Epidemiology & Technology

Blog Archive

MongoDB on Ubuntu18.04 from the MongoDb website

Commands to set up MongoDb 4.2 LINK The mongodb package provided by Ubuntu is not maintained by MongoDB Inc. and conflicts with the official mongodb-org package. If you have already installed the mongodb package on your Ubuntu system, you must first uninstall the mongodb package before proceeding with these instructions.

Nginx, PHP, WordPress

Install Nginx and PHP-FPM PHP 7.2 FPM Install Wordpress Configure NGINX Complete Wordpress Installation

WordPress .htaccess

Enable Modules HTTP to HTTPS redirection of within site links Expires ensure that the deflate, headers and expires modules are enabled Apache Settings for speed Other .htaccess settings

Getting WordPress to work on 18.04 behind reverse proxy on SSL

On Nginx Reverse Poxy Create a configuration file in sites-available directory and symlink it to sites-enabled Files Limit on Reverse Proxy https://www.claudiokuenzler.com/blog/850/nginx-socket-failed-24-too-many-open-files. The default is set to a limit of 4096 files per (worker) process, which can be seen in /etc/default/nginx: EDITING THIS FILES DOES NOT HELP. Instead edit /etc/security/limits.conf:

Ubuntu Server 18.04 Initial Setup

Network Configure Network through Netplan Hostname Change the Hostname through hostnamectl Ensure that the changed hostname is preserved during system reboots Time zone and Date Time Synchronization sudo hostnamectl set-hostname SERVERNAME SSH Cockpit Firewall Rules Install Some Utilities

Stata 15 installation on Ubuntu 18.04

Install dependencies Untar the files in /usr/local/stata15. Install Stata and add your license information. Add the directory to path Log out and re-login to initialize the path Start Stata

Ubuntu KVM VMM

Check Prerequisites Install libvirt, Qemu, and Virtual Media Manager Add current user to the kvm group and the libvirt / libvirtd group based on your ubuntu version Verify ownership of socks files Check networking

Ubuntu Initial Setup

Update applications and add some essential tools This also add MS fonts such as Arial, Time New Roman etc.. Dropbox Thereafter complete the dropbox installation LibreOffice Latest Create 4096 bit SSH Key Edit the SSHD_config file KeypassXC Start KeypassXC. In settings, enable browser integration, disable close on exit. Install the

Ubuntu Users and Groups

Add a new user Manage Groups

Ubuntu Hostname Change

Ubuntu 18.04 Server When using libvirt / Virtual media manager for cloning a KVM based Ubuntu Server virtual machine, we should change the hostname of the cloned VM after first reboot. Here is the code to accomplish this Reboot Check Hostname Ubuntu 18.04 Desktop On Ubuntu 18.04 desktop, cloud-init is