Cisco Bug: CSCvt70976 - JIRA Bug: MAGLEV-10849 -- DNA Center-Enhance ETCD server DNS lookup behavior in Cisco Umbrella envir
Aug 07, 2020
- Cisco DNA Center
Known Affected Releases
Symptom: DNAC install failure. This bug is to enhance the ETCD lookup when kube-dns is not available. During the issue, below output show umbrella block page(X.X.X.X) is presented to DNAC instead of 127.0.0.1 which causes ETCD to break. $ netstat -tnlp | grep 2379 (No info could be read for "-p": geteuid()=1234 but you should be root.) tcp 0 0 X.X.X.X:2379 0.0.0.0:* LISTEN <<<<<<<<<<<<< umbrella block page tcp 0 0 192.168.46.1:2379 0.0.0.0:* LISTEN - $ nslookup localhost Server: Y.Y.Y.Y Address: Y.Y.Y.Y#53 Non-authoritative answer: Name: localhost.default.svc.cluster.local Address: X.X.X.X <<<<<<<<<<<<<umbrella block page Conditions: Cisco Umbrella environment.
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