 Ready master 109m v1.19.2+ad738ba 192.168.2.232 <none> Red Hat Enterprise Linux CoreOS 47.83.202012032113-0 (Ootpa) 4.18.0-240.1.1.el8_3.x86_64 cri-o://1.20.0-0.rhaos4.7.git5e950f8.el8.26-dev wj47ios1209c-clk5g-master-1 Ready master 110m v1.19.2+ad738ba 192.168.3.88 <none> Red Hat Enterprise Linux CoreOS 47.83.202012032113-0 (Ootpa) 4.18.0-240.1.1.el8_3.x86_64 cri-o://1.20.0-0.rhaos4.7.git5e950f8.el8.26-dev wj47ios1209c-clk5g-master-2 Ready master 109m v1.19.2+ad738ba 192.168.3.206 <none> Red Hat Enterprise Linux CoreOS 47.83.202012032113-0 (Ootpa) 4.18.0-240.1.1.el8_3.x86_64 cri-o://1.20.0-0.rhaos4.7.git5e950f8.el8.26-dev wj47ios1209c-clk5g-worker-0-rl4dp Ready worker 91m v1.19.2+ad738ba 192.168.2.168 <none> Red Hat Enterprise Linux CoreOS 47.83.202012032113-0 (Ootpa) 4.18.0-240.1.1.el8_3.x86_64 cri-o://1.20.0-0.rhaos4.7.git5e950f8.el8.26-dev wj47ios1209c-clk5g-worker-0-t7bdk Ready worker 91m v1.19.2+ad738ba 192.168.0.87 <none> Red Hat Enterprise Linux CoreOS 47.83.202012032113-0 (Ootpa) 4.18.0-240.1.1.el8_3.x86_64 cri-o://1.20.0-0.rhaos4.7.git5e950f8.el8.26-dev # After scaleup: $ oc get machine -A NAMESPACE NAME PHASE TYPE REGION ZONE AGE openshift-machine-api wj47ios1209c-clk5g-master-0 Running m1.xlarge regionOne nova 121m openshift-machine-api wj47ios1209c-clk5g-master-1 Running m1.xlarge regionOne nova 121m openshift-machine-api wj47ios1209c-clk5g-master-2 Running m1.xlarge regionOne nova 121m openshift-machine-api wj47ios1209c-clk5g-worker-0-p6p4q Running m1.large regionOne nova 4m9s openshift-machine-api wj47ios1209c-clk5g-worker-0-rl4dp Running m1.large regionOne nova 114m openshift-machine-api wj47ios1209c-clk5g-worker-0-t7bdk Running m1.large regionOne nova 114m # openstack server list --name wj4 +--------------------------------------+-----------------------------------+--------+--------------------------------------------+----------------------------+-----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------------------------------+-----------------------------------+--------+--------------------------------------------+----------------------------+-----------+ | 4adb466b-b689-4b85-87de-fde162052331 | wj47ios1209c-clk5g-worker-0-rl4dp | ACTIVE | wj47ios1209c-clk5g-openshift=192.168.2.168 | rhcos-47.83.202012030221-0 | m1.large | | 0a704d97-2234-4f16-80da-b4501a8e2939 | wj47ios1209c-clk5g-worker-0-rdjl4 | ACTIVE | wj47ios1209c-clk5g-openshift=192.168.1.224 | rhcos-47.83.202012030221-0 | m1.large | | ffe86ac3-c19f-4eec-b243-da57fa18bd3d | wj47ios1209c-clk5g-worker-0-t7bdk | ACTIVE | wj47ios1209c-clk5g-openshift=192.168.0.87 | rhcos-47.83.202012030221-0 | m1.large | | e731c881-eed0-4537-b0ae-e30c972991ad | wj47ios1209c-clk5g-master-2 | ACTIVE | wj47ios1209c-clk5g-openshift=192.168.3.206 | rhcos-47.83.202012030221-0 | m1.xlarge | | be467f71-fc41-4e85-975a-fcf075ccf599 | wj47ios1209c-clk5g-master-0 | ACTIVE | wj47ios1209c-clk5g-openshift=192.168.2.232 | rhcos-47.83.202012030221-0 | m1.xlarge | | db3003fd-5c2f-4a6d-b8a6-d492dc13240b | wj47ios1209c-clk5g-master-1 | ACTIVE | wj47ios1209c-clk5g-openshift=192.168.3.88 | rhcos-47.83.202012030221-0 | m1.xlarge | +--------------------------------------+-----------------------------------+--------+--------------------------------------------+----------------------------+-----------+ $ oc get nodes -o wide NAME STATUS ROLES AGE VERSION INTERNAL-IP EXTERNAL-IP OS-IMAGE KERNEL-VERSION CONTAINER-RUNTIME wj47ios1209c-clk5g-master-0 Ready master 138m v1.19.2+ad738ba 192.168.2.232 <none> Red Hat Enterprise Linux CoreOS 47.83.202012032113-0 (Ootpa) 4.18.0-240.1.1.el8_3.x86_64 cri-o://1.20.0-0.rhaos4.7.git5e950f8.el8.26-dev wj47ios1209c-clk5g-master-1 Ready master 138m v1.19.2+ad738ba 192.168.3.88 <none> Red Hat Enterprise Linux CoreOS 47.83.202012032113-0 (Ootpa) 4.18.0-240.1.1.el8_3.x86_64 cri-o://1.20.0-0.rhaos4.7.git5e950f8.el8.26-dev wj47ios1209c-clk5g-master-2 Ready master 138m v1.19.2+ad738ba 192.168.3.206 <none> Red Hat Enterprise Linux CoreOS 47.83.202012032113-0 (Ootpa) 4.18.0-240.1.1.el8_3.x86_64 cri-o://1.20.0-0.rhaos4.7.git5e950f8.el8.26-dev wj47ios1209c-clk5g-worker-0-p6p4q Ready worker 19m v1.19.2+ad738ba 192.168.2.18 <none> Red Hat Enterprise Linux CoreOS 47.83.202012032113-0 (Ootpa) 4.18.0-240.1.1.el8_3.x86_64 cri-o://1.20.0-0.rhaos4.7.git5e950f8.el8.26-dev wj47ios1209c-clk5g-worker-0-rl4dp Ready worker 120m v1.19.2+ad738ba 192.168.2.168 <none> Red Hat Enterprise Linux CoreOS 47.83.202012032113-0 (Ootpa) 4.18.0-240.1.1.el8_3.x86_64 cri-o://1.20.0-0.rhaos4.7.git5e950f8.el8.26-dev wj47ios1209c-clk5g-worker-0-t7bdk Ready worker 120m v1.19.2+ad738ba 192.168.0.87 <none> Red Hat Enterprise Linux CoreOS 47.83.202012032113-0 (Ootpa) 4.18.0-240.1.1.el8_3.x86_64 cri-o://1.20.0-0.rhaos4.7.git5e950f8.el8.26-dev [root@wj47ios1209c-clk5g-worker-0-p6p4q core]# cat /etc/NetworkManager/dispatcher.d/30-resolv-prepender #!/bin/bash set -eo pipefail IFACE=$1 STATUS=$2 export HTTP_PROXY=http://proxy-user1:HIDDEN@10.0.77.163.nip.io:3128 export HTTPS_PROXY=http://proxy-user1:HIDDEN@10.0.77.163.nip.io:3128 export NO_PROXY=.cluster.local,.svc,10.128.0.0/14,127.0.0.1,169.254.169.254,172.30.0.0/16,192.168.0.0/18,api-int.wj47ios1209c.1209-0eq.qe.rhcloud.com,api.wj47ios1209c.1209-0eq.qe.rhcloud.com,etcd-0.,etcd-1.,etcd-2.,localhost,oauth-openshift.apps.wj47ios1209c.1209-0eq.qe.rhcloud.com,rhos-d.infra.prod.upshift.rdu2.redhat.com
This should be documented as a bugfix. @Emilien could you add to the Doc Text field above?
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (Moderate: OpenShift Container Platform 4.7.0 security, bug fix, and enhancement update), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHSA-2020:5633