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集群LIF IP的外部DNS反向查找过多

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16
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Category:
ontap-9
Specialty:
core<a>2009466281</a>
Last Updated:

适用场景

  • ONTAP 9
  • 收获
  • DNS

问题描述

  • 数据包跟踪显示 节点管理LIF生成的一系列PTR请求 、用于反向查找 集群LIF的IP (11.22.33.44):
    1 <node management IP> 50445     <DNS IP>               domain    DNS   Standard query 0xdf71 PTR 44.33.22.11.in-addr.arpa
    2 <DNS IP>             domain    <node management IP>    50445    DNS   Standard query response 0xdf71 No such name PTR 44.33.22.11.in-addr.arpa SOA localhost
  • 随着DNS风暴的发生、DNS服务器可能会停止回答集群Vserver中导致 dns.server.timed.out 错误的问题
    mgwd: dns.server.timed.out:error]: DNS server 111.111.111.11 did not respond to vserver = SVM within timeout interval. 
    mgwd: dns.server.timed.out:error]: DNS server 111.111.111.12 did not respond to vserver = SVM within timeout interval. 
  • 审核日志包含 /api/private/cli/network/connections/active  remote_host 请求字段的REST请求
    Wed Dec 06 2023 20:00:21 +09:00 [kern_audit:info:2412]xxx:: admin-vserver: http :: xx.xx.xx.xx:47068 :: admin-vserver:admin :: GET /api/private/cli/network/connections/active?return_records=true&fields=service,blocks_lb,lif_name,local_address,node,proto,remote_host,cid,local_port,lru, remote_ip,vserver :: Pending ・・・・・・ Wed Dec 06 2023 20:00:27 +09:00 [kern_audit:info:2412]xxx:: admin-vserver: http :: xx.xx.xx.xx:47068 :: admin-vserver:admin :: GET /api/private/cli/network/connections/active?return_records=true&fields=service,blocks_lb,lif_name,local_address,node,proto,remote_host,cid,local_port,lru, remote_ip,vserver :: Success:

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