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错误消息 "rsyslogd: omfwd: error 101 sending via udp:Network is unreachable"是什么意思？

Solution Unverified - Updated -

Issue

  • 为什么在 /var/log/messages 中观察到以下错误？

    rsyslogd: omfwd/udp: sendto() error: Network is unreachable [v8.2102.0-5.el8 try https://www.rsyslog.com/e/2354 ]
rsyslogd: omfwd: error 101 sending via udp: Network is unreachable [v8.2102.0-5.el8 try https://www.rsyslog.com/e/2354 ]

  • 为什么仅在重启服务器后才观察到此消息，然后其在 1-2 分钟内消失？但是，消息会如预期发送到远程服务器。

Environment

  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8

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