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Bug
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Resolution: Not a Bug
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Normal
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None
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4.11.z
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Quality / Stability / Reliability
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False
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None
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None
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None
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None
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None
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None
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ShiftStack Sprint 256, ShiftStack Sprint 263
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2
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+
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None
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None
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None
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None
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None
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None
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None
Description of problem:
When a chrony.conf references pool "0.rhel.pool.ntp.org" as documented in https://docs.openshift.com/container-platform/4.11/installing/install_config/installing-customizing.html#installation-special-config-chrony_installing-customizing the time syncing stops working and cluster fires NodeClockNotSynchronising alerts.
Version-Release number of selected component (if applicable):
OpenShift 4.11.18
How reproducible:
Steps to Reproduce:
1. Install 4.11.18 2. oc get nodes 3. oc debug node/some-node-from-previous-command 4. cat /etc/chrony.conf 5. chronyc sources 6. update pool to 0.rhel.pool.ntp.org 7. sudo systemctl restart chronyd 8. chronyc sources
Actual results:
Servers could be different, but columns should not contain that many zeros sh-4.4# chronyc sources MS Name/IP address Stratum Poll Reach LastRx Last sample =============================================================================== ^? tara.castrovalva.org 0 7 0 - +0ns[ +0ns] +/- 0ns ^? time.skylineservers.com 0 7 0 - +0ns[ +0ns] +/- 0ns ^? ntp1.wiktel.com 0 6 0 - +0ns[ +0ns] +/- 0ns ^? 66.85.78.80 0 7 0 - +0ns[ +0ns] +/- 0ns
Expected results:
Servers can be different sh-4.4# chronyc sources MS Name/IP address Stratum Poll Reach LastRx Last sample =============================================================================== ^- clock.corp.redhat.com 2 8 377 2 -180us[ -180us] +/- 39ms ^- ntp2.ntp-001.prod.iad2.d> 2 8 377 2 -54us[ -54us] +/- 18ms ^- clock.corp.redhat.com 2 8 377 3 +41us[ +41us] +/- 54ms ^* 10.11.160.238 1 8 377 133 -272us[ -312us] +/- 1438us
Additional info:
