krishnamurthydasari

# ---------------------------------------------------------------------------
# | File : BackuptoS3.ps1
# | Version : 1.0
# | Purpose : Backs up folders on Windows to s3 bucket using power shell
# | Usage : .\BackuptoS3_Snapshots.ps1
# ----------------------------------------------------------------------------

#s3 bucket name
$bucket = "s3BucketName"

krishnamurthydasari

Creating new repository:
========================

Create a new repository on GitHub by selecting initialize this repository with README.
Clone repository using below commands,

git clone https://github.com/krishnamurthydasari/TestProject.git
touch NewFile.txt
git add NewFile.txt
git status

krishnamurthydasari

Below are the steps to Create Deployment Package Using a Python Environment Created with Virtualenv. Below are the 2 examples for pymysql and boto2 modules. 

pymysql:

    1.	Create a directory
    2.	Create virtual environment

    #virtualenv test

    3.	#cd test

krishnamurthydasari

#!/bin/bash
#Date		: 13-07-2017
#Owner		: Krishnamurthy Dasari
#Description: Pull the changes from upstreem to local git repository, upload all changes to s3 bucket and send email alert with changed files.

GitLocalRepoDir="/path/to/local/directory"

s3bucket="s3://BucketName"
email_subject="Subject"
email_From="[email protected]"

krishnamurthydasari

1.  Install GNOME and VNC server packages 

    yum --exclude=nautilus-sendto groupinstall "GNOME Desktop Environment"
    yum install vnc-server

2.  Create your VNC users. You can use existing users if already have.

    #useradd Krishna
    #passwd Krishna

krishnamurthydasari

Expending root disk size when root device has partition inside it, directly running resize2fs command will not work, 
Follow below steps to resolve issue.

Check "lsblk" command output for root device name and filesystem type, these steps works for ext3 and ext4
If root device name is /dev/xvda1, then

growpart /dev/xvda 1   ### Note the space between /dev/xvda and 1
resize2fs /dev/xvda1
partprobe

krishnamurthydasari

1.	Update security group to allow 5666, ICMP request and SSH protocols from nagios server 34.193.101.102/32

2.	Run below commands to install Nagios client

mkdir /opt/Nagios
cd /opt/nagios/
wget https://assets.nagios.com/downloads/nagiosxi/agents/linux-nrpe-agent.tar.gz
tar xvf linux-nrpe-agent.tar.gz
cd linux-nrpe-agent 
./fullinstall

krishnamurthydasari

x11 server setup:

server side:

yum install xorg-x11-xauth xterm -y

Client side:

install mobaxterm (OR any x server gui tool) and connect from that tool

krishnamurthydasari

For this setup:

	DNS Master Server	172.31.88.75
	DNS Slave Server	172.31.93.71
	Host1			172.31.83.52
	Host2			172.31.88.91
	
	** Configured only fws zone. Reverse zone setup not tested.
	** Reference : https://www.tecmint.com/setup-master-slave-dns-server-in-centos/
	

krishnamurthydasari

If server is used only for forward requests:

options {
        .
        .
        
        allow-query     { localhost; any; };
        recursion yes;
        forward only;
        .