Non ROOT Users Cannot Ping Compute Node Hostnames In Exalogic Linux Physical Releases (Doc ID 1540374.1)

Last updated on MARCH 05, 2023

Applies to:

Symptoms

In Exalogic racks running with Linux physical releases issue of non root users not able to ping hostsnames of the compute nodes is observed. Ping on IP addresses works using non root users.This issue of non root users unable to ping hostnames can happen either on EOIB or IPOIB hostname and in some cases both EOIB and IPOIB hostnames. With root user login we do not see this issue ping on hostnames works as expected.

For e.g. in below IP addresses using non root user ping on EOIB addresses “elxxcnxx.oracle.com”, “elxxcnxx”  and IPOIB addresses “elxxcnxx-priv.localdomain”, “elxxcnxx-priv” fails. Ping on EOIB and IPOIB IP address still works using non root user in this case, 10.254.XX.XX (EOIB) and 192.168.XX.XX (IPOIB). When using root user we do not see this issue, ping on both EOIB and IPOIB hostnames works.

Hosts & DNS configurations inside /etc/hosts, /etc/resolv.conf & /etc/nsswitch.conf looked good and did not have any misconfigurations.

Cause

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