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Converting Oracle Linux v7.0 VMs to HVM Mode
Customers who wish to upgrade existing Linux guests to versions which now operate in HVM mode (that is, RHEL 7, CentOS 7, Oracle Linux 7, and Ubuntu 14.04) should perform an in-guest upgrade. At this point, the upgraded Guest will only run in PV mode - which is not supported and has known issues. Customers should run the provided script to convert the newly upgraded guest to the supported HVM mode. See the XenServer 6.5 VM User’s Guide for details for the procedure.

On the XenServer host, open a local shell, log on as root, and enter the following command:
/opt/xensource/bin/pv2hvm <vm_name>

/opt/xensource/bin/pv2hvm <vm_uuid>

Customers should restart the VM to complete the process.

However, for Oracle Linux 7.0 guests, after performing the in-guest upgrade, GRUB2 is installed but is not configured (/boot/grub2/ is empty), and will cause errors during VM Boot. Therefore for before applying the upgrade script, customers with should follow the procedure below.
CentOS  RHEL  CentOS7  Citrix  XenServer  kbarticle  PV  HVM  PVHVM  PDF  reference  upgrade  GitHub  convert  GRUB 
2 days ago by coffeebucket
pykickstart/kickstart-docs.rst at master · rhinstaller/pykickstart · GitHub
Many system administrators would prefer to use an automated installation method to install Fedora or Red Hat Enterprise Linux on their machines. To answer this need, Red Hat created the kickstart installation method. Using kickstart, a system administrator can create a single file containing the answers to all the questions that would normally be asked during a typical installation.

Kickstart files can be kept on a server system and read by individual computers during the installation. This installation method can support the use of a single kickstart file to install Fedora or Red Hat Enterprise Linux on multiple machines, making it ideal for network and system administrators.

The Fedora installation guide at has a detailed section on kickstart.
GitHub  Kickstart  Anaconda  RHEL  CentOS  Fedora  documentation  reference 
4 days ago by coffeebucket
Animated d3 word cloud · GitHub
"An example of how to animate a d3-cloud word cloud."
code  software  programming  web  javascript  reference  github 
17 days ago by msszczep
Crypto Projects that Might not Suck
Nice and useful list - Crypto Projects that Might not Suck
hacking  crypto  github  reference 
23 days ago by lorenzo
GitHub - wsargent/docker-cheat-sheet: Docker Cheat Sheet
"With Docker, developers can build any app in any language using any toolchain. “Dockerized” apps are completely portable and can run anywhere - colleagues’ OS X and Windows laptops, QA servers running Ubuntu in the cloud, and production data center VMs running Red Hat.

Developers can get going quickly by starting with one of the 13,000+ apps available on Docker Hub. Docker manages and tracks changes and dependencies, making it easier for sysadmins to understand how the apps that developers build work. And with Docker Hub, developers can automate their build pipeline and share artifacts with collaborators through public or private repositories.
GitHub  Docker  reference 
25 days ago by coffeebucket
15 rules for communicating at GitHub - Ben Balter
How folks at @Github use Github for communicating internally: On async comms, open culture, text vs meetings & more.
github  Reference  work-culture  Article  Inspiration  MustRead  Mapbox 
25 days ago by rasagy
krasimir/react-in-patterns: List of design patterns/techniques used while developing with React
react-in-patterns - :books: List of design patterns/techniques used while developing with React
javascript  patterns  tutorial  react  reactjs  framework  from:ifttt  github  js  reference 
29 days ago by tranqy

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