test your HA cluster

Make your datacenter vmware HA clusters to ensure they work effectively in the event of a host failure any formal trial? What kind of test you do and how often? I.e. to draw power and to see that if another host restarts the virtual machine is not probably all this practical in most organizations - so, how you can win insurance that your cluster is suitable for use, what kind of disaster reherseal exercises do you?

Normally, I test this as soon as when new HA/DRS clusters are put into service, and he seems to test it's self every now and again when you get a GROUP or another type of hardware failure.

If you have an ILO/iDRAC remote management interface, then you can reset the power of a controlled test, but perhaps a cleaner option would be to modify the host isolation response to turn off or restart the virtual machine and then drop the management interface of the home that you test.

My assumption is that if the State HA vSphere is conencted (seen on the contents of the host tab) or there is no configuration issues (seen on the summary of the cluster tab), then I trust that it works.

See you soon,.

Jon

Tags: VMware

Similar Questions

  • [FAD] A few questions on the article of Timo "JDev: always test your application with the ApplicationModule Pooling disabled.

    Hallo Timo,

    I read your article JDev: always Test Your App with the regrouping of ApplicationModule turns off | JDev & amp; amp; ADF Goodies and I have some doubts.

    • I understand that you have disabled to AM pooling only to show the problem and the applications in production should always work with 'M bundling active. Right?
    • The substitution of activateState and passivateState functions must be performed when the AM is used to store data that is specific to the user. Right?
    • To store the data of the user in the AM, it is necessary to use the mechanisms of session? Or I might just add to the private variables AM (username, name, departmentName,...) to store the information of the user?
    • I see you used the Session instead of HTTPSession class to manage the session. What are the differences between these classes? Session the recommended class to use is?
    • Where can I find which are the main stages of the life of the session and functions to manipulate? 1-2 examples of creation, destruction, making the session which expires after e.g. 10 minutes of user'sinactivity... would be happy if possible.

    Thanks a lot a lot.

    Federico

    • I understand that you have disabled to AM pooling only to show the problem and the applications in production should always work with 'M bundling active. Right?

    Yes

    • The substitution of activateState and passivateState functions must be performed when the AM is used to store data that is specific to the user. Right?

    Given no, everything must be save in the activation/passivation. If you store something for use wide application and don't save during passivation, he went by activating the module application ID again.

    • To store the data of the user in the AM, it is necessary to use the mechanisms of session? Or I might just add to the private variables AM (username, name, departmentName,...) to store the information of the user?

    I like to keep the info in the plan to use session.

    • I see you used the Session instead of HTTPSession class to manage the session. What are the differences between these classes? Session the recommended class to use is?

    The session that you get from the module of the application is not a http session it's a server session. You cannot use any other class.

    • Where can I find which are the main stages of the life of the session and functions to manipulate? 1-2 examples of creation, destruction, making the session which expires after e.g. 10 minutes of user'sinactivity... would be happy if possible.

    The documentation is always a good starting point. The best description I know is from the book "Guide Oracle ADF developer real world ' by Jobinesh Purushothaman. If you google a bit you will find another description too. Don't know what you want to know about the creation and destruction of the sessions that you do yourself. To set the time-out setting for the http session, you can change the value of "session timeout" in the web xml file.

    Timo

  • Hi, I really need help... I can't find any broadcasting EBU-100/75, test your 1 KhZ, etc... I m going to do 15 masters short for Swedish broadcasting channel at night. -haha! and I can't find anything inside the first... I m I'm blind! Help, please! Vanle

    Hi, I really need help... I can't find any broadcasting EBU-100/75, test your 1 KhZ, etc... I m going to do 15 masters short for Swedish broadcasting channel at night. -haha! and I can't find anything inside the first... I m I'm blind! Help, please! Paris looks Jokum

    Bay3Bob - you are great! Thanxxx :-)

  • Test your troubleshooting skills 1

    This is supposed to be fun with a learning effect.

    I intend to publish a series of VMS screwed up and let guys I fix YOU.

    If you run and start the virtual machine, it welcomes you with this form
    http://sanbarrow.com/testyourskills/testyourskills1.png

    All you get is packed in a zip attached below

    The virtual machine may miss some files, damaged files... what ever - just ordinary madness that is also in real life.

    It has been produced with ESX, Workstation, Fusion or other - find yourself

    ___________________________________________________________

    Tricky-ness of this first case:

    hard =

    easy =.


    Tip: this may occur after failure of electricity or guest crash
    Note: the virtual computer can be restored without any loss of data

    If you are an experienced convenience store you should be able to solve this case in perhaps half an hour or less

    ___________________________________________________________

    I'll post how to solve this case next Friday
    Have fun


    Ulli


    Please reply to this message if you are interested in more of this

    Send an email with your solution to ulli arobase sanbarrow dot com if you want me to help or give advice
    Please use "Test your troubleshooting skills 1" in the header of the mail

    Solved in OS X with the merger, by a Mac user ;-)

    Do you want to email you?

  • Several digital test with labview cluster?

    Is it possible to make a numerical limit several test with the values of a cluster of a labview vi?

    So-called step "Multiple numerical limit", the data must be numeric. If the cluster already contains only numeric fields.

    Given that, I would throw the cluster within the module in a table (table Cluster). The downside of this is that all the fields of the table share the data type, so all are single or double or I32...

    Other solutions will not work with the default step type, but you can create your own type of step to accept a multiple similar to the digital cluster, which only accepts an array.

    Norbert

  • Test test test your tet

    This is a test, I'm trying to change my post

    Your ISP knows each site you visit. The gov ' t must have a prior reason to check the sites and the information that you enter, but it may require your permission. We have a function-not-Track, that you can use to indicate the sites not to follow you, but Web sites do not have to follow this exception. Read more about it in: How can I activate Do not track?

  • How to: free account developer to test your own iOS on iPhone application using Xcode 7.2.1

    The free Xcode 7.2.1 iOS Developer membership feature I'm trying, I have installed xcode 7.2.1 and tried to test self written objective c code on my own in iPhone 5 s ios9.0.2.

    The sequence of error occurs as follows:

    (1) no signing identity valid (certificate and private key pair) have been found.

    Xcode can try to solve this problem. This will reset your signature code and parameters of provisioning of recommended values and solve problems with the signature of the identities and provisioning profiles.

    I clicked on the button "deal" and

    2) clicked "ADD" an APPLE ID account 'sign using the Apple ID ". I sign in using exist before APPLE ID.

    (3) the error said: an unexpected error has occurred. Please try again.  If the problem persists, contact the support of the Apple Developer program. https://developer.Apple.com/support

    No signature found identity code: no valid signature identity (certificate and private key pair) have been found.

    (4) I repeat the above steps, but mistakes persist.

    After failed attempts, I tried the steps of Xcode 7.2.1 still 3 days later using Apple ID sign. I could create IOS developer cert for free using Xcode > Preferences > ADD apple ID.

    I was able to compile the code and to load an app on my own device. Here are a few observations try this developer account "Apple ID sign" free:

    (1) the need to activate the WiFi on my a device and connect to a network to check your application before can run the application. Cannot run app offline.

    (2) there is no debugging, stepping in/out plus. Only can run application without debugging.

    Does anyone have any other comments?

  • How to test your subject bar file

    Hey guys,.

    Yesterday, I presented my first app tablet with some difficulty. Firstly, I was not able to compile my code with the SDK 0.9.3 because it supports more "mobile applications", which is how my application was created. I then created my signed the key, but when it came time to package the application with the keys I have been unable to do with the command-line finally as a last resort before calling it a night I decided I would try package and sign my application through Flash Builder Burrito. It seems to work a bar and a bar.sign file has been created and no error is thrown.  I decided to create a zip of those and submit it for review.

    Today, I'm worried that my application might get rejected because it lacks an icon, there is not sign or he does not get properly packed by flex builder. So my question is possible for a) confirm that the app is sign? and (b) test of the bar folder with the Simulator.

    Thanks in advance for you help!

    Hey,.

    Welcome to the forums! If you have indeed the procedure of signing through the Flash Builder / Burrito app, there is a good chance she has no more. The process in Burrito is very misleading because it throws any errors that you may encounter. The signing and packaging must be made through command line. At the moment there is no other way. If you run problems, post on the forums and maybe we can help you with all of the errors. Good luck!

    Edit: here are some additional forum messages that may help shed more light on the question:

    Bug in Flash Builder - why the command line is required:

    http://supportforums.BlackBerry.com/T5/Tablet-OS-SDK-for-Adobe-Air/howto-sign-your-applications-from...

    How to check the content of your signed and this bar you can find inside:

    http://supportforums.BlackBerry.com/T5/Tablet-OS-SDK-for-Adobe-Air/howto-sign-your-applications-from...

    My discussion with the rundown of how to sign an application (many others available around forums):

    http://supportforums.BlackBerry.com/T5/Tablet-OS-SDK-for-Adobe-Air/useful-tip-package-images-via-com...

  • Problems with WebCam? YouCam allows to test your WebCam

    Software using YouCam to solve your Notesbook WebCam problems

    Problems with your computers webcam portable? You can use the YouCam software to solve problems with your webcam. It was really only a few questions, which can cause problems with webcam. Driver problems, bad video configuration and software issues. YouCam will be able to identify these two problems for you.

    Troubleshooting with YouCam


    First you want to make sure that all other applications are closed. Other applications can steal the priority of the YouCam software that could interrupt the troubleshooting. Then open the YouCam software. If there are problems with the WebCam, you will be alerted with an error message here.

     

    "Unable to connect to the video device" error:

    Hope this helps to solve many problems of webcam. Again, this is an informational message that should serve as a reference. If you have gone over these steps and are still problems please create a new thread and include your computer model, operating system, and any other information that would be helpful in resolving the issue.

    Thank you!
    Sean S

  • Test your skills of wiring



  • Test your troubleshooting skills 4

    If you manage this case you will see

    http://sanbarrow.com/testyourskills/testyourskills4.png

    Tips:

    The user says:
    «My boss will fire me if I can't do a virtual machine of the 2 virtual drives, he received from our sister speaks Suaheli company.»
    "I asked if it had additional information on where these VMDK but he told me: run them in player, Fusion or WS at the end of the day or make fire."

    Trickyness =

    OK, now I guess I knew what you were doing.

    Edit: Deleted by Ulli Solution

    André

  • Test your troubleshooting skills 3

    If you manage this case you will see

    http://sanbarrow.com/testyourskills/testyourskills3.png

    Tips:

    The user questioned on this matter says:
    "The first 10 million years were the worst and second 10 million years,
    they were also the worst. The third 10 million years I do quite enjoy.
    After that I went into a bit of a decline. »

    This virtual machine can be restored without any loss.
    There are two ways to attack this case - choose one easy

    Trickyness =

    Is there something more difficult available?

    This could be fixed easily with UltraEdit.

    André

  • Test your skills of toubleshooting 2

    It's just for fun

    If you manage to reproduce the VM you get this screen

    http://sanbarrow.com/testyourskills/testyourskills2.png

    Tip: there is no need to download anything, or if using hexeditors - just be inventive
    Note: the user who filed this corrupt VM says "oops - I deleted a file - or maybe two.

    If you pass it - post a screenshot with a score different then 08:12

    Please do not give evidence - that the solution is so trivial ;-)

    Trickyness =


    Once again, all you get is inside of the archive attached

    Sorry! didn't want to give anything... keep em coming, however.

  • How to write values to cluster of indicators (tank sliders)?

    I'm writing a table 1 d of values to their 8 sliders matching tank.

    So each element of the array is displayed as the value of the slider.

    How can I do this?

    This works if you view in a cluster of numeric values, but not the sliders.

    I also tried to write the table to the 'value' property of each of the sliders, but still doesn't seem to work.

    Any suggestions?

    001,

    How did you create the sliders? They are actaully the clusters of two elements, which appear to be identical cursors sitting on top of the other.

    This is probably why you meet your data of wiring to them so much trouble.  I suggest that you create a new cluster with standard cursors.  Then, you can use the table to primitive Cluster to move the data.

    Two caveats: 1. table to the default Cluster is 9 elements of the cluster regardless of the number of items in the table.  Pop - up on the release of cluster Terminal to change the number of items if necessary.

    2. you have apparently added items to the cluster inoperable.  The order of cluster is important if you want to get the data in the right places.

    In addition, it would be much easier for us to test your code if you included table 2D input data.  Put the data here and then change > use current default values. Then save.

    Lynn

  • Question to the Cluster of conductor

    Hi all

    Just need some ideas:

    We have a Cluster of conductor, some behind MCU and TMS. Booking is running on MSDS / conductor. All have SW-latest Versions.
    TMS can handle only a single conductor of the Cluster. Okay, all right.
    But what happened if this driver is down with scheduled conferences? Is it possible to send the reservation as soon as possible to the cluster of conductor a store there? Solutions or workarounds?

    Thank you very much!

    Sent by Cisco Support technique iPad App

    Hi Dirk,

    Welcome to Cisco Support Community!

    As you said correctly, when you have a cluster of conductor, TMS is not able to recognize all members of the cluster, as well as a conductor (usually the main one) will be managed and demand by TMS. If the driver fails, when a scheduled conference reached the moment to start, TMS will be able to push the Conference to the driver, so that the conference will fail.

    Unfortunately, right now, you don't have any what automatic method to push the Conference to an another counterpart of conductor in the cluster, however, as a workaround, you can manually push the Conference to another position of conductor in this method:

    • Raise your driver cluster normally according to the Cisco documentation
    • Add only the counterpart of principal conductor to TMS
    • Configure TMS to follow the system using the IP address instead of the MAC address. You can find this configuration in "system > Navigator ', tab 'connection '.
    • Configure your TMS or any server monitoring for you advice (by e-mail or by using any other method) when the conductor comes down
    • When you are told that the conductor is down, go to TMS in ' system > Navigator ', select the conductor, go to the "Connection" tab and change the IP address of you're the conductor, put the IP of another position of conductor in the cluster. So TMS will push the forthcoming conferences of the annex to this peer of conductor
    • When the principal driver is back, go to TMS and set the IP address of the back of a main conductor. So the next regular conferences will be pushed to the main driver.

    It is important to point out that, obviously, if one starts regular Conference right in time when the driver is down, before you change the IP in TMS, then this conference will fail. You will probably have to reschedule the Conference manually.

    Although this good method works very well for our customer, it is important to inform you that it is not an official Cisco solution (as I know). So I personally suggest you to test and certify yourself before appling to your environment. Personally, I don't like to suggest informal recommendations of Cisco, but I think it's something interesting to consider.

    Sorry for the delay in answering your question.  =)

    I hope this helps.

    Paulo Souza

    Please note the useful answers and do not forget to mark questions resolved as "responded."

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