martedì, novembre 20, 2018

Install GNOME GUI on RHEL 6 and 7 Linux Server

If you have performend a RHEL 7 Linux Server installation and did not include Graphical User Interface (GUI) you can do it later directly from command line using yum command and...

How to fix “Permission denied: proxy: HTTP: attempt to connect to 127.0.0.1:8080 (localhost) failed”

Error: Permission denied: proxy: HTTP: attempt to connect to 127.0.0.1:8080 (localhost) failed – this error is because of httpd/apache2 has been denied permission to connect to IP address and port. The reason for this...

How to fix error BDB0091 DB_VERSION_MISMATCH – RPM on Debian

Error: error: db5 error(-30969) from dbenv->open: BDB0091 DB_VERSION_MISMATCH: Database environment version mismatch error: cannot open Packages index using db5 -  (-30969) Solution: rpm --rebuilddb rpm --initdb  

Let’s Encrypt – Request certificate on Ubuntu 14.04

Step 1 — Install the Server Dependencies The first thing we need to do is to update the package manager cache with: sudo apt-get update We will need git in order to download the...

Let’s Encrypt – Apache Configuration Example

This is how my /etc/httpd/conf.d/ssl.conf looks like: LoadModule ssl_module modules/mod_ssl.so <IfModule mod_ssl.c> # # Pseudo Random Number Generator (PRNG): # Configure one or more sources to seed the PRNG of the SSL library. # The seed data...

Samba4 – Remote Server Administration Tools

Introduction The easiest way to administer an Active Directory is by using Microsofts RSAT (Remote Server Administration Tools) on a Windows machine. "samba-tool" already contains many features for common administration jobs, but compared...

Samba4 – Basic User Administration

This is the basic user management for Samba4 Active Directory Domain Controller. Display domain users list. [email protected]:~# samba-tool user list Administrator jessie krbtgt Guest Add a domain user. [email protected]:~# samba-tool user add debian New Password:# set...

How To Tune Apache – mpm prefork

Recognize that Ubuntu 14.04 uses Apache 2 with PHP running through an mpm_prefork module (Debian 8 use mpm_event), of which an editable file is in /etc/apache2/mods-enabled/mpm_prefork.conf. Also, recognize that starting...

Multi-Processing Modules (MPMs) – Apache HTTP Server Version 2.4

The Apache HTTP Server is designed to be a powerful and flexible web server that can work on a very wide variety of platforms in a range of different environments. Different...

How to Tuning Your Apache Server

Tools There are a variety of tools that can assist in determining if you need to alter resource settings, including the top command and the load-testing program Siege. Linode’s own Longview service...