GemFire: File not found or not readable
Article ID: 435605
Updated On:
Products
Issue/Introduction
User sees below warnings:
[warn 2026/03/03 01:59:24.237 <timezone> <StatSampler> tid=##] File not found or not readable: /proc/net/snmp6
Environment
Any GemFire runs on Linux system with statistics enabled.
Cause
It is due do the OS does not have IPv6 enabled and lack of IPv6 related files under /proc/net/snmp6. Any time sampler runs to collect stats, will scan all such files and if the file does not exist GemFire will log the warning once. So the line will appear log every second or so, depending on the sampling rate.
Resolution
Users can use below command to verify if IPv6 is disabled: `sysctl net.ipv6.conf.all.disable_ipv6`.
It is harmless, can safely ignore. But if anytime think it is being noise in the log, for now, it is recommended to enable IPv6 as a workaround.
Also, R&D has improvement plan already which makes GemFire only prints the warning couple of times only after verifying if the file does exist. But no ETA yet.
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