A cluster consists of a group of computers connected so that in many respects they can be viewed as a single system.

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9 node percona xtradb cluster

We are looking to launch a 9 node percona xtradb cluster on Amazon where each ec2 node uses 20k iops disks. I was afraid if a 9 node cluster will work and mostly what I see is 3 node clusters. We ...
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2answers
2k views

Is MSDTC required for SQL Server 2012 Fail Over Cluster?

I am making a 2 node SQL Server 2012 Fail Over Cluster, do I need to install MSDTC also? If yes then can both be installed on single shared disk?
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2answers
935 views

Executing Powershell SMO against a cluster with elevated privileges to update service accounts

I'm working on a Powershell script to update service accounts on named SQL instances in a failover cluster. I'm trying to use the SMO and WMI to update this so that I can update the service account ...
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1answer
1k views

Migrating Sql Cluster Installation To New Drive

We are migrating from an old SAN to a new SAN and need to migrate our SQL Server instance to new LUNs. We are able to migrate the data without any problem, but the SQL Server instance itself is ...
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2answers
47 views

Remove a node from Failover Cluster

We had 5 SQL Server 2012 servers configured with AlwaysOn. A few days ago we dismissed 2 of them, we removed them from the availability group and then stopped SQL services. We need to reuse these ...
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1answer
39 views

Keeping service up while taking drive offline in clustered instance

I have clustered instance with two (2) data drives on it. Drive J has around 50 databases on it and drive K has about 15. One of the system administrators was trying to increase the size on K by 20 GB ...
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0answers
371 views

SQL Server 2008 R2 Cluster Service pack 3 fail to failover node

I have a SQL Server R2 cluster on Windows 2008 R2 boxes, and today i was to install SP3. I installed it without any errors and rebooted the passive node. When i then try to failover to the passive ...
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1answer
196 views

delete WSFC 2012 cluster role/group fails

PS C:\Windows\system32> get-cluster Name ---- sql2012poc_cl1 PS C:\Windows\system32> get-clustergroup Name OwnerNode State ...
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4answers
17k views

Clustering vs. transactional replication vs. availability groups

Assuming you need to make sure your application that relies on SQL Server 2012 as its database backend is available around the clock, even if one server machine fails. As a developer and not a DBA, I ...
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1answer
297 views

Risk in evicting node from SQL Server cluster without prior uninstalling of SQL Server binaries

I have to perform upgrade of a SQL Server failover cluster with several SQL Server 2005 instances running on two Windows Server 2003. Since the plan is to have servers running Windows Server 2008 and ...
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1answer
54 views

Difference installing SQL Server 2014 on stand alone vs. VM Cluster [closed]

I have installed SQL Server many times on standalone servers with DASD and SAN storage allocated to it. We have a new Hyper-V Virtual machine Cluster set up for us by a third party IT shop. I am ...
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0answers
22 views

MariaDB Galera Cluster Replication

Does the replication between an async slave connected to a master withing the cluster affect the performance of the master in the cluster?
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2answers
1k views

How to allow connections to SQL Server with 2 differents ip

I have a small issue here: I have a SQL Server instance 2012 (let's call it SQLINSTANCE) on a cluster. I also have 2 network interfaces for this instance: - SQLINSTANCE.my.network - ...
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1answer
53 views

Multi Subnet Availability Group IP Requirement for Windows Failover Cluster

Does the Windows Failover Cluster for a multi-subnet SQL Server Availability Group require a static IP entry for each subnet? The instructions I am finding for a Failover Cluster Instance (FCI) in a ...
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1answer
169 views

Single node SQL Server 2014 cluster at DR environment

We are setting up a new Disaster Recovery environment. On Production we have SQL Server cluster with two nodes. For DR we decided that one node should be enough. The plan is to add the second node ...
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1answer
13 views

Adding more space + bandwidth to a MongoDB cluster

I've read a lot about sharding and have gone through cluster setup process as well. What I can't get my head around is the actual database capacity after its sharded. So say for instance I have one ...
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1answer
252 views

MariaDB Galera Cluster without HAProxy, MYSQL Proxy, etc

I'm looking to deploy a MariaDB galera cluster across three servers. However, I've noticed that the documentation often references HAProxy or the like. Does this not cause a single point of failure ...
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0answers
42 views

SQL Server 2008 R2 service pack steps …on cluster

I have a sp3 to apply on SQL Server 2008 R2 on windows 2008 R2 cluster with four nodes and 6 instances. Node 4 do not have any resources but is possible owner for all the instances. Steps I am ...
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1answer
2k views

SQL Cluster Resources Disappear After Removing Disk Resource

In the process of removing an usused disk resource from cluster, I would follow these steps: 1) remove dependencies on the disks by the SQL Server resource, 2) take the disk resource offline, 3) ...
3
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1answer
45 views

Can SQL Server 2012 FCI have multiple names?

Is it possible to have multiple names for the same SQL Server Failover Cluster Instance (virtual server)? IT has a naming convention they like, but it hard codes the Windows cluster name into the SQL ...
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0answers
23 views

Problems with MariaDB - won't resync nodes - Can we build a good diagnostic set of instructions?

I have a 3 node ubuntu server MariaDB cluster using rsync, which keeps coming un-synced. When it happens I try to add it back in, reboot, and try again, try again with bootstrap... Recently I've found ...
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0answers
19 views

myisam tables not synchronize

I have cluster database mariadb. In 3 nodes I have a table, count 22960 myisam table. In one one that table count change. now 22410 .. myisam table. I see It is not synchronize. why? what should I do? ...
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0answers
34 views

Error adding Database to TSA Cluster - db2haicu

I'm testing TSA Clustering using two test servers. It's replicating our production environment. I'm using two nodes shared disk topology. When running db2haicu, I am getting the following error in ...
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0answers
32 views

mariadb error transaction deadlock

I use galera cluster with 4 nodes, mariadb, we insert nearly 12million data. Insert task was finished. However we have lost 11000 data. I don't know where they go. In error log it writes; 151220 ...
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0answers
36 views

PostgreSQL on Cluster

question - I'm working on a project that involves heavy computation and will continually grow in terms of the database it works with. I want to build a small cluster (NUCs I'm thinking) the run a ...
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1answer
34 views

SQL Server FCI online with incorrect file path

I just encountered this strange issue with my SQL FCI yesterday. Windows 2008 R2 and SQL 2012 - 2 nodes FCI SQL server/ SQL agent resources are online and working as normal, but the system databases ...
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1answer
175 views

SQL Server failover cluster installation fails on primary node

I'm trying to install SQL Server 2014 fail-over cluster, but the installation fails with following log i have tried a lot of things but without any success.. The installation failed with following ...
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0answers
24 views

Is is possible to convert SQL Server from single instance to failover clustered node?

If SQL Server 2014 Enterprise has already been installed, can it still be converted/added to a failover cluster? Specific scenario - Amazon EC2 instance of Windows 2012 + SQL Server 2014 (license ...
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1answer
41 views

Change port number for SQL 2012 Cluster

I have been trying to change the port number of a SQL 2012 cluster with little success. I had thought that I could just do this the same way as normal through configuration manager however, even with ...
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2answers
9k views

I cannot get SQL Server 2012 to install the database engine

SQL Server 2012 installation on a standard Windows 2008 R2 server. It refuses to install the database engine or sql replication. During the installation I got no errors saying that it wasn't ...
2
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1answer
49 views

Is it possible to have a SQL Server cluster with Hadoop?

I know how Hadoop works. Is there any possible way to have SQL Server run under Hadoop to build a cluster based on SQL Server and not Drill or Hive. Just a wild question. Any good ...
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0answers
10 views

Galera 3 node cluster - force an online state transfer without downtime on existing node

We have 3 node Galera cluster. On node 3 I wish to force a state transfer. We have out of sync issues, because table was MyISAM. Now InnoDB. Howto do that? Delete data files and restart? The cluster ...
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0answers
35 views

SQL Server Installation in a 2 node cluster

I'm installing SQL Server 2014 in a cluster for the first time, and am running into an issue. Environment: x2 Windows Server 2008 R2 - with a load balancer in front Steps so far: Have the IP's ...
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1answer
62 views

Log shipping 2008 r2 SP2 server to a 2008 r2 SP3 CLUSTER

We have recently configured one database to be replicated with log shipping in production, using SQL Server 2008 R2. We have up and running more than 150 database replicas without any problems. But ...
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1answer
55 views

unable to connect to specific instance ORacle RAC

I did several operations by connecting successfully to all 4 instances but suddenly during one of the jobs, it failed with a TNS error. I checked the connect from SQL and one of the nodes is giving an ...
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2answers
74 views

Would SQL Server in a Cluster failover if it is running out of RAM

I have a SQL Server 2008 R2 in a Cluster in an active-passive mode. The server is running out of RAM (both physical and pagefile). In the instance level settings there is not Max RAM set (set to the ...
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1answer
83 views

Replicating two PostgreSQL databases without using master db

I'm trying to create a simplest possible db cluster for my application and i'm not sure if that's the best way to achieve that so i'm gonna try to explain my situation the best i can. Im basically ...
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1answer
68 views

Compare SQL Server high availability method

I want to provide high availability for my SQL Server. It is important that the service is back as soon as possible, more than making sure that data isn't lost. My SQL Server 2008 R2 is running on a ...
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0answers
137 views

WSREP: failed to report last committed and stop

I have galera cluster and I have 4 nodes. I'm importing some data. however one node gives error. Warning. The warning is; warning WSREP: Failed to report last committed 59102, -q (interrupted system ...
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2answers
236 views

MySQL Cluster Steps To Recover Data If Catstrophic Failure Occurs

I want to know if a catstrophic failure occurs (like a power outage), and all nodes in MySQL Cluster are shutdown in cluster then data will be lost even though a backup was taken? Or it possible that ...
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1answer
75 views

install Galera but mariadb existing on system

I try to install galera on ubuntu 14.04 system. It has already got mariadb and it's working. How can I install it? my command : sudo apt-get install -y rsync galera-3 mariadb-galera-server it ...
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0answers
44 views

Galera Cluster crashes because of “ALTER TABLE” statement?

We use on RHEL7 # rpm -qa | grep maria mariadb-5.5.41-2.el7_0.x86_64 mariadb-galera-common-5.5.41-2.el7ost.x86_64 mariadb-galera-server-5.5.41-2.el7ost.x86_64 Do I analyze logs correct that Galera ...
0
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1answer
101 views

Rebuild Indexes on SQL Server Standard edition

We have SQL Server 2008 R2 Standard on a Windows Server cluster. I want to defrag all indexes on a database. What is the best approach to disable all connections and allow the rebuild of indexes? ...
0
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1answer
68 views

SQL Server does not failback to the primary node

We are running SQL Server 2008 R2 on a Windows Server 2008 R2 two-node cluster. My choice of machine is primary, and the secondary is just a low-end machine for contingency planing. We had a ...
0
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1answer
37 views

Using Galera Cluster(Percona XtraDB Cluster, MariaDB Cluster) for setting up multi master

Before i gotta use one I want to know if it is working in windows OS cause I saw a lot using it in linux OS. Does using galera (Percona XtraDB Cluster, MariaDB Cluster) cluster works in windows?
2
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1answer
141 views

grastate.dat with seqno -1 on a healthy cluster. Why?

We use those versions: # rpm -qa | egrep '(galera|maria)' mariadb-libs-5.5.41-2.el7_0.x86_64 mariadb-galera-common-5.5.40-6.el7ost.x86_64 mariadb-galera-server-5.5.40-6.el7ost.x86_64 ...
2
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1answer
261 views

Restarting SQL Server Agent on a cluster installation

I've just enabled the mail profile in SQL Server Agent and I need to restart the service for it to take affect but the Agent is running as part of a SQL Server cluster and I don't want the cluster ...
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1answer
33 views

Without Quorum Drive.. will it work node1 and node2 in cluster [closed]

Without Quorum Drive.. will it work node1 and node2 in cluster. How it is possible? if not required then where it stores cluster information?
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2answers
876 views

Are there problems with using SQL Server AlwaysOn Availability Groups with Windows 2008R2?

[Cross post from StackOverflow] Brent Ozar published this webcast (slides, video with free registration) entitled "Real-Life SQL Server 2012: AlwaysOn Lessons Learned", in which he repeatedly states, ...
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1answer
47 views

SQL SERVER 2014 Standard - High Availability Listener solution

The company has SQL Server 2014 Standard licenses and we're standing the servers up in a VMware environment. My initial plan is to create 2 instances on each DB server and run Instance1 on SQL1 as ...