Category Archives: Uncategorized

Serie of developing puppet and ansible learning environment using vagrant. Part 1

Here I am starting with describing how to install environment to learn puppet and ansible using vagrant Let’s go aim – set up Ansible server and Puppet server. In order to save resources I am gone to install both servers … Continue reading

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These Incredibly Important Skills Will Make You More Successful Over Time

  Source Skill is the unified force of experience, intellect and passion in their operation. John Ruskin could not have defined skill any better. When you strive to consistently improve your skills, you enjoy more success in life and at … Continue reading

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Деловая переписка на английском языке: фразы и советы

Source 1. Этикет Вне зависимости от того, с кем и на каком языке вы ведете переписку, не забывайте про правила email-этикета. 1. Четко укажите тему письма (Subject). По результатам исследования агентства Radicati Group, представители бизнеса получают до 80 электронных писем … Continue reading

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Basic hadoop configuration files

$ cd $HADOOP_HOME/etc/hadoop Edit core-site.xml <configuration> <property> <name>fs.default.name</name> <value>hdfs://localhost:9000</value> </property> </configuration> Edit hdfs-site.xml <configuration> <property> <name>dfs.replication</name> <value>1</value> </property> <property> <name>dfs.name.dir</name> <value>file:///home/hadoop/hadoopdata/hdfs/namenode</value> </property> <property> <name>dfs.data.dir</name> <value>file:///home/hadoop/hadoopdata/hdfs/datanode</value> </property> </configuration> Edit mapred-site.xml <configuration> <property> <name>mapreduce.framework.name</name> <value>yarn</value> </property> </configuration>   Edit yarn-site.xml <configuration> <property> … Continue reading

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First steps in MongoDB

Step1. Installation. The mongodb-org package does not exist within the default repositories for CentOS. However, MongoDB maintains a dedicated repository. Let’s add it to our server. sudo vi /etc/yum.repos.d/mongodb-org.repo /etc/yum.repos.d/mongodb-org.repo [mongodb-org-3.2] name=MongoDB Repository baseurl=https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/3.2/x86_64/ gpgcheck=1 enabled=1 gpgkey=https://www.mongodb.org/static/pgp/server-3.2.asc yum repolist sudo … Continue reading

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Не бесите вселенную.

Вот я иногда думаю, что там, на небе, собрался молодой творческий коллектив. Работа у них такая. Креативная. Помогать людям воплощать мечты. В понедельник в 9:00 у них планерка и обсуждение текущих мечт. Начальник отдела зачитывает новые поступления желаний с планеты … Continue reading

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SQL cheat list

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1. COMPUTING RECENCY, FREQUENCY, MONETARY VALUE

# Load text file into local variable called ‘data’ > data = read.delim(file = ‘e:/courses/Big_data/R/Marketinganalzse/purchases.txt’, header = FALSE, sep=’\t’, dec=’.’) # Display what has been loaded. > head(data) V1 V2 V3 1 760 25 2009-11-06 2 860 50 2012-09-28 3 … Continue reading

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Creating first and simple table in HBase

A new HBase table is able to create using HBase shell or Java API. Create table in HBase:  =>  create ‘tablename’, {NAME => ‘columnname’}   ================ ! Here we are creating table and specifying the name of table and defining … Continue reading

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