Windows Server Failover Clustering (WSFC) is the de facto standard high availability technology in Windows, where a group of servers (nodes) works together to increase the availability and scalability of clustered resources. In case of failure of individual resources or one or more nodes, failed resources are automatically restarted on the remaining nodes. In order to ensure always a majority when assessing which nodes should control the cluster, an odd number of hosts is needed or alternatively a file server (deployed with the Windows File Server charm) can be added in a “witness” role.
The Failover Clustering charm requires a relationship with the Active Directory charm and manages automatically the cluster membership when the number of nodes increases, allowing an amazingly scalable solution. The Failover Clustering charm is used in conjunction with other charms, for example in the SQL Server AlwaysOn use case.
juju deploy wsfc
How to connect to a Windows Active Directory:
juju add-relation wsfc active-directory
juju add-relation wsfc smb
A Windows machine can belong to only one cluster.
The smb relation provides a witness share, which will be used for a node and share majority quorum.
How to add another unit:
juju add-unit wsfc
How to remove an existing unit:
|A static address to use for this cluster
|The name for your fail-over cluster
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