Three-node cluster lose two hosts

Similar Questions

• SCAN in a 4-node Cluster

  Version: 11.2.0.3
  Operating system: Solaris 10
  
  I've only worked in 2-node RAC. One of our customer has 4 node RAC in 11.1.0.7. We will switch to a 11.2.0.3 Setup.
  
  My client asked me a question which I couldn't answer with 100% certainty. We will have a normal SCAN which is solved through our Solaris DNS. SCAN name will be resolved to 3 SCAN VIP.
  
  When we have 2 nodes, there will be 2 SCAN listeners in one single node and other 1 on the second node (2 SCAN VIP), leaded to a single node and 1 SCAN VIP, leaded to another
  
  When you have a 4-node Cluster, I guess there are 3 listeners SCAN running on 3 different knots (randomly) and a fourth node should SCAN any listener running on the subject? Am I wrong?
  
  3 personalities of SCANNING can be sealed to public interfaces only at most 3 knots. Right?

  GarryB wrote:
  When you have a 4-node Cluster, I guess there are 3 listeners SCAN running on 3 different knots (randomly) and a fourth node should SCAN any listener running on the subject? Am I wrong?
  Yes...

  If this is the case, there is not much advantage to have a 4th node. Right?

  Laughing out loud
  The clusterware has two types of resources and OF CLUSTERS
  Local resources depend on the physical resource to be online. (e.g. Local listener)
  Cluster resources depend on the cluster (IE can be anywhere in the cluster) (for example SCAN earphone)

  The number three was chosen, not because of the number of hardware resources, but for reasons of availability.
  Three SCAN will ensure that your cluster will always be available for your customers, even if some nodes in the cluster goes down.

  Another pupourse to use the listener SCAN:
  To the new Cluster feature based on the strategy and management of the capacity of the work that it took to do SCAN.
  Policy for the management of databases are deployed on or several pools server must Access the database by using the SCANNER. The use of SCAN is necessary because the political management database instances can run on different servers at different times; It is not possible to use a virtual IP (VIP) address to connect to a particular node or instances of a database managed by the policy.

  As you go from 11.1 to 11.2 I recommend that you use the functionality of the Pocly-Based Cluster.
  You can use the Admin-Managed database although I prefer that you create a RAC database using the database Policy-Managed... which makes the dynamics and the automatic (i.e. managed by Clusterware) creation/deletion of instances. You will use a POOL with a knot... later you can add more nodes in that POOL... Oracle Clusterware/PAP automatically create undo/redo/instances on the new nodes added to this POOL.
  All this is transparent to your customers of Oracle.

  Kind regards
  Levi Pereira

• Extend the current TMS Cluster with two new server

  Hello

  We currently have a cluster of two TMS-Server (13.2.1) installed on a W2K3 Server with a database on a SQL-Server separat

  To have a smooth migration, we thought the following procedure.

  Addition of two new server with W2K8 R2 by installing a TMS 13.2.1 to the cluster with access to the same database.

  After a while remove the two old server and upgrade to TMS14 (updated TMSPE in advance).

  Unfortunately, we get the message, as seen in the PNG-attachment during the installation of the first server in new.

  Anyone know if we could proceed as described above?

  Is the message because of the different operating system. If I click on 'Yes' former TMS-server still works?

  Thank you

  Concerning

  Ingo

  Hello

  The error message is misleading and can be safely ignored, and you can continue with the installation of the new TMS nodes. It was deleted in 14.0 TMS, see bug CSCui34702.

  Kind regards

  Kjetil

• Best practices - addition RDM to the second node (W2K3) MCSC Machine virtual nodes on the physical host computers

  Addition of RDM to the second node (W2K3) MCSC Machine virtual nodes on the physical host computers

  Unable to find another thread on this

  When you add RAW disks to the second node in Virtual Machines across physical hosts in the Cluster / Cluster across boxes,.

  VMware said shared point of the storage drives in the same location as the first node sharing storage disc *.

  -Select use an existing virtual drive...

  -In the drive path, navigate to the location of the disk (quorum) specified for the first node

  -Select the same virtual device node you chose for the first virtual machine shared storage disks, IE SCSI (1:0)...

  In other words to add the RDM to mscs-node2, navigate to/vmfs/volumes/lun1/mscs-node1 / mscs - node1_2.vmdk (mscs-node1_2 - rdmp.vmdk)

  For years we have directly added the ROW the second node specifying RDM disk not existing does not, in general we do directly from the host, not the vCenter, it seems to work fine.

  For what is the safest way, the official method can cause all sorts of problems if you need to cancel the registration of the ROW on the first node (here's where I found no official documentation).

  Delete you or keep the file descriptor? We tried to keep him, but ended up with several mappings to la.vmdk/rdmp.vmdk, so now, this system has disk2_.vmdk / disk2_ - rdmp.vmdk and disk4_.vmdk / disk4_ - rdmp.vmdk pointing to the same RAW.

  What really bothers me is safety, these are very important boxes, I prefer to continue to have the VMDK and rdmp.vmdk in separate data warehouses, and do not have this dependence on the head node

  Your comments please, we are viewing the store only setup of MSCS clusters with lanes separated from RDM and are there risks associated with this?

  * Ref: "Setup for Microsoft Cluster Service - 4.1 and Failover Clustering".

  I realize there was an error in my logic

  When you work with the main node, if there is a requirement to unmap drives ROUGH (move to another cluster vmware, cloning the system etc.)

  Take note of the location of all the rdmp.vmdks

  Remove each rdm disk without deleting

  To add

  Add "Use an existing virtual disk to disk" (yes I know its bad, but once you create the host calling now think its virtual)

  Navigate to the mapping of existing raw device, appearing like a vmdk * and add using the former location of scsi

  Graphic interface hides the descriptor

  A virtual disk has a vmdk and a flat.vmdk

  A CRUDE disk has a vmdk and a rdmp.vmdk (the dish is replaced by vocation)

  A suggestion of one of my companions is to locate the al the ROW in a single data store small, visibility of virtual machines with raw disk went like this

• Virtual MACHINE running on two hosts after hung vmotion

  Hello

  I started a VMotion of virtual machine by host A to host B. The request got hung at 65% for several hours. I restarted the VCenter service, registered to vsphere. The process was running is longer, but now the virtual machine appears on the Host A and host B.

  The Cluster-'Virtual Machine' tab displays the virtual machine and cycles between two hosts seconds couple?

  Anyone seen this before? How can I fix it? Thanks in advance!

  First of all, it's impossible.  A virtual machine cannot be in 2 places at once.  It's just in the transition.

  Secondly, vCenter manages the process but it doesn't actually do the vMotion, ESX hosts are.

  What is happening is life of the virtual machine on the host only until the end of the evolution towards the other host (somewhere around 97%) when the transfer is confirmed with the new host.

  Best thing to do is to restart the services of management on both hosts and see if that frees the vMotion.

• Replication between two hosts

  I have everyone,

  I have two hosts on the same site, in stand-alone mode, but within the same vcenter with licensing standards

  Each host has 3 VMS.

  Is it possible to replicate virtual machines each other on the same VirtualCenter and without cluster?

  Home 1 = VM1 + VM2 + VM3 & [+ VM4 VM5 + VM6 replication]

  Host 2 = VM4 VM5 + VM6 & [VM1 + VM2 + VM3 replication]

  I have enough drive and it will be very safe to run the replicates in minutes in case of problems with a single host.

  Thank you,

  Hello

  If you are using vSphere 5.1, yes you can use Standalone VMware vSphere replication, since vSphere that replication is included in the standard Lincenes.

  http://www.VMware.com/products/Datacenter-Virtualization/vSphere/compare-kits.html

  Short video on the replication of vSphere

  http://blogs.VMware.com/vSphere/tag/vSphere-replication

  See this link for configuration

  http://www.yellow-bricks.com/2012/09/17/back-to-basics-install-configure-and-use-vSphere-replication/

  Concerning

  Mohammed

• 11g Question: Stand alone database vs single node cluster

  We are about to create a new 11.2.0.3 database that will eventually become a 11.2.0.3 in cluster database. Our host servers are hardware IBM pSeries AIX 6.1 running. We will use just Oracle Clusterware and not IBM HACMP. We also plan to use ASM for database storage. The plan is ultimately to have a 2 or a 3-node cluster, but currently, we have only an AIX server available to us.
  
  My question concerns our initial approach to the installation.
  
  It is preferable to install the Oracle database as a stand-alone database first and then convert the database to a RAC cluster as soon as we have the material for the second node? Or would it be better to create the cluster with a single node and install and configure grid Clusterware for a single node cluster and then add the second node when the material becomes available?
  
  I apologize if my explanation is not very clear. Any notice will be considered and appreciated. Thank you.

  Hello

  We are about to create a new 11.2.0.3 database that will eventually become a 11.2.0.3 in cluster database. Our host servers are hardware IBM pSeries AIX 6.1 running. We will use just Oracle Clusterware and not IBM HACMP. We also plan to use ASM for database storage. The plan is ultimately to have a 2 or a 3-node cluster, but currently, we have only an AIX server available to us.

  My question concerns our initial approach to the installation.

  It is preferable to install the Oracle database as a stand-alone database first and then convert the database to a RAC cluster as soon as we have the material for the second node? Or would it be better to create the cluster with a single node and install and configure grid Clusterware for a single node cluster and then add the second node when the material becomes available?

  If you are planning to ACTIVE/PASSIVE here database my option:
  {message: id = 10138477}

  If you are planning in the future use a RAC database:
  {message: id = 10142640}

  If you plan use CARS in the future, you can install Oracle Clusterware without worry about licenses.
  Oracle Clusterware can serve to protect any application (reboot or otherwise on the application failure), free of charge, if one or more of the following conditions are met:
  

• At least one of the servers in the cluster is allowed for the Oracle database (SE or EE)
  http://docs.Oracle.com/CD/E11882_01/license.112/e10594/editions.htm#CJAHFHBJ

  If you ARE database Oracle or EA (i.e., not one SE), you can install the product Oracle Clusterware and Oracle RAC (EE to buy the RAC Option) in a node later you can stretch clusterware adding additional nodes, and more database instance.

  You do not need to create a RAC database, you can create a single database (i.e. Non-RAC) on OH software Oracle RAC using DBCA.

  Although I prefer that you create a database of CAR Policy-Managed database... which makes the dynamics and the automatic (i.e. managed by Clusterware) creation/deletion of instances. You will use a POOL with a knot... later you can add more nodes in that POOL... Oracle Clusterware/PAP automatically create undo/redo/instances on the new nodes added to this POOL.
  All this is transparent to your customers of Oracle.

  Oracle Grid Infrastructure for a stand-alone server (Oracle Restart) is an option only if you plan used to one node. If you are using more than one node... Start with Oracle Grid Infrastructure for a Cluster (Oracle Clusterware).

  Hope this helps,
  Levi Pereira

  Published by: Levi Pereira on March 12, 2012 13:58

• We have SQL Server 2005 cluster (3 node cluster), and if we improve this nodes to 2008 R2, the databases associated with the named instance can stay to the version of SQL Server 2005?

  original title: SQL Server 2008

  We have SQL Server 2005 cluster (3 node cluster) and if we improve this nodes to 2008 R2, can the databases associated with the named instance remain to the version of SQL Server 2005, I seem to disagree with this notion, but still need to validation of the pro.

  One way I can think of to achieve this scenario changes the compatibility level to SQL Server 2005 when the node has been upgraded to SQL Server 2008, so we can upgrade databases to SQL 2008 as and when the vendors provide support for this version.

  Hello

  Here is the Vista forums

  Try the links below:

  SQL Server forums

  http://social.technet.Microsoft.com/forums/en-us/category/SQLServer/

  SQL Server TechCenter

  http://TechNet.Microsoft.com/en-us/SQLServer/bb265254.aspx

  Blogs and Forums SQL server 2008

  http://www.Microsoft.com/sqlserver/2008/en/us/forums-blogs.aspx

• VMotion on two hosts

  We have two hosts and are currently using the same network/vswitch vmotion and vm management.

  I understand that it is best to separate the network for vmotion management.

  (1) may simply run a straight cable between two hosts?

  (2) should the vmotion switch be in a separate network?

  Based on the number of physical network interface cards in your host, instead of connecting the two hosts directly without switch, allows to isolate the vMotion traffic and management VLAN and given that you're going to use a VLAN different you will need a different subnet (network).

• vMotion between two hosts with different version?

  
  Hello

  Can I vMotion VM between two hosts with different version? For example, a virtual machine of esxi 6.0 5.5 esxi and esxi esxi 6.0 5.5 vMotion.

  Thank you.

  Yes, it will avoid you to move.

• vMotion (without shared storage) between two hosts with different vSwitches standard s VM

  I can VM vMotion (without shared storage) between two hosts with different vSwitches standard? The vSwitches on these two hosts have different names and number of NIC, but have the same name of portgroup.

  
  Thank you.

  Yes, you can in a Storage VMotion to one Esxi to another with no shared storage...

  It is important the portgroup bears the same name... This is the reference for the VM...

• 3-node cluster beta - high CPU usage - Loginsight 2.0

  I have deployed the beta version of loginsight 2.0 as a 3-node cluster and I noticed that it is cpu consumption much more than we should. I use either the configuration large or extra-large (16 cores) and barely at all sending traffic to it. This is a new installation, not an upgrade, and each of the 3 nodes shows 50% cpu (8 cores at 100%) usage all the time. I can create a package of support and provide additional information, where can I send it?

  -Jordan

  This issue has been addressed in 2.0 GA

  Jordan - can you please mark this question as answered?

• Move a virtual machine to turn off between two hosts, shared storage

  Dear Experts,

  Please guide me for the next case. There are two hosts of Esxi, host 1 is Esxi 4.0 and host 2 is Esxi 4.1. There are store data SAN storage that is visible to both hosts.

  I watched solard winds VM monitor utility that hosting 2 consumes 90% of the memory while its processor is ok. On host 1 is normal. So, I want to spend only a few VM of to host 1. So please correct me if what I think are OK. I will turn off the virtual machine to be moved from host 2. Then I it will remove host 2 inventory. Then on host 1, I'll go to the data store in the folder that VM and do a right click on the file 'say add to the inventory' and now I'm going to see this virtual machine in the inventory of the host list, just turn on and everything is perfect, is this correct?

  Second question on the same hosts, there are a few other data stores that are visible to a host. As if this is the case there is a virtual machine on a data store that is visible to host 2 and I want to spend this VM to host 1 to reduce load on host 2. How to move this virtual machine because this data store is not visible to host 1? Will I have to copy this VM files in a data store that is visible to host 1? If YES then what real required to copy files?

  Kindly help me.

  Kind regards

  From your description I m assuming that you use not vCenter to manage your hosts, correct?

  If you have a store of data shared between two hosts you can do the steps you descripte (power off, remove the inventory etc.).

  For your second case there are several ways, it depends on where you want to place the virtual machine in the future. Wouldn't be on the shared data store that already exists or can in the local data store on the other host? Or is there an option to also display the current data store to host 1?

  If you want to copy the VM files copy the whole folder of it.

  Kind regards

  Mario

• Travel/cloning between two hosts ESXI VM

  Hello

  I have two hosts ESXI 4.1 with VSphere Essentials for VCenter license. I'm not able to move the virtual machine to one ESXI host to another (power off). It is not supported with VSphere Essentials license? Data warehouses can be shared between the two ESXI hosts?

  What is the size of your virtual machine, what is the speed of the network and how your local storage looks like? Using RAID? How many disks and RAID level? You have a battery attached to the RAID controller write buffer cache?

  The waiting period does not necessarily mean the tasks does not work. Often it is only a delay in the vCenter Server GUI, but the process is still running and you just need to be patient. You see the files being created on the target data store?

  André

• Replication Failover clustering & Hyper-v on a two-node cluster

  Hello

  We have two identical servers.  One to use as a main server, which houses two virtual machines.  The other should be used as a back up in case the main server is not somehow.  We planned on using a solution of third-party software to back up our virtual machines and launch them in the event of failure of the principal server.  However, we discovered just gave the failover clustering in Windows Server R2 2012.

  We have tried to set up a cluster 2 nodes, with our virtual machines properly replicated to the backup server.  Excited by the present, we tried then to simulate failure of the primary server (by pulling on the cable network).  We were a little disappointed to find that the backup server is not automatically run virtual machines.  We did a survey and read than a solution of two nodes requires storage space for additional network (in addition to our two servers).

  I wonder if that's okay?  In other words, a two-node failover cluster requires separate network storage space.  If this is not correct, can someone point me to a set of instructions to correctly configure a two-node failover cluster that will automatically launch the virtual machines on the server backup (in the case of a failure of the principal server).

  Thank you

  Mike Goldweber

  Hello

  Post your question in the TechNet Server Forums, as your question kindly is beyond the scope of these Forums.

  http://social.technet.Microsoft.com/forums/WindowsServer/en-us/home?category=WindowsServer

  See you soon.