Consistency of unicast environment Cluster configuration

Similar Questions

• Help on consistency + Weblogic Cluster configuration

  Hello
  
  I am new to consistency. I explore the consistency to fill one of my condition.
  
  My needs: I have an application deployed on a clustered server logical Web environment. I need to cache data specific to the application (java card) and that should be available to all nodes in the cluster WLS. Application that are cached, data can be updated from any of the node in the cluster WLS and updated the application cache data should be available for all the nodes in the cluster WLS. The nodes in the cluster of WLS resides in different machines from different places.
  
  Can I use coherence as a services of caching for my requirement?
  
  If Yes, do I need to start a server cache consistency on each node of the cluster WLS?
  
  If so, do I need to specially configure these servers cache, so that these cache servers would communicate each other in case of updates of data in the cache?
  
  It will be very helpful if you could also provide sample configurations to achieve the above scenarios.
  
  Thanks in advance!
  
  Kind regards
  Srinivas M

  You can start a cache server in the network by using for example

  # home directory
  BEA_HOME="/home/oracle/bea"
  export BEA_HOME
  # java vendor (for example Oracle or Sun)
  JAVA_VENDOR="Oracle"
  export JAVA_VENDOR
  # cache server klasse
  CACHE_SERVER_CLASS="com.tangosol.net.DefaultCacheServer"
  export CACHE_SERVER_CLASS
  # coherence options
  COHERENCE_OPTIONS="-Dtangosol.coherence.management=all"
  export COHERENCE_OPTIONS
  COHERENCE_OPTIONS="${COHERENCE_OPTIONS} -Dtangosol.coherence.management.remote=true"
  #COHERENCE_OPTIONS="${COHERENCE_OPTIONS} -Dtangosol.coherence.cacheconfig=WEB-INF/classes/session-cache-config.xml"
  #COHERENCE_OPTIONS="${COHERENCE_OPTIONS} -Dtangosol.coherence.session.localstorage=true"
  
  WL_HOME="${BEA_HOME}/wlserver_10.3"
  export WL_HOME
  BEA_JAVA_HOME="${BEA_HOME}/jrockit_160_05_R27.6.2-20"
  export BEA_JAVA_HOME
  SUN_JAVA_HOME="${BEA_HOME}/jdk160_11"
  export SUN_JAVA_HOME
  
  if [ "${JAVA_VENDOR}" = "Oracle" ]; then
       JAVA_HOME="${BEA_JAVA_HOME}"
       export JAVA_HOME
       MEM_ARGS="-jrockit -Xms512m -Xmx512m -Xss128k -Xgcprio:throughput"
       export MEM_ARGS
  fi
  
  if [ "${JAVA_VENDOR}" = "Sun" ]; then
       JAVA_HOME="${SUN_JAVA_HOME}"
       export JAVA_HOME
       MEM_ARGS="-server -Xmx512m -Xms512m -Xmn256m -Xss128k -XX:PermSize=128m -XX:MaxPermSize=128m -XX:+UseParallelGC -XX:ParallelGCThreads=2 -XX:+UseParallelOldGC -XX:+AggressiveOpts -XX:+UseBiasedLocking"
       export MEM_ARGS
  fi
  
  # classpath for the cache server
  CLASSPATH="${WL_HOME}/coherence/coherence.jar"
  export CLASSPATH
  
  # start the cache server
  ${JAVA_HOME}/bin/java ${MEM_ARGS} ${COHERENCE_OPTIONS} ${CACHE_SERVER_CLASS}
  

  -Dtangosol.coherence.management = all option gives made you some useful information about what the cache by using for example the browser mbean provided by jconsole or jrockit mission control.

  You can create an application in which you create a cache, below is an example of a servlet

  import com.tangosol.net.CacheFactory;
  import com.tangosol.net.NamedCache;
  
  import javax.servlet.ServletException;
  import javax.servlet.http.HttpServlet;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  import java.io.IOException;
  import java.util.Random;
  
  public class TestServlet extends HttpServlet {
  
      private NamedCache movies;
  
      public void init() throws ServletException {
          movies = CacheFactory.getCache("repl-movies");
          movies.put(10, new Movie(10, "Rear Window", "Alfred Hitchcock"));
          movies.put(20, new Movie(20, "Vertigo", "Alfred Hitchcock"));
          movies.put(30, new Movie(30, "Double Indemnity", "Billy Wilder"));
          movies.put(40, new Movie(40, "Touch of Evil", "Orson Welles"));
      }
  
      protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
          Integer[] integers = {10, 20, 30, 40};
          Random random = new Random();
          while (true) {
              movies.get(integers[random.nextInt(4)]);
          }
      }
  }
  

  Package the servlet into such a WAR file and deploy it in a WebLogic cluster configured.

  By accessing the servlet on the different nodes in the cluster a new cache is created and added to the
  already running DefaultServer.

  The most difficult part is to configure your cache. As you can see in servlet initialization we EU something like CacheFactory.getCache ("repl-movies");
  Lack of consistency with some configurations of cache example that are contained in the coherence.jar (coherence-cache-config. (XML).
  The following entry is used

  
        repl-*
        example-replicated
  
  
        example-replicated
        ReplicatedCache
        
          
            unlimited-backing-map
          
        
        true
  
  

  A replicated cache is probably what you need as well. You like all the data available on all nodes. If you want to use
  your own cache configuration, you can add the option - Dtangosol.coherence.cacheconfig (see the for the default server startup script)

  A good introduction on coherence can be found here:
  http://www.packtpub.com/article/installing-coherence-3.5-and-accessing-the-data-grid-1
  and
  http://www.packtpub.com/article/installing-coherence-3.5-and-accessing-the-data-grid-2?utm_source=rk_coherence_abr1_0310&utm_medium=content&utm_campaign=ramsai

• Anyone using unicast technology to configure weblogic server cluster?

  Anyone using unicast technology to configure weblogic server cluster? I'm curious to hear how you do where oracle recommeds unicast multicast.
  
  Published by: user8026575 on Sep 2, 2010 13:31

  Hello

  From WLS10... as soon as you create a Cluster, by default it will use the type of Communication as "Unicast". But if you want to change... then please follow the steps in AdminConsole below:

  * 1). * click lock & Edit button
  * 2). * AdminConsole---> environments---> cluster--->---> Communication (tab)---> (tab Sub) messaging
  When this page changes the "Mode of messaging:" Unicast or Multicast.
  * 3). * save changes, and then activate the changes.

  .
  .
  Thank you
  Jay SenSharma
  http://WebLogic-wonders.com/WebLogic/ (WebLogic wonders are here)

• Is ASM cluster configuration, possible to detail all cluster hosts

  In the case of configuration in cluster of ASM (where its possible to create one ASM DiskGroup is shared between all hosts in the cluster) is it possible to obtain information on all hosts (cluster node) (which are part of this cluster configuration) one machine.
  
  For example. If we have three nodes Node1, Node2, and Node3 configured using ASM cluster (i.e. default ASM instance will be ASM2 ASM1, and + ASM3 on these machine) and then I create multiple starts (some shared between all three nodes and bit limited to single node or two) using a set of SAN disk visible to all.
  In such a scenario, can I get the details of Node2 and Node3 comes to log in Node1 (i.e. Since one machine one single node part of ASM cluster configuration, I need information of all other machines/nodes).
  
  Is this possible? If so, some tips on the way which will be a great help.
  
  ~ Stéphane.

  Hi stephane,

  Maybe I'm missing something here, or I'm too detailed, but depending on how General should be your script, there are some steps, you must check to avoid the false assumptions - e.g., as here: "+ to get the CRS_HOME, I can grep for crsd.bin. If I don't get this running process, this means that configurations is a StandAlone OracleDB and turns to the ASM, ASM is too stand-alone instance. + »

  If you can't find the crsd.bin running, it could also mean that it will not turn now - for some reason any. If you find a DSO running instance, but not crsd.bin, Yes, you can generally assume that you would have a configuration of ASM nonclustered (autonomous), unless you run into a BUG / failure.

  Therefore, it might be a good idea to check the existence / first configuration, then to the current process. For example:

  IF you have installed Oracle Clusterware, you will find an init.cssd under /etc/init.d (for Linux, similar directories for other OS). Therefore, check first for the operating system, if you have the OS specific scripts, then just check for the init.cssd init directory.

  The advantages of checking the init.cssd are: you will get the Oracle Clusterware House - it is set as a variable:
  = ORA_CRS_HOME / ora/clusterware AND you usually get the Oracle user: ORACLE_USER = oracle

  Then you can check if Clusterware is running. You will have more than one way to do it now. You can use ps - ef or you can use Clusterware orders as crsctl check CRS or things of that kind.

  Of some people could argue that there is a DSMB for ASM in standalone (non-cluster) ASM facilities running and there is therefore an init.cssd. YES, but this init.cssd shouldn't be in init in this case - see the comment in the header of the script init.cssd: "In a local, nonclustered, installation without CARS, it must be placed in a directory rcX.d".

  However, just to be safe, you can always check whether or not you will find init.crsd, init.evmd, which are very strong indicators that Clusterware has been installed on the system, unless it was not uninstalled properly...

  Once you've found the Clusterware installed, running AND you know the path to the House - it's easy:

  As said previously, you can use olsnodes to get the nodes in the cluster. You can still use crs_stat. It will tell you the ASM / RAC, the instance number and this node the instance number is running on:

  Name = ora.myrac1.ASM1.asm
  TYPE = application
  TARGET = ONLINE
  STATUS = online on pmrac1

  As for CARS DB instances:

  Name = ora.myrac.myrac1.inst
  TYPE = application
  TARGET = ONLINE
  STATUS = online on pmrac1

  To determine which is the node that you are running your script on: host name must do.

  Of course, all this will work only IF you have installed Clusterware. For environments not clustered, you must work with the ps - ef command, sqlplus and oratab file as you mentioned below, which makes it a bit more complicated. We could predict that's SO so OTHERWISE in your script - IF cluster, THEN do foo, otherwise do BLAH. Just an idea.

  For this question:
  Belongs to ASM cluster - (yes/no)
  (If crsd.bin is running, ASM is clustered. Can this method be invoked always?)

  IF you have a cluster installed, ASM should be part - is the default and recommendation. However, you can run in a broken configuration. You want to guess in your script and secure?

  Just a few random ideas. Thank you
  Markus

• Consistency Cluster configuration

  Given the configuration,
  
  If there are two packages of ejb - jar A and B, and each has a configuration file from the cache checked in these packages of jar and they have both the same name of the cluster and cluster-port specified.
  
  Should I wait:
  
  There will be two instances of consistency from one for every A and B and then these two instances would form a consistency group?
  
  Thank you

  Hi Pierre,.

  Yes I think it's okay. Two EJB applications need to be isolated from each other within the app for each server is a member of the cluster.

  JK

• VCS Cluster configuration

  I'll put up a cluster between VCS - 02c in version 8.x and one of them will be the captain. I will put all endpoints in the VCS - C Master points, what would happen if the master of VCS - C problems? My end points would be automatically transferred to another VCS - C (backup)?

  Hello

  Setup is a cluster of VCS VCS a set up a Master and others as a slave.

  Your points of termination/Codec must register to the VCS cluster (you need to update your DNS with VCS cluster name i.e. clustervcs.domain.com with the ip addresses of two VCS.  You can use SRV records to do a primary and the other back).  If your CODEC does not support the SRV record then you can put the IP of master VCS and the registration, the VCS Master will provide the idec with its ip address and ip address of the slave VCS.

  A good link:

  http://www.netcraftsmen.NET/blogs/entry/Cisco-VCs-clustering-configuration.html

  I hope this helps.

  Kind regards

  Ahmed

• Transmission of events when Cluster configured

  When clustering is configured all nodes in the cluster is the transmission of events or is - it just address ILB?

  All nodes to do.

• Move cluster configured with replication SRM and Vsphere

  All,

  We go 2 groups in the near future to achieve a geographical distance between the 2 sites.

  A cluster is equipped with VMware 5.0 replication SRM and vSphere and the other cluster running VMware 5.5 and SRM in combination with replication of vSphere.

  What is the best way to move these clusters, I must stop the replication or interrupt the replication process and are these action to perform on SRM or we need to perform any action on the virtual machine itself?

  I read that a stop is setting the State to not configured including destroy all files in the target directory.

  Does anyone have an experience by physically moving a cluster managed by SRM (and replication of vSphere)

  Any help is welcome

  Thank you

  Gerbert Coolen

  Just pause replication before stop you the VR device on the site target/DR. stop vs break with vSphere replication - VMware vSphere Blog - Articles from VMware

• VSAN in nested environment – maximum configuration

  Hello

  I used vSphere 5.5 U2.

  According to the maximum of Maximums, components Configuration Guide for each host VSANS are 3000.

  However, I was building VSANS in nested environment, and I checked the number of component.

  In nested_vsan.log, it seems that the maximum components for each host VSANS are 1500.

  Why?

  Maximum components per host VSAN change material?

  Thank you

  The amount of memory available on each ESXi host plays in the total number of supported components. In light of these are 'virtual' ESXi servers, they are probably configured with a memory of the minimum quantity and thus the numbers will be different from the maximum support that is 3000.

• NEWBIE: vSwitch in a matter of the host Cluster Configuration

  Hello

  I'm pretty new to vmware and will be starting my first implementation in the coming days.  I had training and have a very good understanding of what it is I'm doing it but have a few issues of networking.

  If we do not have Enterprise Plus and must use Standard vSwitches on each host in the cluster (using 3 host cluster), that mean each virtual NETWORK adapter configurations on each vswitch hosts will be exactly the same?  So, if I put the vMotion group of ports on host A to use the physical network (vmnic0 and vmnic1) interface cards whose 192.168.10.1 IP address et.2.  It means that I then configure the same IPS for vMotion Port Group (vmnic0 and vmnic1) on host B and C of the host in the cluster?

  If this is the case then wouldn't NIC physical on the three ESX hosts in the cluster need to have same IP configs, in which case wouldn't that cause conflicts of intellectual property, no?   Please advise if I am not clear enough.  Thankx.

  Rick,

  You would need separate IP addresses for each VMkernel port that you are creating.  Thus, for example, if you create 2 VMkernel ports per host, 1 host could avoir.1 et.2, host 2 may avoir.3 et.4 and host 3 can be affectee.5 et.6.

  But remember, you are not assigning IP addresses for uplink adapters (vmnic), you will then assign to the VMkernel Ports.  Your ESXi host will have a VMkernel default port for management (created during installation) which will have the IP address of your hosts assigned management.

  If you create a separate network for vMotion (recommended), this would require a VMkernel port separated with the checkbox "Use this port for vMotion" checked, and who would live on, most likely, a separate vSwitch with its own uplinks.  The VMkernel port would have its own unique IP address.  You will need to repeat this configuration (with specific to host IPs) on each host.

• HFM Application Cluster Configuration - failed

  Hello
  
  I use the EPM 11.1.1.3 System. The Oracle database version is 10g. When I tried to reconfigure HFM Application cluster via the EMP Configurator, I get error below. I just added the name of the HFM server to the cluster and click Next. Please could you help on this issue.
  
  Error Msg in the log file:
  The server name duplicated SERVERNAME line: 1062 file:.\CHFMConfig.cpp error code: 0 x 0 error: the operation completed successfully.
  The user has been properly set up DCOM limitations
  Try to configure the cluster server.
  Cannot set the application servers and Clusters. Line: 515 file:.\CHFMConfigUtil.cpp Error code: 0x8004082a error: #1578 IDispatch error
  General error. Line: 827 file:.\CHFMConfigUtil.cpp Error code: 0 x 80040815 error: error IDispatch #1557
  
  Thank you
  Michel K

  I removed the name of server in doubles in the HFM_Config.xml file and solved the problem.

  Thank you

• Second cell in vCD cluster configuration/license?

  I install the first server and provided the response file to the 2nd cell and finished the installation/configuration. Now I can see my 2nd cell under 'Cloudy cells' on the web interface of the cell from my 1st. However, I can't access the web interface of the 2nd cell (layout not found but all services are currently running) and I see the 'vCenter' is checked only for cell1 under "cloudy cells. Is this expected behavior, or I guess to see the web interface on cell2 and configure the license, vcenter and vshield information?

  Renou - kamel

  There is a single VC proxy for each instance of vCenter server that you have registered with vCD and the proxy works on a cell in the cluster, so it is expected.

  You should look at the logs on the disk of the cell 2nd to see if errors have been reported.  I start with cell.log in $VCLOUD_HOME/logs and if that doesn't show any errors, then check vcloud-container - debug.info.

• Migrate JMS queues to following environment and Configurations

  Hello
  
  I created the Q, the CF and CP in the Dev environment. I would like to migrate these configurations using scripts following environment, rather than recreate them manually.
  
  Concerning
  REDA

  WLST is here for you...

  http://WebLogic-wonders.com/WebLogic/2010/11/12/create-JMS-resources-using-WLST/

• Issue of cluster Configuration

  Hello
  I have a 3-node cluster and 1 of the present has more cpu rather the other 2.
  Is there a document that suggests that all nodes should be equal?

  Hello

  This question you can get you anwser using this note:
  RAC: Frequently asked Questions [220970.1 ID]
  Can I have different servers in my Oracle RAC? Can be from different vendors? Can be different sizes?
  ...
  Oracle RAC supports a cluster nodes with different hardware configurations. An example is a cluster to another node with 6 CPUs and 3 knots with 4 processors. This can easily happen when you add a new node after the cluster has been in production for some time. For this type of configuration, clients must take into account some additional features for optimal cluster performance. The servers in the cluster can be from different vendors; It is fully supported as long as they run the same binary files. Given that many clients implement Oracle RAC for high availability, you must make sure that your hardware vendor will support the configuration. If you have a failure, you will be supported for the hardware configuration?
  ...

  Kind regards
  Levi Pereira

• VMware cluster configuration

  When adding the second node to the cluster I m getting the errro message "the following nodes cannot verify that they can host the quorum... resource." (hr = 00000000, {B8C4066E-0246-4358-9DE5-25603EDD0CA0}, {A976DC09-0108-410A-AF57-68C05F9A42F7}, 1, 1, 1), (null)

  I have attached the log files.

  And as soon as I turn on the second node of the cluster first machine configuration file value "scsi0:1.present ="TRUE"turns to"False"

  Clustering is not supported on VMware - it cannot share disks - so that's why you receive the warning of quorum. However, under VMware 5.5 and before it works but has need of a bit of configuration I think (google it).