Polipo is a single-threaded non blocking caching web proxy with very modest resource needs
Archive for Juli, 2015
Raspberry Pi – with Polipo as a caching web proxy
Sonntag, Juli 26th, 2015HP Enterprise Services – hier sollen Mitarbeiterinnen und Mitarbeiter nicht mehr mit T-Shirt und kurzer Hose in die Arbeit kommen
Samstag, Juli 25th, 2015Bergen Hochfelln – online webcam
Samstag, Juli 25th, 2015
Microsoft Windows 10 Pro – kostet um die € 280
Samstag, Juli 25th, 2015
München der Hofbräukeller – online webcam
Freitag, Juli 24th, 2015
Linux Partitions-Alignment – so richten Sie Ihre Disk optimal ein
Freitag, Juli 24th, 2015
Linux Partitions-Alignment – orientiert sich eine Partition nicht an den Grenzen der Speicherseiten einer Disk dann passen die Dateisystemblöcke nicht in die Seiten und die Disk hat unnötig viel zu tun. Dieses Kommando gibt den Versatz (Offset) der abgefragten Partition aus und wenn es eine Null zurückgibt liegt diese perfekt auf den Speicherzellen
# /sbin/blockdev —getalignoff/dev/sda1
Kliniken des Bezirks Oberbayern (kbo) Lech-Mangfall-Kliniken
Donnerstag, Juli 23rd, 2015Fujitsu Primergy CX2570 M1 LC – with Cool-Central Liquid Cooling Technology
Donnerstag, Juli 23rd, 2015
Wireless Carjackers – hackers remotely kill a Jeep on the Highway
Donnerstag, Juli 23rd, 2015
Raspberry Pi – with a based food ordering button
Mittwoch, Juli 22nd, 2015
push4food – a Raspberry Pi based food ordering button
München Städtische Kliniken – 1900 Jobs in Gefahr und die Frage wie geht es weiter
Mittwoch, Juli 22nd, 2015
Innsbruck Airport – online webcam
Montag, Juli 20th, 2015
Microsoft Security Bulletin MS15-078 Critical Patch – Vulnerability in Microsoft Font Driver Could Allow Remote Code Execution (3079904)
Montag, Juli 20th, 2015
The security update addresses the vulnerability by correcting how the Windows Adobe Type Manager Library handles OpenType Fonts – for more information about this update see Microsoft Knowledge Base Article 3079904
Gehalt in Kliniken – 86.000 Euro Jahresgehalt bekommen IT-Chefs in Krankenhäusern und Kliniken durchschnittlich
Montag, Juli 20th, 2015Raspberry Pi Hadoop Cluster – to get into distributed computing and Big Data processing
Sonntag, Juli 19th, 2015 
Raspberry Pi Hadoop Cluster is built up by a number of components and Open Source frameworks which makes it quite flexible and modular – before diving deeper into Hadoop it is easier to view it as two main parts – the data storage (HDFS) and the data processing (MapReduce)
# vi /etc/network/interfaces
iface eth0 inet static
address 192.168.1.201(-204)
netmask 255.255.255.0
gateway 192.168.1.254
# vi /etc/resolv.conf
nameserver 192.168.1.254
# apt-get update
# apt-get upgrade -y
# rpi-update
# vi /etc/dphys-swapfile
CONF_SWAPSIZE=512
# dphys-swapfile setup
# dphys-swapfile swapon
# java -Version
# addgroup hadoop
# adduser –ingroup hadoop hduser
# adduser hduser sudo
# su – hduser
# mkdir .ssh
# ssh-keygen -t rsa -C hduser@JSHOHadoop01
# cat .ssh/id_rsa.pub | ssh hduser@JSHOHadoop01 ‚cat >> .ssh/authorized_keys‘
# su – hduser
# ssh JSHOHadoop01
# su – root
# wget http://apache.mirrors.spacedump.net/hadoop/core/hadoop-1.2.1/hadoop-1.2.1.tar.gz
# tar -xvzf hadoop-1.2.1.tar.gz -C /opt/
# cd /opt
# mv hadoop-1.2.1 hadoop
# chown -R hduser:hadoop hadoop
# vi /etc/bash.bashrc
export JAVA_HOME=$(readlink -f /usr/bin/java | sed „s:bin/java::“)
export HADOOP_INSTALL=/opt/hadoop
export PATH=$PATH:$HADOOP_INSTALL/bin
# su – hduser
# hadoop Version
# vi /opt/hadoop/conf/hadoop-env.sh
export JAVA_HOME=$(readlink -f /usr/bin/java | sed „s:bin/java::“)
export HADOOP_HEAPSIZE=250
export HADOOP_DATANODE_OPTS=“-Dcom.sun.management.jmxremote $HADOOP_DATANODE_OPTS -client“
Single Node
# vi /opt/hadoop/conf/core-site.xml
<configuration>
<property>
<name>hadoop.tmp.dir</name>
<value>/hdfs/tmp</value>
</property>
<property>
<name>fs.default.name</name>
<value>hdfs://localhost:54310</value>
</property>
</configuration>
# vi /opt/hadoop/conf/mapred-site.xml
<configuration>
<property>
<name>mapred.job.tracker</name>
<value>localhost:54311</value>
</property>
</configuration>
# vi /opt/hadoop/conf/hdfs-site.xml
<configuration>
<property>
<name>dfs.replication</name>
<value>1</value>
</property>
</configuration>
# su – root
# mkdir -p /hdfs/tmp
# chown hduser:hadoop /hdfs/tmp
# chmod 750 /hdfs/tmp
# su – hduser
# hadoop namenode -Format
# su – hduser
# /opt/hadoop/bin/start-dfs.sh
# /opt/hadoop/bin/start-mapred.sh
# jps
# hadoop jar /opt/hadoop/hadoop-examples-1.2.1.jar wordcount /license.txt /license-out.txt
Multiple Node