AppFabric service crashes

Question

I have a system that makes use of Windows server AppFabric Cache. Sometimes, the cache service crashes, and the cache cluster goes down. I see the below error in the event viewer:

AppFabric Caching service crashed.{Lease with external store expired: Microsoft.Fabric.Federation.ExternalRingStateStoreException: Lease already expired
   at Microsoft.Fabric.Data.ExternalStoreAuthority.UpdateNode(NodeInfo nodeInfo, TimeSpan timeout)
   at Microsoft.Fabric.Federation.SiteNode.PerformExternalRingStateStoreOperations(Boolean& canFormRing, Boolean isInsert, Boolean isJoining)}

Could someone please help to fix this issue?

Answer 1

Hello Rajesh,

Can you please tell us what is your cluster configuration - which version of AppFabric, how many nodes in the cluster, OS, how are you starting the cluster (either individual nodes using start-cachehost or starting the entire cluster using start-cachecluster), which configuration XML/SQL is used as configstore?

Do you observe this in the start-up or when the cluster is running, if its when the cluster is running what is the CPU utilization of the node?

Thanks

Answer 2

Hi Ranganath,

Thanks for your reply. Please find the details below:

1. There is only one node.

2. The version is 1.0

3. OS is Windows Server Standard 2008 64 bit.

4. I start the cluster using start-cachecluster

5. Config store is SQL Server.

6. I observe this when the cluster is running, CPU utilization was normal all the time (I havent seen anything unusual).

Thanks.

Answer 3

Is the SQL Server down at the time when the crash happened?

The exception says that there is a lease expiry with external store, which means the cache node is unable to contact the SQL server for some reason.