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Revealed: The best and worst of Docker
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================================================================================
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Credit: [Shutterstock][1]
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> Docker experts talk about the good, the bad, and the ugly of the ubiquitous application container system
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No question about it: Docker's app container system has made its mark and become a staple in many IT environments. With its accelerating adoption, it's bound to stick around for a good long time.
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But there's no end to the debate about what Docker's best for, where it falls short, or how to most sensibly move it forward without alienating its existing users or damaging its utility. Here, we've turned to a few of the folks who have made Docker their business to get their takes on Docker's good, bad, and ugly sides.
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### The good ###
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One hardly expects Steve Francia, chief of operations of the Docker open source project, to speak of Docker in anything less than glowing terms. When asked by email about Docker's best attributes, he didn't disappoint: "I think the best thing about Docker is that it enables people, enables developers, enables users to very easily run an application anywhere," he said. "It's almost like the Holy Grail of development in that you can run an application on your desktop, and the exact same application without any changes can run on the server. That's never been done before."
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Alexis Richardson of [Weaveworks][2], a virtual networking product, praised Docker for enabling simplicity. "Docker offers immense potential to radically simplify and speed up how software gets built," he replied in an email. "This is why it has delivered record-breaking initial mind share and traction."
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Bob Quillin, CEO of [StackEngine][3], which makes Docker management and automation solutions, noted in an email that Docker (the company) has done a fine job of maintaining Docker's (the product) appeal to its audience. "Docker has been best at delivering strong developer support and focused investment in its product," he wrote. "Clearly, they know they have to keep the momentum, and they are doing that by putting intense effort into product functionality." He also mentioned that Docker's commitment to open source has accelerated adoption by "[allowing] people to build around their features as they are being built."
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Though containerization itself isn't new, as Rob Markovich of IT monitoring-service makers [Moogsoft][4] pointed out, Docker's implementation makes it new. "Docker is considered a next-generation virtualization technology given its more modern, lightweight form [of containerization]," he wrote in an email. "[It] brings an opportunity for an order-of-magnitude leap forward for software development teams seeking to deploy code faster."
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### The bad ###
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What's less appealing about Docker boils down to two issues: the complexity of using the product, and the direction of the company behind it.
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Samir Ghosh, CEO of enterprise PaaS outfit [WaveMaker][5], gave Docker a thumbs-up for simplifying the complex scripting typically needed for continuous delivery. That said, he added, "That doesn't mean Docker is simple. Implementing Docker is complicated. There are a lot of supporting technologies needed for things like container management, orchestration, app stack packaging, intercontainer networking, data snapshots, and so on."
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Ghosh noted the ones who feel the most of that pain are enterprises that want to leverage Docker for continuous delivery, but "it's even more complicated for enterprises that have diverse workloads, various app stacks, heterogenous infrastructures, and limited resources, not to mention unique IT needs for visibility, control and security."
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Complexity also becomes an issue in troubleshooting and analysis, and Markovich cited the fact that Docker provides application abstraction as the reason why. "It is nearly impossible to relate problems with application performance running on Docker to the performance of the underlying infrastructure domains," he said in an email. "IT teams are going to need visibility -- a new class of monitoring and analysis tools that can correlate across and relate how everything is working up and down the Docker stack, from the applications down to the private or public infrastructure."
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Quillin is most concerned about Docker's direction vis-à-vis its partner community: "Where will Docker make money, and where will their partners? If [Docker] wants to be the next VMware, it will need to take a page out of VMware's playbook in how to build and support a thriving partner ecosystem.
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"Additionally, to drive broader adoption, especially in the enterprise, Docker needs to start acting like a market leader by releasing more fully formed capabilities that organizations can count on, versus announcements of features with 'some assembly required,' that don't exist yet, or that require you to 'submit a pull request' to fix it yourself."
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Francia pointed to Docker's rapid ascent for creating its own difficulties. "[Docker] caught on so quickly that there's definitely places that we're focused on to add some features that a lot of users are looking forward to."
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One such feature, he noted, was having a GUI. "Right now to use Docker," he said, "you have to be comfortable with the command line. There's no visual interface to using Docker. Right now it's all command line-based. And we know if we want to really be as successful as we think we can be, we need to be more approachable and a lot of people when they see a command line, it's a bit intimidating for a lot of users."
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### The future ###
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In that last respect, Docker recently started to make advances. Last week it [bought the startup Kitematic][6], whose product gave Docker a convenient GUI on Mac OS X (and will eventually do the same for Windows). Another acqui-hire, [SocketPlane][7], is being spun in to work on Docker's networking.
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What remains to be seen is whether Docker's proposed solutions to its problems will be adopted, or whether another party -- say, [Red Hat][8] -- will provide a more immediately useful solution for enterprise customers who can't wait around for the chips to stop falling.
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"Good technology is hard and takes time to build," said Richardson. "The big risk is that expectations spin wildly out of control and customers are disappointed."
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--------------------------------------------------------------------------------
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via: http://www.infoworld.com/article/2896895/application-virtualization/best-and-worst-about-docker.html
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作者：[Serdar Yegulalp][a]
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
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[a]:http://www.infoworld.com/author/Serdar-Yegulalp/
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[1]:http://shutterstock.com/
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[2]:http://weave.works/
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[3]:http://stackengine.com/
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[4]:http://www.moogsoft.com/
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[5]:http://www.wavemaker.com/
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[6]:http://www.infoworld.com/article/2896099/application-virtualization/dockers-new-acquisition-does-containers-on-the-desktop.html
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[7]:http://www.infoworld.com/article/2892916/application-virtualization/docker-snaps-up-socketplane-to-fix-networking-flaws.html
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[8]:http://www.infoworld.com/article/2895804/application-virtualization/red-hat-wants-to-do-for-containers-what-its-done-for-linux.html
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Locate Stolen laptops and Smart phones Using Prey Tool in Ubuntu
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================================================================================
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Prey is an open source, cross platform tool which helps recover your stolen laptops, desktops, tablet computers and smart phones. It has gained vast popularity and has claimed to help recover hundreds of missing laptops and smart phones. The working of this tool is pretty simple, install it on your Laptop or smart phone, and if your device goes missing, login the Prey website with your credentials and mark your device as “Missing” there. As soon as the thief connects your device with internet, it will immediately send you the Geo location of your device. If your laptop is having webcam, it will also capture the screenshot of the thief.
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Prey consumes minimum system resources; it does not affect your device’s performance in any way. You can also use it alongside any other anti-theft application you had installed on your device. It uses secure and encrypted channels to communicate your device data with Prey servers.
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### Installing and configuring Prey on Ubuntu ###
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Let’s see how we can install and configure Prey on ubuntu, note that during configuration process, we will have to register an account at Prey official website. Once done, it will be able to monitor your devices. Its free account monitors up-to 3 devices, if you need to add more devices to its watch list, you need to purchase appropriate plan.
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Considering the popularity and use of Prey, it has been added to the official ubuntu repository now. That means you don’t need to add any additional PPA to the package manager. Simply launch your terminal application and run the following command to install it:
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sudo apt-get install prey
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It is a very lightweight application, uses only few MB of space on the system, once installation is completed, launch it from Applications >> Prey and it will ask you for the configuration.
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Choose “New user” if you are using this app for first time.
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This second step is actually the process to sign you up on Prey official website. Please provide your username, email address and password for free account.
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Hit “Apply” once done, that’s all, your computer is now protected by Prey.
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Login your newly created [Prey account][1] and you should be able to see your device information there under “Devices” menu.
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As soon as your laptop or any other device goes missing, simply login your Prey web account and change the device status to “missing” by clicking “Set Device to Missing” option.
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Choose report frequency from here and hit “Yes, my device is missing”. Report Frequency option is the time interval after which this app will send you status updates for your device location. It will email you as soon as the device status is changed from web interface.
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As soon as your stolen device is connected to the internet, it will immediately send you report, containing your device's Geo whereabouts and IP address.
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Click the report link and you should be able to see your device’s Geo location and IP address.
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There is one known drawback in Prey , It needs your device to be connected to internet for sending Geo location, if thief is smart enough to format your device hard disk before connecting it to the network, then you’ll never get report of its recovery. But there is still a work around to overcome this drawback, make sure to add a BIOS password and disable booting the system from removable devices.
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### Conclusion ###
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It is a small, very useful security application which lets you track all of your devices on a single place, although not perfect, but still provides good level of recovery chances for your stolen devices. It runs seamlessly on Linux, Windows and Mac operating system. Here are details about Prey Pro plans.
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--------------------------------------------------------------------------------
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via: http://linoxide.com/ubuntu-how-to/anti-theft-application-prey-ubuntu/
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作者：[Aun Raza][a]
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
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[a]:http://linoxide.com/author/arunrz/
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[1]:https://preyproject.com/
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Sleuth Kit - Open Source Forensic Tool to Analyze Disk Images and Recover Files
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================================================================================
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SIFT is a Ubuntu based forensics distribution provided by SANS Inc. It consist of many forensics tools such as Sleuth kit / Autopsy etc . However, Sleuth kit/Autopsy tools can be installed on Ubuntu/Fedora distribution instead of downloading complete distribution of SIFT.
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Sleuth Kit /Autopsy is open source digital forensics investigation tool which is used for recovering the lost files from disk image and analysis of images for incident response. Autopsy tool is a web interface of sleuth kit which supports all features of sleuth kit. This tool is available for both Windows and Linux Platforms.
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### Install Sleuth kit ###
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First of all, download Sleuth kit software from [sleuthkit][1] website. Use wget command to download it in terminal which is shown in the figure.
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# wget http://cznic.dl.sourceforge.net/project/sleuthkit/sleuthkit/4.1.3/sleuthkit-4.1.3.tar.gz
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Extract the sleuthkit-4.1.3.tar.gz using following command and go inside the extracted directory
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# tar -xvzf sleuthkit-4.1.3.tar.gz
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Run following command which perform the requirement check before sleuth kit installation
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#./configure
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Make command compile the sleuth kit code.
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#make
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Finally following command install it under **/usr/local** path.
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#make install
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### Install Autopsy Tool ###
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Sleuth kit installation is complete and now we will install autopsy interface. Download Autopsy software from [sleuthkit's autopsy page][2] . Use wget command to download it in terminal which is shown in the figure.
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# wget http://kaz.dl.sourceforge.net/project/autopsy/autopsy/2.24/autopsy-2.24.tar.gz
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Extract the autopsy-2.24.tar.gz using following command and go inside the extracted directory
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# tar -xvzf autopsy-2.24.tar.gz
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Configuration script of autopsy asks for NSRL (National Software Reference Library) and path of **Evidence_Locker** folder.
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Enter "n" for NSRL prompt and create Evidence_Locker folder under **/usr/local** directory. Autopsy stores the configuration files, audit logs and output under Evidence_Locker folder.
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#mkdir /usr/local/Evidence_Locker
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#cd autopsy-2.24
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#./configure
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After adding Evidence_Locker path in installation process , autopsy stores configuration files in it and shows a following message to run the autopsy program.
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Type **./autopsy** command in terminal to start the graphical interface of Sleuth kit tool.
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Type following address in the web browser to access the interface of autopsy .
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http://localhost:9999/autopsy
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Main web page of autopsy plugin is shown int the following figure.
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Click on the **New Case** button to start analysis in autopsy tool. Enter the case name, description about the investigation and name of agent which is shown in the following figure.
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Following web page will appear after entering the details in the above page. Click on **Add Host** button to add details for the analyst machine.
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Enter host name, description and time zone setting of analyst machine on the next page.
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Click on the **Add Image** button to add image file for forensics analysis.
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Click on the **Add Image File** button on the following web page. It opens new web page which require Path of image file and select type & importing method.
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As shown in the following figure, we have entered path of Linux image file. In our case, image file is partition of disk.
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Click on the next button and select **Calculate hash** option in the next page which is shown in the following figure. It also detect the file system type of the given image.
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Following window shows the MD5 hash of the image file before static analysis .
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On the next web page, autopsy shows following information about the image file.
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- mount point for the image
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- name of image
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- file system type of given image
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Click on the **details** button to get more information about the given image file. It also offer extraction of unallocated fragments and strings from the volume of image file which is shown in the following figure.
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Click on **Analyze** button which is shown in the below figure to start analysis on given image . It opens another page which shows the multiple options for image analysis.
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Autopsy offer following features during image analysis process.
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- File Analysis
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- Keyword Search
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- File Type
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- Image Details
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- Data Unit
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File Analysis on given image of Linux partition is shown in the following figure.
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It extracts all files and folders from the given image . Extraction of deleted files are shown int he figure.
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### Conclusion ###
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Hopefully this article will be useful for the beginner in static forensics analysis of disk image. Autopsy is web interface for sleuth kit which provides features such as extraction of strings , recovery of deleted files, timeline analysis, extraction of web surfing history, keyword search and email analysis on windows and linux disk images.
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--------------------------------------------------------------------------------
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via: http://linoxide.com/ubuntu-how-to/autopsy-sleuth-kit-installation-ubuntu/
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作者：[nido][a]
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
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[a]:http://linoxide.com/author/naveeda/
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[1]:http://www.sleuthkit.org/sleuthkit/download.php
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[2]:http://www.sleuthkit.org/autopsy/download.php
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