I'm having a mysterious problem with my Failover cluster,
Cluster name: SQLCluster01.domain.com
Members: SQLServer01.domain.com andSQLServer02.domain.com
in the Failover Cluster Management – Cluster Event I received the Critical error message 1135 and 1177:
Log Name: System
Source: Microsoft-Windows-Failover
Date: 15/06/2014 9:07:49 PM
Event ID: 1177
Task Category: None
Level: Critical
Keywords:
User: SYSTEM
Computer: SQLServer01.domain.com
Description:
The Cluster service is shutting down because quorum was lost. This could be due to the loss of network connectivity between some or all nodes in the cluster,
or a failover of the witness disk.
Run the Validate a Configuration wizard to check your network configuration. If the condition persists, check for hardware or software errors related to
the network adapter. Also check for failures in any other network components to which the node is connected such as hubs, switches, or bridges.
Log Name: System
Source: Microsoft-Windows-Failover
Date: 15/06/2014 9:07:28 PM
Event ID: 1135
Task Category: None
Level: Critical
Keywords:
User: SYSTEM
Computer: SQLServer01.domain.com
Description:
Cluster node 'SQLServer02' was removed from the active failover cluster membership. The Cluster service on this node may have stopped. This could also be
due to the node having lost communication with other active nodes in the failover cluster. Run the Validate a Configuration wizard to check your network configuration. If the condition persists, check for hardware or software errors related to the network
adapters on this node. Also check for failures in any other network components to which the node is connected such as hubs, switches, or bridges.
After further investigation, I found some interesting error here, from the very first critical error message logged in the Event viewer on SQLServer02:
Log Name: System
Source: Tcpip
Date: 15/06/2014 9:07:29 PM
Event ID: 4199
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: SQLServer02-VM.domain.com
Description:
The system detected an address conflict for IP address 192.168.127.142 with the system having network hardware address 00-50-56-AE-29-23. Network operations
on this system may be disrupted as a result.
And I have double check in all of the cluster members that all IP addresses is now unique.
Already done the validation test for networking in Failover Cluster Manager Console,
Every Parameter in Success. No errors
or warning found.
Any help would be greatly appreciated.