Linux Blimp

Nov 09, 2018, 10:00

In this article, we will explain how you can install the DropBox application on your Ubuntu system, both through the UI and the command line.

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Apple’s long-awaited refresh of the Mac Mini includes a component called the “T2 Security Chip” which Apple touts as having “a Secure Enclave coprocessor, which provides the foundation for APFS encrypted storage, secure boot, and Touch ID on Mac,” as well as integrating “the system management controller, image signal processor, audio controller, and SSD controller,” which were separate components in previous Mac systems. Because of the extent to which T2 is involved with the boot sequence of this new hardware, Apple controls what operating systems can be loaded onto their hardware.

While Apple provides a way to unlock parts of this process using Boot Camp Assistant to enable installation of Windows, Apple’s documentation (PDF link) indicates that “there is currently no trust provided for the the Microsoft Corporation UEFI CA 2011, which would allow verification of code signed by Microsoft partners. This UEFI CA is commonly used to verify the authenticity of bootloaders for other operating systems such as Linux variants.”

SEE: Comparison chart: NAS devices (Tech Pro Research)

Because of this restriction, the Mac Mini is not suitable for users looking for a small form factor (SFF) PC to install Linux on. Though it may seem counterintuitive to purchase a Mac to not run OS X, Apple’s diminutive SFF PCs remain popular options with Linux users since they were introduced in 2005. Since that time, other manufacturers have introduced compelling miniature PCs with robust support for Windows and Linux, with easier access to internals for component upgrades.

Intel “Hades Canyon” NUC series

The Hades Canyon series includes a front-facing HDMI port for connecting a VR headset.

Image: Intel

Intel’s Next Unit of Computing (NUC) series, introduced in 2013, is perhaps the second most well-known brand of SFF PCs. Intel sells NUC systems as barebones kits, requiring the user to add their own memory and drive. Of these, the Kaby Lake-G, also known as “Hades Canyon” series are by far the most powerful, as they fuse Intel’s 8th generation Core CPUs with a custom AMD Radeon RX Vega M GPU on chip, providing a significant graphics performance benefit over the Intel UHD Graphics 630 found in the Mac Mini. The Hades Canyon NUCs have a wealth of ports, including two HDMI 2.0 and two ThunderBolt 3 USB-C ports, as well as five USB 3.0 Type-A, one USB 3.1 Gen 2 Type-C, and one USB 3.1 Gen 2 Type-A ports, and two Gigabit Ethernet ports.

The NUC8i7HVK has a quad core i7‑8809G, rated for 3.1 GHz base/4.2 GHz turbo, with 8MB L3 cache, with an AMD GPU with 24 computing and 1536 shading units, rated for 1063 MHz base/1190 MHz turbo, paired with 4GB of HBM2 memory. It can be equipped with up to 64 GB RAM and has two PCIe 2.0 x4 linked M.2 slots. Intel was asking $999 at launch, though was discounted almost immediately thereafter. (Amazon sells it for $849.)

The NUC8i7HNK offers the same ports, but has a modestly less powerful CPU and GPU, smaller cache, and the CPU is locked on this model, preventing overclocking. The average $100 cost savings on this model is not worth the performance penalty. The case is not as visually appealing as the Mac Mini, but the LED Skull on the case is software-controlled and can be easily disabled, making it invisible. The case is slightly more retangular than the Mac Mini, making it modestly longer, though not as deep at 8.7 x 5.5 x 1.5″ (221.0 x 139.7 x 38.1 mm).

Intel Coffee Lake NUC series

The Coffee Lake series of NUCs share the same case style. All three models include additional headroom to store a 2.5″ HDD or SSD, as pictured, though the Core i5 and i3 models have a shorter variant which use only an M.2 SSD.

Image: Intel

For those who do not need a discrete GPU, the Coffee Lake series NUCs are affordable alternatives. That said, the Iris Plus Graphics 655 featured in the Coffee Lake NUCs have 48 execution and 384 shading units, double that of the CPUs used in the 2018 Mac Mini. Iris Plus also features 128 MB eDRAM, while the UHD Graphics 630 has none. The Coffee Lake NUCs have four USB 3.1 Gen 2 Type-A ports, and one ThunderBolt 3 USB-C port, as well as one HDMI 2.0, and one Gigabit Ethernet port each. The Coffee Lake series can be equipped with up to 64 GB RAM.

• The high-end NUC8i7BEH has a quad-core i7-8559U, rated for 2.7 GHz base/4.5 GHz turbo, and space for one 2.5″ and one M.2 drive, and retails for $469.
• The mid-range NUC8i5BEH has a quad-core i5-8259U, rated for 2.3 GHz base 3.8 GHz turbo, and space for one 2.5″ and one M.2 drive. While the NUC8i5BEK has only space for one M.2 drive. Both retail for $360.
• The low-end NUC8i3BEH has a dual-core i3-8109U, rated for 3.0 GHz base/3.6 GHz turbo, and space for one 2.5″ and one M.2 drive. While the NUC8i3BEK has only space for one M.2 drive. Both retail for $275.
• The Coffee Lake NUCs are smaller than the Mac Mini, measuring in at 4.6 x 4.4 x 2.0″ (116.8 x 111.8 x 50.8 mm), with models lacking space for a 2.5″ drive decrease height to 1.4″ (35.6 mm).

Gigabyte Brix

Like Intel’s Coffee Lake NUCs, the Gigabyte Brix series of SFF PCs include space for a 2.5″ HDD or SSD, as pictured, though shorter variants which use only M.2 SSDs are also available.

Image: Gigabyte

Popular motherboard manufacturer Gigabyte also offers a variety of configurations in their Brix lineup of SFF PCs, from the high-end Intel Core i7 to low-power Celeron offerings.

For the current generation of Brix systems, the GB-BRI7H-8550 is powered by a quad-core i7-8550U, rated for 1.8 GHz base/4.0 GHz turbo, space for one 2.5″ and one M.2 drive, and retails for $499. It measures in at 4.7 x 4.43 x 1.84″ (119.4 x 112.6 x 46.8 mm) with the GB-BRi7-8550 removing space for the 2.5″ drive, decreasing height to 1.35″ (34.4 mm).

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Canonical and Spicule have joined forces to bring your business a better option for open source big data and streaming analytics.

You can learn more about us at some of our upcoming events – read on to find out more.

Or, jump right in and get started using JAAS to deploy a fully supported Hadoop stack for interactive SQL based analytics.

Get started with JAAS

Organisations have massive amounts of valuable data at their fingertips. The challenge is how to operationalise, analyse and gain insights from that data that can mean big advantages for your business in terms of:

• Increased revenue
• Efficiencies in modeling, processing, automation, deployment, and
• Informing decisions about operations and performance

Ubuntu is the platform of choice for these ambitions, working in partnership with companies such as Spicule. Together, we bring easy-to-use, customisable, flexible data platforms developed by Juju experts, and the expertise and efficiency on any cloud that solves for the complexities of big software.

Using Juju as a service (JaaS), users have the ability to spin up complex applications onto different platforms. Combine this with Anssr from Spicule, the software needed to manage data, and we level the competitive playing field for companies looking to configure, scale and install data-based solutions.

If you want to get started and see what it’s all about, check out our tutorial which walks you step-by-step through building and deploying a model.

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On most computer systems, Linux or otherwise, when you plug a USB thumb drive in, you’re alerted that the drive exists. If the drive is already partitioned and formatted to your liking, you just need your computer to list the drive somewhere in your file manager window or on your desktop. It’s a simple requirement and one that the computer generally fulfills.

Sometimes, however, a drive isn’t set up the way you want. For those times, you need to know how to find and prepare a storage device connected to your machine.

What are block devices?

A hard drive is generically referred to as a “block device” because hard drives read and write data in fixed-size blocks. This differentiates a hard drive from anything else you might plug into your computer, like a printer, gamepad, microphone, or camera. The easy way to list the block devices attached to your Linux system is to use the lsblk (list block devices) command:

Read more at OpenSource.com

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VMware is the company that did more than perhaps any other to help usher in the era of enterprise server virtualization that has been the cornerstone of the last decade of computing. Now VMware once again is positioning itself to be a leader, this time in the emerging world of Kubernetes-based, cloud-native application infrastructure.

On Nov. 6, VMware announced that it is acquiring privately held Kubernetes startup Heptio, in a deal that could help further cement VMware’s position as a cloud-native leader. Heptio was launched in 2016 by the co-founders of Kubernetes, Craig McLuckie and Joe Beda, in an effort to make Kubernetes more friendly to use for enterprises. Financial terms of the deal have not been publicly disclosed, though Heptio has raised $33.5 million in venture funding.

VMware’s acquisition of Heptio comes a week after IBM announced its massive $34 billion deal for Red Hat. While Heptio is a small startup, the core of what IBM was after in Red Hat is similar to what VMware is seeking with Heptio, namely a leg up in the Kubernetes space to enable the next generation of the cloud.

The Kubernetes market has grown quickly, especially given that the technology is just over 4 years old. On the occasion of Kubernetes’ fourth birthday, Beda explained in an eWEEK video how the cloud landscape has changed and evolved with Kubernetes.

Heptio’s product portfolio includes the company’s distribution of Kubernetes, as well as multiple open-source projects including the Ksonnet configuration, Ark disaster recovery and Sonobuoy diagnostics projects.

As to why Heptio decided to sell to VMware, it’s all about scale.

“Our mission has been to make an upstream open rendition of Kubernetes ubiquitously available in a multicloud world,” McLuckie said during a press call announcing the deal. “Obviously, the set of resources that we can bring to bear as a 2-year-old startup is at a certain level, whereas when you look at an organization like VMware, they have led the enterprise through disruptive transformation that’s not all that dissimilar from this new cloud-native change.”

Kubernetes at VMware

VMware wasn’t a stranger to Kubernetes prior to Heptio and already has its Pivotal Container Service (PKS) in market. PKS was announced in August 2017 as a collaboration between Google, VMware and Pivotal. The platform has been updated and expanded in the year since, with the most recent PKS 1.2 update, which was released on Sept. 25. Heptio’s technology is set to be folded into PKS, providing further usability and feature enhancements.

VMware is also very active in the open-source community that enables Kubernetes. The Kubernetes 1.12 milestone, which was released on Sept. 27, was led by VMware senior staff engineer Tim Pepper. VMware’s larger open-source efforts have also expanded in recent years, thanks to the leadership of the company’s chief open-source officer, Dirk Hohndel.

Multicloud

Fundamentally the direction that enterprise IT seems to be heading is multicloud. While the term “multicloud” is often used and misused as a marketing term, it is an actual reality. Organizations are using on-premises assets, sometimes aligned as private cloud, as well as more than one public cloud provider.

Managing and orchestrating a consistent set of policies and workflows across on-premises deployments and multiple public cloud providers is not an easy task when each of the different deployment modalities have their own unique set of options. That’s where Kubernetes fits in and has truly become the enabler, the glue if you will, that binds the real multicloud together.

With Kubernetes’ capable on-premises infrastructure and the same Kubernetes base available across all public cloud providers, it is possible to manage uniform policy and control in a multicloud way. Red Hat’s OpenShift has been a strong early leader in the space, and VMware, with its large on-premises install base, doesn’t want to be left behind.

Kubernetes is the key to multicloud, and with Heptio, VMware now has added significant talent and capability to help organizations make multicloud a reality.

Sean Michael Kerner is a senior editor at eWEEK and InternetNews.com. Follow him on Twitter @TechJournalist.

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Enterprises across the world are facing an uphill struggle with managing their increasing data growth, and academic institutions are no exception. Indeed, many universities face unique challenges in this area.

The Challenge is that so many fields of study now generate mountains of data which require ever-growing volumes of storage. Whether it’s physics calculations or data collected from the Large Hadron Collider (LHC) at Cern or Teaching Hospitals that are archiving MRI scans, X-Ray images and ultrasound recordings all of it takes up storage space and adds to the IT budget bottom line. And that doesn’t factor in the data that students are storing. Schools of the Arts are storing images of artwork, music, and video, just to name a few.

In order to meet these challenges, universities have started looking at software-defined software solutions. And many have chosen SUSE® Enterprise Storage as their solution of choice. Powered by Ceph technology, SUSE® Enterprise Storage offers greater flexibility, easier management, and more granularity in adding storage capacity. It is highly scalable and resilient, cost-effective, and eliminates vendor lock-in. Whether it’s Heavy Matter or Heavy Data let us help you solve your storage challenges with SUSE® Enterprise Storage.

To learn more about how Academia is working with SUSE® and software-defined storage go HERE

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Samsung will start a private beta of its Linux on DeX product on November 12 that will allow users to open an Ubuntu desktop from a Note 9.

Linux on DeX will only support one Ubuntu version, namely 16.04 LTS, and only works on Note 9 and Tab S4 devices with at least 8GB of storage and more than 4GB of memory, Samsung said. All packages must be compiled for Arm 64.

See: Samsung DeX 101: Turn a Galaxy phone into your primary computer

Samsung is claiming the new Linux on DeX environment can be used by developers to program “on the go”, and, in the case of the Tab S4, bring a fuller environment to a tablet.

“Linux on DeX may slow down or suddenly be turned off in case of lack of memory,” the Korean electronics giant warned.

Those interested in the beta can sign up prior to the beta starting.

Whereas DeX originally required a dock, Samsung’s latest devices only need a USB-C to HDMI cable.

Also read: Convergence returns as former players exit

Earlier this week, Samsung showed off its Infinity Flex display foldable phone.

In its unfolded state, the display is 7.3 inches, with a resolution of 1,536×2,152 pixels, ZDNet’s sister site CNET reported, and when folded the resolution becomes 840×1,960 pixels.

At the same time, the company announced it would be opening up its Bixby assistant to developers.

Related Coverage

Citrix brings unified workspace app to Samsung DeX-enabled devices

The new Citrix Workspace app brings customers new capabilities, such as secure access to SaaS applications, when using a mobile device for desktop computing.

At Mobile World Congress, Samsung advances with DeX Pad and may just will it to success

Samsung’s efforts with the DeX Pad and ability to stick with a concept and iterate may ultimately mean that one compute device can do all for most people.

Samsung DeX 101: Turn a Galaxy phone into your primary computer

Samsung’s Galaxy smartphones are extremely powerful, and with the DeX platform, these phones can power a desktop experience that includes productivity, creativity, and communication applications.

Samsung marries new Galaxy Tab S4 with DeX for productivity boost

Samsung Electronics has unveiled its flagship Android tablet, the Galaxy Tab S4, with Samsung DeX connectivity for the first time on a tablet, giving consumers multi-screen options and a powered-up S Pen to cater to the enterprise and professionals.

How Samsung’s DeX could transform workplace productivity (TechRepublic)

Samsung’s Jonathan Wong explains how your mobile phone could power a PC-like productivity experience.

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Fedora Xfce Live is an open source operating system that uses the lightweight Xfce desktop environment on top of the latest upstream Fedora release, providing users with a low on resources distribution of Linux that can be used on older computers.

Distributed as 32-bit and 64-bit Live CDs

You can download this custom Fedora distribution through Softpedia’s secure servers or from its official website (see link above) as two Live CD ISO images, one for each of the supported hardware platforms (64-bit and 32-bit). Please note that you must burn the ISO image onto CD discs or write them on USB flash drives of 1GB or higher capacity in order to boot them from the BIOS of a computer.

Boot options

The Live CDs use a standard boot menu that can also be found on many other official or unofficial Fedora spins. The main emphasis is on starting the live environment without too much fuss. For more advanced options, such as the ability to test the RAM, boot an existing operating system from the first disk drive or start the live session in safe graphics mode, you can access the Troubleshooting entry.

A lightweight and easy to use desktop environment powered by Xfce

As its name suggests, the default and only desktop environment of the Fedora Xfce Live CD distro is Xfce, a lightweight graphical desktop interface that comprises of a top panel (taskbar) and a bottom dock (application launcher).

Includes a lightweight set of open source applications

As expected from a lightweight distribution, the default applications are carefully selected to also be lightweight for the system. Among some of the most important ones, we can mention Claws Mail email client, Liferea news reader, Midori web browser, Pidgin IM client, Transmission torrent downloader, Parola media player, Pragha audio player, and AbiWord word processor.

Bottom line

Summing up, the Xfce edition of Fedora Linux is a very stable and fast operating system suitable for low-end machines and computers with old and semi-old hardware components.

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In the Linux operating system world, container technology has existed for quite some time, reaching back over a decade to the initial ideas around separate namespaces for file systems and processes. At some point in the more recent past, LXC was born and became the common way for users on Linux to access this powerful isolation technology hidden within the Linux kernel.

Even with LXC masking some of the complexity of assembling the various technology underpinnings of what we now commonly call a “container”, containers still seemed like a bit of wizardry, and other than niche uses for those versed in this art of containers, it was not broadly used by the masses.

Docker changed all this in 2014 with the arrival of new, developer-friendly packaging of this same Linux kernel technology that powered LXC—in fact, early versions of Docker used LXC behind the scenes – and containers truly came to the masses as developers were drawn to the simplicity and re-use of Docker’s container images and simple runtime commands.

Read more at InfoQ

Click Here!

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How to Install Seafile on Debian 9

9th November 2018

Seafile is an open source cloud storage system for storing files on the Seafile server and synchronize the files between multiple computers or mobile devices using the Seafile client. Using Seafile you can also create groups with file syncing and start discussions with your team to enable easy collaboration.

In this tutorial, we will show you how to install Seafile on a Debian 9 Linux virtual server with MySQL.

Install dependencies

Log in to your Debian 9 VPS via SSH as user root and make sure that all packages are up-to-date.

ssh root@Server_IP_Address -p Port_Number
apt-get update
apt-get upgrade

Install the following dependencies needed by Seafile:

apt-get install python2.7 libpython2.7 python-setuptools python-imaging python-ldap python-urllib3 ffmpeg python-pip python-mysqldb python-memcache python-requests
pip install pillow moviepy

Install MySQL server

We will use MySQL as a database back-end for Seafile. If you already don’t have MySQL installed on your Debian 9 server you can install it by running the following command:

apt-get install mysql-server

When the MySQL installation is complete, issue the following command to secure your MySQL installation:

sudo mysql_secure_installation

Install Seafile

At the moment of writing this article, the latest stable version of Seafile is version 6.3.4.

Download the Seafile archive from their official website using the following command:

mkdir /opt/seafile
cd /op/seafile
wget https://download.seadrive.org/seafile-server_6.3.4_x86-64.tar.gz

Once the download is complete run the following command to unpack the tar archive:

tar -xzf seafile-server_4.0.6_x86-64.tar.gz

Navigate to the seafile directory and run the setup script:

cd seafile-server-*
./setup-seafile-mysql.sh

The script will check your server and prompt you to press ENTER to continue

Checking python on this machine …
Checking python module: setuptools … Done.
Checking python module: python-imaging … Done.
Checking python module: python-mysqldb … Done.

—————————————————————–
This script will guide you to setup your seafile server using MySQL.
Make sure you have read seafile server manual at

https://github.com/haiwen/seafile/wiki

Press ENTER to continue
—————————————————————–

Next, you will be prompted to enter several information needed to configure Seafile, such as server name, IP address, listening port and seafile data directory.

What is the name of the server? It will be displayed on the client.
3 – 15 letters or digits
[ server name ] my-server

What is the ip or domain of the server?
For example: www.mycompany.com, 192.168.1.101
[ This server’s ip or domain ] my-seafile.com

Where do you want to put your seafile data?
Please use a volume with enough free space
[ default “/opt/seafile-data” ]

Which port do you want to use for the seafile fileserver?
[ default “8082” ]

When asked to choose a way to initialize Seafile databases, select 1 .

——————————————————-
Please choose a way to initialize Seafile databases:
——————————————————-

[1] Create new ccnet/seafile/seahub databases
[2] Use existing ccnet/seafile/seahub databases

[ 1 or 2 ] 1

Enter your MySQL root password when prompted and the script will create the necessary databases.

What is the host of mysql server?
[ default “localhost” ]

What is the port of mysql server?
[ default “3306” ]

What is the password of the mysql root user?
[ root password ]

verifying password of user root …
verifying password of user root … done

Enter the name for mysql user of seafile. It would be created if not exists.
[ default “seafile” ]

Enter the password for mysql user “seafile”:
[ password for seafile ]

Enter the database name for ccnet-server:
[ default “ccnet-db” ]

Enter the database name for seafile-server:
[ default “seafile-db” ]

Enter the database name for seahub:
[ default “seahub-db” ]

———————————
This is your configuration
———————————

server name: seafile
server ip/domain: my-seafile.com

seafile data dir: /opt/seafile/seafile-data
fileserver port: 8082

database: create new
ccnet database: ccnet-db
seafile database: seafile-db
seahub database: seahub-db
database user: seafile

Once the installation is completed the script will show the following output:

Generating ccnet configuration …

done
Successly create configuration dir /opt/ccnet.
Generating seafile configuration …

Done.
done
Generating seahub configuration …

—————————————-
Now creating seahub database tables …

—————————————-

creating seafile-server-latest symbolic link … done

—————————————————————–
Your Seafile server configuration has been finished successfully.
—————————————————————–

run seafile server: ./seafile.sh { start | stop | restart }
run seahub server: ./seahub.sh { start | stop | restart }

—————————————————————–
If you are behind a firewall, remember to allow input/output of these tcp ports:
—————————————————————–

port of seafile fileserver: 8082
port of seahub: 8000

When problems occur, Refer to

https://github.com/haiwen/seafile/wiki

for information.

You can now start SeaFile and SeaHub scripts and create your new SeaFile admin user:

./seafile.sh start

[10/20/18 14:48:18] ../common/session.c(132): using config file /opt/conf/ccnet.conf
Starting seafile server, please wait …
Seafile server started

Done.

./seahub.sh start

LANG is not set in ENV, set to en_US.UTF-8
LC_ALL is not set in ENV, set to en_US.UTF-8
Starting seahub at port 8000 …

—————————————-
It’s the first time you start the Seafile server. Now let’s create the admin account
—————————————-

What is the email for the admin account?
[ admin email ] admin@rosehosting.com

What is the password for the admin account?
[ admin password ]

Enter the password again:
[ admin password again ]

—————————————-
Successfully created seafile admin
—————————————-

Seahub is started

Done.

Once the Seahub server is started, you can access Seafile at http://your_domain_or_ip.com:8000 and log in with your admin account.

Create systemd unit

We will create a systemd unit files to be able to start all Seafile services at system boot.

nano /etc/systemd/system/seafile.service

Paste the following lines:

[Unit]
Description=Seafile
# add mysql.service or postgresql.service depending on your database to the line below
After=network.target

[Service]
Type=forking
ExecStart=/opt/seafile/seafile-server-latest/seafile.sh start
ExecStop=/opt/seafile/seafile-server-latest/seafile.sh stop
User=seafile
Group=seafile

[Install]
WantedBy=multi-user.target

nano /etc/systemd/system/seahub.service

[Unit]
Description=Seafile hub
After=network.target seafile.service

[Service]
Type=forking
# change start to start-fastcgi if you want to run fastcgi
ExecStart=/opt/seafile/seafile-server-latest/seahub.sh start
ExecStop=/opt/seafile/seafile-server-latest/seahub.sh stop
User=seafile
Group=seafile

[Install]
WantedBy=multi-user.target

Once the unit files are created enable the services to start on system boot by running the following commands:

sudo systemctl enable seafile.service
sudo systemctl enable seahub.service

That is it, SeaFile has been successfully installed on your Debian 9 server.

You don’t need to Install Seafile on Debian 9 if you use one of our Seafile Hosting Services, in which case you can simply ask our expert Linux admins to set up Seafile on your Debian 9 server for you. They are available 24×7 and will take care of your request immediately.

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