Héctor Luaces hluaces

LVM cache in Fedora

From the man-pages: "The cache logical volume type uses a small and fast LV to improve the performance of a large and slow LV. It does this by storing the frequently used blocks on the faster LV. LVM refers to the small fast LV as a cache pool LV. The large slow LV is called the origin LV. Due to requirements from dm-cache (the kernel driver), LVM further splits the cache pool LV into two devices - the cache data LV and cache metadata LV. The cache data LV is where copies of data blocks are kept from the origin LV to increase speed. The cache metadata LV holds the accounting information that specifies where data blocks are stored (e.g. on the origin LV or on the cache data LV). Users should be familiar with these LVs if they wish to create the best and most robust cached logical volumes. All of these associated LVs must be in the same VG."

Assuming LVM is already setup in HDD (e.g. from anaconda) and SSD is untouched.

Create a physical

En este gist guardo enlaces a los repositorios en los que comparto mis soluciones a todas las prácticas de la UNED que he ido realizando durante mi curso lectivo, en aras de que a alguien le sirvan de algo, pues cuando yo me metí en esto no tenía por donde tirar.

This list was originally present the wiki for this mailserver repository wiki page. I've created a gist with it as it is something that can be useful per se and I'd like to keep a copy of it.

A Feedback Loop (FBL) is a system by which an Internet Service Provider provides the sender a copy of the message that one of their subscribers has reported as spam — usually by hitting a “report spam” button in that ISP’s mail interface.

ISPs offer feedback loops to qualified senders, so the senders can identify subscribers who no longer want to receive similar mail and/or any problems originating from their networks, such as virus-infected spam-producing machines.

This page summarizes the information about FBL signup pages, whitelist pages, and postmaster pages of most popular ISPs around the world.

| ISP | FBL Signup | Whitelist Signup | Postmaster Page | ----- | -------------- | ----------------

	ansible-playbook 2.10.1
	config file = None
	configured module search path = ['/home/hector/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
	ansible python module location = /home/hector/.local/lib/python3.8/site-packages/ansible
	executable location = /home/hector/.local/bin/ansible-playbook
	python version = 3.8.2 (default, Jul 16 2020, 14:00:26) [GCC 9.3.0]
	No config file found; using defaults
	setting up inventory plugins
	host_list declined parsing /etc/ansible/hosts as it did not pass its verify_file() method
	Skipping due to inventory source not existing or not being readable by the current user

	<IfModule mod_expires.c>
	ExpiresActive On
	ExpiresByType text/css A31536000
	ExpiresByType text/x-component A31536000
	ExpiresByType application/x-javascript A31536000
	ExpiresByType application/javascript A31536000
	ExpiresByType text/javascript A31536000
	ExpiresByType text/x-js A31536000
	ExpiresByType text/html A3600
	ExpiresByType text/richtext A3600

	function filtro_mostrar_entradas_y_posts($query) {
	if ($query->is_search) {
	$query->set('post_type', ['post', 'page']);
	}
	return $query;
	}

	add_filter('pre_get_posts','filtro_mostrar_entradas_y_posts');

	---

	- name: 'Example playbook to populate a dinamically created list list'
	hosts: localhost
	vars:
	# The list of known VPNs
	vpn_list:
	- 'vpn-1'
	- 'vpn-2'
	- 'vpn-3'

	-- Héctor Luaces Novo
	-- SQL query to remove ACKs from Zabbix events.
	-- It is name-based but it can be easily tweaked to filter in some other ways.
	-- Please note that this might cause damage to your database. Be sure to have a backup.

	-- Usage:
	-- Copy this in an editor, change the NAME_PATTERN to switch your needs.
	-- If everything ran successfully, commit the transaction. Otherwise, do a rollback

	-- The pattern for your mail triggers

	#!/bin/bash
	#
	# @author Jose SAYAGO
	# @uri http://josesayago.com/blog/
	#
	# Process to monitor how many PHP-CGI processes are running, and kill them
	# if they exceed the limit
	#
	# Set the maximum number of CGI Processes allowed
	MAX_CGI=25;

	<?php

	/**
	* Snippet para avatares de WordPress aleatorios en base a un array de
	* imágenes.
	*
	* Se asume que éstas están en ./wp-content/uploads/avatares/.
	*
	* Este código puede añadirse a un "functions.php" o a cualquier plugin
	* personalizado.