Questions tagged [failovercluster]

A failover cluster is a group of servers that work together to maintain high availability of applications and services

A failover cluster is a group of independent computers that work together to increase the availability and scalability of clustered roles
The clustered servers (called nodes) are connected by physical cables and by software. If one or more of the cluster nodes fail, other nodes begin to provide service (a process known as failover). In addition, the clustered roles are proactively monitored to verify that they are working properly. If they are not working, they are restarted or moved to another node.

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Can Volume Shadow Copy Service (VSS) expose a volume to a Failover Cluster disk?

I am running a Windows Server 2012 R2 failover cluster environment for development, to mirror our production cluster, and I have VSS able to expose to a drive, mount point or share local to the Cluster Node, but I cannot seem to be able to expose to…
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pacemaker - what's wrong with ipsrcaddr?

I want to implement "floating" IP between two nodes using pcs+corosync+pacemaker. I've read dozens of howtos and ClusterLabs documentation, but it seems I've done something wrong. Help me please. I want a following thing - floating IP and its route…
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Stretch Cluster File Server with Storage Replica - Partnership not reversing on failure simulation

First off, sorry if this is the wrong place to post this. I have a Storage Replica setup running in a MSCS Stretch Cluster configuration, two sets of two VMs with each set running on a separate ESXi host, acting as a File Server. Each set has two…
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What is the bottleneck of my HP MSA? Is it intended for a CSV at all?

I am an apprentice at a company in Switzerland. We have a testing / learning environment for us, which consists of multiple physical servers. There are two physical Microsoft Hyper-V servers that are in one Failover Cluster, connected via iSCSI to a…
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How to set SQL-Always-On in Kubernetes Linux container?

I raised 3 pods of SQL servers in Kubernetes: 1 as a primary DB 2 others as Secondary DBs I want to set SQL-Always-On feature between those 3 DBs in a way that: In SSMS the 3 DBs will be "Synchronized" In SSMS I want to be able to click…
Hiddai
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Validate Switch Enabled Teaming Configurations Cluster Validation Failure

Setting up failover Clusters using windows Server 2022. Both nodes are server 2022 fully patched. Both nodes are running on VMware ESXI/vSphere Validate Switch Enabled Teaming Configurations Description: Validate that Switch Enabled Teaming…
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Pacemaker/Corosync: how to emergency-shutdown all resources (VMs qemu/kvm)

Good morning everyone - Running a 6 node Pacemaker/Corosync cluster with lots of productive qemu/kvm VMs on it, we were wondering how to best do an "emergency shutdown" of the whole lot, ie. when the UPS signals "AC fail" and "low battery". After…
Christian
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I need to replace servers in windows 2016 cluster. Can I add the 2019 servers to the cluster and remove the old ones?

As the subject says, I need to replace servers in a Windows 2016 cluster that uses an iSCSI SAN as shared storage. Can I just add the new servers to the cluster, after installing the iSCSI drivers, drain all of the roles to the new servers then…
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minimise tcp/ip timeout with haproxy failover

I have a 3 node cluster setup with haproxy/apache/nginx/php/galeramariadb. I am searching a way to minimise my tcp/ip timeout between cluster failover. Currently my domain hosted on this 3node cluster has an A record with 3 ip addresses. If i loose…
Scool
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Orphaned Domain in Windows Forest - Unable to Connect to Cluster in Hyper-V Failover Cluster Manager

Have a question here that pertains to an orphaned domain, specifically trying to connect to a Hyper-V cluster in Failover Cluster Manager. We have a Windows forest with a root domain of domain.tld. Inside the forest there are 4 domains,…
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Bring Windows Failover Cluster On-Line with only One Node

I would like to set a policy such that my Failover Cluster will always come into service, even if only one (of the two nodes) is available. Background: I have only two nodes in the cluster, plus a witness quorum in a share on the DC. For this…
Gregor
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Error adding a new node to Windows Failover Cluster Service - Parameter is incorrect

We are trying to add new nodes to an existing Windows Failover Cluster (WFCS). When we run the Add Node wizard in Failover Cluster Manager, or run the Add-ClusterNode in PowerShell, we get the same cryptic error "The parameter is incorrect". No…
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Failed to map guest I/O buffer for write access with status 0xC0000044 Hyper-V-StorageVSP Event ID 8

Full Error information: Error 8/9/2021 10:35:11 AM Hyper-V-StorageVSP 8 None Failed to map guest I/O buffer for write access with status 0xC0000044. Device name = d:\vms\servername\virtual hard disks\servername.vhdx This error is switching…
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Cannot Implement Failover Clustering Windows Server 2019

I am learning how to implement a failover cluster. I have 3VMs running Windows Server 2019 Standard Edition on all the VMs and it is not activated. I installed failover cluster feature on all the VMs. When I open the Failover Cluster Manager and…
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Cluster network name blank in SQL cluster node configuration (setup exit with “Error code 0x84C00001”)

I created 2 nodes fail over Microsoft cluster Windows 2016. On the node 1 an SQL 2014 server clustered has been installed, the new role is working and is online in the cluster management console. Now i should add the node 2 to the the SQL Server…