Setting up Your Ideal Web Development Environment With Plesk Essentials

Morning beverage ready. Mail and calendar checked. Daily meeting with the team done – It’s time to start your engines and crack on with your project. If you’re familiar with this sequence, it’s because you’re also immersed in the web developer’s everyday routine.

Carrying out your daily tasks might be an easy-peasy chore. But when it comes to beginning a new project from scratch. And setting up your web development environment, you might need to add on a few more steps. Before starting cooking up a new project, you must have all the ingredients sorted. That is, for example, prepare all the data and tools you’ll need along the way.

And indeed, there’s a significant amount of web development tools out there. But what tools are suited to web developers? How do you decide which ones to have in your toolbox? In this article, we’ll bring you some prime extensions and toolkits that will make your web development experience even better. Let’s get ready to know some of Plesk’s essentials for web development, DNS, security, SEO, server, and backup.

Organizing Your Toolbox

At Plesk, our goal is to make web development simple and easy. And its integrated platform with full development and deployment capabilities allows you to build, secure, and run servers and websites. But if what you want to know is how to level up your skills with great tools, here are some excellent examples. Let’s dig deeper:

DNS, Security, and Web Plesk Extensions for Web Developers

Plesk DNSSEC

The DNSSEC acronym stands for Domain Name System Security Extensions. It’s a set of DNS protocol extensions that sign DNS data to secure the domain name resolving process.

The Plesk DNSSEC extension helps make the Internet safer. Let’s see what it allows you to do:

  • Configure the settings used for key generation and rollover.
  • Sign and unsign domain zones according to the DNSSEC specifications.
  • Receive notifications related to DNSSEC records and keys.
  • View and copy DS resource records and DNSKEY resource record sets.

Docker

Docker is a handy software technology that provides containers. That means an extra layer of abstraction and automation of operating-system-level virtualization. As a flexible Plesk tool, Docker can help you perform a wide variety of tasks. But that’s not everything. Docker also removes the obstacles to adapt to new technologies digitally as it uses existing technologies. This way, it acts as an assistant between different operating systems and developers.

The extension also frees applications from system infrastructure. Allowing expansion in capacity through collaboration. Here’s more of what you can achieve with Docker for Plesk:

  • On-demand access to a vast range of modern technologies.
  • Upload a custom image or choose one from a catalog.
  • Deploy and manage Docker containers straight from the Plesk interface.
  • Install Docker containers locally or to a remote node registered in Plesk.

Web Presence Builder

If you’re a beginner in web development, Web Presence Builder is the right tool for you. It doesn’t require great HTML knowledge or graphic design skills. This tool helps you create professional-looking websites not bad, huh?

Web Presence Builder also provides a simple visual editor and a broad set of templates for different websites. Pick a page design that you like and your content template. And then add your text to the pages and publish the website. Here’s what you can do with this tool:

  • Create web pages.
  • Add a wide variety of content (text, images, video, scripts, and more).
  • Edit website settings (website name, keywords, icons, and so on).

Joomla! Toolkit

Up next it’s the Joomla! Toolkit. A complete toolkit to power Joomla! websites. With this toolkit, you can mass-manage, secure, and automate all your instances, extensions, and templates running on a server managed by Plesk. All from one single entry point. Here’s more:

  • One single dashboard to control, maintain and monitor all your instances.
  • One-click installer to download, initialize, and configure Joomla! from start to finish.
  • It hardens your site against all types of cyberattacks with its robust security scanner.

Plesk WordPress Toolkit

As a developer, you’re probably craving lots of features and intelligent tools that make your daily workload easier to digest. Well, we’re proud to say that our beloved Plesk WordPress Toolkit is definitely one of them. With this toolkit, you can focus on core tasks and automate the mundane ones. And substantially increase productivity, security, and efficiency too.  

The Plesk WordPress Toolkit is by far the most complete tool for WordPress admins seeking pre-configured solutions for the best possible performance. As well as an intelligent tool that helps to always keep their WordPress sites secure and up-to-date without breaking a live site. In case you’re not falling yet, here’s why using this tool is not only a smart idea but also a rewarding experience: 

  • Manage all WordPress sites on the server simplifying admin tasks.
  • Install, activate, update, and remove plugins and themes from one single dashboard.
  • Keep the highest level of security selectively securing websites.
  • Clone and stage websites to simulate changes before going live. 
  • Synchronize the changes between files and databases of different sites.
  • Optimize SEO for higher traffic and manage WordPress search engine indexing.

Smart Updates

A great addition to the Plesk WordPress Toolkit is the Smart Updates feature. This power-tool combo automatically updates WordPress core, plugins, and themes using AI. Here’s more:

  • Smart Updates clones and simulates your WordPress updates before performing them.
  • It mitigates the risk of hacked sites by running updates in a secure staging environment without affecting production. 
  • You can activate Smart Updates in WordPress Toolkit with a switch, as well as automate update analysis email notifications.

SEO, Backup, Cloud, and Server Plesk Extensions for Web Developers

SEO Toolkit

Along with the performance, a thought-out SEO strategy is fundamental to improve your search engine rankings. And with better rankings, more visibility, traffic, and conversions. 

Organic search can become your primary source of clicks, traffic, and revenue for your business. With the SEO Toolkit, you get all the tools you need to give your customers a chance to find you online. And help them pick your website over those of your competitors. We’re listing some reasons why you should use SEO Toolkit for your website:

  • Track SEO KPIs and check your website’s Visibility Score to measure your success.
  • Site Audit analyzes your site and gives you tips on how to enhance optimization.
  • SEO Advisor provides you a to-do list to improve your performance based on your Site Audit and Visibility Score.
  • Log File Analyzer will crawl your site and pages to help search engines rank and index them accordingly.
  • Check each of your keyword’s performance and compare it directly to your competitors’.

Google PageSpeed Insights

As explained above, one of the main worries for web developers is site performance. Because after all the work you’ve put into your web development, you just want it to work smoothly and without any issues. But don’t panic – Here’s what you need to know to achieve good visibility in search engines. 

First of all, you need to create websites that are fast, useful to your visitors, optimized for all traffic, and most importantly, mobile-friendly. And secondly, you should monitor your sites with tools like Google PageSpeed Insights. It will help you analyze your website’s content and its performance to suggest specific improvements. Here’s how the PageSpeed Insights extension works:

  • Analyzes the performance of websites hosted on your Plesk server.
  • Assigns every website a desktop and mobile score depending on its performance.
  • Generates a report based on the results of the analysis and displays suggestions to optimize your websites’ performance.
  • Provides links in the extension UI to the suggested tools aimed at improving websites’ performance (for example, the mod_pagespeed Apache module).
  • Gives already compressed files to reduce the size of static files (free API key required).
  • Installs the mod_pagespeed Apache module and lets you configure it for your needs.

Plesk Cgroups Manager

Often, web developers suffer what’s known as the ‘noisy neighbor’ problem. For those who aren’t familiar with this concept, this issue occurs when a website on a shared hosting consumes all system resources and disrupts the performance of other websites.

To avoid this common problem, we recommend using the Plesk Cgroups Manager extension. This solution helps you deliver reliable and continuous availability. The Cgroups Manager lets you control the amount of CPU, RAM, and disk read/write bandwidth resources each subscriber or tier of subscribers gets. You can use Plesk Cgroups to:

  • Prevent consuming of resources of your server by some of the subscriptions on your shared environment.
  • Automatically set a limit of resource consumption, monitor it, and send email notifications when it exceeds a certain level.
  • Set limits at two levels – subscriber service plan level or subscriber level.

Backup to Cloud Pro

Last but not least, we find the Backup to Cloud Pro extension. This solution is for all web professionals that want to set up different backup schedules to the cloud effortlessly. What’s more, it allows you to focus on more exciting and innovative tasks as it automates your backup management. It’s easy to set up and you can secure your domains with Google Drive, Amazon S3, DropBox, DigitalOcean Spaces, and Microsoft OneDrive:

  • Back up the entire server, individual user accounts with websites or individual subscriptions.
  • Schedule backups.
  • Restore data from backup archives.

CyberDeals Sale – 50% Off Selected Plesk Extensions and Toolkits

Thank you for reading up to this point – As a reward, we want to share with you a sneak peek of what’s coming soon this November. From Friday 27th until Monday 30th, we’re giving 50% off all the extensions listed in the article as part of our CyberDeals sale. So if you don’t want to miss out on these unbeatable offers, stay on the lookout for new updates. And catch them before they fly! 

How to survive the shift from developer to manager

How to survive the shift from developer to manager - Plesk at WCUS 2019

Brian Thompson currently runs the Web Team at the Mindgrub Technologies digital agency. He’s been working with WordPress since he was a sysadmin managing WordPress website servers in 2011. He then moved to WordPress development in 2012 before he grew into his current management role. This developer to manager shift happened to Brian. And he came to WCUS to share valuable tools and tips on how to effectively lead a development team.

– Manager responsibilities in both good and bad times

– Building team relationships and soliciting good feedback

– Balancing technical development with team collaboration

– Delivering constructive feedback

– Saying “no”

level up - developer to manager

For many developers, being promoted into a managerial role requires a drastic shift in mindset. While many programming paradigms do carry over to being a manager, there are plenty of other skills that most developers just need to “figure out.”

Brian Thompson

Managing developers is like white water rafting

Just like white water rafting, when taking on a lead engineer role, you need to use the proper equipment. Suddenly tasks and responsibilities start coming at you in all directions. From project managers to developers. You will need something like a task tracker to help organize it all.

Brian Thompson - Managing a developer team is like white water rafting

Brian even admitted to using spreadsheets to collect all his employees information because he is a people manager now. He even created an escalation playbook which personally helps him decipher when and how to get involved when there’s an issue.

Going with the flow can be dangerous

While still on the rafting metaphor, before getting in the water, you will be told to go faster or slower than the water but not at the same speed as the water. This goes for management as well. You need to go faster than your projects or your people. Otherwise, if you’re just sitting back and letting the questions come to you – you are not leading, you are following.

As a manager you need to get used to not always being pointed forward and in the right direction. Sometimes it’s not smooth, you don;t always know where you’re going and may bump into things on occasion. Brian says he walks into situations with a plan or some knowledge, and at least the direction he wants to go in. Even if many things are unclear.

Don’t be afraid of bumps in the road

Sometimes you need to lean into the hazard to deal with it. As a manager, you need to give your team direction. Many times, not everyone needs to be on a project. A few people need to work harder than others. Sometimes it’s OK to allow some team members to have a breather.

You need to deal with adversity because things won’t always go well. You’re going to have bad days, but it’s always important to bounce back up. Every bad experience is a learning opportunity and you can always do better.

Saying NO

How to say no - developer to manager - Plesk at WCUS

As a manager, say no is painful, but there are ways to make it easier. It helps to always give a reason. It helps your team understand. Don’t apologize for saying no, because saying sorry just diminishes your answer. It’s your decision to make, and they may not always agree or like it, but it’s not something to be sorry for if you deem it to be correct at the time.

Understandably this can be tricky and can range from rejecting requests on workflows and processes to salary raises. Sometimes you have to say no to a salary increase because performance is lacking. However you can always give a reason and maybe plan to help them get there.

Mentor vs Manager

Being a mentor to somebody should happen outside of management. Both parties needs to want mentorship. You can try dividing your team into those who need more of your guidance, for whatever reason, and those who may need less. Maybe they work more independently or are on a project which does not need any further involvement. You need to be realistic with how much time you can spend giving individual attention, especially if your team is larger.

Brian’s ultimate advice is to also have fun with it. Even if things aren’t always going your way, there is a lot of reward in leading a great web development team. Whether you’re new to management or simply want to improve your team’s performance, these tips are for you. Empower yourself to become the leader that your team needs and can count on.

Plesk on DigitalOcean is now a one-click app

According to Alex Konrad, Forbes Editor of the Cloud 100 list, Cloud companies like DigitalOcean are revolutionizing how businesses reach their customers today. From digitizing painful old processes to allowing them more time to focus on what they really care about. This is what makes their products unique.

As a Web Professional (Developer, Agency owner, IT Admin) your goal is to provide valuable services to your customers. You want to be able to focus on the things you’re good at. And leave the nitty gritty of technical server management, cost streamlining, running instances, backups, and account management to a VPS. Because a virtual private server fits this purpose exactly. Tired of managing infrastructure and security, when what you want is to focus on coding and improving your product or service? Then Plesk Onyx is the ideal solution.

What is Digital Ocean?

We know DigitalOcean, founded in 2011, as a cloud infrastructure provider with a “developer first” mentality. They simplify web infrastructure for software developers and their mission is to smooth out the complexities of infrastructure. How? By offering one simple and robust platform for developers to easily launch and scale their applications. DigitalOcean is now the second largest and fastest-growing cloud computing platform of all public apps and websites, according to Netcraft.

Over 750,000 registered customers have launched more than 20 million Droplets combined on DigitalOcean. The company is now investing heavily in advancing its platform to further support growing teams and larger applications in production.

DigitalOcean cloud hosting
Image: DigitalOcean

Plesk on DigitalOcean

Plesk manages and secures over 380,000 servers, automates 11 million websites and at least 19 million mailboxes. It’s the leading WebOps, Hosting and Web Server Control Panel to build, secure and run your applications, websites and hosting business. You’ll find it in 32 languages and 140 countries, with 50% of the top 100 worldwide service providers partnering with Plesk today.

Key Plesk Onyx Features

The versatile Plesk Onyx control panel
  • The WebOps platform

Manage all your domains, DNS, applications websites and mailboxes from one single platform.

  • DigitalOcean DNS – integrated into Plesk

The free Plesk DigitalOcean extension integrates Plesk with the DigitalOcean DNS service. This web service is highly available and scalable and you can use it as an external DNS service for your domains. The extension will automatically sync DNS zones between Plesk and DigitalOcean DNS. Here’s how:

  1. After installing Plesk, add your first domain/website.
  2. Then navigate to the domain and click “DigitalOcean DNS” for that domain.
  3. Enter your DigitalOcean API credentials into the extension. Or use OAuth to authorize your DigitalOcean account.
  4. Start having your domains in sync with Digital Ocean DNS.
  • Automated Server Administration

Easily manage your server, including automated updates, application deployment, monitoring, backups and maintenance.

  • User-Friendly Interface

One dashboard to manage multiple sites. Build websites, run updates, monitor performance, and onboard new customers from one place.

  • Security

Plesk on DigitalOcean secures  your applications and websites automatically.  You get a firewall, fail2ban and a web application installed and activated by default. Plus various additional options available on demand as Plesk Extensions. Or by simply upgrading to a Premium Plesk Edition.

  • Ready-to-Code Environment

Enable and manage multiple PHP versions and configurations, JavaScript, Perl, Ruby or Node.js, all in one-click. Every stack is deployed automatically and allows you to do custom configurations as you need.

  • Self-Repair Tools

We built automated healing and recovery functionality into Plesk, so many technical issues can self-repair without any need for support. This starts at fully-automated (safe) updates, including all OS components. And goes to various available manual self-repair tools up to a complete repair panel, in the unlikely event of something going wrong. Additionally, Plesk continuously monitors all relevant system components’ health, and provides notifications to the administrator before something goes wrong.

  • Multi-Language support

Plesk is available in 32 languages.

  • Plesk Extensions

Plesk  is a super-light application, automating all your server components and management needs on Lightsail in a single environment. As your business needs grow, you can use the in-app Plesk Extensions catalog to enable additional features on-demand. Many are free and some provide extra value when premium. Get access by clicking on “Extensions” inside Plesk itself.

Plesk WordPress Toolkit – secure and simple

Staging environment best practices - Plesk WordPress Toolkit

Find full details on Plesk WordPress Toolkit here, but here are some key features below.

  • WordPress Simplified:

One-click installer to initialize and configure WordPress from start to finish. One dashboard to mass-manage multiple WordPress instances.

  • Secure Against Attacks

Hardens your site by default, further enhanced with the Toolkit’s security scanner. No security expertise necessary.

  • Run and Automate your WordPress

Singularly or mass-execute updates to the WP core, themes or plugins. Monitor and run all your WordPress sites from one dashboard.

  • Simple, but not Amateur

Get full control with WP-CLI, maintenance mode, debug management, search engine index management and more.

  • Stage and Test*

Test new features and ideas in a sandbox before pushing them to production – No plugins required, no separate server needed.

  • Cut Out Complexity*

Stage, Clone, Sync, Update, Migrate and more. Execute all these complex tasks with one click. No more high-risk activities or stressed-out dev teams.

  • Smart Updates powered by AI*

Smart Updates feature for WordPress Toolkit analyzes your WordPress updates and performs them without breaking your site. Otherwise, it will warn you the update may be dangerous.

  • One-Click Performance Optimized*

You can reach a maximum performance of your WordPress sites and no time and with great simplicity. Just enable NGINX caching in one click and combine with Speed Kit, powered by a distributed Fastly® CDN and Varnish cache.

*Some of these features are not available within the free Plesk Web Admin SE but require an upgrade to a higher value premium edition of Plesk or Plesk Extension.

Plesk on DigitalOcean (free) includes Plesk Web Admin Edition SE, a free version of Plesk with up to 3 domains and good for small websites and certain limitations. To gift yourself with a higher value Plesk edition, check out our Plesk Upgrades.

How to deploy Plesk on DigitalOcean

  1. First, log in to your DigitalOcean account.

2. Then, from the main dashboard, click “Droplets” and “Create” -> “Droplets”.

Plesk on DigitalOcean now a one-click app - How to deploy - Create Droplet

3. Under “Choose an image”, click “one-click apps”

4. Select “Plesk”.

PLesk on DigitalOcean - Now a one-click app - Choose a size - Droplets

5. Choose your size and then a data center region. If you plan to host small business websites, we recommend choosing the zone closest to their geographic location to reduce page load times for local visitors.

Note: Plesk runs smoothly with 1GB RAM and 1 vCPU for smaller websites and environments. Running many websites or higher traffic requires a larger droplet size.
Please also refer to the Plesk infrastructure requirements for details.

Plesk on DigitalOcean now a one-click app - Finalize and create Droplet

6. Additional options such as Private networkingBackupsUser data, and Monitoring are not necessary for most Plesk users. Then click “Create”.

7. You can log in to your droplet using:

  • A root password, which you will receive by email. If you go with this option, skip the “Add your SSH keys” step and go to the next one.
    • Just type in your browser: https://<your-droplet-IP>:8443 . You will potentially see for 30 seconds some finishing procedure of the automatic deployment. Afterwards you will automatically land in the initial on-boarding of Plesk.
  • An SSH key. If you go with this option, click New SSH key to add a new SSH key or select a previously added key (if you have any).

Note: Using SSH keys is a more secure way of logging in. If you use a root password, we strongly recommend that you log in to the droplet command line and change the root password received by email. The command line will automatically prompt you to do so.

Enjoy and let us know if there are any questions!

The top five best web development YouTube Channels

Best Web Development Youtube Channels

To stay sharp as a developer, or even learn to code from scratch, you need to see examples. Also, explore new ideas and stay current. How do you get that done? Conferences, meetups, and events are one way. However, this can be an expensive approach. Alternatively? Use the best web development YouTube channels to get your info.

It’s full of other developers’ perspectives and tips. The web development Youtube videos in this roundup cover web development specifically. Basically everything you need to keep your products working and your customers happy.

The best Web Development YouTube Channels

1. The New Boston

The New Boston is at the top of the article for a reason. With an archive of more than 4,000 videos and nearly two million subscribers, there’s plenty to explore. Let’s highlight a few of the channel’s main playlists.

Best Web Development Youtube Channels: The New Boston YouTube Channel

Best YouTube programming videos from The New Boston:

At the time of this writing, it has been over a year since The New Boston came out with a new video. In the meantime, their in-depth archive of short training videos – many are 5-15 minutes long – will get your hands dirty when working with new technologies.

2. Adam Khoury (Developer Training & Programming Courses)

With coverage of JavaScript, PHP, SQL, HTML, CSS, ActionScript and other technologies, this channel has been running for nearly ten years. The channel is solid in JavaScript with over 100 videos dedicated to the technology.

Best Web Development Youtube Channels: Adam Khoury YouTube Channel

Best YouTube videos for developer training and programming courses:

3. Google Chrome Developers

As one of the most popular browsers today, it makes sense to keep up with the peeps from Chrome. In addition to Chrome-specific news, the channel also covers broader issues relating to web development. A few examples below.

Best Web Development Youtube Channels: Google Chrome Developers YouTube Channel

Best YouTube videos from Google Chrome Developers:

4. LevelUpTuts (Become a Better Web Developer)

Open up your notebook when you visit this channel – it is a pure tutorial experience. If you are the kind of the person, who likes to take 15-30 minutes a day for professional development, check this channel out.

Best Web Development Youtube Channels: Level Up Tutorials

This channel stands out for its technical breadth and depth with step by step demonstrations. You’ll even find a few tutorials covering Sketch, a popular design tool.

Best YouTube videos on LevelUp Tuts:

5. WPBeginner – WordPress Tutorials

Many web hosts offer one-click installation for WordPress. That’s just the beginning when it comes to using WordPress effectively. Use this channel’s tutorials to customize your WordPress site and improve performance. You’ll also find helpful tips to fix some of the most common WordPress errors.

Best Web Development Youtube Channels: WPBeginner WordPress Tutorials

Best YouTube videos for WordPress Beginners:

What’s next after watching YouTube?

Let’s face it, watching videos has become a part of all of our days. We get it, it’s a fun way to learn. But you need more after you’ve sat through our pick of the top tutorial-oriented videos from the best web development Youtube channels.

So just schedule 30 minutes on your calendar to tinker with the idea. Let us know in the comments below if you’ve added any of these top web development channels to your YT subscriber list. Or tell us if you agree with our list or not on Facebook and Twitter.

6 essentials on Docker containers

Docker containers

Docker is one of the most successful open source projects in recent history, it’s fundamentally shifting the way people think about building, shipping and running applications. If you’re in the tech industry then the chances you’re already aware of the project. We’re going to look at 6 key points about Docker.

According to Alex Ellis, Docker Captain, Containers are disruptive and are changing the way we build and partition our applications in the cloud. Gone are monolithic systems and in come microservices, auto-scaling and self-healing infrastructure. Forget heavy-weight SOAP interfaces – REST APIs are the new lingua franca.

Whether you are wondering how Docker fits into your stack or are already leading the way – here are 6 essential facts that you and your team need to know about containers.

1. Containers are not VMs

Containers and virtual machines have similar resource isolation and allocation benefits – but a different architectural approach allows containers to be more portable and efficient. The main difference between containers and VMs is in their architectural approach.

Difference between containers and VMs

Virtual machines

VMs include the application, the necessary binaries, libraries, and an entire guest operating system — all of which can amount to tens of GBs. VMs run on top of a physical machine using a Hypervisor.  The hypervisors themselves run on physical computers, referred to as the “host machine”. The host machine is what provides the VM with resources, including RAM and CPU. These resources are divided among VMs.  So if one VM is running a more resource heavy application, more resources would be allocated to that one than to the other VMs running on the same host machine.

The VM that is running on the host machine is also often called a “guest machine.”

This guest machine contains both the application and whatever it needs to run that application (e.g. system binaries, libraries). It also carries an entire virtualized hardware stack of its own, including virtualized network adapters, storage, and CPU — which means it in turn has its own full-fledged guest operating system. From the inside, the guest machine behaves as its own unit with its own dedicated resources. From the outside, we know that it’s a VM — sharing resources provided by the host machine.

Containers

For all intents and purposes, containers look like a VM. The *key* is that the underlying architecture is fundamentally different between the containers and virtual machines. The big difference between containers and VMs is that containers *share* the host system’s kernel with other containers. The image above shows that containers package up just the user space, and not the kernel or virtual hardware like a VM does.

Each container gets its own isolated user space to allow multiple containers to run on a single host machine. All the operating system level architecture is being shared across containers.

The only parts that are created from scratch are the bins and libs – this is what makes containers so lightweight and portable. Virtual machines are built in the opposite direction. They start with a full operating system and, depending on the application, developers may or may not be able to strip out unwanted components.

  • Basically containers provide same functionality which provides by VMs, with out any hypervisor overhead
  • Containers are more light weight than VMs, since it shares kernel with host without hardware emulation (hypervisor)
  • Docker is not a virtualization technology, it’s an application delivery technology.
  • A container is “just” a process – literally a container is not “a thing”.
  • Containers use kernel features such as kernel namespaces, and control groups (cgroups)
  • Kernel namespaces provide basic isolation and CGroups use for resource allocation

Namespaces

  • Kernel namespaces provide basic isolation
  • It guarantee that each container cannot see or affect other containers
  • For an example, with namespaces you can have multiple processes with same PID in different environments (containers)
  • There are six types of namespaces available
  1. pid (processes)
  2. net (network interfaces, routing…)
  3. ipc (System V IPC)
  4. mnt (mount points, filesystems)
  5. uts (hostname)
  6. user (UIDs)

CGroups

  • CGroups(Control Groups) allocate resources and apply limits to the resources a process can take (memory, CPU, disk I/O)
    between containers
  • It ensure that each container gets its fair share of memory, CPU, disk I/O(resources),
  • Also It guarantee that single container not over consuming the resources

2. A Container (Process) can start up in one-twentieth of a second

Containers can be created much faster than virtual machines because VMs must retrieve 10-20 GBs of an operating system from storage. The workload in the container uses the host server’s operating system kernel, avoiding that step. According to Miles Ward, Google Cloud Platform’s Global Head of Solutions, a container (process) can start up in ~1/20th of a second compared to a minute or so for a modern VM. When development teams adopt Docker –  they add a new layer of agility, and productivitiy to the software development lifecycle.

Docker catalog

Image: Plesk Onyx

Having that speed right in place allows a development team to get project code activated, to test code in different ways, or to launch additional e-commerce capacity on its website –  all very quickly.
3. Containers have proven themselves on a massive scale
The world’s most innovative companies are adopting microservices architectures, where loosely coupled together services from applications. For example, you might have your Mongo database running in one container and your Redis server in another while your Node.js app is in another. With Docker, it’s become much more easier to link these containers together to create your application, making it easy-to-scale or update components independently in the future.

According to InformationWeek, another example is Google. Google Search is the world’s biggest implementer of containers, which the company uses for internal operations. In running Google Search operations, it uses containers by themselves, launching about 7,000 containers every second, which amounts to about 2 billion every week. The significance of containerization is that it is creating a standard definition and corresponding reference runtime that industry players will need to be able to move containers between different clouds (Google, AWS, Azure, DigitalOcean,…) which will allow applications and containers to become the portability layer going forward.
Docker helped create a group called the Open Container Initiative formed June 22nd 2015. The group exists to provide a standard format for container images and a specification for container runtimes. This helps avoid vendor lock-in and means your applications will be portable between many different cloud providers and hosts.
4. Containers are “lightweight”

As mentioned before, containers running on a single machine share the same operating system kernel – they start instantly and use less RAM. Docker for example has made it much easier for anyone — developers, sysadmins, and others — to take advantage of containers in order to quickly build and test portable applications. It allows anyone to package an application on their laptop, which in turn can run unmodified on any public cloud, private cloud, or even bare metal – the mantra is: “build once, run anywhere.”

Container architecture
5. Docker has become synonymous with containers
Docker is rapidly changing the rules of the cloud and upending the cloud technology landscape. Smoothing the way for microservices, open source collaboration, and DevOps. Docker is changing both the application development lifecycle and cloud engineering practices.

Stats:

  • 2B+ Docker Image Downloads
  • 2000+ contributors
  • 40K+ GitHub stars
  • 200K+ Dockerized apps
  • 240 Meetups in 70 countries
  • 95K Meetup members

Every day, lot’s of developers are happily testing or building new Docker-based apps with Plesk Onyx  – understanding where the Docker fire is spreading is the key to staying competitive in an ever-changing world.

Web Professionals understood that containers would be much more useful and portable if there was one way of creating them and moving them around, instead of having a proliferation of container formatting engines. Docker, at the moment, is that de facto standard.

They’re just like shipping containers, as Docker’s CEO Ben Golub likes to say. Every trucking firm, railroad, and marine shipyard knows how to pick up and move the standard shipping container. Docker containers are welcome the same way in a wide variety of computing environments.
6. Docker’s ambassadors: the Captains
Have you met the Docker Captains yet? There’s over 67 of them right now and they are spread all over the world. Captains are Docker ambassadors (not Docker employees) and their genuine *love* of all things Docker has a huge impact on the community.

That can be blogging, writing books, speaking, running workshops, creating tutorials and classes, offering support in forums, or organizing and contributing to local events.

Here, you find out on how you can follow all the Captains without having to navigate through over 67 web pages.

The Docker Community offers you the Docker basics, and lots of different ways to engage with other Docker enthusiasts who share a passion for virtual containers, microservices and distributed applications.

Got a cool Docker hack? Looking to organize, host or sponsor Docker meetups? Want to share your Docker story?

Get involved with the Docker Community here.
Docker basics

7. Alex Ellis – Docker Captain

I became a Docker Captain after being nominated by a Docker Inc. employee who had seen some of my training materials and activity in the community helping local developers in Peterborough to understand containers and how they fit into this shifting landscape of technology. The engergy and enthusiasm of Docker’s team was what lead me to start this journey on the Captains’programme.

It’s all about raising up new leaders in the community to advocate the benefits of containers for software engineering. We also write and speak about exciting new features in the Docker eco-system and  presence ourselves in conferences, meet-up groups and in the marketplace. Start my self-paced, Hands-On Docker tutorial here. If you have questions, or want to talk I’m on Twitter.

Thank you to Docker Captain Alex Ellis for co-authoring the introduction to this write-up and for providing feedback and technical insights on containers.

Be well, do good, and stay Plesky!

Cheers,
Jörg

Sources: Docker.com, Alex Ellis, Google Cloud Platform BlogInformationWeek, Freecodecamp

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