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

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Get-Cluster cmdlet fails when using -Name param

Summary When I call Get-Cluster powershell returns the name of my cluster. For simplicity sake, lets call it Cluster1. If I call Get-Cluster -Name Cluster1 it fails with an error. Error: ...
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369 views

SQL Server 2008 R2 Failover Clusters behaviour on multiple failures

I'm testing the resilience of one of our test systems. We have 2 x DB (SQL 2008 R2 on Server 2008 R2, running in ESXi VMs) arranged in a Failover Cluster. Shutting down the Active SQL Server service ...
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36 views

Failing over to mirror instance when not using a witness server

I have a set up where I have two SQL servers set up for failover mirroring to two other SQL servers. I am not using a witness server. I had previously used a witness server and that of course would ...
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1answer
252 views

Setting up Windows Server Failover Clustering in SoftLayer

I'm trying to create a Windows Server Failover Cluster. I've already create Active Directory successfully. I'm currently at this stage: On the screenshot, the blurred place has subnet/network id, ...
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1answer
541 views

Windows cluster has lost or discarded the CLUSDB

Both nodes of a two node windows failover cluster on 2008R2 have lost the CLUSDB file. I think this happened because an inexperienced admin came to a cluster with a reserved disk issue and ...
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355 views

How to make Nginx fire 504 immediately if server is not available?

I have Nginx set up as a load balancer with cookie-based stickiness. The logic is: If the cookie is NOT there, use round-robbing to choose a server from cluster. If the cookie is there, go to the ...
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1answer
226 views

Remotely connecting to hyper-v hosts from another host in the same cluster sometimes shows red error

We have a hyper-v host cluster with relatively new hardware. The hosts and the VMs on them all work good, except when I connect to any hyper-v host from another host in the same cluster (remotely ...
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21 views

Windows Server 2012 R2 Hyper-V - High Availability (Clustering): Connect servers to storage using FC: switch or direct attach?

My scenario: I have a DS3400 DISK SYSTEM DUAL CONTROLLER FIBRE CHANNEL storage equipped with two controllers each equipped with two 4-GBPS FC ports, for a total of four FC ports. Then I have four ...
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378 views

Could not get domain controller name from machine

While validating a Failover Cluster over two member servers I get the following two errors: Connectivity to a writable domain controller from node SQL2.domain.com could not be determined because of ...
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49 views

Best Way to Restart 2 Node SQL Cluster To Perform Windows Updates?

So I have a 2 node MS SQL Server cluster, using AlwaysOn, on Windows 2012 r2. SQL1 is the primary. SQL2 is the secondary. I want to restart both servers today to perform windows updates which will ...
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1answer
113 views

Clustered SAN volumes not showing up in Windows Explorer

Occasionally my drives will not show in Windows Explorer even though they appear online (Reserved) and mapped to a drive letter in Disk Management. I'm not sure what makes them come back but right now ...
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33 views

Windows Failover Cluster - High Availability

I set up a Windows Failover Cluster on WS2012. Is there a way to replicate the cluster on another server to have a sort of high availability of the cluster itself? My concern is about the scenario ...
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1answer
96 views

snmp on rhel cluster : from virtual address to a node

I am currently trying to set a server/client configuration, and i'm struggling a little with snmp behaviour. Just to precise, i'm not really into linux administration, nor network administration, so ...
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548 views

Windows Server 2012 - Hyper-V - iSCSI SAN - All Hyper-V Guests stops responding and extensive disk read/write

We have a problem with one of our deployments of Windows Server 2012 Hyper-V with a 2 node cluster connected to a iSCSI SAN. Our Problem Our problem is that for some reason all of the VMs stops ...
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1k views

cisco asa reloading

After having both memory and code upgrades, we have a significant number of our asa 5520's (in active/standby pairs) develop problems. The problem manifests itself as losing connectivity to the other ...
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124 views

Can you run CAU on an Exchange 2010 DAG cluster?

I've searched for this and I expected it to be a common topic, but I can't find any information on it. Given that the Exchange DAG is built on top of WCF, will CAU properly handle updating a DAG ...
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74 views

SQL Failover Cluster IP Migration

I have a four node cluster setup which I need to migrate from subnet A to subnet B. The cluster has roughly 12 instances running on it. I've found articles to update the SQL Cluster IP, but I've got ...
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674 views

TeamCity (or Jenkins) with Cluster/Replicated servers

We use Team City 7 for Continuous Intergration. Sometimes I need to bring down the server for maintenance which stirs up complaints. Is anyone using a cluster for these types of servers where there ...
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572 views

Wierd Windows Clustering Issue

hoping someone could direct me to the right direction. I have a Windows 2k8 R2 file server cluster. Each of the two boxes resides on two HyperV hosts. Everything has been working smoothly for over a ...
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34 views

Hyper-V - Upgrading a 3 node 2008R2 cluster to 2012R2

I'm just after a some advice/tips on upgrading our 3 node Hyper-V cluster from 2008R2 to 2012R2. I have 3 x Dell r710s running Server 2008R2DC. These are clustered and running about 15 VMs (5 on each ...
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360 views

Install optional updates using Cluster-Aware Updating

The question is simple - how can I install updates listed as "optional" in Windows Update using the Cluster-Aware Updating feature in Windows Server Failover Cluster? I installed all the important ...
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60 views

Run generic Windows Service with affinity for the Primary Replica of an SQL Server AlwaysOn Availability Group

Is it possible to configure a generic Windows service in a Windows Server Failover Cluster such that the service always runs on the same machine as the Primary Replica (read/write) of an SQL Server ...
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179 views

How many MSDTC clustered services (if any) are needed for a multiple-instance SQL Server 2012 cluster?

I'm creating a new SQL Server 2012 cluster, running on 2 physical nodes (the O.S. is Windows Server 2012 R2); the cluster will host multiple SQL Server instances; the exact number is yet to be ...
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276 views

IP Resource Errors While Building a Windows Failover Cluster on Azure

I have setup a failover cluster in Microsoft Azure on four VMs. I have two nodes in one subnet/region, one node in another subnet/region and a final node in a third subnet/region. The cluster passed ...
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118 views

Got “page isn't redirecting properly” issue In mod_jk clustering

I have installed two jboss AS 7 servers on two different machines and i start these two by switching standalone-ha.xml configuration. Also i installed an apache httpd server in one of theses machine ...
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199 views

Getting the DB2 Resource online in Failover Cluster

I'm using DB2 10.1 Enterprise Server Edition on Windows Server 2012 R2 After adding the DB2 resource to the cluster using the db2wolfi command, I go to the resources tab which is in the cluster ...
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912 views

windows2012 failover cluster + storage. Considerations

We plan to build a failover storage with Windows2012r2. There will be 2 or 3 physical machines with 2 virtual machines on each server. One virtual machine building a failover, second one being storage ...
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49 views

Failover cluster wouldn't fail over

I have an active-passive failover cluster on 2008r2 with SQL server 2008 clustered on it. I go to fail it over for maintenance and the resource failed to come online on either node. Once I rebooted ...
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299 views

Unable to remote desktop using failover cluster name

I am using Microsoft Failover Cluster and I have 2 nodes - say node1 & node2. The nodes are successfully accessed by remote desktop. but the cluster name is not accessible. The cluster name is ...
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388 views

How do I configure a DCHP reservation for an IP Resource in a Windows 2008 R2 failover cluster?

Background My company has recently instituted a corporate policy that all servers are to have IP addresses that are issued via DHCP reservations to simplify the management of our IP scopes. We have ...
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846 views

How can I uninstall a clustered SQL instance if the cluster has been destroyed?

First time going through this scenario, and apparently I did it very wrong. On the DB servers I deleted the cluster group that held SQL and Reporting Services. I then destroyed the cluster. Then I ...
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291 views

Windows 2003 Cluster: Failover Delay

I am testing the failover policies of our test failover cluster system. When I shutdown the node who is currently controlling the cluster (NODE1), it takes about 2 mins and 40 seconds before the next ...
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14 views

Can't see fileshares in Windows Failover Cluster Interface

I am unable to see Fileshares I've added to my Windows Failover Cluster And I get this error But I can see them via powershell Get-SmbShare -ScopeName my_server_role | Select * I am a domain ...
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19 views

MS SQL - HA & load balancing best solution for servers at different geo-location

Customers has App server (MS Server 2012) and Storage server (MS SQL 2012), with several hundred clients accessing server app via VPN. Now they want to have a high-availability and also load ...
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37 views

Failover Cluster DFS issue

I have a Windows 2008 R2 Failover Cluster. I have a Windows 2012 R2 Failover Cluster. I have been able to use the Copy Cluster Role to migrate 70 VM’s and the DHCP service from the Windows 2008R2 ...
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28 views

What exactly is the “client” in Failover Cluster Manager in Hyper-V environment?

Recently, in my Hyper-V environment, we broke out the ip addresses used on the hosts into separate subnets, some of which are non-routable. Now I am seeing a "target name resolution" error in Server ...
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23 views

New SAN space presented cause issues with Win 2008r2 cluster (wont reboot and disk manger wont load)

I have an issue where I have a 2 node Win 2008 r2 cluster with SAN attached storage. Existing storage is on an older array but we are being migrated to a newer one. When the storage team "Zones" new ...
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33 views

Can Failover Clustering in WIndows be set-up on Google Compute?

My understanding is that a Windows Failover Cluster node must be multihomed and that GCE Instances cannot be multihomed. Is this the case, please?
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92 views

Windows Failover Cluster Generic Script

I have two windows server 2012 R2 machines set-up in a cluster. Everything seems fine with regular services but when I try to create a generic script resource I encounter the following vague error: ...
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98 views

Failover Forward IP Packets with port from one server to another

Basically none of the solutions online have worked so far. Here's my setup: To simplify things, we're gonna assume it's a VNC server, My setup is a fully integrated OwnCloud and Ulteo. I've ...
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331 views

2012 R2 Failover Cluster & Microsoft CSV Shadow Copy Provider

I am hoping that someone can help me out here. I have a 2 node 2012 R2 Hyper-V Failover Cluster, and I am trying to get our Veeam backups to work on this Cluster. On node 1 the backups work fine ...
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80 views

Failover Cluster 2008 R2 - unable to destroy

I had a single node test failover cluster. When destroying the cluster, the destroy command hung and stopped. The cluster still shows in the domain cluster list (cluster /list) and trying to remove it ...
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81 views

Windows Cluster An error was encountered while determining shared storage

Our SAN manager has added a new disk for our cluster. this is a new 6TB disk that will be used for backup and will be part of a file share. I have put the disk online, initialized it and assigned the ...
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36 views

new to Windows Server Failover Clustering

Need to test SQL Server's AlwaysOn Availability Groups feature. Seems I need to do some work on Windows Server to start with ("3-node WSFC cluster with the Node Majority quorum model"). But I've never ...
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0answers
59 views

MongoDB cluster network Resilience with 2 ethernet only

I wonder if it is possible to configure a network resilience mongodb cluster using only 2 ethernet adapter card on each node. I configured the cluster with 3 nic emulating the third nic using vip ...
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296 views

Windows 2-node failover cluster with AD setup

Is it possible to create a 2-node failover cluster with AD, but only with 2 physical servers? Creating a failover cluster requires an AD, but sadly I don't have any available hardware to install it. ...
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2k views

Windows Failover Cluster - Create Cluster Wizard: error occurred while creating the cluster

I have 2 identical Windows Server 2008 R2 servers which I am trying to setup a failover cluster on. The "Validate a Configuration" passes, but the actual creation process produces an error: An error ...
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218 views

SAN Storage Array in Hyper-V 2012R2 Failover Cluster - outdated file table info?

We have Dell MD3600f SAN storage array and two HP servers for VM failover clustering solution. MD3600f is set, disks are mapped and connected to Hyper-V servers. On Hyper-V's I have partitioned and ...
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1k views

Cluster Shared Volumes offlining under excessive use

I am trying to understand (and ideally fix) a particularly annoying phenomenon I've noticed with Failover Clustering and Cluster Shared Volumes in conjunction with Hyper-V. It appears that under high ...
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87 views

SQL failover cluster on single ESXi host

I'm setting up a virtual environment consisting of 10 VM's with 2 primary SQL databases required. The infrastructure allocates two pairs of SQL 2008 R2 Enterprise edition (VM's). The pairs are ...