This is a quick tutorial showing how to upgrade Ubuntu 14.04 to Ubuntu 16.04 on a server. Ubuntu 16.04 LTS Xenial Xerus was released on April 21st, 2016. You can read the release notes on Ubuntu official site.
Note: Please do a thorough testing before you upgrade on a production server.
Upgrade Ubuntu 14.04 to Ubuntu 16.04
First SSH into your server and update all packages.
sudo apt-get update sudo apt-get upgrade sudo apt-get dist-upgrade
Make sure you have
update-manager-core installed on your server by running the following command.
dpkg -l | grep update-manager-core
If you see nothing, that means
update-manger-core is not installed. Install it with this command:
sudo apt-get install update-manager-core
Ubuntu 14.04 LTS to 16.04 LTS upgrades will be enabled only after the 16.04.1 LTS point release is released on July 21st 2016. So right now ( June 15 ) we have to use
-d option to force upgrade. However, this is not recommended for production server.
After Ubuntu 16.04.1 is released, you can just run
Once the upgrade is complete, restart your server. SSH login again, then use the
lsb_release -a command to check Ubuntu version.
[email protected]:~# lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 16.04 LTS Release: 16.04 Codename: xenial
Congrats! You have successfully upgraded Ubuntu 14.04 to 16.04. From here on out, you use Systemd and don’t have to worry about upstart.
[email protected]:~# systemctl status apache2 ● apache2.service - LSB: Apache2 web server Loaded: loaded (/etc/init.d/apache2; bad; vendor preset: enabled) Drop-In: /lib/systemd/system/apache2.service.d └─apache2-systemd.conf Active: active (running) since Wed 2016-06-15 11:30:38 EDT; 9min ago Docs: man:systemd-sysv-generator(8) Process: 337 ExecStart=/etc/init.d/apache2 start (code=exited, status=0/SUCCESS) CGroup: /system.slice/apache2.service ├─441 /usr/sbin/apache2 -k start └─444 /usr/sbin/apache2 -k start
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