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13

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 ...


10

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 ...


6

ssh'ing to a VM is no different than ssh'ing to any other system on the network. Log into one of the VM's, and type: ssh remote_username@remote_host remote_host should be the hostname of the machine you want to connect to. You could even use simply the ip of the host you want to connect to. This guide is pretty basic if you want to get some more info ...


4

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

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 ...


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

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

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 ...


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

It's totally fine to use both VMs and containers, especially in this kind of scenario. VMs provide a secure isolation layer that is both cheap and expensive: - it is cheap in labor, because you don't have to work very hard to achieve good security with VMs; - it is expensive in resources, because the overhead of VMs can be significant, especially for small ...


1

Can you connect to the DB with something like Oracle SQL developer? I would verify that you can hit the DB remotely first and then troubleshoot your C#. Could be drivers or not having the right driver (32 vs 64 bit).


1

You can use vSphere replication to replicate from one host to another. It is not only for cross-vSphere migrations. Veeam's Backup suite can do the same thing with a lot less complexity. So while the built-in vSphere replication product works, recovering from it is a bit of a pain. Veeam is very inexpensive for two hosts, so it's probably worth the ...


1

Then setup a terminal server for your users to work with. What you want to do is like multiple PCs using only one hard disk, which just can't work, at least in write mode.


1

The key to this mystery is the error you're getting from ping: sendmsg: No buffer space available. This means that packets aren't just being dropped somewhere, they're actually getting "clogged up" in the guest somewhere. This is, in a physical machine, an indication that the kernel driver and/or hardware are buggy; similarly, in a VM, it means you've got ...


1

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


1

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 ...



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