We have SQL (SQL2017+CU11) Always on setup with one primary and another secondary replica. Suddenly we started facing issue where SQL AG listener connection started fluctuating between primary and secondary. There are no error logs on SQL and System events. Also we have setup the AG on a single subnet.
Below are the parameters configured for listener.
PS C:\Windows\system32> Get-ClusterResource -Name "SQLListenerName" | Get-ClusterParameterObject Name Value Type
------ ---- ----- ----
SQLListenerName Name SQLListenerName String
SQLListenerName DnsName SQLListenerName String
SQLListenerName Aliases String
SQLListenerName RemapPipeNames 1 UInt32
SQLListenerName HostRecordTTL 1200 UInt32
SQLListenerName RegisterAllProvidersIP 0 UInt32
SQLListenerName PublishPTRRecords 0 UInt32
SQLListenerName ResourceData {1, 0, 0, 0...} ByteArra
SQLListenerName StatusNetBIOS 0 UInt32
SQLListenerName StatusDNS 0 UInt32
SQLListenerName StatusKerberos 0 UInt32
SQLListenerName CreatingDC **************************** String
SQLListenerName LastDNSUpdateTime 12/24/2018 12:37:25 PM DateTime
SQLListenerName ObjectGUID bc4f9a7d55af7647adc94126760.. String
SQLListenerName DnsSuffix ************************** String
SQLListenerName ADAware 1 UInt32
Please someone help here to fix this issue.
