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Diffstat (limited to 'virtualization')
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| -rw-r--r-- | virtualization/virtual_machines.md | 41 | ||||
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diff --git a/virtualization/hw1.pdf b/virtualization/hw1.pdf Binary files differdeleted file mode 100644 index 00d84a4..0000000 --- a/virtualization/hw1.pdf +++ /dev/null diff --git a/virtualization/img/htop.png b/virtualization/img/htop.png Binary files differdeleted file mode 100644 index 880befa..0000000 --- a/virtualization/img/htop.png +++ /dev/null diff --git a/virtualization/img/no_virtualization.png b/virtualization/img/no_virtualization.png Binary files differdeleted file mode 100644 index 2322456..0000000 --- a/virtualization/img/no_virtualization.png +++ /dev/null diff --git a/virtualization/virtual_machines.md b/virtualization/virtual_machines.md deleted file mode 100644 index c6d3e12..0000000 --- a/virtualization/virtual_machines.md +++ /dev/null @@ -1,41 +0,0 @@ -* Elizabeth Hunt (A02364151), MATH 4610 - -## Virtual Machines - -**Question 1** - -Run the Linux OS as a virtual machine, or run the application in a containerized Linux environment (which -is the same abstraction). - -**Question 2** - -A native system virtual machine has dedicated hardware to run the hypervisor, while a hosted system -virtual machine runs a hypervisor as a process in the operating system. - -**Question 3** - -A virtual machine hosts an entire operating system and requires users to perform configuration if they -want to run an application, whereas a Virtual Appliance is built to provide an easy plug-and-play virtual -machine image built to run some specific software stack. - -**Question 4** - -In a large application sense, containerizing services into their own virtual machines allows for easier -replication, scaling, and networking. Instead of running several smaller servers, one large server can -host several applications in parallel. This provides a good seperation of concern. And, if one service -goes down, the whole system does not go down with it. - -Locally, it can help in development when targeting another operating system. Virtual machines can be -used to verify builds without installing a whole other operating system. - -**Question 5** - -A virtual machine monitor is just another term for a hypervisor, so, see question 2. - -**Question 6** - -The three components of a virtual machine are: - -1. The host -2. The virtualization layer -3. The guest diff --git a/virtualization/virtualization.md b/virtualization/virtualization.md deleted file mode 100644 index 4d03637..0000000 --- a/virtualization/virtualization.md +++ /dev/null @@ -1,103 +0,0 @@ -## Virtualization - -**Question 1** - -I use an Apple Silicon Mac which is based on the ARM architecture - so it's necessary to use -[Multipass](https://multipass.run/), as native virtualization is _not available to us_. - - - -**Question 2** - -One of the downsides of running a virtual machine, as opposed to a hosted virtual instance, is that local -resources are used. On a laptop especially, this increases power draw, draining the battery. Additionally, -the security of mind provided by "faster disaster recovery", as discussed in the article, is not as -necessary for consumer applications on personal machines as servers. Finally, virtual machines are -inherently slower in compute due to general overhead. - -**Question 3** - - - -**Question 4** - -In a large application sense, containerizing services into their own virtual machines allows for easier -replication, scaling, and networking. Instead of running several smaller servers, one large server can -host several applications in parallel. - -Locally, it can help in development when targeting another operating system. Virtual machines can be -used to verify builds without installing a whole other operating system. - -**Question 5** - -A native system virtual machine has dedicated hardware to run the hypervisor, while a hosted system -virtual machine runs a hypervisor as a process in the operating system. - -**Question 6** - -1. Easier networking between "servers" -2. Efficient resource use - -**Question 7** - -A Virtual Appliance is built to provide an easy plug-and-play virtual machine image built to run some -specific software stack. - -**Question 8** - -A Virtual Appliance would be desirable to eliminate maintenance and configuration overhead when running an -application. In my own experience, I've used a form of virtual appliances - "Docker Containers", to easily -spin up multiple versions of small services at work. - -**Question 9** What are 2 benefits of Virtualization? - -See question 6. - -**Question 10** - -See question 4. - -**Question 11** - -See question 8. - -**Question 12** What are the three main types of virtualization? - -1. Full virtualization -2. Para virtualization -3. OS-level virtualization - -**Question 13** What you should know about virtualization? - -How to create a virtual machine, and maintain it. - -**Question 14** What is the weakness of virtualization? - -Inherent overhead in all system operations. - -**Question 15** What are the six areas of virtualization? - -Source: [HiTechNectar](https://www.hitechnectar.com/blogs/virtualization-types) - -1. Application - run individual applications in a seperate environment than a host OS -2. Data - abstract exact location and formatting information away from retrieval of data -3. Desktop - hosts a desktop environment virtually on another machine (reminds me of mainframes). -4. Network - physical networking tools are abstracted into software resources -5. Server - division of a server into multiple guest operating systems -6. Storage - abstraction over multiple storage arrays into a single pool - -**Question 16** What is the biggest challenge in virtualization? - -Resource distribution is a big one; it's difficult to keep track of several resources on a host machine -and ensure a Virtual Machine accesses them correctly. - -**Question 17** What is the risk of using virtualization? - -The biggest risk of using virtualization is sandbox escape vulnerabilities. Although mostly research and -proof-of-concept, highly skilled engineers can theoretically craft exploits to escape the sandbox of the -VM and directly mess with the host operating system. - -**Question 18** - -When (question 17) is trusted; sandboxing. Virtualization should supply no access to resources within the -host operating system. |
