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-1

I'd recommend you to start with paravirtualization such as LXC / Vserver, install some containers play with them and then try to understand how it works. Without this knowledge i doubt you can do something. Check this link: https://linuxcontainers.org/


-2

This sounds quite worrying that you want to develop your own hypervisor and yet asking how a hypervisor works. Also why are you trying to re-invent the wheel when there are enterprise class hypervisors out there already?


1

You do not have to create an Image to do this. You need to copy the VHD to the new storage account and then create a "Disk" not an "Image" from it. Then you can use this Disk from the copied VHD blob to attach to your new VM as the OSDisk. An image allows you to create a template to deploy new VMs from and as you mention above, this is not what you want.


3

If you have resolvconf installed on your system it will manage /etc/resolv.conf for you. Anything you manually put into resolv.conf will be replaced eventually, which is why name servers need to be defined in /etc/network/interfaces or the interfaces.d directory. If you want to control resolv.conf manually remove the resolvconf package. Note: It is ...


1

The solution is to set Linux System Capabilites to allow raw socket on the host machine.


0

TL;DR version: reinstall iputils-ping I have seen online where it has been suggested to use chmod u+s $( which ping ); However this will permit the user to change the preload and flood. Which could result in a USER being able to Denial Of Service either your local machine or another machine or your network. I tried what @nabil-bourenane suggested, ...


2

It sounds like you're running into IO contention. There are a couple ways of fixing it: Separating the workloads. Put the testing on one set of disks and the VMs on the other. That way one won't interfere with the other. Nuke the problem with SSD. Solid-state is much more I/O friendly. If you can afford the space you need, this will make sure your I/O ...


4

It's a balance between price and performance. Mechanical SATA drives obviously have better prices but are in no way designed for such jobs, so for a serious business it's a no-go SAS protocol has enhanced features (for example queue re-ordering) that allow them to better manage I/O from multiple VMs and so they are much-more efficient (even with the same ...


0

I believe you are trying to setup the nameserver or NS record. That is why you are being prompted for 2 names. Instead of this do the following: Choose CNAME if you are choosing the subdomain (like www.foo.tk) and set it to abc.cloudapp.net. Choose A if you are choosing the naked domain (like foo.tk) and set it to the IP that abc.cloudapp.net points to.


-1

You are using name based virtual host, which means that your request must have a valid DNS name and not "12.34.56.78/site" Here is the relevant part from official document. Creating virtual host configurations on your Apache server does not magically cause DNS entries to be created for those host names. You must have the names in DNS, resolving to your IP ...


2

Regarding your question - yes, you will loose access for all machines within this physical host. Of course, it depends which component failed. If it is disk - it is kind of problem, if it motherboard - it is much easier. In general hardware recovery is easier as hypervisor is hardware-agnostic. At this point of time there are a lot of vendor specific ...


0

There could be many things that are off, like DNS, networking settings etc. A couple of MVP's created a WAP Wiki and OneNote that is a must read when you start implementing azure (pack) http://www.hyper-v.nu/archives/hvredevoort/2015/01/azure-pack-wiki-available-via-onenote/ Hope that provides some useful pointers. The official place for the ...


0

The Azure Site Recovery tools can also be used for one-way migrations from on-prem to Azure. http://azure.microsoft.com/en-us/services/site-recovery/ Each disk would be it's own VHD.


1

Changing the pool master won't take down the host or any of the VMs. It will cause a restart of the management service (XAPI) of all pool hosts, so that management access via Citrix XenCenter or CLI (xe commands) won't work for 10-30 seconds. Once the service is restarted, you can reconnect to the poolmaster or a slave via XenCenter (you'll be redirected to ...


14

The specifics depend on which exact virtualization solution you use, but the idea is that you have a virtual farm, where there are a number of physical hosts with several virtual machines each. You then use some of the efficiency you gained by not needing a physical host for every VM so that you have enough overhead left to cover in the case where a physical ...


11

All virtual servers running on a physical host will go offline if the host has any sort of failure. That said, most platforms offer a high-availability solution for a single VM. Other times a system is built with multiple nodes to prevent service disruption in the event that one node goes down. If two VM nodes make up a highly available service, it is ...


5

You are right with your assumption that if the physical machine fails also the VMs get unavailable. But openstack can take care of that and start the VMs of the failed physical server on a other server or you can use a hypervisor system which is already distributed, I think vsphere can do that. You should read the openstack documentation on HA for more ...


2

Assuming you're using Apache, create separate virtual host definitions for each "app". For example: <VirtualHost app1.arturo.com:80> ServerName app1.arturo.com DocumentRoot /var/www/sites/app1.arturo.com/public </VirtualHost> [...] <VirtualHost app5.arturo.com:80> ServerName app5.arturo.com DocumentRoot ...


2

The article you linked says a maximum of 2 vCPUs is supported on Hyper-V guests running WS2003, but there are no technical reasons blocking you from using more; you are already running a completely unsupported configuration (WS2003 on Azure), so support is probably the least of your concerns. However, in order to actually use more than 4 CPUs (regardless if ...


0

It looks like you're searching for "snapback": https://github.com/markround/XenServer-snapshot-backup . It's a shell script launched by cron on the cluster pool-master and, based on "custom fields" defined on VMs, decide what to backup (xva_backup defined), when to backup (xva_backup=daily|weekly) and how many backup to keep alive (xva_retain). Backups, as ...


1

Have not seen a snapshot function in the new portal either. The preview portal is still in development, so I would have an eye on it. In the meantime you can use PowerShell as a workaround. Here are two PowerShell samples: a) how to make a snapshot and b) how to make a blob copy. a) how to make a snapshot ...


1

You can delete the instance without deleting the boot disk. Attach and mount the disk to any other running VM make the modification and than create an instance with this disk. You can refer to this link for steps. Make sure to take the snapshot of the disk before deleting the instance, which will make sure you have a disk backup in case if anything goes ...


0

Not many ideas about Resource Group, but in normal condition, we can use PowerShell to backup VM. I think you can try it.


0

in Azure, all IaaS VM's are inside a DNS container (cloud service) Azure automatically directs traffic to the correct location. Have a look at this MVA course and get back to me if you need any further advice. https://www.microsoftvirtualacademy.com/en-US/training-courses/microsoft-azure-iaas-deep-dive-jump-start-8287 Enjoy and don't forget to mark as ...


1

This is what the Remote desktop connection broker is for, to seamlessly allocate session hosts to user.


2

Under the networkinfo column I got the following "localhost:" instead of getting the host ip, mac, et.. so what is causing the NetworkInfo to not show the actual network info ? The NetworkingInfo property is actually an object of the VMHostNetworkInfo type, who's string representation is the host's 'Name' and 'Domain' glued together with a colon. This ...


-1

Check your /etc/php.ini in error handling. Changed mine be identical to the config.yaml file and it worked. Also try setting chmod 777for your location.


0

Do an ls -al / you will see the directories are still there. Unless you have setup the install to move these mount points to separate mount points they should be still on the main partition. You can compare /etc/fstab fdisk -l and df -h to look at mount points and their logical disks. Typical setups of vmware guests only have one drive where physical ...



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