Graylog 2.3 installation with Elasticsearch5.5.X

I am going to install Graylog server 2.3  in Ubuntu 14.
For graylog setup we need to install following Mongo DB and ElasticSearch.
First install oracle jdk 8

sudo apt-get install python-software-properties
sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update

Oracle JDK 8:

sudo apt-get install oracle-java8-installer

To check : $ java -version

Next Elasticsearch :

From graylog 2.3 it is supporting elasticsearch 5.X

Download and install the Debian package

$wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-5.5.0.deb
$sha1sum elasticsearch-5.5.0.deb
$sudo dpkg -i elasticsearch-5.5.0.deb
$sudo update-rc.d elasticsearch defaults 95 10

Elasticsearch can be started and stopped using the service command:

$sudo -i service elasticsearch start
$sudo -i service elasticsearch stop

Install MongoDB
Import the public key used by the package management system
$sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 0C49F3730359A14518585931BC711F9BA15703C6

Create a /etc/apt/sources.list.d/mongodb-enterprise.list file for MongoDB
$echo "deb [ arch=amd64 ] http://repo.mongodb.com/apt/ubuntu trusty/mongodb-enterprise/3.4 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-enterprise.list
$sudo apt-get update
$sudo apt-get install -y mongodb-enterprise

Graylog
$wget https://packages.graylog2.org/repo/packages/graylog-2.3-repository_latest.deb
$dpkg -i graylog-2.3-repository_latest.deb
$sudo apt-get update && sudo apt-get install graylog-server

For  Graylog authentication  to set username password by below steps: 

$cd /etc/graylog/server/

$vi server.conf

$apt-get install pwgen

 $pwgen -N 1 -s 96

You ll get like below ..past in server.conf

 a9ft39dMEPTmZlXOFTM4tXiD7V02StfYVNodJlgA0XmeMofVh5B3CwgngAVXXjJrJLtdiRHzG0ouI4LabzuZ7mUNH1gWSBUA

For password try below steps here admin is my password

 $echo -n admin | sha256sum

 8c6976e5b5410415bde908bd4dee15dfb167a9c873fc4bb8a81f6rf2ab48a918

Then save the above changes and start graylog server

 service graylog-server start
open
http://localhost:9000  you will get below page give login credentials which you given in graylog server.conf file

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R packages installation error solved

Most of the common error we are getting below  in R at the time of installing in R packages like(rJava,ggplot2...)

Warning message:
package ‘rJava’ is not available (for R version 3.0.2)

In this post we ll see how to resolve this error.

First login as root user 

and type R and you ll get r prompt

>

then type 

 install.packages("rJava")

it ll ask package mirror location give any one it ll installed without any issue.

To confirm the package installation 

try below line

library(rJava)

It won't throw any message so its installed .

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Install R in Redhat 7.2

Installation of R in redhat is simple.

First download the below file

wget http://public-yum.oracle.com/public-yum-ol7.repo

open the downloaded file and change enabled property into 1

vi public-yum-ol7.repo

[ol7_latest]
enabled=1

[ol7_addons]
enabled=1

[ol7_optional_latest]
enabled = 1

then

 sudo yum install R.x86_64

Now R is installed.. 

typr R you ll get 

R>

error:

If you are getting below error 

Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle

GPG key retrieval failed: [Errno 14] curl#37 - "Couldn't open file /etc/pki/rpm-gpg/RPM-GPG-KEY-oracle"

Try the below command to download oracle gpg file

wget http://public-yum.oracle.com/RPM-GPG-KEY-oracle-ol7 -O /etc/pki/rpm-gpg/RPM-GPG-KEY-oracle

then

sudo yum install R.x86_64

issue has resolved..

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