Software Engineering & Security Notes

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• 

  Nickolas Golubev 19:36 on December 27, 2013 Permalink | Reply  

  Installing XSpice (xf86-video-qxl-0.1.0) onto Redhat Enterprise Server 6 RHEL6 

  I have been working on getting XSpice enabled on x64 RHEL6. XSpice is an X11 driver that allows for remote connections much like VNC. This install is not trivial as XSpice is still an experimental product so there are only packaged / repoed versions of it for Fedora Core.

  Firstly RHEL optional RPMS must be enabled

  #nano /etc/yum.repos.d/redhat.repo

  enable rhel-6-server-optional-rpms

  Now install a bunch of packages.

  #yum install kdebase
#yum install xorg*
#yum install spice-server-devel
#yum install python-argparse
#yum install xorg-x11-util-macros*
#yum install spice-server-devel spice-protocol

  Now download / make / install randr:

  #wget http://cgit.freedesktop.org/xorg/driver/xf86-video-qxl/snapshot/wip/randr12.v1.tar.gz
#tar zxvf randr12.v1.tar.gz
#cd wip/randr12.v1
#./autogen.sh
#./configure
#make install

  Now get xf86-video-qxl-0.1.1 and xf86-video-qxl-0.1.0

  #wget http://cgit.freedesktop.org/xorg/driver/xf86-video-qxl/snapshot/xf86-video-qxl-0.1.1.tar.gz
#tar zxvf xf86-video-qxl-0.1.1.tar.gz

  #wget http://cgit.freedesktop.org/xorg/driver/xf86-video-qxl/snapshot/xf86-video-qxl-0.1.0.tar.gz
#tar zxvf xf86-video-qxl-0.1.0.tar.gz

  Compile the 0.1.0 version (the 0.1.1 would not configure / make due to a library dependency issue with RHEL6)

  #cd xf86-video-qxl-0.1.0
#autoreconf -i && ./configure --enable-xspice && make
#make install
#cp src/.libs/spiceqxl_drv.so /usr/lib64/xorg/modules/drivers/

  I copied the XSpice startup script and X11 config from xf86-video-qxl-0.1.1 because it has more startup options yet is backwards compatible with xf86-video-qxl-0.1.0

  #cd ..
#cp xf86-video-qxl-0.1.1/scripts/Xspice /home/normal_user_account/
#cp xf86-video-qxl-0.1.1/examples/spiceqxl.xorg.conf.example /etc/X11/spiceqxl.xorg.conf
chown normaluser.normaluser /home/normal_user_account/Xspice


  Now add iptable rules if you have iptables enabled

  #nano /etc/sysconfig/iptables
-F INPUT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 5900:5950 -j ACCEPT
#service iptables restart

  Now drop back to a normal, non-root account and run the XSpice script:
  
#exit
#cd ~
#./Xspice --port 5903 :4.0 --xsession /usr/bin/startkde --disable-ticketing

  I am starting a KDE session instead of a GNOME because there seems to be a bug preventing GNOME from working with Xspice (https://bugzilla.redhat.com/show_bug.cgi?id=970622)

  Warning:
  Do not run this as root! there is no password and it should just be used for testing unless you enable stronger authentication.

  You can now connect using the virt-viewer client (http://www.spice-space.org/download.html)

   

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• 

  Nickolas Golubev 22:35 on December 5, 2013 Permalink | Reply
  Tags: admin ( 2 ), java, jdk, maven, rhel ( 2 ), rhel6 ( 2 )   

  Installing MAVEN on Red Hat Enteprise Server 6.x (rhel6) 

  Just had to install maven on a rhel6 box… not sure why it is not in the yum / up2date repo.

  First you need JDK7.x:

  get it at: http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html

  “Linux x64 116.91 MB jdk-7u45-linux-x64.rpm”

  install the RPM using

  rpm -Uvh jdk-7u45-linux-x64.rpm

  then remove openJRE from the alternatives list:

  alternatives --list java
alternatives --remove java /usr/lib/jvm/jre-1.7.0-openjdk.x86_64/bin/java

  Double check the java version:

  java -version

  It should say:
  java version "1.7.0_45"
Java(TM) SE Runtime Environment (Build 1.7.0_45-b18)
  …

  Now go to the Maven site:

  and get the latest version of 2.x or 3.x (using 2.2.1 here)

  wget http://apache.osuosl.org/maven/maven-2/2.2.1/binaries/apache-maven-2.2.1-bin.tar.gz

  and install:
  tar zxvf apache-maven-2.2.1-bin.tar.gz
mv apache-maven-2.2.1 /opt/
ln -s /opt/apache-maven-2.2.1 /opt/maven
nano /etc/profile.d/custom.sh

  paste this:

  #!/bin/bash
export JAVA_HOME=/usr/java/latest
export MAVEN_HOME=/opt/maven
export M2_HOME=$MAVEN_HOME
export PATH=$PATH:$MAVEN_HOME/bin

  -save (ctrl-o)

  -new session

  test:

  mvn --version

  Should say:
  
Apache Maven 2.2.1 …

   
• 

  Nickolas Golubev 22:27 on December 4, 2013 Permalink | Reply
  Tags: import, move, wordpress   

  Just moved the whole site from blogger.com to a wordpress site on my own hosting provider. Seems like a smooth transition!