The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.

这个告警信息是指TCP backlog设置为511，但无法被强制执行，因为/proc/sys/net/core/somaxconn的值被设定为较低的128。这个告警信息说明了系统中的一个配置问题，导致TCP backlog的设置无法生效。TCP backlog是指内核在处理传入连接请求时所能够排队等待的最大连接数。在这个情况下，由于/proc/sys/net/core/somaxconn的值被设定为128，低于511，所以无法实现期望的设置。要解决这个问题，需要修改/proc/sys/net/core/somaxconn的值为大于等于511的数值，以使TCP backlog的设置生效。之后，系统将能够处理更多的传入连接请求。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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