Cloud Devops Automation

There are many situations when you want to track the events occurring over the network which could come handy during the high traffic. Also it can help you track if the traffic that you receiving is genuine and analyzing the pattern you can take better informed decisions. tcpdump analyzes the tcp traffic like your webserver traffic which works on the tcp protocol very effectively. You would need the root privilege to see most part of the network due to the security involved. Following are the handy commands to be used in the tcpdump 1. To see the interfaces on which the tcpdump can listen tcpdump -D

!! Steps to create Logical Volume Manager Partition. 1. Check Partition on system using below command #fdisk -l 2. Create Partition #fdisk /dev/sda a. n Option for create new Partition b. p Option for preview new Partition c. w Save Partition d. q Quit 3. Use the below command to update the kernel #partprobe

MySQL Administration tasks To start/stop/restart mysql As root/sudo, invoke /etc/init.d/mysqld (start/stop/restart) (i.e. /etc/init.d/mysqld start) To make mysql accessible to outside world Make sure you have a static ip address (like on ec2 instances, use elastic-ip) Edit (as root/sudo) /etc/mysq.cnf and make sure bind-address is 0.0.0.0 (i.e. bind-address=0.0.0.0) Then restart mysql To give a specific user outside world privilege access For user xyz to xmlloader database do the following GRANT ALL ON xmlloader.* to 'xyz'@'0.0.0.0' IDENTIFIED BY '[xyzpassword]' The [xyzpassword] is something you need to set/specified (i.e. it's new) To export full database as sql inserts As root/sudo, invoke mysqldump -u [user] -p[userpassword] [database] > [output file name] i.e. sudo mysqldump -u dbuser -pdbuser feedloader > fl_loader.sql To import full database (i.e. new database) from export script As root/sudo, invoke mysql -u [use...

Here you will find a list of standards to reference. Redirect-Only VHost VHost example 1 . Use Apache's RewriteRule instead of Redirect 2 . example: 3 . 4 . ServerAdmin [email protected] 5 . ServerName site-to-be-redirected.com 6 . ServerAlias www.site-to-be-redirected.com 7 . ExpiresActive On 8 . ExpiresDefault "access plus 1 minute" 9 . RewriteEngine On 10 . RewriteRule ^/(.*) http://www.othersite.com/path/$1 11 . RewriteCond %{REQUEST_METHOD} ^TRACE 12 . RewriteRule .* - [F] 13 .

While working on the Console, if you are going to deregister the AMI in the Amazon console , it doesn't remove the snapshots associated with that AMI. It will only deregister the AMI after which you won't be able to figure out which all snapshots were left behind.