tuxfight3r

#Read multiple keys from an authorized_keys file and print the finger print

[root@server01 .ssh]# while read line; do ssh-keygen -l -f /dev/stdin <<< $line; done < authorized_keys 
2048 87:7a:4d:70:d2:10:a4:4b:b7:e1:2b:7c:77:92:25:04 /dev/stdin (RSA)
2048 7d:f0:89:94:00:09:bc:70:46:59:8d:9a:70:3b:ac:70 /dev/stdin (RSA)
2048 61:63:ee:0d:f6:d2:d8:d6:ae:37:0c:35:ae:da:51:6a /dev/stdin (RSA)

#read a key from authorized key file
[root@server01 .ssh]# ssh-keygen -l -f authorized_keys 
2048 87:7a:4d:70:d2:10:a4:4b:b7:e1:2b:7c:77:92:25:04 authorized_keys (RSA)

tuxfight3r

#to be able to view the java jmx internals of an application running in kubernetes as a pod

# set the below environment value in the pod definition
_JAVA_OPTIONS="-Dcom.sun.management.jmxremote
  -Dcom.sun.management.jmxremote.authenticate=false
  -Dcom.sun.management.jmxremote.ssl=false
  -Dcom.sun.management.jmxremote.local.only=false
  -Dcom.sun.management.jmxremote.port=5000
  -Dcom.sun.management.jmxremote.rmi.port=5000
  -Djava.rmi.server.hostname=127.0.0.1"

tuxfight3r

Common Options

-#, --progress-bar Make curl display a simple progress bar instead of the more informational standard meter.

-b, --cookie <name=data> Supply cookie with request. If no =, then specifies the cookie file to use (see -c).

-c, --cookie-jar <file name> File to save response cookies to.

tuxfight3r

# Problem Statement
# Create a class Calculator, which performs addition and subtraction of two numbers at a time.
class Calculator
  def add(a, b)
   a+b
  end

  def subtract(a, b)
   a-b
  end

tuxfight3r

#!/bin/bash
Purpose: Sync centos7 repos via rsync behind proxy
Author: Mohan


#Makesure rsync port 873 is allowed outbound on the squid proxy
export RSYNC_PROXY=192.168.2.250:3128

#create directory structure
mkdir -p /opt/repo/yum/centos/{os,updates}

tuxfight3r

#!/usr/bin/env python

'''
Example custom dynamic inventory script for Ansible, in Python.
'''

import os
import sys
import argparse

tuxfight3r

#!/usr/bin/python

import socket	#for sockets
import sys	#for exit

try:
	#create an AF_INET, STREAM socket (TCP)
	s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
except socket.error, msg:
	print 'Failed to create socket. Error code: ' + str(msg[0]) + ' , Error message : ' + msg[1]

tuxfight3r

openshift list all pods and thier specs (requests/limits)

oc get pod -o jsonpath='{range .items[*]}{"SPEC:  \n  LIMITS  : "}{.spec.containers[*].resources.limits}{"\n  REQUESTS: "}{.spec.containers[*].resources.requests}{"\n"}{end}'

openshift list all pods and thier specs with name (requests /limits)

oc get pod -o jsonpath='{range .items[*]}{"NAME:  "}{.metadata.name}{"\nSPEC:  \n  LIMITS  : "}{.spec.containers[*].resources.limits}{"\n  REQUESTS: "}{.spec.containers[*].resources.requests}{"\n\n"}{end}'

tuxfight3r

#!/bin/bash

PUBLIC_IP4_IFACE=eth2
LISTEN_IFACE=${PUBLIC_IP4_IFACE}

listen_address=$(ip -f inet addr show dev ${LISTEN_IFACE} | grep -Po 'inet \K[\d.]+')
listen_port=${1}
target_host=${2}
target_port=${3}

tuxfight3r

#!/bin/bash

if [ "$1" == "--list" ] ; then
cat<<EOF
{
  "bash_hosts": {
	"hosts": [
	  "10.220.21.24",
	  "10.220.21.27"
	],