gurvinderdadyala

How to resize a qcow2 disk image on Linux

This example takes olddisk.qcow2 and resizes it into newdisk.qcow2, extending one of the guest's partitions to fill the extra space.

1. qcow2 format

1.1. Verify the filesystems of olddisk.qcow2

gurvinderdadyala

##
## Dovecot SSL settings with Intermediate compatibility
## Follows Mozilla's Security/Server Side TLS guidelines
## https://wiki.mozilla.org/Security/Server_Side_TLS
##

##
## Optionial:
##   Disable 3DES ciphersuites to prevent CVE-2016-2183
##     by appending ":!3DES" to the ssl_cipher_list

gurvinderdadyala

<?php

// secure hashing of passwords using bcrypt, needs PHP 5.3+
// see http://codahale.com/how-to-safely-store-a-password/

// salt for bcrypt needs to be 22 base64 characters (but just [./0-9A-Za-z]), see http://php.net/crypt
$salt = substr(strtr(base64_encode(openssl_random_pseudo_bytes(22)), '+', '.'), 0, 22);

// 2y is the bcrypt algorithm selector, see http://php.net/crypt
// 12 is the workload factor (around 300ms on my Core i7 machine), see http://php.net/crypt

gurvinderdadyala

sudo apt-get install libgnutls30:i386 libldap-2.4-2:i386 libgpg-error0:i386 libxml2:i386 libasound2-plugins:i386 libsdl2-2.0-0:i386 libfreetype6:i386 libdbus-1-3:i386 libsqlite3-0:i386
sudo dpkg --add-architecture i386
wget -O - https://dl.winehq.org/wine-builds/winehq.key | sudo apt-key add -
sudo add-apt-repository 'deb https://dl.winehq.org/wine-builds/ubuntu/ bionic main'
sudo add-apt-repository ppa:cybermax-dexter/sdl2-backport
sudo apt update && sudo apt install --install-recommends winehq-stable

gurvinderdadyala

#!/bin/bash

# Set Variables
EXIMLOG=/var/log/exim4/mainlog
MYLOG=/tmp/exim_status.log
OFFSETFILE=/tmp/eximstatusoffset.dat
EXIMSTATS=/usr/sbin/eximstats
LOGTAIL=/usr/sbin/logtail
ZABBIX_SENDER=/usr/bin/zabbix_sender
ZABBIX_CONF=/etc/zabbix/zabbix_agentd.conf

gurvinderdadyala

// XPath CheatSheet
// To test XPath in your Chrome Debugger: $x('/html/body')
// http://www.jittuu.com/2012/2/14/Testing-XPath-In-Chrome/


// 0. XPath Examples.
// More: http://xpath.alephzarro.com/content/cheatsheet.html


'//hr[@class="edge" and position()=1]'                // every first hr of 'edge' class

gurvinderdadyala

#
# OpenLDAP schema file for Sudo
# Save as /etc/openldap/schema/sudo.schema
#

attributetype ( 1.3.6.1.4.1.15953.9.1.1
    NAME 'sudoUser'
    DESC 'User(s) who may  run sudo'
    EQUALITY caseExactIA5Match
    SUBSTR caseExactIA5SubstringsMatch

gurvinderdadyala

dn: cn=sudo,cn=schema,cn=config
objectClass: olcSchemaConfig
cn: sudo
olcAttributeTypes: {0}( 1.3.6.1.4.1.15953.9.1.1 NAME 'sudoUser' DESC 'User(s
 ) who may  run sudo' EQUALITY caseExactIA5Match SUBSTR caseExactIA5Substrin
 gsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 )
olcAttributeTypes: {1}( 1.3.6.1.4.1.15953.9.1.2 NAME 'sudoHost' DESC 'Host(s
 ) who may run sudo' EQUALITY caseExactIA5Match SUBSTR caseExactIA5Substring
 sMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 )
olcAttributeTypes: {2}( 1.3.6.1.4.1.15953.9.1.3 NAME 'sudoCommand' DESC 'Com

gurvinderdadyala

# basic pfctl control
# ==
# Related: http://www.OpenBSD.org
# Last update: Tue Dec 28, 2004
# ==
# Note:
# this document is only provided as a basic overview
# for some common pfctl commands and is by no means
# a replacement for the pfctl and pf manual pages.

gurvinderdadyala

#!/bin/bash

# Set defaults if not provided by environment
CHECK_DELAY=${CHECK_DELAY:-5}
CHECK_IP=${CHECK_IP:-8.8.8.8}
PRIMARY_IF=${PRIMARY_IF:-eth0}
PRIMARY_GW=${PRIMARY_GW:-1.2.3.4}
BACKUP_IF=${BACKUP_IF:-eth1}
BACKUP_GW=${BACKUP_GW:-2.3.4.5}