====== Purpose of this exercise ======

Goal 1 - Get the Operating system of all the environments to Newest -1\\
Goal 2 - Validate the existing documentation and confirm that the we will be able to bring up the server to the correct state\\
Goal 3 - Add a dashboard to facilitate dev and ops interactions using ELK\\
Goal 4 - find out any latent issues for migrating out from NA1 to OVH or any other provider\\
Goal 5 - induct other DevOps team members to cover Learnexa support more effectively.\\

===== Additional Costs involved =====
 For the duration of about 3 weeks 26th Nov - 10th Dec, 2016 there will be 3 additional boxes getting prepped before being taken offline.\\

Current usage
CPU Hours 31248 0.034000 10% 956.19 956.19\\
RAM Hours 68448 0.021250 10% 1309.07 1309.07\\
Storage Hours 3199200 0.000300 10% 863.78 863.78\\

**additional cost based on the above costs is USD 1100/-**\\
We will maintain a tight deadline and ensure that the boxes are decommissioned at the earliest possible moment.



==== Week 1  ====
 
21st Nov, 2016 - 25th Nov,2016 - Change on 26th Nov, 2016\\
MySQL Slave OS upgrade from 5.7 to Centos 6.7- MySQL version will remain the same\\
App server OS upgrade from 5.7 to Centos 6.7 - All the web /app components will remain the same\\


Steps to do for the App Server\\
https://wiki.exphosted.com/doku.php/setup_app_server_centos-6.5?s[]=production&s[]=environment

Steps to do for the MySQL Server\\
https://wiki.exphosted.com/doku.php/na3setup?s[]=mysql&s[]=database&s[]=role

=== Changes on 26th Nov - ===

(1) add a new app server to haproxy - LB reload < 2 min\\
(2) add a new slave server to MySQL - dump with read lock < 5 min\\

Total downtime of about 30 minutes needed

==== Week 2  ====
 
27th Nov, 2016 - 03rd Dec, 2016\\
MySQL Master OS upgrade from 5.7 to CentOS 6.7\\ 
AppServer OS upgrade from 5.7 to CentOS 6.7\\

Steps to do for the App Server\\
https://wiki.exphosted.com/doku.php/setup_app_server_centos-6.5?s[]=production&s[]=environment

Steps to do for the MySQL Master Server\\
https://wiki.exphosted.com/doku.php/na3setup?s[]=mysql&s[]=database&s[]=role

=== Changes on 03rd Dec, 2016 - ===

(1) add a new app server to haproxy - LB reload < 2 min\\
(2) add a new master server to MySQL - move the database of 1 GB from current master to the new master\\
(3) validate capistrano scripts on the new prdapp01\\

Downtime on 03rd Dec, 2016 - 4 hours downtime\\

==== Week 3 ====
 
10th Dec, 2016\\
Haproxy to CentOS 6.7\\
CollabServer from Ubuntu 10 to 14.04\\

=== Changes on 10th Dec, 2016 ===

Change the Natting on NA1 Firewall from existing haproxy to new haproxy < 30 min\\
Estimating the downtime for Collabserver\\