Today, I had issue with one of the node cluster. After installing DPM agent on one of the nodes, the Server didn’t want to join to cluster. The error like this is not something to be happy about.

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2018-6-19  SQL Server 2012 Cluster Service pack 3 fail to failover node. Microsoft-Windows-Security-Kerberos Date. - Event ID: 1146 Task Category. Process stops unexpectedly when you start a cluster resource in Windows. An Event ID 1146 under these conditions. The Failover Clustering feature.

Cluster node ‘ServerName’ was removed from the active failover cluster membership.!

From cluster logs, I could see lot of event ID:1135

Cluster node ‘ServerName’ 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.

Tracking down systems logs from server itself i could see few other errors.

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EventID 1146; 1070; Sparkocam portable.

All in all, no usable information from these logs.

Troubleshooting

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To get correct information and logs, I used Get-Clusterlog Powershell command to generate log file for each member of cluster.

The one I used on healthy node is:

Get-Clusterlog -Timespan 5 -Destination Node1C$ClusterLogs

This way, you have initiate creating cluster logs for each cluster member in time period of 5 minutes and to collect data to same destination. In this period, you should try to start Cluster service from node that is causing the issue.

After command is completed, and you tried to start cluster service on node that is having the issue, you will end up with cluster log files.

I analyzed the the log file from node that is having issue. (as you can see, that log file is the largest in above picture.)

From logs provided by ClusterLogs, found out that one of NICs (iSCSI B2 in this case) is cousin this issue.

ERR mscs::GumAgent::ExecuteHandlerLocally: AlreadyExists(183)’ because of ‘already exists'(Node5 – iSCSI B2)
WARN [DM] Aborting group transaction 80:80:5843+1
ERR [CORE] Node 5: exception caught (183)’ because of ‘Gum handler completed as failed’
ERR Exception in the PostForm is fatal (status = 183)
WARN [RHS] Cluster service has terminated. Cluster.Service.Running.Event got signaled.

Resolution.

After I identified what could be the issue, I tried simple fix, renaming affected NIC adapter. (in this case iSCSI B2), and trying to start cluster service again.

After few seconds, the service was running and Node was again joined to cluster. Star wars battlefront 2 xbox rom.

After you confirm that cluster node is operating normally, you can stop the cluster service from failover managment console and rename NIC to be same as on rest of nodes.

Hope it will help someone.

Hi,

So first of all I'm quite new to Clustering and High Availability so I'm kinda stumped with this.

A client of ours is in the process of changing their LAN's IP addresses to a different subnet (they've been acquired by another company). They have a Cluster with 9 nodes and 100+ VMs in Hyper-V.

They need to leave some of the VMs' IP addresses unchanged, so they will have 2 subnets of VMs running on the same cluster.

So I guess my question is, how do we do this? Any particular steps that we need to take first before we change the VMs' IP addresses? Do we need to change the Host's IP address first?

We've actually tried to change just the VM's IP address but they just lost connectivity.

EDIT:

I've just read somewhere about adding an IP address resource for multi-subnet Clusters and then configuring it's Dependencies. Not sure if that has any relevance to my situation..

Please let me know if you need more info from me. As I've said, I'm new to this and don't really know where to start.

Any help will be greatly appreciated.

Thanks in advance.