vCenter 6 web gui - host isolation response

Similar Questions

• Host isolation response Question

  So, there were a few questions recently in our company on the host isolation response works in vCenter server 4.1.  Given the descriptions on the options available to the virtual machine power on or at the bottom of the current virtual machine, how HA determines that an isolated host is really isolated and running compared to completely failed (offline)?

  Can someone explain in detail a bit more technical that what the VMware article pages kb explain works host isolation response?

  Reading of how insulation host configurations can be defined, if you set the parameters of insulation "leave the virtual machine running", in case of total failure of host (offline) the other cluster hosts not to try the virtual machine online on another host?  And it is recommended to set the response of isolation to "turn off" so that the other hosts in the cluster can bring the virtual machine online?

  I still don't understand how a host can be determined as 'remote' from the 'offline '.  Isolation is simply the communications network have failed and are virtual machine always happily along on the isolated host.  A host simply default and past in offline mode (power failure Physics for example) is a completely different scenario.  Locks are not released correctly (not be able to any type of response of isolation configuration) and the virtual machine is not running on the host offline

  To the HA cluster if communication is lost to a node of the cluster assumes that the node has failed and will be Jean-Marie to restart the virtual machine on nodes in the cluster of rremaining - locks are constantly updated so if the host is not responding is rather isolated that failed he'll again be refreshing locks on the VMDK files. and virtual machines does not start - it is this feature which allows the AP to work - because with what you describe HA would never--work

  In the scenario were the host disconnects and the virtual machine is not running and the response of isolation is set to "leave the virtual machine running" how other hosts in the cluster determin the host is really low?

  The other guests guess always the isolated host is really down and try to restart the VMs - isloated host system is the machine that will follow response of isolation parameters - either the vms on power or powered by letting off the coast

• The host Isolation response

  Hello

  Can I know what is "host isolation response '.

  Thank you

  Prashant

  In short: ESXi hosts running in a HA cluster communicate with each other by sending heartbeats. If a host does not receive the heartbeat of the other hosts more and also cannot each address isolation it triggers the response of isolation.

  For more information on HA, please take a look at http://www.yellow-bricks.com/vmware-high-availability-deepdiv/

  André

• The host Isolation response / loss of iSCSI connectivity - what if scenario

  The other thread on automatic shutdown made me think at our facility:

  1. when our building lost power, we lose cooling and networking, but remains on our servers/UPS systems, as they are connected to a backup generator.

  2 Yah, so, it's not good, cooling is lost, and the servers are will heat up, then we must begin to stop them until the coolant has been restored.

  Our 2 ESX systems connect to our SAN via iSCSI - with the lost power, the SAN and the ESX servers are no longer speaks, so I turned off our ESX servers, until the coolant has been restored, as no negative consequences on the correct virtual machines?

  With the connection of networking\iSCSI lost between ESX servers and SAN, that State will be our being for most Windows virtual machines?  They're going to be trashed?  Or ESX has some kind of verification in place for this type of ailment?

  In our current situation, what would be the recommended host Isolation response parameter?

  Thanks for any idea,

  Chad

  Our 2 ESX systems connect to our SAN via iSCSI - with the lost power, the SAN and the ESX servers are no longer speaks, so I turned off our ESX servers, until the coolant has been restored, as no negative consequences on the correct virtual machines?

  It shouldn't - but this will depend on all wht that the VM, the operating system and the application were doing at the time of the accident-

  With the connection of networking\iSCSI lost between ESX servers and SAN, that State will be our being for most Windows virtual machines? They're going to be trashed? Or ESX has some kind of verification in place for this type of ailment?

  ESX does not check this condition - from your virtual machines is on the iSCSI SAN you will find crashed.

  If you find this or any other answer useful please consider awarding points marking the answer correct or useful

• Host Isolation response - VM Shutdown / Restart

  Gents,

  I couldn't find answer to my question myself so maybe you can help me.

  Let's say we have cluster HA VSphere 4.1 with the default settings. On hosts loses the connection to the network and all the HA primary agents start 15 sec count down. The host of problem also begins his 15 sec timer and after 12 seconds, it tries to ping the default gateway and does not answer. So he decides that he is isolated. If the network connection is not restored within 15 s primary HA officers decide that host problems failed and try to restart the virtual machines, but they can do VMS files are always locked by host problem which just initiated the process of virtual machine downtime after 15 s time of isolation.

  So my question is how that VMs are restarted then if they are not be restarted the first time? Primary HA officers constantly try to restart on alternate hosts?  They try always to restart virtual machines even if the host of the problem can't stop for 300 s and then power off? This missing part of information is really boring

  Would be very grateful for any useful information.

  http://www.yellow-bricks.com/2010/06/30/How-does-das-maxvmrestartcount-work/

  All this kind of thing is also explained by the way in my next book! Should be available through my blog in a week.

  Duncan

  VMware communities user moderator | VCDX

  -

• HA retry time host isolation?

  Suppose the network breaks for some a host and host isolation response is stopped. After 12 seconds he will make his test of isolation, then will launch to stop the virtual machines running on the host.

  Other hosts will detect the host missing after 15 seconds and try to start them. However, because virtual machines very, probably not even to stop the locks on files are in place. Let's say that according to the workload inside the guest, it will take all of 20 seconds to several minutes to make a gradual stop. (I know there is a sunset that goes off after 5 minutes).

  But my question is, how long and how often other hosts will try to restart the VMs system which vmdk files become available one after the other?

  Duncan Epping describes the behavior of the http://www.yellow-bricks.com/2010/06/30/how-does-das-maxvmrestartcount-work/ reboot

  André

• Several Host Isolation

  Imagine a scenario where we had a HA of four nodes cluster spread on a campus with two nodes in one place and two in the other. What would the host isolation response if the network connection between the two sites has been lost?

  If we lose a host then the TI is known to be isolated after 12 years and then failed aftet 15s. If we lose two, however, nobody is isolated and I am assuming that nothing happens.

  Now; Imagine that we have warehouses of data which are all shared, but some are in one site and some are in the other. Guests running on local data warehouses would be unaffected. Guests who are running on data warehouses remote fails. The question is: what will happen to the hosts failed?

  Thank you

  Warren Barnes

  Before you answer this in detail, I want to make sure I'm clear on my assumptions:

  1. There are 4 hosts in the cluster, two on each side of the stretch. If this is the case, then all 4 hosts are primary. (The first 5 guests in any cluster are primary, so you get only secondary when there are 6 or more hosts).

  2 If the network fails between the two sites, storage will be split-brain as well? I guess that Yes, based on one of your comments.

  If, in view of the #1 site hosts A and B, and site #2 a hosts C a D...

  If, after the split between site 1 and 2, and B can still heart rhythm with each other, and C and D can pulse between them then there is no answer tried insulation. Answers insulation kick only in when a host can not with any of the other primitives of the heart rate, and it can also ping the address of isolation (usually the gateway (s)) for networks that host is on.

  So what happens is that A & B site 1 to conclude that C & D at site 2 have failed. And vice versa. A and B will try to power - on the virtual machines that are running on C and D, even for C & D - they will try and power on virtual machines that have been on A and b. Now, because the storage of some virtual machines can be found at site 1 and storage other virtual machines are at site 2, some of the power-ons may fail because the storage is not accessible. But as A & B will attempt to power on the set of the VMS C & D and C & D will attempt to power on the set of virtual machines of A & B (that means that admission control allows all of these power-ons) then each VM will end up under tension correctly on each site 1 or site 2.

  Now for the ugly part - if any of the VMS to site 1 lost their storage in the score, or vice versa, then the vmware-vmx process who represent these virtual machines always operate on one or more hosts on the side of the partition that has lost the storage and there is now a process vmware-vmx representative the same virtual machine running on a host across the partition that has now acquired a lock on this VM. None of this is a problem until the partition joined. This is so the behavior described by Elisha happens - that is to say the virtual machine appears to bounce back between the two hosts until the answer to the question on the lock lost by pointing the VC client directly to the host. And as he pointed out, the question will be auto-répondu by VC to vSphere 4.0 U2 and above.

  -Ron

• What should I do on vCenter vSphere Web Client after you change the host root password?

  Hello

  When we implemented vCenter our Organization, we used a regular password to the account 'root' on each ESXi host.

  So, I installed vCenter and added the hosts on it to manage.

  When I added them, they've asked for the root password power connect.

  Ok. Everything was fine.

  Now, we want to change the password to root for each ESXi host.

  My question is: what should I do to make sure that vCenter will always be able to connect to the ESXi hosts, because the account used to connect the first time change his password?

  My question is: what should I do to make sure that vCenter will always be able to connect to the ESXi hosts, because the account used to connect the first time change his password?

  Nothing, after the host is added to vCenter, a user named vpxuser is created automatically on the ESXi host and vCenter uses this user to connect and manage the host.

• vCenter Appliance Web Configuration of Client SSO error

  Currently have a vSphere 4.1 with two hosts ESXi environment.  vCenter is on a VM dediated on a single host.

  I'm moving to 5.1 and have chosen to deploy the unit vCenter instead of upgrading my VM.  A through the deployment and installation of the device through the web GUI.  Everything seemed to have configured correctly (DB, SSO, AD auth, etc.).  This is where it gets weird.

  I can access the vCenter via web client uses Windows authentication.  By using the same user credentials in the local client on my computer, it says I don't have permission.  In the web client, when I go to Administration-> Sign-On and discovery-> Configuration, I get an error on any tab, I selected:

  Error: com.vmware.vim.binding.sso.fault.InvalidCredentials:

  inherited from com.vmware.vim.binding.vmodl.fault.SecurityError:

  inherited from com.vmware.vim.binding.sso.fault.InvalidCredentials

  I'm about to give up and just upgrade my current vCenter, but I like the idea of the dedicated device.  I can't find any documentation on this error, or what I'm doing wrong.  It is very difficult to find documentation on the device.

  Thoughts? v

  Well, I can't tell you how to solve this problem, but maybe Kendrick Coleman 5.1 vSphere vCenter Virtual Appliance and vSphere Client video tutorial Web series will help you to successfully deploy the vCenter Server Appliance. At least she helped me to solve some problems I had with the first installations.

  André

• The proSafe (JGS524E + GS116E) Switches: Configuration Management Web GUI in VLAN specific

  Hello

  I use a JGS524E and a GS116E. The two are connected via a 802. 1 q uplink with all defined VLANS in him.

  A 802. 1 q other interfaces goes to a pfsense firewall, which serves as a router and dhcp server for each VLAN that I use.

  How can I configure the switches plug are in one VLAN specific and get his IP address of the dhcp server in this VLAN?

  At present, it seems to be random access: it is not predictable that range from intellectual property, it takes its IP configuration via dhcp...

  How management function works internally?

  Thank you

  Markus

  Hello

  Thank you. I tried it out, but the behavior seems to be a little different:

  I configured a static IP address for the switch (10.1.0.13 / 24). I have access to the switch web gui via the ip address of the host of a host directly connected (connected via a trunk port, where I put 1 VLAN on the trunk), but it is all the same, what VLAN that I use:

  When it is connected to the VLAN 1 I have access, but also through 10 VLANS, VLAN 20 and so forth (assumed, I configure my computer appropriate staticly in the IP network, for example 10.1.0.20 / 24). So it seems not be limited only to the VLAN 1. You have access to each vlan, only the IP configuration must be in the same network.

  I'm not sure, how it behaves when cascading the two switches, I have not tried.

  If this information can be useful for other users with the same question about this switching product line.

  For me, this behavior is not very well implemented from my point of view. For security reasons, you must limit access to the administration, for example by allowing access from a specific hardware port or a vlan. With the effective implementation, centralized management for a cascade topology is not easy to set up, perhaps because the behavior is not very clear and not documented in the manuals.

  Mentioned on the edge: there is no available TLS/SSL encryption when accessing the web gui (not https). So the password is transmitted in clear text... not a very good idea, I think.

  Thanks a lot for your help.

  Best regards

  markusd112

• vSphere Essentials 5 and vCenter Essentials - cannot add host - vMotion

  I would like to know how to add a host to vCenter Essentials for vSphere essentials.

  We bought vSphere Essentials and Essentials vCenter to improve our existing for Vsphere 4.1 Essentials environment.  Everything went well with the update on the host computer.  vSphere and vCenter allocated through the vSphere client license keys.  We installed vCenter and web client on a 2008 Server VM on the esxi host. The host has a number of existing virtual machines.  When attempting to add a host after have created the data center must be of VMotion.

  Must the esxi host be empty when adding to vCenter essential?

  Thank you.

  It sounds like you administering hosts in the mode of assessment so far and I tried some of the Enterprise Plus features! The Essentials Kit includes not vMotion (only Essentials more done) then you should remove the port vMotion group - if there is one - in the virtual network configuration to make the edition of Essentials-compatible host.

  André

• VSphere from VMware vCenter Server Web Access from the Internet

  I tested VMware vSphere (ESX 4) and tried to connect to the internet for the Web Admin Access VM only.  I can connect the vCenter Server (on Windows) http Web Access features and manage the configuration of all virtual machines. But when I try to connect to an actual vm via MKS, I get an error MKS as ' unable to connect to the MKS: unable to connect to the xxx.xxx.xxx.xxx:902 server.»  The xxx.xxx.xxx.xxx is the IP address of the ESX Server HOST and not the Server vCenter (which administers the host).   I have ports 80, 443, 902 and 903, on the firewall, open to point to the server vCenter Server.  When I'm on the LAN, I can do everything without a problem. Its only when I try to connect directly from the internet through our firewall I get the above error.

  Someone at - it suggestions?

  Andrej770,

  vCenter Server transfers you to the ESX host hosting the virtual machine, and the remote console runs on port 902.

  You want to go directly to the ESX host on port 902 through the firewall to connect to the Virtual Machine console.

  You want to see the pages "Guide de Configuration ESX" 146 for more information.

  http://www.VMware.com/PDF/vSphere4/R40/vsp_40_esx_server_config.PDF

  If you have found this or other useful information, please consider awarding points to 'Correct' or 'useful '.

• Reset the Web GUI on the M600 iDRAC

  Hello

  I have problems of access to the iDRAC web gui on a couple of blades M600 (needed to get the console and re - install the operating system).

  I read on Google that racadm racreset running can solve the problem, but this seems to be only available on of m610?

  When I ssh into the M600 blade I gives me a prompt SMASH CLP Console (v1.08) and can not find everything related to actually reset the interface itself idrac.

  Is it still possible on a M600?  Otherwise, how can we reset the iDRAC interface?  It does not fundamentally on port 80 - unlike our other blades, also M600s.

  Thank you very much in advance for any pointers or direction.

  Thank you

  SoC

  Rob,

  An option to rest iDRAC on M600 is with the CMC. You can connect to the CMC and perform iDRAC reset page "Overview-> troubleshooting-> Reset chassis components. Select iDRAC reset for the corresponding housing option. You can also do CMC Racadm. Run "racadm racreset m - Server -" of SSH or using remote racadm and CMC IP.

  What iDRAC firmware you have on M600? 1.65 is the last FW for iDRAC M600. If you do not have this FW on iDRAC can you update and check the same. You can download the same from

  www.Dell.com/.../PowerEdge-M600

• Force10 S60 - activation Web GUI

  Does anyone know how to activate/access web GUI on a Force10 S60?  I have the switch set to the point that I can ping from a client, but I can't seem to get access from a web browser.  The help files have not gave me so much about the issue, so I hope someone here can point me in the right direction.

  Thanks in advance,

  -Michael

  Hi Michael,

  There is not an on the S60 web management interface, it's only of CLI. The commands that worked for the S50 aren't in the configuration for the S60 guide. http://downloads.Dell.com/manuals/all-products/esuprt_ser_stor_net/esuprt_networking/esuprt_net_fxd_prt_swtchs/Force10-s60_Reference%20Guide5_en-us.PDF

  http://downloads.Dell.com/manuals/all-products/esuprt_ser_stor_net/esuprt_networking/esuprt_net_fxd_prt_swtchs/Force10-s60_Reference%20Guide6_en-us.PDF

• Cannot access the ISE-3395-K9 CISCO Web GUI

  Hello

  I can't access the ISE-3395-K9 web gui interface concert 0 with ip address is 192.168.1.10.  I put the ip address of my labtop to 192.168.1.20 and could ping back but am still not able to access them through a direct connection between my labtop to concert interface 0 using one of the supported web browsers.  Any help would be greatly appreciated.

  It is possible that the GUI was configured to restrict access to only certain IPs / subnets. If 192.168.1.x isn't one of them, then you will have access.

  Are you able to connect to the shell via SSH? If so, you should check and confirm that all associated ISE services run by running the following command:

  show the application status ise

  Thank you for evaluating useful messages!