February 26

How to Upgrade Ubuntu 14 to 16

check current version:

lsb_release -a

Install Available Updates

apt-get update
apt-get upgrade
apt-get dist-upgrade

Stop Services

service apache2 stop


1. Install the update-manager-core package:

apt-get install update-manager-core

2. Open /etc/update-manager/release-upgrades and verify that the Prompt value is set to lts:


3. You’re now ready to begin the upgrade to Ubuntu 16.04 LTS:


Follow the on-screen instructions to complete the installation process.

Install and Update php7.0 properly after upgrade. 
note: you might want to remove php 5 first. 
$ sudo apt-get purge php5-common (or, $ sudo apt-get purge 'php5*') 
$ sudo apt-get install php7.0 php7.0-fpm php7.0-mysql libapache2-mod-php
Side note: enable php short end on php7.0: 
$ vim /etc/php/7.0/apache2/php.ini
sudo a2enmod php7.0
sudo service apache2 restart

NOTE: upgrade to ubuntu 18.04 which comes with mysql 5.7. To solve no default value issue, use following settign in my.ini

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