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Category Archives: Linux

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Disable Tuned services in RHEL 7 – Hadoop Cluster best practice

Hadoop, LinuxBy Boopathi KApril 15, 20182 Comments

Tune you Linux OS to maximize the Hadoop Cluster performance by disabling “Tuned Daemon” in RHEL 7 OS. If you are setting up Hadoop Cluster in RHEL 7 servers, then you should disable the Tuned daemon Service which comes as default daemon in RHEL 7 version of Linux. Tuned daemon is introduced to boots the…

How to Enable Trace logs in Unix ODBC driver

LinuxBy Boopathi KMay 30, 2016Leave a comment

Enabling ODBC Trace logs Lets see how to enable Trace logs for Unix ODBC driver. Unix ODBC is Open Database connectivity, a Driver Manager. Using Unix Driver manager you can connect the Database Application to the ODBC Database Driver. In some cases you want to capture the of ODBC driver. It is not recommended to…

Load SSH Banner message while user login

LinuxBy Boopathi KMay 24, 2016Leave a comment

SSH Banner When we login to remote Linux machine, In Some machines we may see SSH banner messages printed, while we enter our username or after login. Here we are going to see both methods, but these messages are going to be static messages only. We will talk about dynamic messages in my next post.…

Linux basic commands from scratch part 2

LinuxBy Boopathi KJanuary 7, 2014Leave a comment

So far we have seen basic directory commands. Now let’s  look into file commands. First let’s see Command: This command is mainly used to create files. All kinds of files can be created using this command. By using this single command, linux system allows us to create one or more files at the same time.…

Linux basic commands from scratch part 1

LinuxBy Boopathi KDecember 11, 2013Leave a comment

What is shell in linux ? Shell is command line interpreter, that directly interacts with the operating system. Let us start with basic linux commands. open your Terminal. Shortcut alt+ctrl+t. To know which shell you are currently using type the following command in your terminal. . To know the version of your version of your shell…

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    • Kubernetes
    • Security
    • Open Source
    • Linux
    • Neo4J
  • Big Data
    • ElasticSearch
    • Hadoop
    • HBase
    • Teradata
    • Hive
    • Sentry
  • Web
    • WordPress
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