Failover for a distributed cache configuration

Similar Questions

• Distributed Cache configuration

  Hello
  
  I'm setting up a cache in my application system. Distributed of this regime will be in a separate JVM. We have 3 instances of our application to support several outputs and each instance has the same clusteraddress but a different clusterport.
  
  Example:
  
  App:
  clusteraddress = 123.456.78.9
  clusterPort = 12345
  
  App2:
  clusteraddress = 123.456.78.9
  clusterPort = 23456
  
  App3:
  clusteraddress = 123.456.78.9
  clusterPort = 34567
  
  I have 3 instances of distributed cache JVM? I don't know how I could distinguish the distributed JVM cache to manage each separately from the app by liberation.
  
  Thank you

  Hello

  You can also use a single cluster, but three names of service different, even if it means that when bring you down the JVM cache server, bring back you for all three versions.

  Regarding the cache server machines virtual Java, you must use several of them on multiple machines to ensure that the caches are stored and you do not lose data in the event of node failure.

  If you use different groups then you should use another set of JVMs for different groups, otherwise you would be facing the problem even to shoot down all clusters at the same time, to shoot a.

  I would also suggest using a different clusterport, but is also a clusteraddress different for each cluster, as we had some problems when using multiple clusters with only clusterport being different on the same box.

  Best regards

  Robert

• Setting expiration time for a distributed Cache

  I have the bottom of config for my server for consistency. What is politics of delay and the expulsion of default expiration? And how to change the default settings?

  <cache-config>
  <caching-scheme-mapping>
    <cache-mapping>
      <cache-name>TEST_CACHE</cache-name>
      <scheme-name>distributed-extend</scheme-name>
    </cache-mapping>
  </caching-scheme-mapping>

  <caching-schemes>
    <distributed-scheme>
      <scheme-name>distributed-extend</scheme-name>
      <service-name>DistributedCache</service-name>
      <lease-granularity>member</lease-granularity>
      <backing-map-scheme>
        <local-scheme/>
      </backing-map-scheme>
      <autostart>true</autostart>
    </distributed-scheme>
    <proxy-scheme>
      <service-name>ExtendTcpProxyService</service-name>
      <thread-count>5</thread-count>
      <acceptor-config>
      <tcp-acceptor>
        <local-address>
          <address>localhost</address>
          <port>9098</port>
        </local-address>
      </tcp-acceptor>
      </acceptor-config>
      <autostart>true</autostart>
    </proxy-scheme>
  </caching-schemes>
</cache-config>

  DistributedCache

  LRU

  1000

  1 h

  Configuration of Caches

• Failover for the RV320 router configuration

  Hello

  I have a RV320 router with a WAN connection to the office LAN and USB 3 G modem for failover.

  However the switch is malfunctioning.

  When I unplugged the cable to WAN it works as expected, the 3 G modem take longer after a few seconds.

  But when I have trouble with connection overseas, WAN is still in place and the router is not switch to the 3 G modem.

  Is it possible to configure the router so that regularly ping a specific IP address, and if the ping command fails, he move to the 3G connection?

  Thank you.

  The parameter you need is under System Management > Dual WAN

  - Select 1 WAN, then click on modify.

  -Under Network Service detection, you can specify an internet host to act as the trigger for failover.

• < Member-listener > adding grace to cache configuration does not

  Hello
  
  I'm trying to add a < member-listener > go in the settings of caching in the cache configuration file, but it does not add the < member > earpiece for the cache service.
  
  Cache configuration:
  
  < distributed plan >
  < scheme name > example distributed < / system-name >
  < service name > DistributedCache < / service-name >
  < support-map-plan >
  < local plan >
  < system-Ref > example-binary-support-map < / plan-ref >
  < / local plan >
  < / support-map-plan >
  com.sample.MemberEventLogger < member-listener > < / listener Member >
  < autostart > true < / autostart >
  < / distributed plan >
  
  < local plan >
  < scheme name > example-binary-support-map < / system-name >
  HYBRID of <-eviction strategy > < / eviction strategy >
  < high-units > {back-size 0} < / high units >
  < Unit Calculator > BINARY < / Unit-Calculator >
  < timeout > {back-end 1 h} < / timeout >
  < dumps-system > < / dumps-plan >
  < / local plan >
  
  Consignor member of events:
  
  package com.sample;
  
  import com.tangosol.net.MemberEvent;
  import com.tangosol.net.MemberListener;
  import com.tangosol.util.Base;
  
  SerializableAttribute public class MemberEventLogger implements extends Base {} MemberListener
  
  public MemberEventLogger() {}
  Super();
  TODO auto-generated constructor stub
  }
  
  @Override
  {} public void memberJoined (MemberEvent arg0)
  System.out.println ("* joined Member:" + arg0.getMember () .getMachineName () + "Port:" + arg0.getMember () .getPort ());
  }
  
  @Override
  {} public void memberLeaving (MemberEvent arg0)
  System.out.println ("* Member leaving:" + arg0.getMember () .getMachineName () + "Port:" + arg0.getMember () .getPort ());
  }
  
  @Override
  {} public void memberLeft (MemberEvent arg0)
  System.out.println ("* left:" + arg0.getMember () .getMachineName () + "Port:" + arg0.getMember () .getPort ());
  }
  
  }
  
  When I start the cache node, that must be added the MemberEventLogger listener but I don't see anything in the papers when I start and stop several servers. Everything works fine, it I explicitly add the MemberListener using the API
  
  cacheService.addMemberListener (new MemberEventLogger()); Since the code
  
  Please let me know where wrong me?
  
  Thank you very much!
  NJ

  I have a similar problem with the earpiece of the partition. But does the job of breaststroke .

  So try this

  com.sample.MemberEventLogger

• HA Dell two, Sonicwall for two ISP links configuration

  Dear experts,

  I have two Dell SonicWall NSA3600 with two ISP links.

  Currently one that nsa3600 with two links ISP uses with configured load-balancing feature.

  Now I want to configure hardware failover using NSA3600 secondary.

  I know how to configure hardware failover with NSA3600 unique using two Internet service providers.

  But I have no idea about 'How to configure hardware failover for two NSA3600 with two Internet service providers.

  You have an idea on that?

  Thank you.

  Warm greetings,

  Zaw

  Hi Zaw,

  According to my understanding of the question you posted "How to configure hardware failover for two NSA3600 with two Internet service providers. »

  If so there is no special configuration is required. It will be like the regular HA installation. the 2nd Internet service provider, you need a switch connecting the two NSA 3600.

• Distributed cache limit size

  Hello

  I want to create a cache distributed with node 2.

  Each node can have maximum of 500 entries.

  Total entries in the two set of node cache should not exceed more than 1000.

  If the user tries to put more than 1000 items in the cache, then a few old entries from the cache (LRU, LFU) should be removed from the cache and new organizations must be added.

  Can you please help me with the schema for the above scenario.

  Your help will be appreciated.

  Thank you and best regards,

  Viral Gala

  I think that you already had a response to this on the Support of coherence OTN forum: size limit of the distributed cache

• Possible security for the Web-based Configuration

  My colleagues and I found something very interesting today... Despite having configured the FTP security settings (which have been confirmed to set up and in funcitoning. I can't open an FTP session to our remote target without specifying a username admin and the password) If you open the configuration tool based OR web in a browser, you can send via FTP to and from the target using the file remote browser without being connected to all! Everyone knows this?

  Apparently, these permissions are separate from FTP, but you can define these special permissions on the page of the security configuration for the web-based configuration utility.

• Is there an option for a default application configuration in weblogic?

  Hi guys,.
  
  I have an application deployed on a server admin.
  
  I access my http://localhost:7001 app / browsestore
  
  I want to access the application only if I enter http://localhost:7001 in the address bar
  
  Is there an option for a default application configuration?
  
  Thanks in advance :)

  Hello

  OPTION - 1).
  Assign the value of the 'context root' as element.
  It will make your WebApplication a default web on the server application...
  To change the root of context in weblogic.xml next entry is necessary:
  Example:
  
  
  /
  

  OPTION - 2).
  If you do not want to change your "weblogic.xml" and then log in to the admin console-
  Servers---> YourManagedServerName (Click)---> Protocol (tab)---> Http (sub-tab)---> the default Web application context root:

  NOTE: -.
  In the field above, please specify your root context WebApplications that precedes a slash (example: /MyContextRoot)...sothat after the restart of the server the Application will become your default WebApp servers...)
  .
  .
  .
  Thank you
  Jay SenSharma
  http://jaysensharma.WordPress.com (WebLogic wonders are here)

• Consolidation and failover for the uplink on the Distributed switch port group

  Hello

  I have a problem with the implementation of a distributed switch, and I don't know I'm missing something!

  I have a few guests with 4 of each physical cards. On the host eash I configured 2 virtual switches (say A and B), with 2 physical network by vSwitch using etherchannel adapter. Everything works fine for etherchannel and route based on the hash of the IP for the latter.

  Recently, I decided to create two distributed switches and move the respective physical ports of virtual switches to this distributed switches. Once again, I want to configure etherchannel and route based on the hash of the IP. But when I open the settings for the uplink port group, aggregation and failover policies are grayed out and cannot be changed. Apparently they inherit configuration also but I don't know where!

  Chantal says:

  Once again, I want to configure etherchannel and route based on the hash of the IP. But when I open the settings for the uplink port group, aggregation and failover policies are grayed out and cannot be changed. Apparently they inherit configuration also but I don't know where!

  You must set the card NIC teaming policy on trade in reality and not on the uplink group more expected.

• Insufficient to satisfy resources configured level of failover for HA

  Dear Sir / Madam,.

  I have ESX 3.0.2 two clusters.

  ABC1

  14 machines in cluster ABC1

  ABC2 = ERROR HA AGENT ON AC2 IN CLUSTER IN ABC ABC HAS AN ERROR

  4 machines in cluster ABC2 (interesting thing is I changed 7 machines to ABC2 cluster and after the lunch break, he moved to ABC1 3 machines I think)

  Three resources (high, normal, low) and 2 high 12 slots machines to low and 2 Normal machines.

  HIGH

  2 machines

  LOW

  12 machines

  Normal

  2 machines

  Now whenever I tried to start or add new machines it gives me resources insufficient level of failover to satisfy error configured for HA...

  Kindly help me in this regard

  Thank you

  Malik Adeel Imtiaz

  SSE

  NetSol Technologies

  + 923014477817

  Hello

  If you want to make sure that you would not have such problems. Change the HA admission control to "Allow vm can be powered on if they violate grouped availability."

  I saw that I check to restrictive and therefore give more problems using Quen.

  Also remove any reserve memory. Here are the most common reasons.

  Best regards

  Lars Liljeroth

  -

• failover for JMS

  Hello
  need help to make the failover jms in weblogic 10.3
  I have confugured
  two jms Server JDBC as a persistence store, jms module with factory connections, distributed queue targeted to a cluster, I want that if a weblogic server is down the other Active Server should have the message that was in the jms server failed.
  
  thnks in advance
  Schmitt

  In a judgment or a JMS server failure messages are unavailable until the restart of the JMS server. This is true regardless of whether the backup store is a JDBC store or storing files, and if the message is stored in a distributed queue member. For more information on one of the approaches to auto restart, see the white paper "Automatic Service Migration" to [http://www.oracle.com/technology/products/weblogic/pdf/weblogic-automatic-service-migration-whitepaper.pdf]

  Here are the best config of highly recommended practice for WL JMS clustering:

  1 - set up a store on each server, each failing migratable target its server target

  2 - configure a JMS server on each server, edit the JMS server to refer to the custom local store and make sure that the JMS server uses migratable target of the server by default (so that it has the same target as his store)

  3. set up a target of cluster module

  4 - configure a subdeployment for the module and fill the subdeployment with the exact list of JMS servers that using your

  5. set up a distributed queue and target the distributed queue targeting advanced so that it is targeted to the subdeployment you defined above

  Once you have completed these steps, you can optionally use the automatic migration feature so that the stores and the JMS servers automatically restart and/or migrate as needed. Another option is to use 'migration of the server' for an automatic restart instead, and still a third option is to use a third-party HA framework to automatically restart failed servers.

  Please JMS related future post questions to the newsgroup JMS.

  Kind regards

  Tom

• HP Pavilion g7-2004sd suitable for implementing SSD caching and upgrade ethernet card

  I intend to buy the laptop mentioned above, which comes with a 750 GB (5400 RPM) HDD, Windows 7 64-bit operating system.

  To make programs run faster, I want to do an upgrade of SSD with the Intel SSD 313 caching.

  The store where I buy the laptop does not support this, but I was told that the standard HP warranty is not null when done elsewhere. My question what is the best choice for caching, for example 20 GB (by the Intel SSD 313) or by implementing caching of Corsair SSD 60 GB, assuming that, on the motherboard, there is a space for installation of the caching.

  Is it also possible to upgrade the ethernet card and replace the default map with this one:

  Intel WiFi 300Mbps (6235 N) + Bluetooth 2.1, 2, 1 + EDR, 3.0, 3.0 + HS, 4.0 (WHEAT) (dual 2.4 Ghz & 5.0 Ghz band)

  to make the WiFi works best when more than one user.

  To be honest, I'm not sure that this system will support the caching of the WSSD.  Pagedownload of systems that caching of the WSSD to support have usually a driver Intel RST available under chipset on the software and drivers.  This feature is generally reserved for the final product lines more high as ultrabooks and some Envy laptops.

  Page 41 of this guide lists the available wlan modules that will work in this book.  If it is not in this list and was not ordered to HP, then the wlan card will not work.

  To be honest, looks like a Ultrabook as is this a more of what you are looking for because it comes with a cache of WSSD drive.  It does not list the technical details, but it appears when the customization of the laptop and it is not removable during the configuration of the laptop.

• How to plan the failover for the following scenarios in Flex-connect mode.

  The following queries are against the AP high availability (no SSO failover or controller HA), which means that if a controller fails, the AP will be failover to the secondary controller that is in a different location than Geo. the AP will be to connect Flex with local switching and local authorization mode: in this scenario, here are my questions

  1: if I have a SSID that has a set of interfaces that are connected to him, can I switch it on the other controller where there may be a single WLAN connected. ?

  2:do, we need to subnet masks to match both ends?

  3: if I have a SSID with open authentication, can I configure the SSID of the remote network without authentication?

  4: can someone link me to the top with a document that explains the configuration of the case study of the flex-connect mode fail on scenarios.

  Any help given would be really appreciated.

  Thank you.

  1: if I have a SSID that has a set of interfaces that are connected to him, can I switch it on the other controller where there may be a single WLAN connected. ?

  The groups interface works only for centrally switch not locally

  2:do, we need to subnet masks to match both ends?

  See #1

  3: if I have a SSID with open authentication, can I configure the SSID of the remote network without authentication?

  If you configure an SSID with open authentication, then the all having APs SSID assigned to it will use.  Open authentication is identical to no authentication.

  4: can someone link me to the top with a document that explains the configuration of the case study of the flex-connect mode fail on scenarios.

  Do a search on Google for 'FlexConnect deployment guide It will have links to failover.

  -Scott

• Postgrase vRA distributed deployment Configuration

  Hello

  We provide deployment distributed for vRA 6.2.2 and have question around the Postgres SQL Server implementation. Documentation talking about DB server between vRA device cluster. Does vRA mandatory distributed deployment requires vPostgres in cluster or can I separate a single instance of Postgres and post the two HRV to the same device.

  We do not want cluster DB server unless it is mandatory for the vRA.

  If only Postgres can meet the requirement, is there no specific configuration in DB let connect the two devices to HRV?

  Yes, you can use simple Postgres and works without any problem. And there is no specific requirement as such. He usually recommendation to have Postgres clustered for HA.