Gurvinder Dadyala gurvinderdadyala

## resize_disk_image.md

      
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                gurvinderdadyala
                / resize_disk_image.md
            
            
              Created
              January 20, 2023 14:24
                — forked from joseluisq/resize_disk_image.md
            
              
                How to resize a qcow2 disk image on Linux
              
          
    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


## 15-ssl-intermediate.conf
##
## 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

## bcrypt.php
<?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

## zbx-exim-stats.sh
#!/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

## xpath-cheatsheet.js
// 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

## gist:687f67b42c70a67fc83df211cdbb3b07
# 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.

## failover.sh
#!/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}

## upgrade.yml
---
- hosts:
    - all
  become: true
  tasks:
    - name: Update apt cache
      apt: update_cache=yes

    - name: Upgrade packages
      apt: upgrade=dist

## python_over_ssh
#! /usr/bin/env python

import secure
import pexpect

# the file containing the list of servers to log into
input_file = "script_list"

# The login creds
user = secure.USER

## graylog2-wipe.sh
#!/bin/sh
service elasticsearch stop
service graylog2-server stop
killall -9 java
service apache2 stop
rm -Rf /opt/elasticsearch/data/*
# IF YOU HAVE AUTH USE THIS LINE - mongo graylog2 --eval "db.auth('graylog2', 'PASSWORD'); db.message_counts.remove();"
mongo graylog2 --eval "db.message_counts.remove();"
service elasticsearch start
service graylog2-server start
	##
	## 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
	<?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
	#!/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
	// 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
	# 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.
	#!/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}
	---
	- hosts:
	- all
	become: true
	tasks:
	- name: Update apt cache
	apt: update_cache=yes

	- name: Upgrade packages
	apt: upgrade=dist
	#! /usr/bin/env python

	import secure
	import pexpect

	# the file containing the list of servers to log into
	input_file = "script_list"

	# The login creds
	user = secure.USER
	#!/bin/sh
	service elasticsearch stop
	service graylog2-server stop
	killall -9 java
	service apache2 stop
	rm -Rf /opt/elasticsearch/data/*
	# IF YOU HAVE AUTH USE THIS LINE - mongo graylog2 --eval "db.auth('graylog2', 'PASSWORD'); db.message_counts.remove();"
	mongo graylog2 --eval "db.message_counts.remove();"
	service elasticsearch start
	service graylog2-server start