Transactions in METAMASK:Ropsten Test Network Ethereum

1. While at https://anupriti.blogspot.com/2019/01/metamask-extension-in-chromeinstallation.html we have installed metamask,now in this post we do a transaction of ethereum.While at the beginning learning stage we ideally should not be playing with real ethers,so there is a provision to get test ethers and do some dummy transactions to get a feel of how it actually works.

Firstly,we change the network choice from the Main Ethereum Network to Ropsten Test Network as seen in the screen shot below:

 Then we visit https://faucet.metamask.io/

 Simply request ether.I requested twice. :-)

 So,I got two ethers

In the transactions part,we see the links and while we click on any,we get to see the details of the transaction that reflect along with other details live from the ropsten test network explorer

 The transactions details as below :

 The details of Gas to be debited as seen below :

 So,now minus 1 ether and some gas,I am left with a rounded off 1 ether(not exactly one ether,its minus gas)

 The details seen in the Block explorer....as below

METAMASK extension in Chrome:Installation

MetaMask is a bridge that allows one to visit the distributed web of Ethereum in the browser. It allows anyone to run Ethereum dApps right in  browser without running a full Ethereum node.MetaMask includes a secure identity vault, providing a user interface to manage your identities on different sites and sign blockchain transactions.Below screen shots are self explanatory for installation of MetaMask in chrome browser.

Goto the extension link at google chrome store at https://chrome.google.com/webstore/category/extensions

 Search for MetaMask

 Add the extension as seen in the screen shot below

 Welcome screen of MetaMask

 Create your Password

 Click accept

Download your phrase and store it as deemed appropriate secret location,duly encrypted ...since this single phrase will be the key to fiddle with your ethers ahead

 Installation part complete

How to install Graylog on Ubuntu 18.04.1 LTS ?

1.    Graylog2 is a powerful log management and analysis tool that has many use cases, from monitoring SSH logins and unusual activity to debugging applications. It is based on Elasticsearch, Java, MongoDB, and Scala.The installation is not exactly to say simple since a lot of integration goes behind involving different applications including Elasticsearch, Java, MongoDB, and Scala. But in few steps and little modifications in default configuration files,the same can be run with ease.

2.   Below are terminal commands with screen shots to achieve the same running

Firstly,the system that I m installing the GRAYLOG on ..the specs are as below

 Then coming to the root terminal...from where all the commands will be executed for installation.

$ apt update && apt upgrade

 Next we install the JDK module

$ apt install apt-transport-https uuid-runtime pwgen openjdk-8-jre-headless

 This is followed by installing ELASTICSEARCH

$ wget -qO - https://artifacts.elastic.co/GPG-KEY-elasticsearch | apt-key add -

 $ echo "deb https://artifacts.elastic.co/packages/5.x/apt stable main" | sudo tee -a /etc/apt/sources.list.d/elastic-5.x.list

Next we install
 $ apt update && apt install elasticsearch

This is followed by enabling the service and starting

$   systemctl enable elasticsearch $   systemctl start elasticsearch

Amend cluster.name as graylog

 Followed by these lines at the EOF

script.inline: false

script.indexed: false

script.file: false

 

This is followed by

$ systemctl restart elasticsearch

 

Now install the key

$ apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 2930ADAE8CAF5059EE73BB4B58712A2291FA4AD5 

 Then MANGODB repository

$ echo "deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/3.6 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-3.6.list

 Install mongodb

$ apt update && apt install mongodb-org

$   systemctl start mongod

$    systemctl enable mongod

$ wget https://packages.graylog2.org/repo/packages/graylog-2.5-repository_latest.deb
$ dpkg -i graylog-2.5-repository_latest.deb
$ apt-get update
$ apt-get install graylog-server

After installation of the Graylog package is finished, we need to edit the configuration file to set our password in it and we do it using pwgen command 

$ pwgen -N 1 -s 96

 $ echo -n your_password | sha256sum

 

We place the above generated output in the conf file as seen below : 

Assistance reference from https://www.osradar.com/how-to-install-graylog-on-ubuntu-18-04/ - Thanks

Mayan EDMS : Opensource Document Management System : Installation UBUNTU

1.   Mayan EDMS is a web-based free/libre document management system for managing documents within an organization and all functionality is available in its free public version.Mayan EDMS is an electronic vault for your documents. Mayan EDMS has advanced search and categorization capabilities that helps reduce the time to find the information anyone needs. It is free open source and integrates with existing equipment, that means low to no initial investment, and even lower total cost of ownership, reducing operational costs has never been this easy.

2.     This post gives a screenshot reference for installation on a Ubuntu machine.The installation is simple and self explanatory.The list of commands involved too is mentioned below: