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Questions tagged [failovercluster]

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

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Quorum disk size for Windows Server 2019 failover cluster

I'm setting up a Windows Server 2019 failover cluster, and I've seen advice to put the cluster quorum on its own LUN. How much disk space should I dedicate to it? It does not appear to take much ...
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56 views

How to Reboot a Server in a Failover Cluster

We have a failover cluster manager managing 4 node(host) servers. How would I go about rebooting one of the nodes in the failover cluster.
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16 views

Set up MS cluster 2016 with multi forest domain

i am trying to set up a two node MS cluster 2016 with cross forest. currently i am having two separate domains and having trust between domains. like a.com and b.com domains and trust enabled between ...
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2answers
53 views

Better way to get Microsoft Failover Cluster IP address resource through PowerShell

Is there a better way to view the IP address assigned to cluster IP address resource through PowerShell? Today, I use Get-ClusterResource, but I have to populate the cluster IP address resource name ...
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27 views

Windows failover cluster from another domain

So I am having an issue creating a failover cluster for 2 HyperV nodes. The 2 nodes have been joined to a domin of their own called hvtest.local. The PC I am tring to create the cluster from is on a ...
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1answer
126 views

How to setup IIS on Failover Cluster with Shared Data

I'm trying to setup a highly available IIS for public facing websites, and I'm having a hard time finding information on the best and most secure method of setting up the permissions, correctly ...
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28 views

Recommended ratio of Redis masters to slaves

When using Redis clustering, is there a recommended ratio of Redis masters to slaves? Is it recommended to have four masters with one slave each, or two masters with three slaves each? I'm uncertain ...
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1answer
17 views

Failover Hyper-V 2012 R2 with CSVs backup

We have a VMM-managed set of Hyper-V 2012 R2 clusters. Virtual machines are backed up with TSM, but currently there is no in-place backup for clusters themselves. I can't find (obviously I have ...
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111 views

Hyper-V Cluster Resource Hosting Subsystem (RHS) Questions

I have responsibility for multiple large-ish Hyper-V failover clusters. I very occasionally see an issue where the 'ISALIVE:0' check will fail for a virtual machine (via the vmclusres.dll library) and ...
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32 views

Windows Server 2016 (Backup - opinion)

I'm looking for a simple answer. I have a server here that's identical to our primary server. I want to make this server our backup server. Can someone point me to a resource or mention the ...
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27 views

Where to put the witness disk in Windows Failover Cluster?

I have built a Windows Failover Cluster but I am really confused about in which network should the Witness reside? In my current configuration the Witness is in the Heartbeat network.
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50 views

Why is it not possible for a DFS domain namespace server to work with shared storage?

I wondered why a stand-alone namespace "Can be hosted by a failover cluster to increase the availability of the namespace." while a domain namespace "[...] cannot be a clustered resource in a failover ...
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57 views

drbd Failed on on primary, secondary, it is blocked

I'm trying to settup a cluster with apache(to host jenkins service), IPaddr2, drbd. The process run flawlessly until I add drbd resource to pacemaker, crm status told me that drbd FAILED on both ...
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1answer
105 views

What may increase the latency 3-4 times for SQL FCI the database?

We have SQL Server Basic Availability Groups (BAG) configured to run an SQL database running over local Intel SSD drive. I was asked to move a database to SQL Server Failover Cluster Instance (FCI) to ...
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1answer
104 views

Failover Cluster validation test failed

Greetings fellow admins, I'm trying to set up a SQL server failover cluster with 2 Windows Server 2016 servers on a VMware vSphere host. When validating the Cluster I got the following error: List ...
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1answer
454 views

Redis: read-only slave vs fail-over slave?

I'm reading a lot of documentation around Redis network configurations, and I'm confused about how it seems the requirements in the architecture mental model I had, don't seem to map with the current ...
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2answers
978 views

Why can't I make a failover cluster using iSCSI for shared storage?

I’m trying to build a 2-node failover cluster (sqlnode-1, sqlnode-02) using Server 2016 guest VMs in my Hyper-V-based lab. The problem I have is that the cluster wizard doesn’t recognise my shared ...
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51 views

How to upgrade a generic application running on a windows failover cluster

I want to utilize windows failover cluster generic application role for my application. and I'm trying to figure out how to perform the upgrades. I've read there is an option to perform a "cluster-...
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3answers
28 views

Microsoft Failover Cluster Manager console missing

Failover cluster feature is already installed in this 2 nodes cluster since many months everything was working fine since yesterday. However, I don't see the Failover Cluster Manager console anywhere, ...
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1answer
169 views

Error 1195 on Windows 2012 R2 Failover Cluster with details -1

I am unable to make error 1195 go away on my Failover Cluster. The cluster is attempting to update the DNS entry for cluster name IP on the DNS server and failing with unknown error, (-1) but Event ...
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41 views

Expired DC certificate back after reboot

In our environment we use DC-Cluster_CA to generate SSL certificates for .foo-bar.local domains for internal use. Example is certificate 'DC-01.foo-bar.local' The Radius server also uses this ...
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1answer
32 views

windows 2016 failover cluster

Windows 2016 Failover Cluster with two nodes, both nodes have subnet A and B physical interfaces, and a generic service defined with client access point on both subnet A and B. Can I fail over from ...
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268 views

Unable to add Disk or FileShare Quorum Witness to Mirrored Storage Spaces Direct Cluster

So as the title states I am unable to add a Quorum Witness to my cluster with the two options that do not involve azure. I've tried several different commands for the disk witness as you can see it ...
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715 views

windows 2016 preventing Live Migration

We have 2 Nodes in our cluster network and all hardwares have same specifications. While am doing Live Migration am getting below error. **Live migration of 'Virtual Machine TEST_SERVER_1' failed. ...
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0answers
130 views

VirtualBox Failover Cluster with iSCSI

I have created 2 identical virtual machines running Windows Server 2008 r2 with the intention of creating a failover cluster environment. I attached an iSCSI device as hard disk to both nodes, but ...
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1answer
184 views

Adding ubuntu iscsi disk to windows failover cluster

I did this previously with a server on ubuntu 16.04 and targetcli. It worked and is still online today. I'm in need of more storage so I decided to make another machine with ubuntu 18.04 and targetcli-...
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256 views

Failover Cluster Manager - How to make a cluster vote again

I disabled one of the failover cluster firewall rules to test something on a node and it took the node down, re-enabling the firewall rule, brought it back online. But now the current vote says 0. How ...
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103 views

pacemaker not monitoring the service although giving op monitor interval=10s while creating resource

Following is the service scripts which runs custom script. [root@xxxxxxxxxxvmrf0001vbisalah001 ~]# cat /etc/systemd/system/drbdRes_rhcdDaemon.service [Unit] Description=Manage drbdRes cluster ...
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2answers
5k views

vSphere 6.5 HA agent cannot be correctly installed or configured

Last week we encounter the following issue : we had to shutdown our entire infrastructure due to UPS replacement. At the end of electrical operations we had restarted : network SANs vCenter ESXis (2 ...
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2answers
141 views

High Availability on DAS HPE

Anyone who can assist me? I currently have a DL360 Gen9 HPE server Directly attached to HPE MSA 2040 device (DAS). I now need to ensure HA on the server level, is it possible to have FO cluster (...
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1answer
650 views

Cluster Shared Volume Owner Node After reboot

Problem: In a failover-cluster (Hyper-v) the CSV (iSCSI) gets "pulled" to the node that just restarted (after updates) when i don't want it to. I can not find any setting defining CSV owner ...
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0answers
48 views

(Windows Server 2012 R2) Is it possible to split a failover cluster into 2 new clusters by expanding and splitting the existing cluster?

Say you have an existing application cluster using Windows Failover Clustering - something perhaps like this: Roles: File Share Services RavenDB ClusterDisk Service ServerName (ravendb.mydomain) ...
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141 views

Server 2016 WSFC Adding an evicted node back to the cluster

Have a 4 node cluster running on WS2016. Evicted a node in an attempt to troubleshoot and now i can not add it back to the cluster. Here is the error im getting: add-ClusterNode : An error occurred ...
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3answers
337 views

Cluster Fails when Enabling Storage Spaces Direct Server 2016

I'm trying to get a 2 Node Hyper-converged Fail-over cluster setup with 2016 Server and Storage Spaces Direct. I am able to Validate (with no errors) and Create the Cluster with the S2D tests ...
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1answer
540 views

How get get Failover cluster volume information using powershell?

The screenshot below is Win2012R2 Failover Cluster Volume. Those volumes are mapped from SAN through FC connection. I am trying to get this volume information as shown in screenshot by using ...
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2answers
529 views

Mirroring 2 Host with their own local storage

I'm trying to decide between 2 infrastructures. 1. 2 Servers host that point to a NAS 2. 2 Servers that mirror each other with their own local storage. Infrastructure Requirements: 50 TB of storage,...
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1answer
157 views

Creating a new Infrastructure for my company using Windows Server and FreeNas

I was hired to create software but now also stuck with governing all of the IT work. The company uses a Windows 10 Home machine as a file server for 13 users. I need to plan for up to 50 employees. ...
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Using AlwasyOn Failover Cluster Instance in conjunction of Peer to Peer Transactional Replicaiton

We are deploying two physical sites each with writable/readable access to its local SQL server. Each site has site redundancy and also cross site synchronization is required. My thought is to use the ...
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271 views

Can you use peacemaker with keepalived as communication layer?

I'm new to HA topic and I'm trying to get some bigger picture here. I have 2 hosts that run few services - mostly nginx and NFS for other servers. My primary goal was to make nginx redundant. As I ...
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1answer
427 views

How to securely encrypt Hyper-V VMs in Failover Cluster

Having TPM 1.2 installed on 2x Dell x730, what options to encrypt user and network data in Failover Cluster? I see Windows Server 2016 allows to passthrough the TPM to the VM. https://charbelnemnom....
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2answers
2k views

S2D warning: No disks found to be used for cache

I have a Storage Cluster consisting of 2 Windows Server 2016 Datacenter configured with a storage pool with 3 virtual disks consisting of the following physical disk. MediaType : HDD FriendlyName ...
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1answer
453 views

server 2016 active directory and hyper-v same server

I am getting ready to move my production environment from server 2012 R2 to server 2016 I want to do a clean install and in doing some inventory really only have two server I can use for staging, I ...
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1answer
50 views

Multihomed Computers - wont communicate on a network

I have two multi-homed servers connected to each other via a private network and also via a public network. I cannot get traffic to go across the private network. The servers only use the public ...
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1answer
173 views

Internal storage as HA failover cluster storage pool ?

I have 2 HyperV server (2012 R2) nodes with shared ISCSI storage (ubuntu 16.04) in a Failover Cluster. I want to make that 3 servers (windows server 2016 and/or 2012r2) each with 2 partitions, one ...
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0answers
711 views

Disks offline after reboot

Using Esxi 5.5, I created a 3 node windows failover cluster in Windows Server 2016 in order to run SQL Server 2016 Always On High Availability. Each node of the cluster has 3 disks (O/S, Data and Logs)...
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2answers
2k views

Azure Windows 2016 Failover cluster

I would like to setuo a generic service on a windows 2016 failover cluster but can see there are some issues with shared storage,additional network cards and ip addresses on Azure, is it supported on ...
4
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1answer
257 views

Mapping SAN to cluster nodes

I have mapped a block of space from SAN to 3 cluster nodes (2012r2)as below: 2 ports from each node have been mapped to the same share on SAN for redundancy. MPIO has been configured on all nodes SAN ...
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1answer
44 views

Can add only one windows machine to failover cluster, both are joined to same AD domain

I want to setup a failover cluster with 2 Windows EC2 instances, for which I'm following this link. One of the pre-reqs listed says that, Make sure that all servers that you want to add as cluster ...
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0answers
103 views

Solaris Clusters - cluster: (C383355) No response from daemon on node

I followed the instructions here to setup 2 node solaris cluster At the end of everything I noticed that one of the node's status is "offline" I also see the following message from "# cluster status"...
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2answers
50 views

What software/hardware to use to implement STONITH so that machine A can cut the power of machine B?

I'm trying to enforce split-brain protection when machine B takes over on a failover scenario. Basically I want to enforce that machine A is really out before machine B is activated, avoiding the ...