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什么是 cf_hwassist_missedKeepAlive 超时和容忍期?

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fas-systems
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hw
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适用于

  • NetApp AFF和FAS系统
  • ONTAP 9

问题解答

  • cf_hwassist_missedKeepAlive 事件在 60 秒后记录在 EMS 中,在发送 hw-assist 数据包
  • hw-assist 数据包每 180 秒由 UDP 发送一次:
    •  如果发送和未接收数据包,则不会重传数据包
    • 如果 UDP 数据包被丢弃、阻塞、楔入、重定向等,并且节点未收到,则节点将仅等待 180 秒,直到下一个数据包被发送
  • 因此,如果 cf_hwassist_recvKeepAlive 事件在 cf_hwassist_missedKeepAlive 之后 120 秒内显示,则可以安全地忽略

[Nodename-02: cf_hwassist: cf.hwassist.missedKeepAlive:debug]: HW-assisted takeover missing keep-alive messages from HA partner (Nodename-01).
[Nodename-02: cf_hwassist: cf.hwassist.recvKeepAlive:debug]: hw_assist: Received hw_assist KeepAlive alert from partner(Nodename-01).

追加信息

  • 对于cf_hwassist_missedKeepAlive的原因,由于 hw-assist 配置并在通过客户网络环境的 e0M 上使用 IP 和端口进行传输,因此几乎所有此类故障的实例都是由于网络丢包造成的。
  • 通过命令检查hwassist-health-check-interval

aff200-2n-dal-1::> storage failover show -fields hwassist,hwassist-partner-ip,hwassist-partner-port,hwassist-health-check-interval,hwassist-retry-count,hwassist-status
node      hwassist hwassist-partner-ip hwassist-partner-port hwassist-health-check-interval hwassist-retry-count hwassist-status
------------- -------- ------------------- --------------------- ------------------------------ -------------------- ---------------
aff200-dal-1a true    10.128.227.184    4444          180              2           active
aff200-dal-1b true    10.128.227.183    4444          180              2           active
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