Blog Archives

How to Install nodejs server on EC2 AWS centos 6

Hey, Download nodejs server from source  http://nodejs.org/download/ Look for the “Source Code” and copy the link. cd /usr/src wget http://nodejs.org/dist/v0.10.26/node-v0.10.26.tar.gz tar -xzvf node-v0.10.26.tar.gz Now before compiling , lets install the relevant dependencies. yum -y groupinstall “Development Tools” yum -y install screen Right

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Posted in NodeJS

How to create an Impala table using Parquet file format (Cloudera Impala)

Hey, The whole thing behind Impala tables is to create them from “impala-shell” using the “hive metastore” service you will be able to access those tables from HIVE \ PIG It is recommended to run INSERT statements using HIVE (it

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Posted in BigData

ElasticSearch 1.0, Logstash changes – how to complete the upgrade

Hey, ElasticSearch has recently announced on it’s new version 1.0 which includes many new features as well as stability and availability fixes. The ones who worked with Logstash shippers or Logstash indexers that were shipping logs into Elastic search, probably

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Posted in ElasticSearch

CouchDB Internals

Here are few Anecdotes about files and thier meaning on CouchDB server Log files: CouchDB’s main log file, containing all HTTP requests coming from Futun interface (web interface) or from you custom-application which communication with Couch through it’s API \ CURL

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Posted in CouchDB

CouchDB Error : {badmatch,{error,eacces} {couch_file,init,1} …

Hey, So today we had the following issue with our CouchDB environment. First we were requsted to copy an exsiting environment of couchDB to another servers. Few basic steps 1. Stop CouchDB (Optional) 2. tar -czvf /usr/local/var/lib/couchdb couchdbs 3. copy the

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Posted in CouchDB

What is NSS and how to use it ?

NSS – Named Saved Systems An NSS is a copy of an operating system’s kernel or nucleus, which that has been saved in a chunk of CP’s storage. Using an NSS to IPL an operating system has several advantages over using disks.

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Posted in z/VM, zlinux

Understanding where DASD configuration resides

Actually, I had wrote that article before a long time ago even before I opened that blog, And after series of extensive improvements I’m glad to publish it. This article was wrriten in order to clarify how to manage dasd

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Posted in z/VM, zlinux