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Installing Hadoop for Single Node Cluster
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in this video we are going to discuss
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installing Hadoop for single node
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cluster and we shall follow the steps
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one by one for your easy understanding
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so that also you can do the same at your
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end so let us start the discussion on
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this installation now at first we are
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going for the installation of SSH and
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our sync but before going for that we'll
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be discussing three terminologies the
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first one is the secure shell that is
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SSH what is that then we shall go for
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our sync that is a remote sync and the
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last one is the passphrase so let us go
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for the respective definitions so is
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this SSH is a protocol for cryptographic
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Network for operating network services
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securely over an unsecured Network so
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that is the definition of SSH that means
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it is a protocol for cryptographic
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Network for operating network services
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securely on an unsecured Network next
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one is a remote sync that is a heart
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sync so is a remote and local file
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synchronization tool so sometimes it may
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happen that the two files which is at
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the local and at the remote the file
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content may have got changed then it is
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not transferring the full file but it is
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transferring that portion of the file
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where the updates were done so depending
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upon that the remote sync will work and
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obviously that will have the less amount
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of data transferred so it uses an
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algorithm that minimizes the amount of
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data copied by moving the portions of
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the files that have got some changes
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next one is a passphrase so a passphrase
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is a sequence of words or other text
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used to control the access of one
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computer system and this particular
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computer system or program are also on
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data a passphrase is similar to a
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password in usage but it generally
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required for the added security of our
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data so these are the three
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terminologies are there now let us go
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step by step one by one for the
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installation of Hadoop for single
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node cluster so here we are having two
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operations have to be done so first one
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is the install SSH and our sink and then
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you shall go for SSH without passphrase
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setup so to do this one we required to
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issue these two commands that is sudo
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apt - get install SSH
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then sudo apt - get install our sink so
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these two commands are to be executed to
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install SSH and our sink on our system
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these two commands were executing from
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that dollar prompt so ssh without parse
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phrase setup so the comment will be ssh
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- qijin - t RSA after that we are
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supposed to press ENTER for three times
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without entering anything so three times
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entered is to be pressed then we shall
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go for cat then SS dot SSH / ID
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underscore RSA dot pops so this
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particular file is there hundred the
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under the home path this particular file
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we are doing the cat means where it is
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printing the content of the file but not
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we are not printing the content of the
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file on the console we are redirecting
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it to this respective file in this
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particular folder existing so this
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command has to be executed then SSH
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localhost
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so these two commands are to be executed
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after pressing enter three times issuing
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this command now open the browser so in
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the Linux will be having one browser
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open the browser and go to this
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particular link so this link has been
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created has been given here so just copy
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this particular link and type this
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particular link at the URL of that
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browser and then click on the
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highlighted link so here you can find if
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you put this particular link on the
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browser URL this web page will get
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opened and this particular web page is
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having this particular file that is a
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hadoop - two point four point one dot
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dot dot g jet so this is a file which
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has to be highly huge has been
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highlighted here and it has to be
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click there now open up the terminal to
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open up the terminal we are supposed to
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go for control all dirty and then create
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a directory called the Hadoop at the
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home directory so how to create this
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directory just issue the command mkdir
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hadoop so just issue this command mkdir
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hadoop then one directory will get
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opened now edit the slash etc' slash
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profile file and add the following lines
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so profile file is existing under the
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folder that is slash it is a slash
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so under this folder there is one file
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that is a profile file where these lines
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are to be written you can open this file
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in G edit and then we can type this
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lines and then save and exit from the
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g-eight it and then to make it effective
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on to the system whatever you have typed
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extra just execute this file dot slash
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etc' slash profile so in this way you
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can execute the file so whatever the
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changes you did in the profile file the
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corresponding changes will be obtained
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onto the system now copy the downloaded
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hadoop that is a hadoop - two point four
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point one dot dot dot g jet so that file
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which we downloaded from the respective
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URL which i shown you earlier into the
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hadoop directory and then go to this
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directory and using terminal and then
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enter the downloaded dot dot g jet file
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so just go to the download folder where
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you download it there and then copy
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those files and then now put those files
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under the hadoop folder and follow the
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lines to go to the hadoop directory so
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just go to the hadoop folder and the
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files which were copied from the
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downloaded folder to the Hadoop folder
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now execute our X Z F for the under
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operation so Todd X Z F and then hadoop
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start so the file which was copied from
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the downloaded folder to the Hadoop
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folder those dot dot G jet files will be
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entered here and this much we were going
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to do for this single node clustered
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installation on Hadoop thanks for
6:32
watching this video
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