Oracle Virtualization and Cloud Consulting
view counter

Linux Feed

Linux Support, Oracle Linux, Red Hat Enterprise Linux, SUSE, Oracle Unbreakable Enterprise Kernel and the Oracle Unbreakable Linux Support Program (ULN) resources, news, and support articles.

Accepting pull requests: the easy way

Recently I became a committer in the Apache CloudStack project. Last week when I was working with Rohit Yadav from ShapeBlue he showed me how he had automated the process with a Git alias. I really like it so I’ll share it here as well. First of all, pull requests are created on Github.com. Rohit created […]

Making XenServer and CloudStack sing and dance together (again)

XenServer and Apache CloudStack work nicely together and form an easy-to-go couple for many companies. However, not many people know that recent releases changed the cooperation between the two drastically. I’m not only talking about the shiny new Apache CloudStack 4.5 release, but the change was back ported to recent releases of 4.3.x and 4.4.x […]

fatal error: Python.h: No such file or directory

While trying to install some python module I got following exception:
fatal error: Python.h: No such file or directory
Reason for exception:
If you haven’t properly installed the header files and static libraries for python dev this issue may occur.
To resolve this issue install python-dev module by using following command:

Want to make the scroll bars larger in Gnome + Firefox?

I did too.
I love my Dell XPS 13 because it's small, lightweight and fast. I also surprisingly enjoy using the touchscreen (much more than I thought I would before purchasing). However, because of its 13" screen and the very high resolution, it makes the scroll bars in firefox and other applications extremely tiny. Combine that with my fat fingers, finding the scroll bar became even more difficult.
Feel my pain?
Here:
Edit the file ~/.gtkrc-2.0 (create it if it doesn't already exist)

WPS Office

WPS Office (also known as Kingsoft Office) is a freeware office suite having the same features as Microsoft Office (more of a Microsoft Office clone), installed by default on Ubuntu Kylin, the Ubuntu flavor developer for its Chinese users.The main three softwar

Linux – Ping multiple hosts using fping

 
fping is a ping like program which uses the Internet Control Message Protocol (ICMP) echo request to determine if a host is up.
With fping we can ping multiple hosts at a time. Use following command to ping multiple hosts:
$ fping -f IPsFiles.txt 
where in IPsFiles.txt I have multiple hots.
Below are some other examples of fping:
To ping a host/IP:
$ fping 192.168.2.2
Output:
192.168.2.2 is alive

OpenSSL is not properly installed on your system – Ubuntu

While trying to install some module I got error saying that “OpenSSL is not properly installed on your system ubuntu”.
I tried to reinstall this module after installing openssl, but no luck.
After debugging and exploring for a while I got to know that installing libssl-dev could resolve this issue, so I installed libssl-dev with following command:
$ sudo apt-get install libssl-dev
Now retried installation and it worked like charm.

How to add and delete a user from a Linux group

Being in the right Linux group expedites many system administration tasks, and will save you time. For example, the Apache web server logs have the following file ownership and permissions.

Resolving downed Interface Group on NetApp Cluster-Mode

netapp-cluster1::*> network port show
Auto-Negot  Duplex     Speed (Mbps)
Node   Port   Role         Link   MTU Admin/Oper  Admin/Oper Admin/Oper
------ ------ ------------ ---- ----- ----------- ---------- ------------
netapp-cluster1-01
a0a    data         down  1500  true/-     auto/-      auto/-
e0a    data         up    1500  true/true  full/full   auto/1000
e0b    data         up    1500  true/true  full/full   auto/1000
e0c    data         up    1500  true/true  full/full   auto/1

view counter