System Administrator Documents

--> install mongodb community edition 1. Import the public key used by the package management system.  sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 0C49F3730359A14518585931BC711F9BA15703C6 2. Create a list file for MongoDB. -> Ubuntu 12.04: echo "deb [ arch=amd64 ] http://repo.mongodb.org/apt/ubuntu precise/mongodb-org/3.4 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-3.4.list -> Ubuntu 14.04: echo "deb [ arch=amd64 ] http://repo.mongodb.org/apt/ubuntu trusty/mongodb-org/3.4 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-3.4.list ->Ubuntu 16.04 echo "deb [ arch=amd64,arm64 ] http://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/3.4 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-3.4.list 3 Reload local package database.     sudo apt-get update 4 Install the MongoDB packages.     sudo apt-get install -y mongodb -org 5 Start MongoDB.      sudo service mongod start 6 Verify that ...

How To Set Up a Node.js Application for Production on Ubuntu 16.04 Introduction Node.js is an open source JavaScript runtime environment for easily building server-side and networking applications. The platform runs on Linux, OS X, FreeBSD, and Windows. Node.js applications can be run at the command line, but we'll focus on running them as a service, so that they will automatically restart on reboot or failure, and can safely be used in a production environment. Install Node.js First, you need to install the NodeSource PPA in order to get access to its contents. Make sure you're in your home directory, and use curl to retrieve the installation script for the Node.js 6.x archives: cd ~ curl -sL https://deb.nodesource.com/setup_6.x -o nodesource_setup.sh curl -sL https://deb.nodesource.com/setup_8.x -o nodesource_setup.sh You can inspect the contents of this script with vi (or your preferred text editor): vi nodesource_setup.sh And run the script under s...

Introduction Needs of cloud computing Architectures INTRODUCTION Cloud computing provides us a means by which we can access the applications as utilities over the Internet. It allows us to create, configure and customize application online. With Cloud, Computing users can access database resources via the internet from anywhere for as long as they need without worrying about any maintenance or management of actual resources. What is Cloud Computing? Cloud Computing is a general term used to describe a new class of network-based computing that takes place over the Internet, Cloud can provide service over network, on public networks or on private networks, WAN, LAN or VPN. These platforms hide the complexity and details of the underlying infrastructure from users and applications by providing a very simple graphical interface or API (Applications Programming Interface). In addition, the platform provides on-demand services, which are a...

Run PowerShell Scripts from Task Scheduler 1. Open Task Scheduler Open Task Scheduler and Create a new task. Name it and set your security options. 2. Set Triggers Click on the Triggers tab and set your schedule or event that will trigger the running of your Powershell script. 3. Create your Action Click on the Actions tab and click on New. Action: Start a program Program/script: Powershell.exe You don't need to put a path as it should already be on your system. 4. Set Argument First, you need to set the ExecutionPolicy. You have two options here, you can set the ExecutionPolicy on the machine or you can do it on a per-script basis. Read the PowerShell ExecutionPolicy link below as it talks about or you can issue the command: Get-Help About_execution_policies To set the execution policy globally, you can issue this command from within PowerShell: Set-ExecutionPolicy Unrestricted Or use one of the other settings avai...