Both VMs and containers can help get the most out of available computer hardware and software resources. Containers are the new kids on the block, but VMs have been, and continue to be, tremendously popular in data centers of all sizes.
If you’re looking for the best solution for running your own services in the cloud you need to understand these virtualization technologies, how they compare to each other, and what are the best uses for each. Here’s our quick introduction.
Basic Definitions — VMs and Containers¶
What are VMs?¶
A virtual machine (VM) is an emulation of a computer system. Put simply, it makes it possible to run what appear to be many separate computers on hardware that is actually one computer.
The operating systems (OS) and their applications share hardware resources from a single host server, or from a pool of host servers. Each VM requires its own underlying OS, and the hardware is virtualized. A hypervisor, or a virtual machine monitor, is software, firmware, or hardware that creates and runs VMs. It sits between the hardware and the virtual machine and is necessary to virtualize the server.
Since the advent of affordable virtualization technology and cloud computing services, IT departments large and small have embraced virtual machines (VMs) as a way to lower costs and increase efficiencies.
VMs, however, can take up a lot of system resources. Each VM runs not just a full copy of an operating system, but a virtual copy of all the hardware that the operating system needs to run. This quickly adds up to a lot of RAM and CPU cycles. That’s still economical compared to running separate actual computers, but for some applications it can be overkill, which led to the development of containers.
Benefits of VMs¶
- All OS resources available to apps
- Established management tools
- Established security tools
- Better known security controls
What are Containers?¶
With containers, instead of virtualizing the underlying computer like a virtual machine (VM), just the OS is virtualized.
Containers sit on top of a physical server and its host OS — typically Linux or Windows. Each container shares the host OS kernel and, usually, the binaries and libraries, too. Shared components are read-only. Sharing OS resources such as libraries significantly reduces the need to reproduce the operating system code, and means that a server can run multiple workloads with a single operating system installation. Containers are thus exceptionally light — they are only megabytes in size and take just seconds to start. Compared to containers, VMs take minutes to run and are an order of magnitude larger than an equivalent container.
In contrast to VMs, all that a container requires is enough of an operating system, supporting programs and libraries, and system resources to run a specific program. What this means in practice is you can put two to three times as many as applications on a single server with containers than you can with a VM. In addition, with containers you can create a portable, consistent operating environment for development, testing, and deployment.
Types of Containers¶
Linux Containers (LXC) — The original Linux container technology is Linux Containers, commonly known as LXC. LXC is a Linux operating system level virtualization method for running multiple isolated Linux systems on a single host.
Docker — Docker started as a project to build single-application LXC containers, introducing several changes to LXC that make containers more portable and flexible to use. It later morphed into its own container runtime environment. At a high level, Docker is a Linux utility that can efficiently create, ship, and run containers.
Benefits of Containers¶
- Reduced IT management resources
- Reduced size of snapshots
- Quicker spinning up apps
- Reduced & simplified security updates
- Less code to transfer, migrate, upload workloads
Uses for VMs vs Uses for Containers¶
Both containers and VMs have benefits and drawbacks, and the ultimate decision will depend on your specific needs, but there are some general rules of thumb.
- VMs are a better choice for running apps that require all of the operating system’s resources and functionality when you need to run multiple applications on servers, or have a wide variety of operating systems to manage.
- Containers are a better choice when your biggest priority is maximizing the number of applications running on a minimal number of servers.
|What’s the Diff: VMs vs Containers|
|Limited performance||Native performance|
|Each VM runs in its own OS||All containers share the host OS|
|Hardware-level virtualization||OS virtualization|
|Startup time in minutes||Startup time in milliseconds|
|Allocates required memory||Requires less memory space|
|Fully isolated and hence more secure||Process-level isolation, possibly less|
For most, the ideal setup is likely to include both. With the current state of virtualization technology, the flexibility of VMs and the minimal resource requirements of containers work together to provide environments with maximum functionality.
If your organization is running a large number of instances of the same operating system, then you should look into whether containers are a good fit. They just might save you significant time and money over VMs.
Are you Using VMs, Containers, or Both?¶
We will explore this topic in greater depth in subsequent posts. If you are using VMs or containers, we’d love to hear from you about what you’re using and how you’re using them.
Currently TUNTEX using BOTH technology, for example all standalone app OS base dependent are running on VM ( HSBC , VM_Matrix, Addon BC, ELK/SIEM/IDS, IT Inventory , etc)
And app/services running on docker ( mysql slave for replication, Remote Access Gateway, Collabora server, Onlyoffice Server etc )
This are the MAIN GOAL of IT TUNTEX DIV is to going CLOUD which are resillient and redundant
How To Undertake Work From Home In The Current Coronavirus Crisis?
The ongoing international pandemic regarding Coronavirus has made it very clear how important it is to consider remote work culture for Tuntex businesses, especially for Office Department. Due to the Coronavirus pandemic, presently, most of the companies are accelerating remote work.
Though there are various conjectures around the world concerning productivity loss when employees work from home. And now, because of the Coronavirus pandemic, these myths are becoming even louder and causing quite a ruckus.
The biggest challenge that companies and individuals face with remote work is to judge productivity remotely. Fortunately, Tuntex IT infrastructure is ready with remote work, brings all the solutions to such problems;
- All data Files Storage on the Cloud/Fileserver can access from home and everywhere
- Remote access from home to any devices/application/system at Tuntex’s Office with Tuntex Remote Web: https://pttuntex.com/bd/#/
- Cloud storage and sharing: https://cloud.pttuntex.com/
- Collaboration Files with ONLYOFFICE
- And many more…. As per your request.
Some of Tuntex’s “mobile users” (e.g (1) A smartphone or tablet user. (2) A traveling user with a laptop computer) had done work from home before the corona pandemic, such as: Sample department users, Planning department users and MD department users.
We just have to install the software on the laptop or tablet or PC or any device that he or she’s going to use while working from home. Can install on mobile phone too. One of the biggest advantages of this productivity measuring tool that makes it perfect-fit for mobile user/employee.
Cloud mobile will facilitate Tuntex employee/our workload anytime and anywhere especially if we are working from home.
Download Nextcloud App first, run the app and login using your cloud account. Next, download and install Nexcloud talk app. It’s for chat or video conference call and sharing screen.
- Anytime and anywhere as long as you are connected to the internet you could work from home. It will connecting your device to the email and Tuntex cloud data storage, sharing and collaborate files: https://cloud.pttuntex.com/login Sign in with your cloud account/authority, it will show your department/group data storage, sharing files and collaborate.
- Make sure save all your workload on the cloud/fileserver.
- If You need to access/use an application such as: GGM App, Addon App, VM app, Sample Tracking app, Workflow/Accounting App. Send your email request to: email@example.com
- We will provide the access to you by. Tuntex Remote Web base: https://pttuntex.com/bd/#/
- How to connect WiFi/internet at home? User can use his/her cellphone to tether/hotspot, connecting the laptop. So I think there is no issue about home wifi/internet connection at home because now everyone has a cellphone.
The most valuable system is Redmine, it’s implemented on IT Division. All employee work can submit their project and the manager can monitoring all their work on the system: https://pttuntex.com/issues
This is the modern work monitoring system. It could implement in each department with user Matrix role and permission. You also get detailed report analysis of your employee’s department activities in the form of graphs and charts. So, you can simply understand the productivity metrics in the first place. Besides this, this software is a cloud-based asset. Hence, there’s no need to concern about storage issues. Your all data gets saved on the cloud.
So, if you’re facing productivity and work from home staff monitoring issues because of the recent outburst of COVID-19, then it can be a savior for Tuntex.
Without a doubt, the smooth functioning of companies has gotten shattered due to the recent chaos of Coronavirus. Tuntex IT division has provided.
Tuntex-SYS IT Div Updated 3/21/2020
Malware Defined, Explained, and Explored
The term malware is a contraction of malicious software. Put simply, malware is any piece of software that was written with the intent of damaging devices, stealing data, and generally causing a mess. Viruses, Trojans, spyware, and ransomware are among the different kinds of malware.
Malware is often created by teams of hackers: usually, they’re just looking to make money, either by spreading the malware themselves or selling it to the highest bidder on the Dark Web. However, there can be other reasons for creating malware too — it can be used as a tool for protest, a way to test security, or even as weapons of war between governments.
But no matter why or how malware comes to be, it’s always bad news when it winds up on your PC. Fortunately, that’s what we’re here to prevent
What does malware do?
All kinds of things. It’s a very broad category, and what malware does or how malware works changes from file to file. The following is a list of common types of malware, but it's hardly exhaustive:
- Virus: Like their biological namesakes, viruses attach themselves to clean files and infect other clean files. They can spread uncontrollably, damaging a system’s core functionality and deleting or corrupting files. They usually appear as an executable file (.exe).
- Trojans: This kind of malware disguises itself as legitimate software, or is hidden in legitimate software that has been tampered with. It tends to act discreetly and create backdoors in your security to let other malware in.
- Spyware: No surprise here — spyware is malware designed to spy on you. It hides in the background and takes notes on what you do online, including your passwords, credit card numbers, surfing habits, and more.
- Worms: Worms infect entire networks of devices, either local or across the internet, by using network interfaces. It uses each consecutively infected machine to infect others.
- Ransomware: This kind of malware typically locks down your computer and your files, and threatens to erase everything unless you pay a ransom.
- Adware: Though not always malicious in nature, aggressive advertising software can undermine your security just to serve you ads — which can give other malware an easy way in. Plus, let’s face it: pop-ups are really annoying.
- Botnets: Botnets are networks of infected computers that are made to work together under the control of an attacker.
How to protect against malware?
When it comes to malware, prevention is better than a cure. Fortunately, there are some common sense, easy behaviors that minimize your chances of running into any nasty software.
- Don’t trust strangers online! “Social engineering”, which can include strange emails, abrupt alerts, fake profiles, and curiosity-tickling offers, are the #1 method of delivering malware. If you don’t know exactly what it is, don’t click on it.
- Double-check your downloads! From pirating sites to official storefronts, malware is often lurking just around the corner. So before downloading, always double-check that the provider is trustworthy by carefully reading reviews and comments.
- Get an ad-blocker! Malvertising – where hackers use infected banners or pop-up ads to infect your device – is on the rise. You can’t know which ads are bad: so it’s safer to just block them all with a reliable ad-blocker.
- Careful where you browse! Malware can be found anywhere, but it’s most common in websites with poor backend security, like small, local websites. If you stick to large, reputable sites, you severely reduce your risk of encountering malware.
Unfortunately, even if you follow the above advice to the letter, you might still get infected with malware: hackers have found ways to sneak their viruses into every corner of the web. For real security, you need to combine healthy online habits with powerful infrastructure ( IDS/HIDS,WebProxy,Mailserver Content Filter and Antivirus, DNS Blackhole/Blacklist, strict user acls ) and the most basic is reliable anti-malware software, which detects and stops malware before it infects your PC, Mac, or mobile device.
Tuntex-SYS IT Div Updated 4/24/2020
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